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LazyHttpKernelTest.php
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<?php
namespace Stack;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\HttpKernelInterface;
class LazyHttpKernelTest extends \PHPUnit_Framework_TestCase
{
/** @test */
public function handleShouldInvokeFactory()
{
$factory = function () {
return $this->createHelloKernel();
};
$kernel = new LazyHttpKernel($factory);
$request = Request::create('/');
$response = $kernel->handle($request);
$this->assertEquals(new Response('Hello World!'), $response);
}
/** @test */
public function handleShouldInvokeFactoryJustOnce()
{
$factoryCalled = 0;
$factory = function () use (&$factoryCalled) {
$factoryCalled++;
return $this->createHelloKernel();
};
$kernel = new LazyHttpKernel($factory);
$request = Request::create('/');
$response = $kernel->handle($request);
$this->assertSame(1, $factoryCalled);
}
/** @test */
public function handleShouldReuseCreatedApp()
{
$factoryCalled = 0;
$factory = function () use (&$factoryCalled) {
$factoryCalled++;
return $this->createHelloKernel();
};
$kernel = new LazyHttpKernel($factory);
$request = Request::create('/');
$response = $kernel->handle($request);
$response = $kernel->handle($request);
$this->assertSame(1, $factoryCalled);
}
public function testWithUrlMap()
{
$fooFactoryCalled = 0;
$barFactoryCalled = 0;
$foo = new LazyHttpKernel(function () use (&$fooFactoryCalled) {
$fooFactoryCalled++;
return $this->createKernel('foo');
});
$bar = new LazyHttpKernel(function () use (&$barFactoryCalled) {
$barFactoryCalled++;
return $this->createKernel('bar');
});
$app = $this->createHelloKernel();
$kernel = new UrlMap($app, [
'/foo' => $foo,
'/bar' => $bar,
]);
$request = Request::create('/foo');
$response = $kernel->handle($request);
$this->assertSame(1, $fooFactoryCalled);
$this->assertSame(0, $barFactoryCalled);
}
public function testShortcutFunction()
{
$kernel = lazy(function () {
return $this->createHelloKernel();
});
$this->assertInstanceOf('Stack\LazyHttpKernel', $kernel);
$this->assertSame('Hello World!', $kernel->handle(Request::create('/'))->getContent());
}
private function createHelloKernel()
{
return $this->createKernel('Hello World!');
}
private function createKernel($body)
{
return new CallableHttpKernel(function (Request $request) use ($body) {
return new Response($body);
});
}
}