Merge branch 'hotfix/400'

Close #402
Close #401
Fixes #400

CHANGELOG.md

@@ -2,6 +2,28 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
+## 1.0.4 - 2016-12-07
+
+### Added
+
+- Nothing.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- [#402](https://github.com/zendframework/zend-expressive/pull/402) fixes how
+  `Application::__invoke()` registers the error handler designed to swallow
+  deprecation notices, as introduced in 1.0.3. It now checks to see if another
+  error handler was previously registered, and, if so, creates a composite
+  handler that will delegate to the previous for all other errors.
+
 ## 1.0.3 - 2016-11-11
 
 ### Added

src/Application.php

@@ -129,19 +129,16 @@ public function __construct(
      *
      * If $out is not provided, uses the result of `getFinalHandler()`.
      *
-     * @todo Remove logic for creating final handler for version 2.0.
-     * @todo Remove error handler for deprecation notice due to triggering
-     *     error middleware for version 2.0.0.
+     * @todo Remove logic for creating final handler for version 2.0.0.
+     * @todo Remove swallowDeprecationNotices() invocation for version 2.0.0.
      * @param ServerRequestInterface $request
      * @param ResponseInterface $response
      * @param callable|null $out
      * @return ResponseInterface
      */
     public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $out = null)
     {
-        set_error_handler(function ($errno, $errstr) {
-            return false !== strstr($errstr, 'error middleware is deprecated');
-        }, E_USER_DEPRECATED);
+        $this->swallowDeprecationNotices();
 
         if (! $out && (null === ($out = $this->getFinalHandler($response)))) {
             $response = $response instanceof StratigilityResponse
@@ -671,4 +668,33 @@ private function checkForDuplicateRoute($path, $methods = null)
             );
         }
     }
+
+    /**
+     * Register an error handler to swallow deprecation notices due to error middleware usage.
+     *
+     * @todo Remove method for version 2.0.0.
+     * @return void
+     */
+    private function swallowDeprecationNotices()
+    {
+        $handler = function ($errno, $errstr) {
+            if ($errno !== E_USER_DEPRECATED) {
+                return false;
+            }
+            return false !== strstr($errstr, 'error middleware is deprecated');
+        };
+
+        $previous = set_error_handler($handler);
+        if (! $previous) {
+            return;
+        }
+
+        set_error_handler(function ($errno, $errstr, $errfile, $errline, $errcontext) use ($handler, $previous) {
+            if ($handler($errno, $errstr)) {
+                return true;
+            }
+
+            return $previous($errno, $errstr, $errfile, $errline, $errcontext);
+        });
+    }
 }

test/IntegrationTest.php

@@ -21,11 +21,21 @@
 
 class IntegrationTest extends TestCase
 {
+    public $errorHandler;
     public $response;
 
     public function setUp()
     {
         $this->response = null;
+        $this->errorHandler = null;
+    }
+
+    public function tearDown()
+    {
+        if ($this->errorHandler) {
+            set_error_handler($this->errorHandler);
+            $this->errorHandler = null;
+        }
     }
 
     public function getEmitter()
@@ -67,4 +77,33 @@ public function testInjectedFinalHandlerCanEmitA404WhenNoMiddlewareMatches()
         $this->assertInstanceOf(ResponseInterface::class, $this->response);
         $this->assertEquals(404, $this->response->getStatusCode());
     }
+
+    /**
+     * @todo Remove for version 2.0, as that version will remove error middleware support
+     * @group 400
+     */
+    public function testErrorMiddlewareDeprecationErrorHandlerWillNotOverridePreviouslyRegisteredErrorHandler()
+    {
+        $triggered = false;
+        $this->errorHandler = set_error_handler(function ($errno, $errstr) use (&$triggered) {
+            $triggered = true;
+            return true;
+        });
+
+        $expected = new Response();
+        $middleware = function ($request, $response, $next) use ($expected) {
+            trigger_error('Triggered', E_USER_NOTICE);
+            return $expected;
+        };
+
+        $app      = new Application(new FastRouteRouter(), null, null, $this->getEmitter());
+        $app->pipe($middleware);
+
+        $request  = new ServerRequest([], [], 'https://example.com/foo', 'GET');
+        $response = clone $expected;
+
+        $app->run($request, $response);
+
+        $this->assertTrue($triggered);
+    }
 }