function StringItemTest::testGenerateSampleValue

Tests generating sample values.

@covers ::generateSampleValue @dataProvider providerMaxLength

Parameters

int $max_length: Maximum field length.

File

core/tests/Drupal/Tests/Core/Field/StringItemTest.php, line 29

Class

StringItemTest

Defines a test for the StringItem field-type.

Namespace

Code

public function testGenerateSampleValue(int $max_length) : void {
    foreach ([
        TRUE,
        FALSE,
    ] as $unique) {
        $definition = $this->prophesize(FieldDefinitionInterface::class);
        $constraints = $unique ? [
            $this->prophesize(UniqueFieldConstraint::class),
        ] : [];
        $definition->getConstraint('UniqueField')
            ->willReturn($constraints);
        $definition->getSetting('max_length')
            ->willReturn($max_length);
        for ($i = 0; $i < 1000; $i++) {
            $sample_value = StringItem::generateSampleValue($definition->reveal());
            // When the field value needs to be unique, the generated sample value
            // should match the maximum length to ensure sufficient entropy.
            if ($unique) {
                $this->assertEquals($max_length, mb_strlen($sample_value['value']));
            }
            else {
                $this->assertLessThanOrEqual($max_length, mb_strlen($sample_value['value']));
            }
        }
    }
}