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Fix weak comparison between '0' and false #99

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merged 1 commit into from
Sep 14, 2022
Merged

Fix weak comparison between '0' and false #99

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2 changes: 1 addition & 1 deletion src/ScalarComparator.php
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Original file line number Diff line number Diff line change
Expand Up @@ -51,7 +51,7 @@ public function assertEquals($expected, $actual, $delta = 0.0, $canonicalize = f

// always compare as strings to avoid strange behaviour
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This behaviour exist since 9 years, changing it may be a BC break.

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that is true, but 0 equals false, so '0' must too, it is also the php behaviour of weak comparison

// otherwise 0 == 'Foobar'
if (\is_string($expected) || \is_string($actual)) {
if ((\is_string($expected) && !\is_bool($actual)) || (\is_string($actual) && !\is_bool($expected))) {
$expectedToCompare = (string) $expectedToCompare;
$actualToCompare = (string) $actualToCompare;

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2 changes: 2 additions & 0 deletions tests/ScalarComparatorTest.php
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Expand Up @@ -46,6 +46,7 @@ public function acceptsSucceedsProvider()
['1', true],
[1, true],
[0, false],
['0', false],
[0.1, '0.1']
];
}
Expand Down Expand Up @@ -77,6 +78,7 @@ public function assertEqualsSucceedsProvider()
['1', true],
[1, true],
[0, false],
['0', false],
[0.1, '0.1'],
[false, null],
[false, false],
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