bug symfony#16642 [DI][autowiring] throw exception when many services use the same class. (aitboudad)

This PR was merged into the 2.8 branch.

Discussion
----------

[DI][autowiring] throw exception when many services use the same class.

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Fixed tickets  | symfony#16639
| Tests pass?   | yes
| License       | MIT

Commits
-------

a21a016 [DI][autowiring] throw exception when many services use the same class.

Author: fabpot

src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php

@@ -227,7 +227,7 @@ private function set($type, $id)
      */
     private function createAutowiredDefinition(\ReflectionClass $typeHint, $id)
     {
-        if (!$typeHint->isInstantiable()) {
+        if (isset($this->notGuessableTypes[$typeHint->name]) || !$typeHint->isInstantiable()) {
             throw new RuntimeException(sprintf('Unable to autowire argument of type "%s" for the service "%s".', $typeHint->name, $id));
         }
 

src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php

@@ -117,6 +117,56 @@ public function testTypeCollision()
         $pass->process($container);
     }
 
+    /**
+     * @expectedException \Symfony\Component\DependencyInjection\Exception\RuntimeException
+     * @expectedExceptionMessage Unable to autowire argument of type "Symfony\Component\DependencyInjection\Tests\Compiler\Foo" for the service "a".
+     */
+    public function testTypeNotGuessable()
+    {
+        $container = new ContainerBuilder();
+
+        $container->register('a1', __NAMESPACE__.'\Foo');
+        $container->register('a2', __NAMESPACE__.'\Foo');
+        $aDefinition = $container->register('a', __NAMESPACE__.'\NotGuessableArgument');
+        $aDefinition->setAutowired(true);
+
+        $pass = new AutowirePass();
+        $pass->process($container);
+    }
+
+    /**
+     * @expectedException \Symfony\Component\DependencyInjection\Exception\RuntimeException
+     * @expectedExceptionMessage Unable to autowire argument of type "Symfony\Component\DependencyInjection\Tests\Compiler\A" for the service "a".
+     */
+    public function testTypeNotGuessableWithSubclass()
+    {
+        $container = new ContainerBuilder();
+
+        $container->register('a1', __NAMESPACE__.'\B');
+        $container->register('a2', __NAMESPACE__.'\B');
+        $aDefinition = $container->register('a', __NAMESPACE__.'\NotGuessableArgumentForSubclass');
+        $aDefinition->setAutowired(true);
+
+        $pass = new AutowirePass();
+        $pass->process($container);
+    }
+
+    public function testTypeNotGuessableWithTypeSet()
+    {
+        $container = new ContainerBuilder();
+
+        $container->register('a1', __NAMESPACE__.'\Foo');
+        $container->register('a2', __NAMESPACE__.'\Foo')->addAutowiringType(__NAMESPACE__.'\Foo');
+        $aDefinition = $container->register('a', __NAMESPACE__.'\NotGuessableArgument');
+        $aDefinition->setAutowired(true);
+
+        $pass = new AutowirePass();
+        $pass->process($container);
+
+        $this->assertCount(1, $container->getDefinition('a')->getArguments());
+        $this->assertEquals('a2', (string) $container->getDefinition('a')->getArgument(0));
+    }
+
     public function testWithTypeSet()
     {
         $container = new ContainerBuilder();
@@ -335,3 +385,15 @@ public function __construct(Dunglas $k, NotARealClass $r)
     {
     }
 }
+class NotGuessableArgument
+{
+    public function __construct(Foo $k)
+    {
+    }
+}
+class NotGuessableArgumentForSubclass
+{
+    public function __construct(A $k)
+    {
+    }
+}