Merge branch '4.2' into 4.3

* 4.2:
  [Routing] Fixed unexpected 404 NoConfigurationException
  [DI] Removes number of elements information in debug mode
  [Contracts] Simplify implementation declarations
  Update PR template for 4.3
  [Intl] Add FallbackTrait for data generation
  [Console] Commands with an alias should not be recognized as ambiguous
  clarify the possible class/interface of the cache

Author: nicolas-grekas

Matcher/Dumper/CompiledUrlMatcherTrait.php

@@ -42,7 +42,7 @@ public function match($pathinfo)
             throw new MethodNotAllowedException(array_keys($allow));
         }
         if (!$this instanceof RedirectableUrlMatcherInterface) {
-            throw new ResourceNotFoundException();
+            throw new ResourceNotFoundException(sprintf('No routes found for "%s".', $pathinfo));
         }
         if (!\in_array($this->context->getMethod(), ['HEAD', 'GET'], true)) {
             // no-op
@@ -67,7 +67,7 @@ public function match($pathinfo)
             }
         }
 
-        throw new ResourceNotFoundException();
+        throw new ResourceNotFoundException(sprintf('No routes found for "%s".', $pathinfo));
     }
 
     private function doMatch(string $pathinfo, array &$allow = [], array &$allowSchemes = []): array
@@ -110,10 +110,8 @@ private function doMatch(string $pathinfo, array &$allow = [], array &$allowSche
             }
 
             $hasRequiredScheme = !$requiredSchemes || isset($requiredSchemes[$context->getScheme()]);
-            if ($requiredMethods && !isset($requiredMethods[$canonicalMethod]) && !isset($requiredMethods[$requestMethod])) {
-                if ($hasRequiredScheme) {
-                    $allow += $requiredMethods;
-                }
+            if ($hasRequiredScheme && $requiredMethods && !isset($requiredMethods[$canonicalMethod]) && !isset($requiredMethods[$requestMethod])) {
+                $allow += $requiredMethods;
                 continue;
             }
 
@@ -162,15 +160,13 @@ private function doMatch(string $pathinfo, array &$allow = [], array &$allowSche
                         }
                     }
 
-                    $hasRequiredScheme = !$requiredSchemes || isset($requiredSchemes[$context->getScheme()]);
-                    if ($requiredMethods && !isset($requiredMethods[$canonicalMethod]) && !isset($requiredMethods[$requestMethod])) {
-                        if ($hasRequiredScheme) {
-                            $allow += $requiredMethods;
-                        }
+                    if ($requiredSchemes && !isset($requiredSchemes[$context->getScheme()])) {
+                        $allowSchemes += $requiredSchemes;
                         continue;
                     }
-                    if (!$hasRequiredScheme) {
-                        $allowSchemes += $requiredSchemes;
+
+                    if ($requiredMethods && !isset($requiredMethods[$canonicalMethod]) && !isset($requiredMethods[$requestMethod])) {
+                        $allow += $requiredMethods;
                         continue;
                     }
 

Matcher/UrlMatcher.php

@@ -89,7 +89,7 @@ public function match($pathinfo)
             return $ret;
         }
 
-        if ('/' === $pathinfo && !$this->allow) {
+        if ('/' === $pathinfo && !$this->allow && !$this->allowSchemes) {
             throw new NoConfigurationException();
         }
 
@@ -182,24 +182,16 @@ protected function matchCollection($pathinfo, RouteCollection $routes)
                 if ($supportsTrailingSlash && (!$requiredMethods || \in_array('GET', $requiredMethods))) {
                     return $this->allow = $this->allowSchemes = [];
                 }
-
                 continue;
             }
 
-            $hasRequiredScheme = !$route->getSchemes() || $route->hasScheme($this->context->getScheme());
-            if ($requiredMethods) {
-                if (!\in_array($method, $requiredMethods)) {
-                    if ($hasRequiredScheme) {
-                        $this->allow = array_merge($this->allow, $requiredMethods);
-                    }
-
-                    continue;
-                }
-            }
-
-            if (!$hasRequiredScheme) {
+            if ($route->getSchemes() && !$route->hasScheme($this->context->getScheme())) {
                 $this->allowSchemes = array_merge($this->allowSchemes, $route->getSchemes());
+                continue;
+            }
 
+            if ($requiredMethods && !\in_array($method, $requiredMethods)) {
+                $this->allow = array_merge($this->allow, $requiredMethods);
                 continue;
             }
 

Tests/Matcher/UrlMatcherTest.php

@@ -747,6 +747,7 @@ public function testNestedCollections()
 
     /**
      * @expectedException \Symfony\Component\Routing\Exception\ResourceNotFoundException
+     * @expectedExceptionMessage No routes found for "/".
      */
     public function testSchemeAndMethodMismatch()
     {