function ThemeTest::testThemeDataTypes
Same name and namespace in other branches
- 9 core/modules/system/tests/src/Kernel/Theme/ThemeTest.php \Drupal\Tests\system\Kernel\Theme\ThemeTest::testThemeDataTypes()
- 8.9.x core/modules/system/tests/src/Kernel/Theme/ThemeTest.php \Drupal\Tests\system\Kernel\Theme\ThemeTest::testThemeDataTypes()
- 10 core/modules/system/tests/src/Kernel/Theme/ThemeTest.php \Drupal\Tests\system\Kernel\Theme\ThemeTest::testThemeDataTypes()
Tests that ThemeManager renders the expected data types.
File
-
core/
modules/ system/ tests/ src/ Kernel/ Theme/ ThemeTest.php, line 55
Class
- ThemeTest
- Tests low-level theme functions.
Namespace
Drupal\Tests\system\Kernel\ThemeCode
public function testThemeDataTypes() : void {
// theme_test_false is an implemented theme hook so \Drupal::theme() service
// should return a string or an object that implements MarkupInterface,
// even though the theme function itself can return anything.
$types = [
'null' => NULL,
'false' => FALSE,
'integer' => 1,
'string' => 'foo',
'empty_string' => '',
];
foreach ($types as $type => $example) {
$output = \Drupal::theme()->render('theme_test_foo', [
'foo' => $example,
]);
$this->assertTrue($output instanceof MarkupInterface || is_string($output), "\\Drupal::theme() returns an object that implements MarkupInterface or a string for data type {$type}.");
if ($output instanceof MarkupInterface) {
$this->assertSame((string) $example, $output->__toString());
}
elseif (is_string($output)) {
$this->assertSame('', $output, 'A string will be return when the theme returns an empty string.');
}
}
// suggestion_not_implemented is not an implemented theme hook so \Drupal::theme() service
// should return FALSE instead of a string.
$output = \Drupal::theme()->render([
'suggestion_not_implemented',
], []);
$this->assertFalse($output, '\\Drupal::theme() returns FALSE when a hook suggestion is not implemented.');
}
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