public function BrowserTestBaseTest::testVarDump in Drupal 9

Tests the dump() function provided by the var-dumper Symfony component.

File

core/tests/Drupal/FunctionalTests/BrowserTestBaseTest.php, line 974

Class

BrowserTestBaseTest

Tests BrowserTestBase functionality.

Namespace

Drupal\FunctionalTests

Code

public function testVarDump() {

  // Append the stream capturer to the STDOUT stream, so that we can test the
  // dump() output and also prevent it from actually outputting in this
  // particular test.
  stream_filter_register("capture", StreamCapturer::class);
  stream_filter_append(STDOUT, "capture");

  // Dump some variables to check that dump() in test code produces output
  // on the command line that is running the test.
  $role = Role::load('authenticated');
  dump($role);
  dump($role
    ->id());
  $this
    ->assertStringContainsString('Drupal\\user\\Entity\\Role', StreamCapturer::$cache);
  $this
    ->assertStringContainsString('authenticated', StreamCapturer::$cache);

  // Visit a Drupal page with call to the dump() function to check that dump()
  // in site code produces output in the requested web page's HTML.
  $body = $this
    ->drupalGet('test-page-var-dump');
  $this
    ->assertSession()
    ->statusCodeEquals(200);

  // It is too strict to assert all properties of the Role and it is easy to
  // break if one of these properties gets removed or gets a new default
  // value. It should be sufficient to test just a couple of properties.
  $this
    ->assertStringContainsString('<span class=sf-dump-note>', $body);
  $this
    ->assertStringContainsString('  #<span class=sf-dump-protected title="Protected property">id</span>: "<span class=sf-dump-str title="9 characters">test_role</span>"', $body);
  $this
    ->assertStringContainsString('  #<span class=sf-dump-protected title="Protected property">label</span>: <span class=sf-dump-const>null</span>', $body);
  $this
    ->assertStringContainsString('  #<span class=sf-dump-protected title="Protected property">permissions</span>: []', $body);
  $this
    ->assertStringContainsString('  #<span class=sf-dump-protected title="Protected property">uuid</span>: "', $body);
  $this
    ->assertStringContainsString('</samp>}', $body);
}