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test_patma.py
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import array import collections import dataclasses import enum import inspect import sys import unittest @dataclasses.dataclass class Point: x: int y: int class TestCompiler(unittest.TestCase): def test_refleaks(self): # Hunting for leaks using -R doesn't catch leaks in the compiler itself, # just the code under test. This test ensures that if there are leaks in # the pattern compiler, those runs will fail: with open(__file__) as file: compile(file.read(), __file__, "exec") class TestInheritance(unittest.TestCase): @staticmethod def check_sequence_then_mapping(x): match x: case [*_]: return "seq" case {}: return "map" @staticmethod def check_mapping_then_sequence(x): match x: case {}: return "map" case [*_]: return "seq" def test_multiple_inheritance_mapping(self): class C: pass class M1(collections.UserDict, collections.abc.Sequence): pass class M2(C, collections.UserDict, collections.abc.Sequence): pass class M3(collections.UserDict, C, list): pass class M4(dict, collections.abc.Sequence, C): pass self.assertEqual(self.check_sequence_then_mapping(M1()), "map") self.assertEqual(self.check_sequence_then_mapping(M2()), "map") self.assertEqual(self.check_sequence_then_mapping(M3()), "map") self.assertEqual(self.check_sequence_then_mapping(M4()), "map") self.assertEqual(self.check_mapping_then_sequence(M1()), "map") self.assertEqual(self.check_mapping_then_sequence(M2()), "map") self.assertEqual(self.check_mapping_then_sequence(M3()), "map") self.assertEqual(self.check_mapping_then_sequence(M4()), "map") def test_multiple_inheritance_sequence(self): class C: pass class S1(collections.UserList, collections.abc.Mapping): pass class S2(C, collections.UserList, collections.abc.Mapping): pass class S3(list, C, collections.abc.Mapping): pass class S4(collections.UserList, dict, C): pass self.assertEqual(self.check_sequence_then_mapping(S1()), "seq") self.assertEqual(self.check_sequence_then_mapping(S2()), "seq") self.assertEqual(self.check_sequence_then_mapping(S3()), "seq") self.assertEqual(self.check_sequence_then_mapping(S4()), "seq") self.assertEqual(self.check_mapping_then_sequence(S1()), "seq") self.assertEqual(self.check_mapping_then_sequence(S2()), "seq") self.assertEqual(self.check_mapping_then_sequence(S3()), "seq") self.assertEqual(self.check_mapping_then_sequence(S4()), "seq") def test_late_registration_mapping(self): class Parent: pass class ChildPre(Parent): pass class GrandchildPre(ChildPre): pass collections.abc.Mapping.register(Parent) class ChildPost(Parent): pass class GrandchildPost(ChildPost): pass self.assertEqual(self.check_sequence_then_mapping(Parent()), "map") self.assertEqual(self.check_sequence_then_mapping(ChildPre()), "map") self.assertEqual(self.check_sequence_then_mapping(GrandchildPre()), "map") self.assertEqual(self.check_sequence_then_mapping(ChildPost()), "map") self.assertEqual(self.check_sequence_then_mapping(GrandchildPost()), "map") self.assertEqual(self.check_mapping_then_sequence(Parent()), "map") self.assertEqual(self.check_mapping_then_sequence(ChildPre()), "map") self.assertEqual(self.check_mapping_then_sequence(GrandchildPre()), "map") self.assertEqual(self.check_mapping_then_sequence(ChildPost()), "map") self.assertEqual(self.check_mapping_then_sequence(GrandchildPost()), "map") def test_late_registration_sequence(self): class Parent: pass class ChildPre(Parent): pass class GrandchildPre(ChildPre): pass collections.abc.Sequence.register(Parent) class ChildPost(Parent): pass class GrandchildPost(ChildPost): pass self.assertEqual(self.check_sequence_then_mapping(Parent()), "seq") self.assertEqual(self.check_sequence_then_mapping(ChildPre()), "seq") self.assertEqual(self.check_sequence_then_mapping(GrandchildPre()), "seq") self.assertEqual(self.check_sequence_then_mapping(ChildPost()), "seq") self.assertEqual(self.check_sequence_then_mapping(GrandchildPost()), "seq") self.assertEqual(self.check_mapping_then_sequence(Parent()), "seq") self.assertEqual(self.check_mapping_then_sequence(ChildPre()), "seq") self.assertEqual(self.check_mapping_then_sequence(GrandchildPre()), "seq") self.assertEqual(self.check_mapping_then_sequence(ChildPost()), "seq") self.assertEqual(self.check_mapping_then_sequence(GrandchildPost()), "seq") class TestPatma(unittest.TestCase): def test_patma_000(self): match 0: case 0: x = True self.assertIs(x, True) def test_patma_001(self): match 0: case 0 if False: x = False case 0 if True: x = True self.assertIs(x, True) def test_patma_002(self): match 0: case 0: x = True case 0: x = False self.assertIs(x, True) def test_patma_003(self): x = False match 0: case 0 | 1 | 2 | 3: x = True self.assertIs(x, True) def test_patma_004(self): x = False match 1: case 0 | 1 | 2 | 3: x = True self.assertIs(x, True) def test_patma_005(self): x = False match 2: case 0 | 1 | 2 | 3: x = True self.assertIs(x, True) def test_patma_006(self): x = False match 3: case 0 | 1 | 2 | 3: x = True self.assertIs(x, True) def test_patma_007(self): x = False match 4: case 0 | 1 | 2 | 3: x = True self.assertIs(x, False) def test_patma_008(self): x = 0 class A: y = 1 match x: case A.y as z: pass self.assertEqual(x, 0) self.assertEqual(A.y, 1) def test_patma_009(self): class A: B = 0 match 0: case x if x: z = 0 case _ as y if y == x and y: z = 1 case A.B: z = 2 self.assertEqual(A.B, 0) self.assertEqual(x, 0) self.assertEqual(y, 0) self.assertEqual(z, 2) def test_patma_010(self): match (): case []: x = 0 self.assertEqual(x, 0) def test_patma_011(self): match (0, 1, 2): case [*x]: y = 0 self.assertEqual(x, [0, 1, 2]) self.assertEqual(y, 0) def test_patma_012(self): match (0, 1, 2): case [0, *x]: y = 0 self.assertEqual(x, [1, 2]) self.assertEqual(y, 0) def test_patma_013(self): match (0, 1, 2): case [0, 1, *x,]: y = 0 self.assertEqual(x, [2]) self.assertEqual(y, 0) def test_patma_014(self): match (0, 1, 2): case [0, 1, 2, *x]: y = 0 self.assertEqual(x, []) self.assertEqual(y, 0) def test_patma_015(self): match (0, 1, 2): case [*x, 2,]: y = 0 self.assertEqual(x, [0, 1]) self.assertEqual(y, 0) def test_patma_016(self): match (0, 1, 2): case [*x, 1, 2]: y = 0 self.assertEqual(x, [0]) self.assertEqual(y, 0) def test_patma_017(self): match (0, 1, 2): case [*x, 0, 1, 2,]: y = 0 self.assertEqual(x, []) self.assertEqual(y, 0) def test_patma_018(self): match (0, 1, 2): case [0, *x, 2]: y = 0 self.assertEqual(x, [1]) self.assertEqual(y, 0) def test_patma_019(self): match (0, 1, 2): case [0, 1, *x, 2,]: y = 0 self.assertEqual(x, []) self.assertEqual(y, 0) def test_patma_020(self): match (0, 1, 2): case [0, *x, 1, 2]: y = 0 self.assertEqual(x, []) self.assertEqual(y, 0) def test_patma_021(self): match (0, 1, 2): case [*x,]: y = 0 self.assertEqual(x, [0, 1, 2]) self.assertEqual(y, 0) def test_patma_022(self): x = {} match x: case {}: y = 0 self.assertEqual(x, {}) self.assertEqual(y, 0) def test_patma_023(self): x = {0: 0} match x: case {}: y = 0 self.assertEqual(x, {0: 0}) self.assertEqual(y, 0) def test_patma_024(self): x = {} y = None match x: case {0: 0}: y = 0 self.assertEqual(x, {}) self.assertIs(y, None) def test_patma_025(self): x = {0: 0} match x: case {0: (0 | 1 | 2 as z)}: y = 0 self.assertEqual(x, {0: 0}) self.assertEqual(y, 0) self.assertEqual(z, 0) def test_patma_026(self): x = {0: 1} match x: case {0: (0 | 1 | 2 as z)}: y = 0 self.assertEqual(x, {0: 1}) self.assertEqual(y, 0) self.assertEqual(z, 1) def test_patma_027(self): x = {0: 2} match x: case {0: (0 | 1 | 2 as z)}: y = 0 self.assertEqual(x, {0: 2}) self.assertEqual(y, 0) self.assertEqual(z, 2) def test_patma_028(self): x = {0: 3} y = None match x: case {0: (0 | 1 | 2 as z)}: y = 0 self.assertEqual(x, {0: 3}) self.assertIs(y, None) def test_patma_029(self): x = {} y = None match x: case {0: [1, 2, {}]}: y = 0 case {0: [1, 2, {}], 1: [[]]}: y = 1 case []: y = 2 self.assertEqual(x, {}) self.assertIs(y, None) def test_patma_030(self): x = {False: (True, 2.0, {})} match x: case {0: [1, 2, {}]}: y = 0 case {0: [1, 2, {}], 1: [[]]}: y = 1 case []: y = 2 self.assertEqual(x, {False: (True, 2.0, {})}) self.assertEqual(y, 0) def test_patma_031(self): x = {False: (True, 2.0, {}), 1: [[]], 2: 0} match x: case {0: [1, 2, {}]}: y = 0 case {0: [1, 2, {}], 1: [[]]}: y = 1 case []: y = 2 self.assertEqual(x, {False: (True, 2.0, {}), 1: [[]], 2: 0}) self.assertEqual(y, 0) def test_patma_032(self): x = {False: (True, 2.0, {}), 1: [[]], 2: 0} match x: case {0: [1, 2]}: y = 0 case {0: [1, 2, {}], 1: [[]]}: y = 1 case []: y = 2 self.assertEqual(x, {False: (True, 2.0, {}), 1: [[]], 2: 0}) self.assertEqual(y, 1) def test_patma_033(self): x = [] match x: case {0: [1, 2, {}]}: y = 0 case {0: [1, 2, {}], 1: [[]]}: y = 1 case []: y = 2 self.assertEqual(x, []) self.assertEqual(y, 2) def test_patma_034(self): x = {0: 0} match x: case {0: [1, 2, {}]}: y = 0 case {0: ([1, 2, {}] | False)} | {1: [[]]} | {0: [1, 2, {}]} | [] | "X" | {}: y = 1 case []: y = 2 self.assertEqual(x, {0: 0}) self.assertEqual(y, 1) def test_patma_035(self): x = {0: 0} match x: case {0: [1, 2, {}]}: y = 0 case {0: [1, 2, {}] | True} | {1: [[]]} | {0: [1, 2, {}]} | [] | "X" | {}: y = 1 case []: y = 2 self.assertEqual(x, {0: 0}) self.assertEqual(y, 1) def test_patma_036(self): x = 0 match x: case 0 | 1 | 2: y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_037(self): x = 1 match x: case 0 | 1 | 2: y = 0 self.assertEqual(x, 1) self.assertEqual(y, 0) def test_patma_038(self): x = 2 match x: case 0 | 1 | 2: y = 0 self.assertEqual(x, 2) self.assertEqual(y, 0) def test_patma_039(self): x = 3 y = None match x: case 0 | 1 | 2: y = 0 self.assertEqual(x, 3) self.assertIs(y, None) def test_patma_040(self): x = 0 match x: case (0 as z) | (1 as z) | (2 as z) if z == x % 2: y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) self.assertEqual(z, 0) def test_patma_041(self): x = 1 match x: case (0 as z) | (1 as z) | (2 as z) if z == x % 2: y = 0 self.assertEqual(x, 1) self.assertEqual(y, 0) self.assertEqual(z, 1) def test_patma_042(self): x = 2 y = None match x: case (0 as z) | (1 as z) | (2 as z) if z == x % 2: y = 0 self.assertEqual(x, 2) self.assertIs(y, None) self.assertEqual(z, 2) def test_patma_043(self): x = 3 y = None match x: case (0 as z) | (1 as z) | (2 as z) if z == x % 2: y = 0 self.assertEqual(x, 3) self.assertIs(y, None) def test_patma_044(self): x = () match x: case []: y = 0 self.assertEqual(x, ()) self.assertEqual(y, 0) def test_patma_045(self): x = () match x: case (): y = 0 self.assertEqual(x, ()) self.assertEqual(y, 0) def test_patma_046(self): x = (0,) match x: case [0]: y = 0 self.assertEqual(x, (0,)) self.assertEqual(y, 0) def test_patma_047(self): x = ((),) match x: case [[]]: y = 0 self.assertEqual(x, ((),)) self.assertEqual(y, 0) def test_patma_048(self): x = [0, 1] match x: case [0, 1] | [1, 0]: y = 0 self.assertEqual(x, [0, 1]) self.assertEqual(y, 0) def test_patma_049(self): x = [1, 0] match x: case [0, 1] | [1, 0]: y = 0 self.assertEqual(x, [1, 0]) self.assertEqual(y, 0) def test_patma_050(self): x = [0, 0] y = None match x: case [0, 1] | [1, 0]: y = 0 self.assertEqual(x, [0, 0]) self.assertIs(y, None) def test_patma_051(self): w = None x = [1, 0] match x: case [(0 as w)]: y = 0 case [z] | [1, (0 | 1 as z)] | [z]: y = 1 self.assertIs(w, None) self.assertEqual(x, [1, 0]) self.assertEqual(y, 1) self.assertEqual(z, 0) def test_patma_052(self): x = [1, 0] match x: case [0]: y = 0 case [1, 0] if (x := x[:0]): y = 1 case [1, 0]: y = 2 self.assertEqual(x, []) self.assertEqual(y, 2) def test_patma_053(self): x = {0} y = None match x: case [0]: y = 0 self.assertEqual(x, {0}) self.assertIs(y, None) def test_patma_054(self): x = set() y = None match x: case []: y = 0 self.assertEqual(x, set()) self.assertIs(y, None) def test_patma_055(self): x = iter([1, 2, 3]) y = None match x: case []: y = 0 self.assertEqual([*x], [1, 2, 3]) self.assertIs(y, None) def test_patma_056(self): x = {} y = None match x: case []: y = 0 self.assertEqual(x, {}) self.assertIs(y, None) def test_patma_057(self): x = {0: False, 1: True} y = None match x: case [0, 1]: y = 0 self.assertEqual(x, {0: False, 1: True}) self.assertIs(y, None) def test_patma_058(self): x = 0 match x: case 0: y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_059(self): x = 0 y = None match x: case False: y = 0 self.assertEqual(x, 0) self.assertEqual(y, None) def test_patma_060(self): x = 0 y = None match x: case 1: y = 0 self.assertEqual(x, 0) self.assertIs(y, None) def test_patma_061(self): x = 0 y = None match x: case None: y = 0 self.assertEqual(x, 0) self.assertIs(y, None) def test_patma_062(self): x = 0 match x: case 0: y = 0 case 0: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_063(self): x = 0 y = None match x: case 1: y = 0 case 1: y = 1 self.assertEqual(x, 0) self.assertIs(y, None) def test_patma_064(self): x = "x" match x: case "x": y = 0 case "y": y = 1 self.assertEqual(x, "x") self.assertEqual(y, 0) def test_patma_065(self): x = "x" match x: case "y": y = 0 case "x": y = 1 self.assertEqual(x, "x") self.assertEqual(y, 1) def test_patma_066(self): x = "x" match x: case "": y = 0 case "x": y = 1 self.assertEqual(x, "x") self.assertEqual(y, 1) def test_patma_067(self): x = b"x" match x: case b"y": y = 0 case b"x": y = 1 self.assertEqual(x, b"x") self.assertEqual(y, 1) def test_patma_068(self): x = 0 match x: case 0 if False: y = 0 case 0: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 1) def test_patma_069(self): x = 0 y = None match x: case 0 if 0: y = 0 case 0 if 0: y = 1 self.assertEqual(x, 0) self.assertIs(y, None) def test_patma_070(self): x = 0 match x: case 0 if True: y = 0 case 0 if True: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_071(self): x = 0 match x: case 0 if 1: y = 0 case 0 if 1: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_072(self): x = 0 match x: case 0 if True: y = 0 case 0 if True: y = 1 y = 2 self.assertEqual(x, 0) self.assertEqual(y, 2) def test_patma_073(self): x = 0 match x: case 0 if 0: y = 0 case 0 if 1: y = 1 y = 2 self.assertEqual(x, 0) self.assertEqual(y, 2) def test_patma_074(self): x = 0 y = None match x: case 0 if not (x := 1): y = 0 case 1: y = 1 self.assertEqual(x, 1) self.assertIs(y, None) def test_patma_075(self): x = "x" match x: case ["x"]: y = 0 case "x": y = 1 self.assertEqual(x, "x") self.assertEqual(y, 1) def test_patma_076(self): x = b"x" match x: case [b"x"]: y = 0 case ["x"]: y = 1 case [120]: y = 2 case b"x": y = 4 self.assertEqual(x, b"x") self.assertEqual(y, 4) def test_patma_077(self): x = bytearray(b"x") y = None match x: case [120]: y = 0 case 120: y = 1 self.assertEqual(x, b"x") self.assertIs(y, None) def test_patma_078(self): x = "" match x: case []: y = 0 case [""]: y = 1 case "": y = 2 self.assertEqual(x, "") self.assertEqual(y, 2) def test_patma_079(self): x = "xxx" match x: case ["x", "x", "x"]: y = 0 case ["xxx"]: y = 1 case "xxx": y = 2 self.assertEqual(x, "xxx") self.assertEqual(y, 2) def test_patma_080(self): x = b"xxx" match x: case [120, 120, 120]: y = 0 case [b"xxx"]: y = 1 case b"xxx": y = 2 self.assertEqual(x, b"xxx") self.assertEqual(y, 2) def test_patma_081(self): x = 0 match x: case 0 if not (x := 1): y = 0 case (0 as z): y = 1 self.assertEqual(x, 1) self.assertEqual(y, 1) self.assertEqual(z, 0) def test_patma_082(self): x = 0 match x: case (1 as z) if not (x := 1): y = 0 case 0: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 1) def test_patma_083(self): x = 0 match x: case (0 as z): y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) self.assertEqual(z, 0) def test_patma_084(self): x = 0 y = None match x: case (1 as z): y = 0 self.assertEqual(x, 0) self.assertIs(y, None) def test_patma_085(self): x = 0 y = None match x: case (0 as z) if (w := 0): y = 0 self.assertEqual(w, 0) self.assertEqual(x, 0) self.assertIs(y, None) self.assertEqual(z, 0) def test_patma_086(self): x = 0 match x: case ((0 as w) as z): y = 0 self.assertEqual(w, 0) self.assertEqual(x, 0) self.assertEqual(y, 0) self.assertEqual(z, 0) def test_patma_087(self): x = 0 match x: case (0 | 1) | 2: y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_088(self): x = 1 match x: case (0 | 1) | 2: y = 0 self.assertEqual(x, 1) self.assertEqual(y, 0) def test_patma_089(self): x = 2 match x: case (0 | 1) | 2: y = 0 self.assertEqual(x, 2) self.assertEqual(y, 0) def test_patma_090(self): x = 3 y = None match x: case (0 | 1) | 2: y = 0 self.assertEqual(x, 3) self.assertIs(y, None) def test_patma_091(self): x = 0 match x: case 0 | (1 | 2): y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_092(self): x = 1 match x: case 0 | (1 | 2): y = 0 self.assertEqual(x, 1) self.assertEqual(y, 0) def test_patma_093(self): x = 2 match x: case 0 | (1 | 2): y = 0 self.assertEqual(x, 2) self.assertEqual(y, 0) def test_patma_094(self): x = 3 y = None match x: case 0 | (1 | 2): y = 0 self.assertEqual(x, 3) self.assertIs(y, None) def test_patma_095(self): x = 0 match x: case -0: y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_096(self): x = 0 match x: case -0.0: y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_097(self): x = 0 match x: case -0j: y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_098(self): x = 0 match x: case -0.0j: y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_099(self): x = -1 match x: case -1: y = 0 self.assertEqual(x, -1) self.assertEqual(y, 0) def test_patma_100(self): x = -1.5 match x: case -1.5: y = 0 self.assertEqual(x, -1.5) self.assertEqual(y, 0) def test_patma_101(self): x = -1j match x: case -1j: y = 0 self.assertEqual(x, -1j) self.assertEqual(y, 0) def test_patma_102(self): x = -1.5j match x: case -1.5j: y = 0 self.assertEqual(x, -1.5j) self.assertEqual(y, 0) def test_patma_103(self): x = 0 match x: case 0 + 0j: y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_104(self): x = 0 match x: case 0 - 0j: y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_105(self): x = 0 match x: case -0 + 0j: y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_106(self): x = 0 match x: case -0 - 0j: y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_107(self): x = 0.25 + 1.75j match x: case 0.25 + 1.75j: y = 0 self.assertEqual(x, 0.25 + 1.75j) self.assertEqual(y, 0) def test_patma_108(self): x = 0.25 - 1.75j match x: case 0.25 - 1.75j: y = 0 self.assertEqual(x, 0.25 - 1.75j) self.assertEqual(y, 0) def test_patma_109(self): x = -0.25 + 1.75j match x: case -0.25 + 1.75j: y = 0 self.assertEqual(x, -0.25 + 1.75j) self.assertEqual(y, 0) def test_patma_110(self): x = -0.25 - 1.75j match x: case -0.25 - 1.75j: y = 0 self.assertEqual(x, -0.25 - 1.75j) self.assertEqual(y, 0) def test_patma_111(self): class A: B = 0 x = 0 match x: case A.B: y = 0 self.assertEqual(A.B, 0) self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_112(self): class A: class B: C = 0 x = 0 match x: case A.B.C: y = 0 self.assertEqual(A.B.C, 0) self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_113(self): class A: class B: C = 0 D = 1 x = 1 match x: case A.B.C: y = 0 case A.B.D: y = 1 self.assertEqual(A.B.C, 0) self.assertEqual(A.B.D, 1) self.assertEqual(x, 1) self.assertEqual(y, 1) def test_patma_114(self): class A: class B: class C: D = 0 x = 0 match x: case A.B.C.D: y = 0 self.assertEqual(A.B.C.D, 0) self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_115(self): class A: class B: class C: D = 0 E = 1 x = 1 match x: case A.B.C.D: y = 0 case A.B.C.E: y = 1 self.assertEqual(A.B.C.D, 0) self.assertEqual(A.B.C.E, 1) self.assertEqual(x, 1) self.assertEqual(y, 1) def test_patma_116(self): match = case = 0 match match: case case: x = 0 self.assertEqual(match, 0) self.assertEqual(case, 0) self.assertEqual(x, 0) def test_patma_117(self): match = case = 0 match case: case match: x = 0 self.assertEqual(match, 0) self.assertEqual(case, 0) self.assertEqual(x, 0) def test_patma_118(self): x = [] match x: case [*_, _]: y = 0 case []: y = 1 self.assertEqual(x, []) self.assertEqual(y, 1) def test_patma_119(self): x = collections.defaultdict(int) match x: case {0: 0}: y = 0 case {}: y = 1 self.assertEqual(x, {}) self.assertEqual(y, 1) def test_patma_120(self): x = collections.defaultdict(int) match x: case {0: 0}: y = 0 case {**z}: y = 1 self.assertEqual(x, {}) self.assertEqual(y, 1) self.assertEqual(z, {}) def test_patma_121(self): match (): case (): x = 0 self.assertEqual(x, 0) def test_patma_122(self): match (0, 1, 2): case (*x,): y = 0 self.assertEqual(x, [0, 1, 2]) self.assertEqual(y, 0) def test_patma_123(self): match (0, 1, 2): case 0, *x: y = 0 self.assertEqual(x, [1, 2]) self.assertEqual(y, 0) def test_patma_124(self): match (0, 1, 2): case (0, 1, *x,): y = 0 self.assertEqual(x, [2]) self.assertEqual(y, 0) def test_patma_125(self): match (0, 1, 2): case 0, 1, 2, *x: y = 0 self.assertEqual(x, []) self.assertEqual(y, 0) def test_patma_126(self): match (0, 1, 2): case *x, 2,: y = 0 self.assertEqual(x, [0, 1]) self.assertEqual(y, 0) def test_patma_127(self): match (0, 1, 2): case (*x, 1, 2): y = 0 self.assertEqual(x, [0]) self.assertEqual(y, 0) def test_patma_128(self): match (0, 1, 2): case *x, 0, 1, 2,: y = 0 self.assertEqual(x, []) self.assertEqual(y, 0) def test_patma_129(self): match (0, 1, 2): case (0, *x, 2): y = 0 self.assertEqual(x, [1]) self.assertEqual(y, 0) def test_patma_130(self): match (0, 1, 2): case 0, 1, *x, 2,: y = 0 self.assertEqual(x, []) self.assertEqual(y, 0) def test_patma_131(self): match (0, 1, 2): case (0, *x, 1, 2): y = 0 self.assertEqual(x, []) self.assertEqual(y, 0) def test_patma_132(self): match (0, 1, 2): case *x,: y = 0 self.assertEqual(x, [0, 1, 2]) self.assertEqual(y, 0) def test_patma_133(self): x = collections.defaultdict(int, {0: 1}) match x: case {1: 0}: y = 0 case {0: 0}: y = 1 case {}: y = 2 self.assertEqual(x, {0: 1}) self.assertEqual(y, 2) def test_patma_134(self): x = collections.defaultdict(int, {0: 1}) match x: case {1: 0}: y = 0 case {0: 0}: y = 1 case {**z}: y = 2 self.assertEqual(x, {0: 1}) self.assertEqual(y, 2) self.assertEqual(z, {0: 1}) def test_patma_135(self): x = collections.defaultdict(int, {0: 1}) match x: case {1: 0}: y = 0 case {0: 0}: y = 1 case {0: _, **z}: y = 2 self.assertEqual(x, {0: 1}) self.assertEqual(y, 2) self.assertEqual(z, {}) def test_patma_136(self): x = {0: 1} match x: case {1: 0}: y = 0 case {0: 0}: y = 0 case {}: y = 1 self.assertEqual(x, {0: 1}) self.assertEqual(y, 1) def test_patma_137(self): x = {0: 1} match x: case {1: 0}: y = 0 case {0: 0}: y = 0 case {**z}: y = 1 self.assertEqual(x, {0: 1}) self.assertEqual(y, 1) self.assertEqual(z, {0: 1}) def test_patma_138(self): x = {0: 1} match x: case {1: 0}: y = 0 case {0: 0}: y = 0 case {0: _, **z}: y = 1 self.assertEqual(x, {0: 1}) self.assertEqual(y, 1) self.assertEqual(z, {}) def test_patma_139(self): x = False match x: case bool(z): y = 0 self.assertIs(x, False) self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_140(self): x = True match x: case bool(z): y = 0 self.assertIs(x, True) self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_141(self): x = bytearray() match x: case bytearray(z): y = 0 self.assertEqual(x, bytearray()) self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_142(self): x = b"" match x: case bytes(z): y = 0 self.assertEqual(x, b"") self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_143(self): x = {} match x: case dict(z): y = 0 self.assertEqual(x, {}) self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_144(self): x = 0.0 match x: case float(z): y = 0 self.assertEqual(x, 0.0) self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_145(self): x = frozenset() match x: case frozenset(z): y = 0 self.assertEqual(x, frozenset()) self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_146(self): x = 0 match x: case int(z): y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_147(self): x = [] match x: case list(z): y = 0 self.assertEqual(x, []) self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_148(self): x = set() match x: case set(z): y = 0 self.assertEqual(x, set()) self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_149(self): x = "" match x: case str(z): y = 0 self.assertEqual(x, "") self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_150(self): x = () match x: case tuple(z): y = 0 self.assertEqual(x, ()) self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_151(self): x = 0 match x,: case y,: z = 0 self.assertEqual(x, 0) self.assertIs(y, x) self.assertIs(z, 0) def test_patma_152(self): w = 0 x = 0 match w, x: case y, z: v = 0 self.assertEqual(w, 0) self.assertEqual(x, 0) self.assertIs(y, w) self.assertIs(z, x) self.assertEqual(v, 0) def test_patma_153(self): x = 0 match w := x,: case y as v,: z = 0 self.assertEqual(x, 0) self.assertIs(y, x) self.assertEqual(z, 0) self.assertIs(w, x) self.assertIs(v, y) def test_patma_154(self): x = 0 y = None match x: case 0 if x: y = 0 self.assertEqual(x, 0) self.assertIs(y, None) def test_patma_155(self): x = 0 y = None match x: case 1e1000: y = 0 self.assertEqual(x, 0) self.assertIs(y, None) def test_patma_156(self): x = 0 match x: case z: y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_157(self): x = 0 y = None match x: case _ if x: y = 0 self.assertEqual(x, 0) self.assertIs(y, None) def test_patma_158(self): x = 0 match x: case -1e1000: y = 0 case 0: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 1) def test_patma_159(self): x = 0 match x: case 0 if not x: y = 0 case 1: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_160(self): x = 0 z = None match x: case 0: y = 0 case z if x: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 0) self.assertIs(z, None) def test_patma_161(self): x = 0 match x: case 0: y = 0 case _: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_162(self): x = 0 match x: case 1 if x: y = 0 case 0: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 1) def test_patma_163(self): x = 0 y = None match x: case 1: y = 0 case 1 if not x: y = 1 self.assertEqual(x, 0) self.assertIs(y, None) def test_patma_164(self): x = 0 match x: case 1: y = 0 case z: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 1) self.assertIs(z, x) def test_patma_165(self): x = 0 match x: case 1 if x: y = 0 case _: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 1) def test_patma_166(self): x = 0 match x: case z if not z: y = 0 case 0 if x: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_167(self): x = 0 match x: case z if not z: y = 0 case 1: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_168(self): x = 0 match x: case z if not x: y = 0 case z: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_169(self): x = 0 match x: case z if not z: y = 0 case _ if x: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 0) self.assertIs(z, x) def test_patma_170(self): x = 0 match x: case _ if not x: y = 0 case 0: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_171(self): x = 0 y = None match x: case _ if x: y = 0 case 1: y = 1 self.assertEqual(x, 0) self.assertIs(y, None) def test_patma_172(self): x = 0 z = None match x: case _ if not x: y = 0 case z if not x: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 0) self.assertIs(z, None) def test_patma_173(self): x = 0 match x: case _ if not x: y = 0 case _: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_174(self): def http_error(status): match status: case 400: return "Bad request" case 401: return "Unauthorized" case 403: return "Forbidden" case 404: return "Not found" case 418: return "I'm a teapot" case _: return "Something else" self.assertEqual(http_error(400), "Bad request") self.assertEqual(http_error(401), "Unauthorized") self.assertEqual(http_error(403), "Forbidden") self.assertEqual(http_error(404), "Not found") self.assertEqual(http_error(418), "I'm a teapot") self.assertEqual(http_error(123), "Something else") self.assertEqual(http_error("400"), "Something else") self.assertEqual(http_error(401 | 403 | 404), "Something else") # 407 def test_patma_175(self): def http_error(status): match status: case 400: return "Bad request" case 401 | 403 | 404: return "Not allowed" case 418: return "I'm a teapot" self.assertEqual(http_error(400), "Bad request") self.assertEqual(http_error(401), "Not allowed") self.assertEqual(http_error(403), "Not allowed") self.assertEqual(http_error(404), "Not allowed") self.assertEqual(http_error(418), "I'm a teapot") self.assertIs(http_error(123), None) self.assertIs(http_error("400"), None) self.assertIs(http_error(401 | 403 | 404), None) # 407 def test_patma_176(self): def whereis(point): match point: case (0, 0): return "Origin" case (0, y): return f"Y={y}" case (x, 0): return f"X={x}" case (x, y): return f"X={x}, Y={y}" case _: return "Not a point" self.assertEqual(whereis((0, 0)), "Origin") self.assertEqual(whereis((0, -1.0)), "Y=-1.0") self.assertEqual(whereis(("X", 0)), "X=X") self.assertEqual(whereis((None, 1j)), "X=None, Y=1j") self.assertEqual(whereis(42), "Not a point") def test_patma_177(self): def whereis(point): match point: case Point(0, 0): return "Origin" case Point(0, y): return f"Y={y}" case Point(x, 0): return f"X={x}" case Point(): return "Somewhere else" case _: return "Not a point" self.assertEqual(whereis(Point(1, 0)), "X=1") self.assertEqual(whereis(Point(0, 0)), "Origin") self.assertEqual(whereis(10), "Not a point") self.assertEqual(whereis(Point(False, False)), "Origin") self.assertEqual(whereis(Point(0, -1.0)), "Y=-1.0") self.assertEqual(whereis(Point("X", 0)), "X=X") self.assertEqual(whereis(Point(None, 1j)), "Somewhere else") self.assertEqual(whereis(Point), "Not a point") self.assertEqual(whereis(42), "Not a point") def test_patma_178(self): def whereis(point): match point: case Point(1, var): return var self.assertEqual(whereis(Point(1, 0)), 0) self.assertIs(whereis(Point(0, 0)), None) def test_patma_179(self): def whereis(point): match point: case Point(1, y=var): return var self.assertEqual(whereis(Point(1, 0)), 0) self.assertIs(whereis(Point(0, 0)), None) def test_patma_180(self): def whereis(point): match point: case Point(x=1, y=var): return var self.assertEqual(whereis(Point(1, 0)), 0) self.assertIs(whereis(Point(0, 0)), None) def test_patma_181(self): def whereis(point): match point: case Point(y=var, x=1): return var self.assertEqual(whereis(Point(1, 0)), 0) self.assertIs(whereis(Point(0, 0)), None) def test_patma_182(self): def whereis(points): match points: case []: return "No points" case [Point(0, 0)]: return "The origin" case [Point(x, y)]: return f"Single point {x}, {y}" case [Point(0, y1), Point(0, y2)]: return f"Two on the Y axis at {y1}, {y2}" case _: return "Something else" self.assertEqual(whereis([]), "No points") self.assertEqual(whereis([Point(0, 0)]), "The origin") self.assertEqual(whereis([Point(0, 1)]), "Single point 0, 1") self.assertEqual(whereis([Point(0, 0), Point(0, 0)]), "Two on the Y axis at 0, 0") self.assertEqual(whereis([Point(0, 1), Point(0, 1)]), "Two on the Y axis at 1, 1") self.assertEqual(whereis([Point(0, 0), Point(1, 0)]), "Something else") self.assertEqual(whereis([Point(0, 0), Point(0, 0), Point(0, 0)]), "Something else") self.assertEqual(whereis([Point(0, 1), Point(0, 1), Point(0, 1)]), "Something else") def test_patma_183(self): def whereis(point): match point: case Point(x, y) if x == y: return f"Y=X at {x}" case Point(x, y): return "Not on the diagonal" self.assertEqual(whereis(Point(0, 0)), "Y=X at 0") self.assertEqual(whereis(Point(0, False)), "Y=X at 0") self.assertEqual(whereis(Point(False, 0)), "Y=X at False") self.assertEqual(whereis(Point(-1 - 1j, -1 - 1j)), "Y=X at (-1-1j)") self.assertEqual(whereis(Point("X", "X")), "Y=X at X") self.assertEqual(whereis(Point("X", "x")), "Not on the diagonal") def test_patma_184(self): class Seq(collections.abc.Sequence): __getitem__ = None def __len__(self): return 0 match Seq(): case []: y = 0 self.assertEqual(y, 0) def test_patma_185(self): class Seq(collections.abc.Sequence): __getitem__ = None def __len__(self): return 42 match Seq(): case [*_]: y = 0 self.assertEqual(y, 0) def test_patma_186(self): class Seq(collections.abc.Sequence): def __getitem__(self, i): return i def __len__(self): return 42 match Seq(): case [x, *_, y]: z = 0 self.assertEqual(x, 0) self.assertEqual(y, 41) self.assertEqual(z, 0) def test_patma_187(self): w = range(10) match w: case [x, y, *rest]: z = 0 self.assertEqual(w, range(10)) self.assertEqual(x, 0) self.assertEqual(y, 1) self.assertEqual(z, 0) self.assertEqual(rest, list(range(2, 10))) def test_patma_188(self): w = range(100) match w: case (x, y, *rest): z = 0 self.assertEqual(w, range(100)) self.assertEqual(x, 0) self.assertEqual(y, 1) self.assertEqual(z, 0) self.assertEqual(rest, list(range(2, 100))) def test_patma_189(self): w = range(1000) match w: case x, y, *rest: z = 0 self.assertEqual(w, range(1000)) self.assertEqual(x, 0) self.assertEqual(y, 1) self.assertEqual(z, 0) self.assertEqual(rest, list(range(2, 1000))) def test_patma_190(self): w = range(1 << 10) match w: case [x, y, *_]: z = 0 self.assertEqual(w, range(1 << 10)) self.assertEqual(x, 0) self.assertEqual(y, 1) self.assertEqual(z, 0) def test_patma_191(self): w = range(1 << 20) match w: case (x, y, *_): z = 0 self.assertEqual(w, range(1 << 20)) self.assertEqual(x, 0) self.assertEqual(y, 1) self.assertEqual(z, 0) def test_patma_192(self): w = range(1 << 30) match w: case x, y, *_: z = 0 self.assertEqual(w, range(1 << 30)) self.assertEqual(x, 0) self.assertEqual(y, 1) self.assertEqual(z, 0) def test_patma_193(self): x = {"bandwidth": 0, "latency": 1} match x: case {"bandwidth": b, "latency": l}: y = 0 self.assertEqual(x, {"bandwidth": 0, "latency": 1}) self.assertIs(b, x["bandwidth"]) self.assertIs(l, x["latency"]) self.assertEqual(y, 0) def test_patma_194(self): x = {"bandwidth": 0, "latency": 1, "key": "value"} match x: case {"latency": l, "bandwidth": b}: y = 0 self.assertEqual(x, {"bandwidth": 0, "latency": 1, "key": "value"}) self.assertIs(l, x["latency"]) self.assertIs(b, x["bandwidth"]) self.assertEqual(y, 0) def test_patma_195(self): x = {"bandwidth": 0, "latency": 1, "key": "value"} match x: case {"bandwidth": b, "latency": l, **rest}: y = 0 self.assertEqual(x, {"bandwidth": 0, "latency": 1, "key": "value"}) self.assertIs(b, x["bandwidth"]) self.assertIs(l, x["latency"]) self.assertEqual(rest, {"key": "value"}) self.assertEqual(y, 0) def test_patma_196(self): x = {"bandwidth": 0, "latency": 1} match x: case {"latency": l, "bandwidth": b, **rest}: y = 0 self.assertEqual(x, {"bandwidth": 0, "latency": 1}) self.assertIs(l, x["latency"]) self.assertIs(b, x["bandwidth"]) self.assertEqual(rest, {}) self.assertEqual(y, 0) def test_patma_197(self): w = [Point(-1, 0), Point(1, 2)] match w: case (Point(x1, y1), Point(x2, y2) as p2): z = 0 self.assertEqual(w, [Point(-1, 0), Point(1, 2)]) self.assertIs(x1, w[0].x) self.assertIs(y1, w[0].y) self.assertIs(p2, w[1]) self.assertIs(x2, w[1].x) self.assertIs(y2, w[1].y) self.assertIs(z, 0) def test_patma_198(self): class Color(enum.Enum): RED = 0 GREEN = 1 BLUE = 2 def f(color): match color: case Color.RED: return "I see red!" case Color.GREEN: return "Grass is green" case Color.BLUE: return "I'm feeling the blues :(" self.assertEqual(f(Color.RED), "I see red!") self.assertEqual(f(Color.GREEN), "Grass is green") self.assertEqual(f(Color.BLUE), "I'm feeling the blues :(") self.assertIs(f(Color), None) self.assertIs(f(0), None) self.assertIs(f(1), None) self.assertIs(f(2), None) self.assertIs(f(3), None) self.assertIs(f(False), None) self.assertIs(f(True), None) self.assertIs(f(2+0j), None) self.assertIs(f(3.0), None) def test_patma_199(self): class Color(int, enum.Enum): RED = 0 GREEN = 1 BLUE = 2 def f(color): match color: case Color.RED: return "I see red!" case Color.GREEN: return "Grass is green" case Color.BLUE: return "I'm feeling the blues :(" self.assertEqual(f(Color.RED), "I see red!") self.assertEqual(f(Color.GREEN), "Grass is green") self.assertEqual(f(Color.BLUE), "I'm feeling the blues :(") self.assertIs(f(Color), None) self.assertEqual(f(0), "I see red!") self.assertEqual(f(1), "Grass is green") self.assertEqual(f(2), "I'm feeling the blues :(") self.assertIs(f(3), None) self.assertEqual(f(False), "I see red!") self.assertEqual(f(True), "Grass is green") self.assertEqual(f(2+0j), "I'm feeling the blues :(") self.assertIs(f(3.0), None) def test_patma_200(self): class Class: __match_args__ = ("a", "b") c = Class() c.a = 0 c.b = 1 match c: case Class(x, y): z = 0 self.assertIs(x, c.a) self.assertIs(y, c.b) self.assertEqual(z, 0) def test_patma_201(self): class Class: __match_args__ = ("a", "b") c = Class() c.a = 0 c.b = 1 match c: case Class(x, b=y): z = 0 self.assertIs(x, c.a) self.assertIs(y, c.b) self.assertEqual(z, 0) def test_patma_202(self): class Parent: __match_args__ = "a", "b" class Child(Parent): __match_args__ = ("c", "d") c = Child() c.a = 0 c.b = 1 match c: case Parent(x, y): z = 0 self.assertIs(x, c.a) self.assertIs(y, c.b) self.assertEqual(z, 0) def test_patma_203(self): class Parent: __match_args__ = ("a", "b") class Child(Parent): __match_args__ = "c", "d" c = Child() c.a = 0 c.b = 1 match c: case Parent(x, b=y): z = 0 self.assertIs(x, c.a) self.assertIs(y, c.b) self.assertEqual(z, 0) def test_patma_204(self): def f(w): match w: case 42: out = locals() del out["w"] return out self.assertEqual(f(42), {}) self.assertIs(f(0), None) self.assertEqual(f(42.0), {}) self.assertIs(f("42"), None) def test_patma_205(self): def f(w): match w: case 42.0: out = locals() del out["w"] return out self.assertEqual(f(42.0), {}) self.assertEqual(f(42), {}) self.assertIs(f(0.0), None) self.assertIs(f(0), None) def test_patma_206(self): def f(w): match w: case 1 | 2 | 3: out = locals() del out["w"] return out self.assertEqual(f(1), {}) self.assertEqual(f(2), {}) self.assertEqual(f(3), {}) self.assertEqual(f(3.0), {}) self.assertIs(f(0), None) self.assertIs(f(4), None) self.assertIs(f("1"), None) def test_patma_207(self): def f(w): match w: case [1, 2] | [3, 4]: out = locals() del out["w"] return out self.assertEqual(f([1, 2]), {}) self.assertEqual(f([3, 4]), {}) self.assertIs(f(42), None) self.assertIs(f([2, 3]), None) self.assertIs(f([1, 2, 3]), None) self.assertEqual(f([1, 2.0]), {}) def test_patma_208(self): def f(w): match w: case x: out = locals() del out["w"] return out self.assertEqual(f(42), {"x": 42}) self.assertEqual(f((1, 2)), {"x": (1, 2)}) self.assertEqual(f(None), {"x": None}) def test_patma_209(self): def f(w): match w: case _: out = locals() del out["w"] return out self.assertEqual(f(42), {}) self.assertEqual(f(None), {}) self.assertEqual(f((1, 2)), {}) def test_patma_210(self): def f(w): match w: case (x, y, z): out = locals() del out["w"] return out self.assertEqual(f((1, 2, 3)), {"x": 1, "y": 2, "z": 3}) self.assertIs(f((1, 2)), None) self.assertIs(f((1, 2, 3, 4)), None) self.assertIs(f(123), None) self.assertIs(f("abc"), None) self.assertIs(f(b"abc"), None) self.assertEqual(f(array.array("b", b"abc")), {'x': 97, 'y': 98, 'z': 99}) self.assertEqual(f(memoryview(b"abc")), {"x": 97, "y": 98, "z": 99}) self.assertIs(f(bytearray(b"abc")), None) def test_patma_211(self): def f(w): match w: case {"x": x, "y": "y", "z": z}: out = locals() del out["w"] return out self.assertEqual(f({"x": "x", "y": "y", "z": "z"}), {"x": "x", "z": "z"}) self.assertEqual(f({"x": "x", "y": "y", "z": "z", "a": "a"}), {"x": "x", "z": "z"}) self.assertIs(f(({"x": "x", "y": "yy", "z": "z", "a": "a"})), None) self.assertIs(f(({"x": "x", "y": "y"})), None) def test_patma_212(self): def f(w): match w: case Point(int(xx), y="hello"): out = locals() del out["w"] return out self.assertEqual(f(Point(42, "hello")), {"xx": 42}) def test_patma_213(self): def f(w): match w: case (p, q) as x: out = locals() del out["w"] return out self.assertEqual(f((1, 2)), {"p": 1, "q": 2, "x": (1, 2)}) self.assertEqual(f([1, 2]), {"p": 1, "q": 2, "x": [1, 2]}) self.assertIs(f(12), None) self.assertIs(f((1, 2, 3)), None) def test_patma_214(self): def f(): match 42: case 42: return locals() self.assertEqual(set(f()), set()) def test_patma_215(self): def f(): match 1: case 1 | 2 | 3: return locals() self.assertEqual(set(f()), set()) def test_patma_216(self): def f(): match ...: case _: return locals() self.assertEqual(set(f()), set()) def test_patma_217(self): def f(): match ...: case abc: return locals() self.assertEqual(set(f()), {"abc"}) def test_patma_218(self): def f(): match ..., ...: case a, b: return locals() self.assertEqual(set(f()), {"a", "b"}) def test_patma_219(self): def f(): match {"k": ..., "l": ...}: case {"k": a, "l": b}: return locals() self.assertEqual(set(f()), {"a", "b"}) def test_patma_220(self): def f(): match Point(..., ...): case Point(x, y=y): return locals() self.assertEqual(set(f()), {"x", "y"}) def test_patma_221(self): def f(): match ...: case b as a: return locals() self.assertEqual(set(f()), {"a", "b"}) def test_patma_222(self): def f(x): match x: case _: return 0 self.assertEqual(f(0), 0) self.assertEqual(f(1), 0) self.assertEqual(f(2), 0) self.assertEqual(f(3), 0) def test_patma_223(self): def f(x): match x: case 0: return 0 self.assertEqual(f(0), 0) self.assertIs(f(1), None) self.assertIs(f(2), None) self.assertIs(f(3), None) def test_patma_224(self): def f(x): match x: case 0: return 0 case _: return 1 self.assertEqual(f(0), 0) self.assertEqual(f(1), 1) self.assertEqual(f(2), 1) self.assertEqual(f(3), 1) def test_patma_225(self): def f(x): match x: case 0: return 0 case 1: return 1 self.assertEqual(f(0), 0) self.assertEqual(f(1), 1) self.assertIs(f(2), None) self.assertIs(f(3), None) def test_patma_226(self): def f(x): match x: case 0: return 0 case 1: return 1 case _: return 2 self.assertEqual(f(0), 0) self.assertEqual(f(1), 1) self.assertEqual(f(2), 2) self.assertEqual(f(3), 2) def test_patma_227(self): def f(x): match x: case 0: return 0 case 1: return 1 case 2: return 2 self.assertEqual(f(0), 0) self.assertEqual(f(1), 1) self.assertEqual(f(2), 2) self.assertIs(f(3), None) def test_patma_228(self): match(): case(): x = 0 self.assertEqual(x, 0) def test_patma_229(self): x = 0 match(x): case(x): y = 0 self.assertEqual(x, 0) self.assertEqual(y, 0) def test_patma_230(self): x = 0 match x: case False: y = 0 case 0: y = 1 self.assertEqual(x, 0) self.assertEqual(y, 1) def test_patma_231(self): x = 1 match x: case True: y = 0 case 1: y = 1 self.assertEqual(x, 1) self.assertEqual(y, 1) def test_patma_232(self): class Eq: def __eq__(self, other): return True x = eq = Eq() y = None match x: case None: y = 0 self.assertIs(x, eq) self.assertEqual(y, None) def test_patma_233(self): x = False match x: case False: y = 0 self.assertIs(x, False) self.assertEqual(y, 0) def test_patma_234(self): x = True match x: case True: y = 0 self.assertIs(x, True) self.assertEqual(y, 0) def test_patma_235(self): x = None match x: case None: y = 0 self.assertIs(x, None) self.assertEqual(y, 0) def test_patma_236(self): x = 0 match x: case (0 as w) as z: y = 0 self.assertEqual(w, 0) self.assertEqual(x, 0) self.assertEqual(y, 0) self.assertEqual(z, 0) def test_patma_237(self): x = 0 match x: case (0 as w) as z: y = 0 self.assertEqual(w, 0) self.assertEqual(x, 0) self.assertEqual(y, 0) self.assertEqual(z, 0) def test_patma_238(self): x = ((0, 1), (2, 3)) match x: case ((a as b, c as d) as e) as w, ((f as g, h) as i) as z: y = 0 self.assertEqual(a, 0) self.assertEqual(b, 0) self.assertEqual(c, 1) self.assertEqual(d, 1) self.assertEqual(e, (0, 1)) self.assertEqual(f, 2) self.assertEqual(g, 2) self.assertEqual(h, 3) self.assertEqual(i, (2, 3)) self.assertEqual(w, (0, 1)) self.assertEqual(x, ((0, 1), (2, 3))) self.assertEqual(y, 0) self.assertEqual(z, (2, 3)) def test_patma_239(self): x = collections.UserDict({0: 1, 2: 3}) match x: case {2: 3}: y = 0 self.assertEqual(x, {0: 1, 2: 3}) self.assertEqual(y, 0) def test_patma_240(self): x = collections.UserDict({0: 1, 2: 3}) match x: case {2: 3, **z}: y = 0 self.assertEqual(x, {0: 1, 2: 3}) self.assertEqual(y, 0) self.assertEqual(z, {0: 1}) def test_patma_241(self): x = [[{0: 0}]] match x: case list([({-0-0j: int(real=0+0j, imag=0-0j) | (1) as z},)]): y = 0 self.assertEqual(x, [[{0: 0}]]) self.assertEqual(y, 0) self.assertEqual(z, 0) def test_patma_242(self): x = range(3) match x: case [y, *_, z]: w = 0 self.assertEqual(w, 0) self.assertEqual(x, range(3)) self.assertEqual(y, 0) self.assertEqual(z, 2) def test_patma_243(self): x = range(3) match x: case [_, *_, y]: z = 0 self.assertEqual(x, range(3)) self.assertEqual(y, 2) self.assertEqual(z, 0) def test_patma_244(self): x = range(3) match x: case [*_, y]: z = 0 self.assertEqual(x, range(3)) self.assertEqual(y, 2) self.assertEqual(z, 0) def test_patma_245(self): x = {"y": 1} match x: case {"y": (0 as y) | (1 as y)}: z = 0 self.assertEqual(x, {"y": 1}) self.assertEqual(y, 1) self.assertEqual(z, 0) def test_patma_246(self): def f(x): match x: case ((a, b, c, d, e, f, g, h, i, 9) | (h, g, i, a, b, d, e, c, f, 10) | (g, b, a, c, d, -5, e, h, i, f) | (-1, d, f, b, g, e, i, a, h, c)): w = 0 out = locals() del out["x"] return out alts = [ dict(a=0, b=1, c=2, d=3, e=4, f=5, g=6, h=7, i=8, w=0), dict(h=1, g=2, i=3, a=4, b=5, d=6, e=7, c=8, f=9, w=0), dict(g=0, b=-1, a=-2, c=-3, d=-4, e=-6, h=-7, i=-8, f=-9, w=0), dict(d=-2, f=-3, b=-4, g=-5, e=-6, i=-7, a=-8, h=-9, c=-10, w=0), dict(), ] self.assertEqual(f(range(10)), alts[0]) self.assertEqual(f(range(1, 11)), alts[1]) self.assertEqual(f(range(0, -10, -1)), alts[2]) self.assertEqual(f(range(-1, -11, -1)), alts[3]) self.assertEqual(f(range(10, 20)), alts[4]) def test_patma_247(self): def f(x): match x: case [y, (a, b, c, d, e, f, g, h, i, 9) | (h, g, i, a, b, d, e, c, f, 10) | (g, b, a, c, d, -5, e, h, i, f) | (-1, d, f, b, g, e, i, a, h, c), z]: w = 0 out = locals() del out["x"] return out alts = [ dict(a=0, b=1, c=2, d=3, e=4, f=5, g=6, h=7, i=8, w=0, y=False, z=True), dict(h=1, g=2, i=3, a=4, b=5, d=6, e=7, c=8, f=9, w=0, y=False, z=True), dict(g=0, b=-1, a=-2, c=-3, d=-4, e=-6, h=-7, i=-8, f=-9, w=0, y=False, z=True), dict(d=-2, f=-3, b=-4, g=-5, e=-6, i=-7, a=-8, h=-9, c=-10, w=0, y=False, z=True), dict(), ] self.assertEqual(f((False, range(10), True)), alts[0]) self.assertEqual(f((False, range(1, 11), True)), alts[1]) self.assertEqual(f((False, range(0, -10, -1), True)), alts[2]) self.assertEqual(f((False, range(-1, -11, -1), True)), alts[3]) self.assertEqual(f((False, range(10, 20), True)), alts[4]) class TestSyntaxErrors(unittest.TestCase): def assert_syntax_error(self, code: str): with self.assertRaises(SyntaxError): compile(inspect.cleandoc(code), "<test>", "exec") def test_alternative_patterns_bind_different_names_0(self): self.assert_syntax_error(""" match ...: case "a" | a: pass """) def test_alternative_patterns_bind_different_names_1(self): self.assert_syntax_error(""" match ...: case [a, [b] | [c] | [d]]: pass """) def test_attribute_name_repeated_in_class_pattern(self): self.assert_syntax_error(""" match ...: case Class(a=_, a=_): pass """) def test_imaginary_number_required_in_complex_literal_0(self): self.assert_syntax_error(""" match ...: case 0+0: pass """) def test_imaginary_number_required_in_complex_literal_1(self): self.assert_syntax_error(""" match ...: case {0+0: _}: pass """) def test_invalid_syntax_0(self): self.assert_syntax_error(""" match ...: case {**rest, "key": value}: pass """) def test_invalid_syntax_1(self): self.assert_syntax_error(""" match ...: case {"first": first, **rest, "last": last}: pass """) def test_invalid_syntax_2(self): self.assert_syntax_error(""" match ...: case {**_}: pass """) def test_invalid_syntax_3(self): self.assert_syntax_error(""" match ...: case 42 as _: pass """) def test_mapping_pattern_keys_may_only_match_literals_and_attribute_lookups(self): self.assert_syntax_error(""" match ...: case {f"": _}: pass """) def test_multiple_assignments_to_name_in_pattern_0(self): self.assert_syntax_error(""" match ...: case a, a: pass """) def test_multiple_assignments_to_name_in_pattern_1(self): self.assert_syntax_error(""" match ...: case {"k": a, "l": a}: pass """) def test_multiple_assignments_to_name_in_pattern_2(self): self.assert_syntax_error(""" match ...: case MyClass(x, x): pass """) def test_multiple_assignments_to_name_in_pattern_3(self): self.assert_syntax_error(""" match ...: case MyClass(x=x, y=x): pass """) def test_multiple_assignments_to_name_in_pattern_4(self): self.assert_syntax_error(""" match ...: case MyClass(x, y=x): pass """) def test_multiple_assignments_to_name_in_pattern_5(self): self.assert_syntax_error(""" match ...: case a as a: pass """) def test_multiple_starred_names_in_sequence_pattern_0(self): self.assert_syntax_error(""" match ...: case *a, b, *c, d, *e: pass """) def test_multiple_starred_names_in_sequence_pattern_1(self): self.assert_syntax_error(""" match ...: case a, *b, c, *d, e: pass """) def test_name_capture_makes_remaining_patterns_unreachable_0(self): self.assert_syntax_error(""" match ...: case a | "a": pass """) def test_name_capture_makes_remaining_patterns_unreachable_1(self): self.assert_syntax_error(""" match 42: case x: pass case y: pass """) def test_name_capture_makes_remaining_patterns_unreachable_2(self): self.assert_syntax_error(""" match ...: case x | [_ as x] if x: pass """) def test_name_capture_makes_remaining_patterns_unreachable_3(self): self.assert_syntax_error(""" match ...: case x: pass case [x] if x: pass """) def test_name_capture_makes_remaining_patterns_unreachable_4(self): self.assert_syntax_error(""" match ...: case x: pass case _: pass """) def test_patterns_may_only_match_literals_and_attribute_lookups_0(self): self.assert_syntax_error(""" match ...: case f"": pass """) def test_patterns_may_only_match_literals_and_attribute_lookups_1(self): self.assert_syntax_error(""" match ...: case f"{x}": pass """) def test_real_number_required_in_complex_literal_0(self): self.assert_syntax_error(""" match ...: case 0j+0: pass """) def test_real_number_required_in_complex_literal_1(self): self.assert_syntax_error(""" match ...: case 0j+0j: pass """) def test_real_number_required_in_complex_literal_2(self): self.assert_syntax_error(""" match ...: case {0j+0: _}: pass """) def test_real_number_required_in_complex_literal_3(self): self.assert_syntax_error(""" match ...: case {0j+0j: _}: pass """) def test_wildcard_makes_remaining_patterns_unreachable_0(self): self.assert_syntax_error(""" match ...: case _ | _: pass """) def test_wildcard_makes_remaining_patterns_unreachable_1(self): self.assert_syntax_error(""" match ...: case (_ as x) | [x]: pass """) def test_wildcard_makes_remaining_patterns_unreachable_2(self): self.assert_syntax_error(""" match ...: case _ | _ if condition(): pass """) def test_wildcard_makes_remaining_patterns_unreachable_3(self): self.assert_syntax_error(""" match ...: case _: pass case None: pass """) def test_wildcard_makes_remaining_patterns_unreachable_4(self): self.assert_syntax_error(""" match ...: case (None | _) | _: pass """) def test_wildcard_makes_remaining_patterns_unreachable_5(self): self.assert_syntax_error(""" match ...: case _ | (True | False): pass """) def test_mapping_pattern_duplicate_key(self): self.assert_syntax_error(""" match ...: case {"a": _, "a": _}: pass """) def test_mapping_pattern_duplicate_key_edge_case0(self): self.assert_syntax_error(""" match ...: case {0: _, False: _}: pass """) def test_mapping_pattern_duplicate_key_edge_case1(self): self.assert_syntax_error(""" match ...: case {0: _, 0.0: _}: pass """) def test_mapping_pattern_duplicate_key_edge_case2(self): self.assert_syntax_error(""" match ...: case {0: _, -0: _}: pass """) def test_mapping_pattern_duplicate_key_edge_case3(self): self.assert_syntax_error(""" match ...: case {0: _, 0j: _}: pass """) class TestTypeErrors(unittest.TestCase): def test_accepts_positional_subpatterns_0(self): class Class: __match_args__ = () x = Class() y = z = None with self.assertRaises(TypeError): match x: case Class(y): z = 0 self.assertIs(y, None) self.assertIs(z, None) def test_accepts_positional_subpatterns_1(self): x = range(10) y = None with self.assertRaises(TypeError): match x: case range(10): y = 0 self.assertEqual(x, range(10)) self.assertIs(y, None) def test_got_multiple_subpatterns_for_attribute_0(self): class Class: __match_args__ = ("a", "a") a = None x = Class() w = y = z = None with self.assertRaises(TypeError): match x: case Class(y, z): w = 0 self.assertIs(w, None) self.assertIs(y, None) self.assertIs(z, None) def test_got_multiple_subpatterns_for_attribute_1(self): class Class: __match_args__ = ("a",) a = None x = Class() w = y = z = None with self.assertRaises(TypeError): match x: case Class(y, a=z): w = 0 self.assertIs(w, None) self.assertIs(y, None) self.assertIs(z, None) def test_match_args_elements_must_be_strings(self): class Class: __match_args__ = (None,) x = Class() y = z = None with self.assertRaises(TypeError): match x: case Class(y): z = 0 self.assertIs(y, None) self.assertIs(z, None) def test_match_args_must_be_a_tuple_0(self): class Class: __match_args__ = None x = Class() y = z = None with self.assertRaises(TypeError): match x: case Class(y): z = 0 self.assertIs(y, None) self.assertIs(z, None) def test_match_args_must_be_a_tuple_1(self): class Class: __match_args__ = "XYZ" x = Class() y = z = None with self.assertRaises(TypeError): match x: case Class(y): z = 0 self.assertIs(y, None) self.assertIs(z, None) def test_match_args_must_be_a_tuple_2(self): class Class: __match_args__ = ["spam", "eggs"] spam = 0 eggs = 1 x = Class() w = y = z = None with self.assertRaises(TypeError): match x: case Class(y, z): w = 0 self.assertIs(w, None) self.assertIs(y, None) self.assertIs(z, None) class TestValueErrors(unittest.TestCase): def test_mapping_pattern_checks_duplicate_key_1(self): class Keys: KEY = "a" x = {"a": 0, "b": 1} w = y = z = None with self.assertRaises(ValueError): match x: case {Keys.KEY: y, "a": z}: w = 0 self.assertIs(w, None) self.assertIs(y, None) self.assertIs(z, None) class TestTracing(unittest.TestCase): @staticmethod def _trace(func, *args, **kwargs): actual_linenos = [] def trace(frame, event, arg): if event == "line" and frame.f_code.co_name == func.__name__: assert arg is None relative_lineno = frame.f_lineno - func.__code__.co_firstlineno actual_linenos.append(relative_lineno) return trace old_trace = sys.gettrace() sys.settrace(trace) try: func(*args, **kwargs) finally: sys.settrace(old_trace) return actual_linenos def test_default_wildcard(self): def f(command): # 0 match command.split(): # 1 case ["go", direction] if direction in "nesw": # 2 return f"go {direction}" # 3 case ["go", _]: # 4 return "no go" # 5 case _: # 6 return "default" # 7 self.assertListEqual(self._trace(f, "go n"), [1, 2, 3]) self.assertListEqual(self._trace(f, "go x"), [1, 2, 4, 5]) self.assertListEqual(self._trace(f, "spam"), [1, 2, 4, 6, 7]) def test_default_capture(self): def f(command): # 0 match command.split(): # 1 case ["go", direction] if direction in "nesw": # 2 return f"go {direction}" # 3 case ["go", _]: # 4 return "no go" # 5 case x: # 6 return x # 7 self.assertListEqual(self._trace(f, "go n"), [1, 2, 3]) self.assertListEqual(self._trace(f, "go x"), [1, 2, 4, 5]) self.assertListEqual(self._trace(f, "spam"), [1, 2, 4, 6, 7]) def test_no_default(self): def f(command): # 0 match command.split(): # 1 case ["go", direction] if direction in "nesw": # 2 return f"go {direction}" # 3 case ["go", _]: # 4 return "no go" # 5 self.assertListEqual(self._trace(f, "go n"), [1, 2, 3]) self.assertListEqual(self._trace(f, "go x"), [1, 2, 4, 5]) self.assertListEqual(self._trace(f, "spam"), [1, 2, 4]) def test_only_default_wildcard(self): def f(command): # 0 match command.split(): # 1 case _: # 2 return "default" # 3 self.assertListEqual(self._trace(f, "go n"), [1, 2, 3]) self.assertListEqual(self._trace(f, "go x"), [1, 2, 3]) self.assertListEqual(self._trace(f, "spam"), [1, 2, 3]) def test_only_default_capture(self): def f(command): # 0 match command.split(): # 1 case x: # 2 return x # 3 self.assertListEqual(self._trace(f, "go n"), [1, 2, 3]) self.assertListEqual(self._trace(f, "go x"), [1, 2, 3]) self.assertListEqual(self._trace(f, "spam"), [1, 2, 3]) def test_parser_deeply_nested_patterns(self): # Deeply nested patterns can cause exponential backtracking when parsing. # See gh-93671 for more information. levels = 100 patterns = [ "A" + "(" * levels + ")" * levels, "{1:" * levels + "1" + "}" * levels, "[" * levels + "1" + "]" * levels, ] for pattern in patterns: with self.subTest(pattern): code = inspect.cleandoc(""" match None: case {}: pass """.format(pattern)) compile(code, "<string>", "exec") if __name__ == "__main__": """ # From inside environment using this Python, with pyperf installed: sudo $(which pyperf) system tune && \ $(which python) -m test.test_patma --rigorous; \ sudo $(which pyperf) system reset """ import pyperf class PerfPatma(TestPatma): def assertEqual(*_, **__): pass def assertIs(*_, **__): pass def assertRaises(*_, **__): assert False, "this test should be a method of a different class!" def run_perf(self, count): tests = [] for attr in vars(TestPatma): if attr.startswith("test_"): tests.append(getattr(self, attr)) tests *= count start = pyperf.perf_counter() for test in tests: test() return pyperf.perf_counter() - start runner = pyperf.Runner() runner.bench_time_func("patma", PerfPatma().run_perf)