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[test] Implement string "lambda x: condition(x)" as an expected value 

Semantics equivalent to `assert condition(got)`
pull/20291/merge
dirkf 2022-08-09 19:34:34 +01:00
parent 82e4eca711
commit 2ced5a7912
1 changed files with 7 additions and 1 deletions
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8
test/helper.py
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@ -128,6 +128,12 @@ def expect_value(self, got, expected, field):
self.assertTrue( self.assertTrue(
contains_str in got, contains_str in got,
'field %s (value: %r) should contain %r' % (field, got, contains_str)) 'field %s (value: %r) should contain %r' % (field, got, contains_str))
elif isinstance(expected, compat_str) and re.match(r'^lambda \w+:', expected):
fn = eval(expected)
suite = expected.split(':', 1)[1].strip()
self.assertTrue(
fn(got),
'Expected field %s to meet condition %s, but value %r failed ' % (field, suite, got))
elif isinstance(expected, type): elif isinstance(expected, type):
self.assertTrue( self.assertTrue(
isinstance(got, expected), isinstance(got, expected),
@ -137,7 +143,7 @@ def expect_value(self, got, expected, field):
elif isinstance(expected, list) and isinstance(got, list): elif isinstance(expected, list) and isinstance(got, list):
self.assertEqual( self.assertEqual(
len(expected), len(got), len(expected), len(got),
'Expect a list of length %d, but got a list of length %d for field %s' % ( 'Expected a list of length %d, but got a list of length %d for field %s' % (
len(expected), len(got), field)) len(expected), len(got), field))
for index, (item_got, item_expected) in enumerate(zip(got, expected)): for index, (item_got, item_expected) in enumerate(zip(got, expected)):
type_got = type(item_got) type_got = type(item_got)