Rename isolated_output to test_output and add a method to get the test_output directory.

webrtc/test/testsupport/isolated_output_unittest.cc

-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#include "webrtc/test/testsupport/isolated_output.h"
-
-#include <string.h>
-
-#include <string>
-
-#include "gflags/gflags.h"
-#include "webrtc/rtc_base/file.h"
-#include "webrtc/rtc_base/pathutils.h"
-#include "webrtc/rtc_base/platform_file.h"
-#include "webrtc/test/gtest.h"
-
-DECLARE_string(isolated_out_dir);
-
-namespace webrtc {
-namespace test {
-
-TEST(IsolatedOutputTest, ShouldRejectInvalidIsolatedOutDir) {
-  std::string backup = FLAGS_isolated_out_dir;
-  FLAGS_isolated_out_dir = "";
-  ASSERT_FALSE(WriteIsolatedOutput("a-file", "some-contents"));
-  FLAGS_isolated_out_dir = backup;
-}
-
-TEST(IsolatedOutputTest, ShouldRejectInvalidFileName) {
-  ASSERT_FALSE(WriteIsolatedOutput(nullptr, "some-contents"));
-  ASSERT_FALSE(WriteIsolatedOutput("", "some-contents"));
-}
-
-// Sets isolated_out_dir=<a-writable-path> to execute this test.
-TEST(IsolatedOutputTest, ShouldBeAbleToWriteContent) {
-  const char* filename = "a-file";
-  const char* content = "some-contents";
-  if (WriteIsolatedOutput(filename, content)) {
-    rtc::Pathname out_file(FLAGS_isolated_out_dir, filename);
-    rtc::File input = rtc::File::Open(out_file);
-    EXPECT_TRUE(input.IsOpen());
-    EXPECT_TRUE(input.Seek(0));
-    uint8_t buffer[32];
-    EXPECT_EQ(input.Read(buffer, strlen(content)), strlen(content));
-    buffer[strlen(content)] = 0;
-    EXPECT_EQ(std::string(content),
-              std::string(reinterpret_cast<char*>(buffer)));
-    input.Close();
-
-    EXPECT_TRUE(rtc::File::Remove(out_file));
-  }
-}
-
-}  // namespace test
-}  // namespace webrtc