function WebAssertTest::testPageContainsNoDuplicateId

Tests pageContainsNoDuplicateId() functionality.

@covers ::pageContainsNoDuplicateId

File

core/tests/Drupal/Tests/Core/Test/WebAssertTest.php, line 401

Class

WebAssertTest
Tests WebAssert functionality.

Namespace

Drupal\Tests\Core\Test

Code

public function testPageContainsNoDuplicateId() : void {
  $this->visit('', <<<HTML
        <h1 id="page-element-title">Hello</h1>
        <h2 id="page-element-description">World</h2>
  HTML);
  $assert_session = $this->assertSession();
  $assert_session->pageContainsNoDuplicateId();
  $this->visit('', <<<HTML
        <h1 id="page-element">Hello</h1>
        <h2 id="page-element">World</h2>
  HTML);
  $this->expectException(ExpectationException::class);
  $this->expectExceptionMessage('The page contains a duplicate HTML ID "page-element".');
  $assert_session->pageContainsNoDuplicateId();
}

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