IME for Mus: Add ui.mojom.CompositionText and its struct traits.

services/ui/public/interfaces/ime/ime_struct_traits_unittest.cc

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/message_loop/message_loop.h"
+#include "base/strings/utf_string_conversions.h"
+#include "mojo/public/cpp/bindings/binding_set.h"
+#include "services/ui/public/interfaces/ime/ime_struct_traits_test.mojom.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/base/ime/composition_text.h"
+#include "ui/base/ime/composition_underline.h"
+
+namespace ui {
+
+namespace {
+
+class IMEStructTraitsTest : public testing::Test,
+                            public mojom::IMEStructTraitsTest {
+ public:
+  IMEStructTraitsTest() {}
+
+ protected:
+  mojom::IMEStructTraitsTestPtr GetTraitsTestProxy() {
+    return traits_test_bindings_.CreateInterfacePtrAndBind(this);
+  }
+
+ private:
+  // mojom::IMEStructTraitsTest:
+  void EchoCompositionText(
+      const CompositionText& in,
+      const EchoCompositionTextCallback& callback) override {
+    callback.Run(in);
+  }
+
+  base::MessageLoop loop_;  // A MessageLoop is needed for Mojo IPC to work.
+  mojo::BindingSet<mojom::IMEStructTraitsTest> traits_test_bindings_;
+
+  DISALLOW_COPY_AND_ASSIGN(IMEStructTraitsTest);
+};
+
+}  // namespace
+
+TEST_F(IMEStructTraitsTest, CompositionText) {
+  CompositionText input;
+  input.text = base::UTF8ToUTF16("abcdefghij");
+  input.underlines.push_back(CompositionUnderline(0, 2, SK_ColorGRAY, false));
+  input.underlines.push_back(
+      CompositionUnderline(3, 6, SK_ColorRED, true, SK_ColorGREEN));
+  input.selection = gfx::Range(1, 7);
+
+  mojom::IMEStructTraitsTestPtr proxy = GetTraitsTestProxy();
+  CompositionText output;
+  proxy->EchoCompositionText(input, &output);
+
+  EXPECT_EQ(input, output);
+}
+
+}  // namespace ui