[ScreenOrientation] Merge ScreenOrientation into ScreenOrientationProvider.

content/browser/screen_orientation/screen_orientation_provider_unittest.cc

+// Copyright 2017 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 "content/public/browser/screen_orientation_provider.h"
+
+#include "base/optional.h"
+#include "base/run_loop.h"
+#include "content/public/browser/screen_orientation_delegate.h"
+#include "content/test/test_render_view_host.h"
+#include "content/test/test_web_contents.h"
+#include "third_party/WebKit/public/platform/modules/screen_orientation/WebScreenOrientationLockType.h"
+
+namespace content {

[leonhsl(Using Gerrit), 2017/01/23 10:11:10]

Currently this file is just to show a sketch, if the sketch is OK I'll try to
add more tests for various scenarios.

+
+using device::mojom::ScreenOrientationLockResult;
+
+namespace {
+
+void LockResultCallback(base::Optional<ScreenOrientationLockResult>* out_result,
+                        ScreenOrientationLockResult result) {
+  *out_result = result;
+}
+}
+
+class ScreenOrientationProviderTest : public RenderViewHostImplTestHarness {
+ public:
+  ScreenOrientationProviderTest() {}
+
+  void SetUp() override { content::RenderViewHostImplTestHarness::SetUp(); }
+
+  void TearDown() override {
+    content::RenderViewHostImplTestHarness::TearDown();
+  }
+
+  // Helpers for testing ScreenOrientationProvider methods.
+  void CallLockOrientation(
+      blink::WebScreenOrientationLockType orientation,
+      const ScreenOrientationProvider::LockOrientationCallback& callback) {
+    contents()->GetScreenOrientationProvider()->LockOrientation(orientation,
+                                                                callback);
+  }
+
+  void CallUnlockOrientation() {
+    contents()->GetScreenOrientationProvider()->UnlockOrientation();
+  }
+};
+
+// No ScreenOrientationDelegate.
+TEST_F(ScreenOrientationProviderTest, NoDelegateLockOnce) {
+  base::Optional<ScreenOrientationLockResult> result;
+  CallLockOrientation(blink::WebScreenOrientationLockType::
+                          WebScreenOrientationLockPortraitPrimary,
+                      base::Bind(&LockResultCallback, &result));
+
+  base::RunLoop().RunUntilIdle();
+  EXPECT_EQ(ScreenOrientationLockResult::
+                SCREEN_ORIENTATION_LOCK_RESULT_ERROR_NOT_AVAILABLE,
+            *result);
+}
+
+// Sync ScreenOrientationDelegate, simulate on Windows and ChromeOS.
+TEST_F(ScreenOrientationProviderTest, SyncDelegateLockOnce) {}
+
+// Async ScreenOrientationDelegate, simulate on Android.
+TEST_F(ScreenOrientationProviderTest, AsyncDelegateLockOnce) {}
+
+// Sync ScreenOrientationDelegate, simulate on Windows and ChromeOS.
+TEST_F(ScreenOrientationProviderTest, SyncDelegateLockTwice) {}
+
+// Async ScreenOrientationDelegate, simulate on Android.
+TEST_F(ScreenOrientationProviderTest, AsyncDelegateLockTwice) {}
+
+}  // namespace content