Port transform operations to C++ (#1020)

* port FieldMask to C++

* address changes

* address changes

* fix test

* address change

* Port transform operations (FSTTransformOperation, FSTServerTimestampTransform) to C++

* address changes

* address changes

* address changes

* address change

2 files changed, 52 insertions, 0 deletions

diff --git a/Firestore/core/test/firebase/firestore/model/CMakeLists.txt b/Firestore/core/test/firebase/firestore/model/CMakeLists.txt
index 59a1f03..5e494f1 100644
--- a/Firestore/core/test/firebase/firestore/model/CMakeLists.txt
+++ b/Firestore/core/test/firebase/firestore/model/CMakeLists.txt
@@ -25,6 +25,7 @@ cc_test(
     no_document_test.cc
     resource_path_test.cc
     snapshot_version_test.cc
+    transform_operations_test.cc
   DEPENDS
     firebase_firestore_model
 )
diff --git a/Firestore/core/test/firebase/firestore/model/transform_operations_test.cc b/Firestore/core/test/firebase/firestore/model/transform_operations_test.cc
new file mode 100644
index 0000000..0ef95db
--- /dev/null
+++ b/Firestore/core/test/firebase/firestore/model/transform_operations_test.cc
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/firebase/firestore/model/transform_operations.h"
+
+#include "gtest/gtest.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+class DummyOperation : public TransformOperation {
+ public:
+  DummyOperation() {
+  }
+
+  Type type() const override {
+    return Type::Test;
+  }
+
+  bool operator==(const TransformOperation& other) const override {
+    return this == &other;
+  }
+};
+
+TEST(TransformOperations, ServerTimestamp) {
+  ServerTimestampTransform transform = ServerTimestampTransform::Get();
+  EXPECT_EQ(TransformOperation::Type::ServerTimestamp, transform.type());
+
+  ServerTimestampTransform another = ServerTimestampTransform::Get();
+  DummyOperation dummy;
+  EXPECT_EQ(transform, another);
+  EXPECT_NE(transform, dummy);
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase