Test local tasks with route placeholders.
public function testHookMenuIntegration() {
// Generate base path with random argument.
$base_path = 'foo/' . $this
->randomName(8);
$this
->drupalGet($base_path);
// Confirm correct controller activated.
$this
->assertText('test1');
// Confirm local task links are displayed.
$this
->assertLink('Local task A');
$this
->assertLink('Local task B');
// Confirm correct local task href.
$this
->assertLinkByHref(url($base_path));
$this
->assertLinkByHref(url($base_path . '/b'));
}