port FieldMask to C++ (#998)

* port FieldMask to C++

* address changes

* address changes

* fix test

* address change

* fix lint

* address changes

* Revert "address changes"

This reverts commit c75bb42851b785ab0838bb23679f87dfad9df4bb.

2 files changed, 57 insertions, 0 deletions

diff --git a/Firestore/core/test/firebase/firestore/model/CMakeLists.txt b/Firestore/core/test/firebase/firestore/model/CMakeLists.txt
index 2c2281f..59a1f03 100644
--- a/Firestore/core/test/firebase/firestore/model/CMakeLists.txt
+++ b/Firestore/core/test/firebase/firestore/model/CMakeLists.txt
@@ -18,6 +18,7 @@ cc_test(
     database_id_test.cc
     document_key_test.cc
     document_test.cc
+    field_mask_test.cc
     field_path_test.cc
     field_value_test.cc
     maybe_document_test.cc
diff --git a/Firestore/core/test/firebase/firestore/model/field_mask_test.cc b/Firestore/core/test/firebase/firestore/model/field_mask_test.cc
new file mode 100644
index 0000000..52d5951
--- /dev/null
+++ b/Firestore/core/test/firebase/firestore/model/field_mask_test.cc
@@ -0,0 +1,56 @@
+/*
+ * 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/field_mask.h"
+
+#include <vector>
+
+#include "Firestore/core/src/firebase/firestore/model/field_path.h"
+#include "gtest/gtest.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+TEST(FieldMask, ConstructorAndEqual) {
+  FieldMask mask_a{FieldPath::FromServerFormat("foo"),
+                   FieldPath::FromServerFormat("bar")};
+  std::vector<FieldPath> field_path_vector{FieldPath::FromServerFormat("foo"),
+                                           FieldPath::FromServerFormat("bar")};
+  FieldMask mask_b{field_path_vector};
+  FieldMask mask_c{std::vector<FieldPath>{FieldPath::FromServerFormat("foo"),
+                                          FieldPath::FromServerFormat("bar")}};
+  EXPECT_EQ(mask_a, mask_b);
+  EXPECT_EQ(mask_b, mask_c);
+}
+
+TEST(FieldMask, Getter) {
+  FieldMask mask{FieldPath::FromServerFormat("foo"),
+                 FieldPath::FromServerFormat("bar")};
+  EXPECT_EQ(std::vector<FieldPath>({FieldPath::FromServerFormat("foo"),
+                                    FieldPath::FromServerFormat("bar")}),
+            std::vector<FieldPath>(mask.begin(), mask.end()));
+}
+
+TEST(FieldMask, ToString) {
+  FieldMask mask{FieldPath::FromServerFormat("foo"),
+                 FieldPath::FromServerFormat("bar")};
+  EXPECT_EQ("{ foo bar }", mask.ToString());
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase