memory leak test for php

src/php/bin/run_tests.sh

@@ -22,9 +22,19 @@ cd src/php/bin
 source ./determine_extension_dir.sh
 # in some jenkins macos machine, somehow the PHP build script can't find libgrpc.dylib
 export DYLD_LIBRARY_PATH=$root/libs/$CONFIG
+
 php $extension_dir -d max_execution_time=300 $(which phpunit) -v --debug \
   --exclude-group persistent_list_bound_tests ../tests/unit_tests
 
 php $extension_dir -d max_execution_time=300 $(which phpunit) -v --debug \
   ../tests/unit_tests/PersistentChannelTests
 
+export ZEND_DONT_UNLOAD_MODULES=1
+export USE_ZEND_ALLOC=0
+# Detect whether valgrind is executable
+if ! [ -x "$(command -v valgrind)" ]; then
+  echo 'Error: valgrind is not installed and is not executable' >&2
+  exit 1
+fi
+valgrind --error-exitcode=10 --leak-check=yes php $extension_dir -d max_execution_time=300 \
+	../tests/MemoryLeakTest/MemoryLeakTest.php

src/php/tests/unit_tests/CallTest.php

@@ -86,6 +86,26 @@ class CallTest extends PHPUnit_Framework_TestCase
         $this->assertTrue($result->send_metadata);
     }
 
+    public function testAddMultiAndMultiValueMetadata()
+    {
+        $batch = [
+            Grpc\OP_SEND_INITIAL_METADATA => ['key1' => ['value1', 'value2'],
+                                              'key2' => ['value3', 'value4'],],
+        ];
+        $result = $this->call->startBatch($batch);
+        $this->assertTrue($result->send_metadata);
+    }
+
+    public function testAddMultiAndMultiValueMetadata()
+    {
+        $batch = [
+            Grpc\OP_SEND_INITIAL_METADATA => ['key1' => ['value1', 'value2'],
+                                              'key2' => ['value3', 'value4'],],
+        ];
+        $result = $this->call->startBatch($batch);
+        $this->assertTrue($result->send_metadata);
+    }
+
     public function testGetPeer()
     {
         $this->assertTrue(is_string($this->call->getPeer()));