Initial test for redirection handling

lib/HttpClient/HttpClient.php

@@ -54,8 +54,8 @@ class HttpClient implements RequestFactoryInterface, ClientInterface {
                         $request = $request->withUri($url);
                         if ($code === 303 && !in_array($request->getMethod(), ["GET", "HEAD"])) {
                             $request = $request->withMethod("GET");
-                            continue 2;
                         }
+                        continue 2;
                     }
                 }
                 return $response;

tests/cases/HttpClientTest.php

@@ -6,14 +6,20 @@
 declare(strict_types=1);
 namespace MensBeam\Lax\TestCase;
 
+use MensBeam\Lax\Url;
+use MensBeam\Lax\HttpClient\HttpClient;
 use MensBeam\Lax\HttpClient\Exception;
+use \Psr\Http\Message\RequestInterface;
+use \Psr\Http\Message\ResponseInterface;
+use \Psr\Http\Message\RequestFactoryInterface;
+use \Psr\Http\Client\ClientInterface;
 
-/** 
+/** @covers MensBeam\Lax\HttpClient\HttpClient */
- * @covers MensBeam\Lax\HttpClient\HttpClient
- * @covers MensBeam\Lax\HttpClient\Exception
- */
 class ParserTest extends \PHPUnit\Framework\TestCase {
-    /** @dataProvider provideCodes */
+    /** 
+     * @dataProvider provideCodes 
+     * @covers MensBeam\Lax\HttpClient\Exception
+    */
     public function testCreateExceptions(string $symbol, int $exp): void {
         $exp = new Exception("httpStatus".$exp);
         $act = new Exception($symbol);
@@ -58,4 +64,55 @@ class ParserTest extends \PHPUnit\Framework\TestCase {
         }
         yield "httpStatus000401" => ["httpStatus000401", 401];
     }
+
+    /** @dataProvider provideRedirections */
+    public function testHandleRedirections(array $responses, int $max, ?\Throwable $exc): void {
+        assert(sizeof($responses) > 0, "Test must have at least one response");
+        $client = \Phake::mock(ClientInterface::class);
+        $factory = \Phake::mock(RequestFactoryInterface::class);
+        $req = \Phake::mock(RequestInterface::class);
+        $res = \Phake::mock(ResponseInterface::class);
+        $c = new HttpClient($client, $factory);
+        $c->maxRedirects = $max;
+        \Phake::when($client)->sendRequest->thenReturn($res);
+        \Phake::when($factory)->createRequest->thenReturn($req);
+        \Phake::when($req)->withUri->thenReturn($req);
+        $mockCode = \Phake::when($res)->getStatusCode;
+        $mockLoc = \Phake::when($res)->getHeader("Location");
+        $mockUrl = \Phake::when($req)->getUri;
+        foreach ($responses as $url => [$code, $loc]) {
+            $mockUrl->thenReturn(new Url($url));
+            $mockCode = $mockCode->thenReturn($code);
+            $mockLoc = $mockLoc->thenReturn((array) $loc);
+        }
+        try {
+            if ($exc) {
+                $this->expectExceptionObject($exc);
+                $c->sendRequest($req);
+            } else {
+                $this->assertSame($res, $c->sendRequest($req));    
+            }
+        } finally {
+            $redir = -1;
+            foreach ($responses as $url => [$code, $loc]) {
+                if  ($redir++ >= $max) {
+                    break;
+                }
+                \Phake::verify($client)->sendRequest($this->identicalTo($req));
+            }
+        }
+    }
+
+    public function provideRedirections(): iterable {
+        $err = new Exception("tooManyRedirects");
+        return [
+            [[
+                'http://example.com/' => [200, null],
+            ], 0, null],
+            [[
+                'http://example.com/'           => [302, "/index.html"],
+                'http://example.com/index.html' => [200, null],
+            ], 0, $err],
+        ];
+    }
 }