function DescriptionTraitTest::testTemplateFile

Make sure that the trait finds the template file and renders it.

File

tests/src/Kernel/DescriptionTraitTest.php, line 23

Class

DescriptionTraitTest

Test of the Description Trait.

Namespace

Code

public function testTemplateFile() {
    $sample_controller = SampleExampleController::create($this->container);
    // We want to test ::getDescriptionTemplatePath(), which is a protected
    // method. Use a little of the Old Black Reflection Magic.
    $ref_get_path = new \ReflectionMethod($sample_controller, 'getDescriptionTemplatePath');
    $ref_get_path->setAccessible(TRUE);
    $this->assertFileExists($ref_get_path->invoke($sample_controller));
    // And get our render output.
    $render_array = $sample_controller->description();
    // We cast to string, since renderPlain() returns a markup object.
    $output = (string) $this->container
        ->get('renderer')
        ->renderPlain($render_array);
    // Did the template load?
    $this->assertStringContainsString('Template loaded!', $output);
    // Were the variables resolved correctly?
    $this->assertStringContainsString('Used in module: examples_description_test.', $output);
    $this->assertStringContainsString('Our slogan for today: We aim to please.', $output);
}