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bpo-38870: Use subTest in test_unparse for better error reporting #20141

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Merged
pablogsal merged 4 commits into from
May 17, 2020
Merged

bpo-38870: Use subTest in test_unparse for better error reporting #20141

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e7e156a
Use subTest in test_unparse for better error reporting
pablogsal May 17, 2020
ca73ed6
fixup! Use subTest in test_unparse for better error reporting
pablogsal May 17, 2020
c6e8a43
Update Lib/test/test_unparse.py
pablogsal May 17, 2020
bc66e87
Update Lib/test/test_unparse.py
pablogsal May 17, 2020
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18 changes: 11 additions & 7 deletions 18 Lib/test/test_unparse.py
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Original file line number Diff line number Diff line change
Expand Up @@ -120,13 +120,15 @@ def assertASTEqual(self, ast1, ast2):
self.assertEqual(ast.dump(ast1), ast.dump(ast2))

def check_ast_roundtrip(self, code1, **kwargs):
ast1 = ast.parse(code1, **kwargs)
code2 = ast.unparse(ast1)
ast2 = ast.parse(code2, **kwargs)
self.assertASTEqual(ast1, ast2)
with self.subTest(code1=code1, ast_parse_kwargs=kwargs):
ast1 = ast.parse(code1, **kwargs)
code2 = ast.unparse(ast1)
ast2 = ast.parse(code2, **kwargs)
self.assertASTEqual(ast1, ast2)

def check_invalid(self, node, raises=ValueError):
self.assertRaises(raises, ast.unparse, node)
with self.subTest(node=node):
self.assertRaises(raises, ast.unparse, node)

def get_source(self, code1, code2=None):
code2 = code2 or code1
Expand All @@ -135,11 +137,13 @@ def get_source(self, code1, code2=None):

def check_src_roundtrip(self, code1, code2=None):
code1, code2 = self.get_source(code1, code2)
self.assertEqual(code2, code1)
with self.subTest(code1=code1, code2=code2):
self.assertEqual(code2, code1)

def check_src_dont_roundtrip(self, code1, code2=None):
code1, code2 = self.get_source(code1, code2)
self.assertNotEqual(code2, code1)
with self.subTest(code1=code1, code2=code2):
self.assertNotEqual(code2, code1)

class UnparseTestCase(ASTTestCase):
# Tests for specific bugs found in earlier versions of unparse
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