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Fix undefined array key 0 in Query/Filter isEmpty #881

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Fix undefined array key 0 in Query/Filter isEmpty #881

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3 changes: 2 additions & 1 deletion src/Database/Validator/Query/Filter.php
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Original file line number Diff line number Diff line change
Expand Up @@ -316,7 +316,8 @@ protected function isEmpty(array $values): bool
return true;
}

if (is_array($values[0]) && count($values[0]) === 0) {
$firstKey = \array_key_first($values);
if (\is_array($values[$firstKey]) && \count($values[$firstKey]) === 0) {
return true;
}

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10 changes: 10 additions & 0 deletions tests/unit/Validator/Query/FilterTest.php
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Original file line number Diff line number Diff line change
Expand Up @@ -122,6 +122,16 @@ public function testEmptyValues(): void
$this->assertEquals('Equal queries require at least one value.', $this->validator->getDescription());
}

public function testIsEmptyHandlesNonZeroIndexedValues(): void
{
// Sparse / associative arrays must not trigger "Undefined array key 0".
$sparse = new Query(Query::TYPE_EQUAL, 'string', [1 => 'super']);
$this->assertTrue($this->validator->isValid($sparse));

$assoc = new Query(Query::TYPE_CONTAINS, 'string_array', ['foo' => 'super']);
$this->assertTrue($this->validator->isValid($assoc));
}

public function testMaxValuesCount(): void
{
$max = $this->validator->getMaxValuesCount();
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