Download cleanup tool based on experiment config and OS bitness

chrome/browser/safe_browsing/chrome_cleaner/srt_field_trial_win_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 "chrome/browser/safe_browsing/chrome_cleaner/srt_field_trial_win.h"
+
+#include <map>
+#include <string>
+
+#include "base/metrics/field_trial.h"
+#include "base/win/windows_version.h"
+#include "components/variations/variations_associated_data.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace safe_browsing {
+
+class SRTDownloadURLTest : public ::testing::Test {
+ protected:
+  void SetUp() override {
+    field_trial_list_ = std::make_unique<base::FieldTrialList>(nullptr);
+  }
+
+  void CreatePromptTrial(const std::string& experiment_name,
+                         const std::string& download_group) {
+    std::map<std::string, std::string> params;
+    if (!download_group.empty())
+      params["download_group"] = download_group;
+
+    // Assigned trials will go out of scope when field_trial_list_ goes out
+    // of scope.
+    constexpr char kTrialName[] = "SRTPromptFieldTrial";
+    variations::AssociateVariationParams(kTrialName, experiment_name, params);
+    base::FieldTrialList::CreateFieldTrial(kTrialName, experiment_name);
+  }
+
+ private:
+  std::unique_ptr<base::FieldTrialList> field_trial_list_;
+};
+
+TEST_F(SRTDownloadURLTest, Stable) {
+  CreatePromptTrial("On", "");
+  EXPECT_EQ("/dl/softwareremovaltool/win/chrome_cleanup_tool.exe",
+            GetSRTDownloadURL().path());
+}
+
+TEST_F(SRTDownloadURLTest, Canary) {
+  CreatePromptTrial("SRTCanary", "");
+  EXPECT_EQ("/dl/softwareremovaltool/win/c/chrome_cleanup_tool.exe",
+            GetSRTDownloadURL().path());
+}
+
+TEST_F(SRTDownloadURLTest, Experiment) {
+  CreatePromptTrial("Experiment", "experiment");
+  std::string expected_path;
+  if (base::win::OSInfo::GetInstance()->architecture() ==
+      base::win::OSInfo::X86_ARCHITECTURE) {
+    expected_path =
+        "/dl/softwareremovaltool/win/x86/experiment/chrome_cleanup_tool.exe";
+  } else {
+    expected_path =
+        "/dl/softwareremovaltool/win/x64/experiment/chrome_cleanup_tool.exe";
+  }
+  EXPECT_EQ(expected_path, GetSRTDownloadURL().path());
+}
+
+TEST_F(SRTDownloadURLTest, DefaultsToStable) {
+  EXPECT_EQ("/dl/softwareremovaltool/win/chrome_cleanup_tool.exe",
+            GetSRTDownloadURL().path());
+}
+
+}  // namespace safe_browsing