public function testGetsGaxConfig()
{
$fetcher = $this->prophesize(FetchAuthTokenInterface::class)->reveal();
$this->requestWrapper->getCredentialsFetcher()->willReturn($fetcher);
$this->implementation->setRequestWrapper($this->requestWrapper->reveal());
$expected = ['credentialsLoader' => $fetcher, 'enableCaching' => false, 'appName' => 'gcloud-php', 'appVersion' => ServiceBuilder::VERSION];
$this->assertEquals($expected, $this->implementation->call('getGaxConfig'));
}