[Android WebView] AwMediaUrlInterceptor to handle media assets.

android_webview/native/aw_media_url_interceptor_unittest.cc

+// Copyright 2014 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 <string>
+
+#include "android_webview/native/aw_media_url_interceptor.h"
+#include "base/memory/scoped_ptr.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+using testing::Test;
+
+namespace android_webview {
+
+namespace {
+
+// Sentinel value to check whether the fields have been set.
+const int UNSET_VALUE = -1;
+
+class AwMediaUrlInterceptorTest : public Test {
+ public:
+   AwMediaUrlInterceptorTest()
+       : fd_(UNSET_VALUE), offset_(UNSET_VALUE), size_(UNSET_VALUE),

[mnaganov (inactive), 2014/07/25 08:28:54]

It is preferred to initialize / dispose test variables in overridden 'SetUp' and
'TearDown' methods. Otherwise you are potentially adding dependencies between
tests (that is, running one test can affect results of subsequent tests).

[Ignacio Solla, 2014/07/25 11:05:48]

The tests are still isolated when using the constructor, and it is actually
preferred in this case:

https://code.google.com/p/googletest/wiki/FAQ#Should_I_use_the_constructor/de...

+         url_interceptor_(new AwMediaUrlInterceptor()){
+   }
+ protected:
+   int fd_;
+   int64 offset_;
+   int64 size_;
+   scoped_ptr<AwMediaUrlInterceptor> url_interceptor_;
+};
+
+}  // namespace
+
+TEST_F(AwMediaUrlInterceptorTest, TestInterceptValidAssetUrl) {
+  // This asset file exists in the android_webview_unittests-debug.apk.
+  // See gyp rule android_webview_unittests_apk.
+  const std::string valid_asset_url(
+      "file:///android_asset/asset_file.ogg");
+
+  ASSERT_TRUE(url_interceptor_->Intercept(
+      valid_asset_url, &fd_, &offset_, &size_));
+  EXPECT_NE(UNSET_VALUE, fd_);
+  EXPECT_NE(UNSET_VALUE, offset_);
+  EXPECT_NE(UNSET_VALUE, size_);
+}
+
+TEST_F(AwMediaUrlInterceptorTest, TestInterceptInvalidAssetUrl) {
+  // This asset file does not exist in the android_webview_unittests-debug.apk.
+  // See gyp rule android_webview_unittests_apk.
+  const std::string invalid_asset_url(
+      "file:///android_asset/file_does_not_exist.ogg");
+
+  ASSERT_FALSE(url_interceptor_->Intercept(
+      invalid_asset_url, &fd_, &offset_, &size_));
+  EXPECT_EQ(UNSET_VALUE, fd_);
+  EXPECT_EQ(UNSET_VALUE, offset_);
+  EXPECT_EQ(UNSET_VALUE, size_);
+}
+
+TEST_F(AwMediaUrlInterceptorTest, TestInterceptNonAssetUrl) {
+  // This url does not refer to an asset in the apk.
+  const std::string non_asset_url("file:///sdcard/file.txt");
+
+  ASSERT_FALSE(url_interceptor_->Intercept(
+      non_asset_url, &fd_, &offset_, &size_));
+  EXPECT_EQ(UNSET_VALUE, fd_);
+  EXPECT_EQ(UNSET_VALUE, offset_);
+  EXPECT_EQ(UNSET_VALUE, size_);
+}
+
+}  // namespace android_webview