Add flexible http client

Author: joelwurtz

spec/HttpClientFlexibleSpec.php

@@ -0,0 +1,93 @@
+<?php
+
+namespace spec\Http\Client\Common;
+
+use Http\Client\Common\HttpAsyncClientDecorator;
+use Http\Client\Common\HttpClientDecorator;
+use Http\Client\Common\HttpClientFlexible;
+use Http\Client\HttpAsyncClient;
+use Http\Client\HttpClient;
+use PhpSpec\ObjectBehavior;
+
+class HttpClientFlexibleSpec extends ObjectBehavior
+{
+    function let(HttpClient $httpClient)
+    {
+        $this->beAnInstanceOf(
+            'spec\Http\Client\Common\HttpClientFlexibleStub', [
+                $httpClient
+            ]
+        );
+    }
+
+    function it_is_initializable()
+    {
+        $this->shouldHaveType('Http\Client\Common\HttpClientFlexible');
+    }
+
+    function it_is_an_http_client()
+    {
+        $this->shouldImplement('Http\Client\HttpClient');
+    }
+
+    function it_is_an_async_http_client()
+    {
+        $this->shouldImplement('Http\Client\HttpAsyncClient');
+    }
+
+    function it_throw_exception_if_invalid_client()
+    {
+        $httpClient = null;
+
+        $this->shouldThrow('\LogicException')->during('__construct', [$httpClient]);
+    }
+
+    function it_emulates_an_async_client(HttpClient $httpClient)
+    {
+        $this->beConstructedWith($httpClient);
+
+        $this->getClient()->shouldImplement('Http\Client\HttpClient');
+        $this->getAsyncClient()->shouldImplement('Http\Client\HttpAsyncClient');
+        $this->getAsyncClient()->shouldImplement('Http\Client\Common\EmulatedHttpAsyncClient');
+    }
+
+    function it_emulates_a_client(HttpAsyncClient $httpAsyncClient)
+    {
+        $this->beConstructedWith($httpAsyncClient);
+
+        $this->getClient()->shouldImplement('Http\Client\HttpClient');
+        $this->getAsyncClient()->shouldImplement('Http\Client\HttpAsyncClient');
+        $this->getClient()->shouldImplement('Http\Client\Common\EmulatedHttpClient');
+    }
+
+    function it_does_not_emulates_a_client(HttpClientFull $httpClient)
+    {
+        $this->beConstructedWith($httpClient);
+
+        $this->getClient()->shouldImplement('Http\Client\HttpClient');
+        $this->getAsyncClient()->shouldImplement('Http\Client\HttpAsyncClient');
+        $this->getClient()->shouldImplement('spec\Http\Client\Common\HttpClientFull');
+        $this->getAsyncClient()->shouldImplement('spec\Http\Client\Common\HttpClientFull');
+        $this->getClient()->shouldNotImplement('Http\Client\Common\EmulatedHttpClient');
+        $this->getAsyncClient()->shouldNotImplement('Http\Client\Common\EmulatedHttpAsyncClient');
+    }
+}
+
+class HttpClientFull implements HttpClient, HttpAsyncClient
+{
+    use HttpClientDecorator;
+    use HttpAsyncClientDecorator;
+}
+
+class HttpClientFlexibleStub extends HttpClientFlexible
+{
+    public function getClient()
+    {
+        return $this->httpClient;
+    }
+
+    public function getAsyncClient()
+    {
+        return $this->httpAsyncClient;
+    }
+}

src/HttpClientFlexible.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace Http\Client\Common;
+
+use Http\Client\HttpAsyncClient;
+use Http\Client\HttpClient;
+
+/**
+ * A flexible http client, which implements both interface and will emulate
+ * one contract, the other, or none at all depending on the injected client contract.
+ *
+ * @author Joel Wurtz <[email protected]>
+ */
+class HttpClientFlexible implements HttpClient, HttpAsyncClient
+{
+    use HttpClientDecorator;
+    use HttpAsyncClientDecorator;
+
+    /**
+     * @param HttpClient|HttpAsyncClient $client
+     */
+    public function __construct($client)
+    {
+        if (!($client instanceof HttpClient) && !($client instanceof HttpAsyncClient)) {
+            throw new \LogicException('Client must be an instance of Http\\Client\\HttpClient or Http\\Client\\HttpAsyncClient');
+        }
+
+        $this->httpAsyncClient = $client;
+        $this->httpClient = $client;
+
+        if (!($this->httpAsyncClient instanceof HttpAsyncClient)) {
+            $this->httpAsyncClient = new EmulatedHttpAsyncClient($this->httpAsyncClient);
+        }
+
+        if (!($this->httpClient instanceof HttpClient)) {
+            $this->httpClient = new EmulatedHttpClient($this->httpClient);
+        }
+    }
+}