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DelegatingEngine example

    public function testRenderDelegatesToSupportedEngine()
    {
        $firstEngine = $this->getEngineMock('template.php', false);
        $secondEngine = $this->getEngineMock('template.php', true);

        $secondEngine->expects($this->once())
            ->method('render')
            ->with('template.php', ['foo' => 'bar'])
            ->willReturn('<html />');

        $delegatingEngine = new DelegatingEngine([$firstEngine, $secondEngine]);
        $result = $delegatingEngine->render('template.php', ['foo' => 'bar']);

        $this->assertSame('<html />', $result);
    }

    public function testRenderWithNoSupportedEngine()
    {
        $this->expectException(\RuntimeException::class);
        $this->expectExceptionMessage('No engine is able to work with the template "template.php"');
        $firstEngine = $this->getEngineMock('template.php', false);
        $secondEngine = $this->getEngineMock('template.php', false);