public function WebAssertTest::testResponseHeaderExists in Drupal 9

Tests WebAssert::responseHeaderExists().

@covers ::responseHeaderExists

File

core/tests/Drupal/FunctionalTests/WebAssertTest.php, line 36

Class

WebAssertTest

Tests WebAssert functionality.

Namespace

Drupal\FunctionalTests

Code

public function testResponseHeaderExists() {
  $this
    ->drupalGet('test-null-header');
  $this
    ->assertSession()
    ->responseHeaderExists('Null-Header');
  $this
    ->expectException(AssertionFailedError::class);
  $this
    ->expectExceptionMessage("Failed asserting that the response has a 'does-not-exist' header.");
  $this
    ->assertSession()
    ->responseHeaderExists('does-not-exist');
}