Add new file option php_namespace. (#3162)

* Add new file option php_namespace.

Use this option to change the namespace of php generated classes.
Default is empty. When this option is empty, the package name will be
used for determining the namespace.

* Uncomment commented tests

* Revert gdb test change

* Update csharp descriptor.

* Add test for empty php_namespace.

1 files changed, 21 insertions, 0 deletions

diff --git a/php/tests/generated_class_test.php b/php/tests/generated_class_test.php
index be641b6e..f7e645b3 100644
--- a/php/tests/generated_class_test.php
+++ b/php/tests/generated_class_test.php
@@ -9,9 +9,11 @@ use Google\Protobuf\Internal\RepeatedField;
 use Google\Protobuf\Internal\MapField;
 use Google\Protobuf\Internal\GPBType;
 use Foo\TestEnum;
+use Foo\TestIncludeNamespaceMessage;
 use Foo\TestIncludePrefixMessage;
 use Foo\TestMessage;
 use Foo\TestMessage_Sub;
+use Php\Test\TestNamespace;
 
 class GeneratedClassTest extends TestBase
 {
@@ -868,6 +870,25 @@ class GeneratedClassTest extends TestBase
     }
 
     #########################################################
+    # Test message with given namespace.
+    #########################################################
+
+    public function testNamespaceMessage()
+    {
+        $m = new TestIncludeNamespaceMessage();
+
+        $n = new TestNamespace();
+        $n->setA(1);
+        $m->setNamespaceMessage($n);
+        $this->assertSame(1, $m->getNamespaceMessage()->getA());
+
+        $n = new TestEmptyNamespace();
+        $n->setA(1);
+        $m->setEmptyNamespaceMessage($n);
+        $this->assertSame(1, $m->getEmptyNamespaceMessage()->getA());
+    }
+
+    #########################################################
     # Test prefix for reserved words.
     #########################################################