GCAPI should append to the existing experiment_labels instead of clobbering them.

chrome/installer/gcapi/gcapi_omaha_experiment_test.cc

Index: chrome/installer/gcapi/gcapi_omaha_experiment_test.cc
diff --git a/chrome/installer/gcapi/gcapi_omaha_experiment_test.cc b/chrome/installer/gcapi/gcapi_omaha_experiment_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f2a66c8f0e8f5e8ff268882ea75495846e99e999
--- /dev/null
+++ b/chrome/installer/gcapi/gcapi_omaha_experiment_test.cc
@@ -0,0 +1,180 @@
+// Copyright 2013 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/installer/gcapi/gcapi_omaha_experiment.h"
+
+#include "chrome/installer/gcapi/gcapi.h"
+#include "chrome/installer/gcapi/gcapi_test_registry_overrider.h"
+#include "chrome/installer/util/google_update_constants.h"
+#include "chrome/installer/util/google_update_settings.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+const wchar_t kBrand[] = L"ABCD";
+const uint16 kUserLevel = GCAPI_INVOKED_STANDARD_SHELL;
+
+const wchar_t kSomeExperiments[] = L"myexp=1|Aug 2;yourexp=2|Sep 5";
+const wchar_t kSomeOtherExperiments[] = L"anotherexp=joe|Jun 7 2008";
+const wchar_t kSomeMoreExperiments[] = L"moreexp=foo|Jul 31 1999";
+
+class GCAPIOmahaExperimentTest : public ::testing::Test {
+ protected:
+  GCAPIOmahaExperimentTest()
+      : brand_(kBrand),
+        reactivation_label_(gcapi_internals::GetGCAPIExperimentLabel(
+            kBrand, gcapi_internals::kReactivationLabel)),
+        relaunch_label_(gcapi_internals::GetGCAPIExperimentLabel(
+            kBrand, gcapi_internals::kRelaunchLabel)) {
+  }
+
+  void VerifyExperimentLabels(const string16& expected_labels) {
+    string16 actual_labels;
+    EXPECT_TRUE(GoogleUpdateSettings::ReadExperimentLabels(false,
+                                                           &actual_labels));
+    EXPECT_EQ(expected_labels, actual_labels);
+  }
+
+  string16 brand_;
+  string16 reactivation_label_;
+  string16 relaunch_label_;
+
+  const GCAPITestRegistryOverrider gcapi_test_registry_overrider_;
+};
+
+TEST_F(GCAPIOmahaExperimentTest, SetReactivationLabelFromEmptyExperiments) {
+  ASSERT_TRUE(SetReactivationExperimentLabels(kBrand, kUserLevel));
+  VerifyExperimentLabels(reactivation_label_);
+}
+
+// Test the relaunch label once; all other tests go more in depth, but since
+// both labels use the same logic underneath there is no need to test both in
+// depth.
+TEST_F(GCAPIOmahaExperimentTest, SetRelaunchLabelFromEmptyExperiments) {
+  ASSERT_TRUE(SetRelaunchExperimentLabels(kBrand, kUserLevel));
+  VerifyExperimentLabels(relaunch_label_);
+}
+
+TEST_F(GCAPIOmahaExperimentTest, SetReactivationLabelWithExistingExperiments) {
+  GoogleUpdateSettings::SetExperimentLabels(false, kSomeExperiments);
+
+  ASSERT_TRUE(SetReactivationExperimentLabels(kBrand, kUserLevel));
+
+  string16 expected_labels(kSomeExperiments);
+  expected_labels.append(google_update::kExperimentLabelSep);
+  expected_labels.append(reactivation_label_);
+  VerifyExperimentLabels(expected_labels);
+}
+
+TEST_F(GCAPIOmahaExperimentTest,
+       SetReactivationLabelWithExistingIdenticalExperiment) {
+  string16 previous_labels(kSomeExperiments);
+  previous_labels.append(google_update::kExperimentLabelSep);
+  previous_labels.append(reactivation_label_);
+  previous_labels.append(google_update::kExperimentLabelSep);
+  previous_labels.append(kSomeOtherExperiments);
+  GoogleUpdateSettings::SetExperimentLabels(false, previous_labels);
+
+  ASSERT_TRUE(SetReactivationExperimentLabels(kBrand, kUserLevel));
+
+  string16 expected_labels(kSomeExperiments);
+  expected_labels.append(google_update::kExperimentLabelSep);
+  expected_labels.append(kSomeOtherExperiments);
+  expected_labels.append(google_update::kExperimentLabelSep);
+  expected_labels.append(reactivation_label_);
+  VerifyExperimentLabels(expected_labels);
+}
+
+TEST_F(GCAPIOmahaExperimentTest,
+       SetReactivationLabelWithExistingIdenticalAtBeginning) {
+  string16 previous_labels(reactivation_label_);
+  previous_labels.append(google_update::kExperimentLabelSep);
+  previous_labels.append(kSomeExperiments);
+  GoogleUpdateSettings::SetExperimentLabels(false, previous_labels);
+
+  ASSERT_TRUE(SetReactivationExperimentLabels(kBrand, kUserLevel));
+
+  string16 expected_labels(kSomeExperiments);
+  expected_labels.append(google_update::kExperimentLabelSep);
+  expected_labels.append(reactivation_label_);
+  VerifyExperimentLabels(expected_labels);
+}
+
+TEST_F(GCAPIOmahaExperimentTest,
+       SetReactivationLabelWithFakeMatchInAnExperiment) {
+  string16 previous_labels(kSomeExperiments);
+  previous_labels.append(google_update::kExperimentLabelSep);
+  previous_labels.append(L"blah_");
+  // Shouldn't match deletion criteria.
+  previous_labels.append(reactivation_label_);
+  previous_labels.append(google_update::kExperimentLabelSep);
+  previous_labels.append(kSomeOtherExperiments);
+  previous_labels.append(google_update::kExperimentLabelSep);
+  // Should match the deletion criteria.
+  previous_labels.append(reactivation_label_);
+  previous_labels.append(google_update::kExperimentLabelSep);
+  previous_labels.append(kSomeMoreExperiments);
+  GoogleUpdateSettings::SetExperimentLabels(false, previous_labels);
+
+  ASSERT_TRUE(SetReactivationExperimentLabels(kBrand, kUserLevel));
+
+  string16 expected_labels(kSomeExperiments);
+  expected_labels.append(google_update::kExperimentLabelSep);
+  expected_labels.append(L"blah_");
+  expected_labels.append(reactivation_label_);
+  expected_labels.append(google_update::kExperimentLabelSep);
+  expected_labels.append(kSomeOtherExperiments);
+  expected_labels.append(google_update::kExperimentLabelSep);
+  expected_labels.append(kSomeMoreExperiments);
+  expected_labels.append(google_update::kExperimentLabelSep);
+  expected_labels.append(reactivation_label_);
+  VerifyExperimentLabels(expected_labels);
+}
+
+TEST_F(GCAPIOmahaExperimentTest,
+       SetReactivationLabelWithFakeMatchInAnExperimentAndNoRealMatch) {
+  string16 previous_labels(kSomeExperiments);
+  previous_labels.append(google_update::kExperimentLabelSep);
+  previous_labels.append(L"blah_");
+  // Shouldn't match deletion criteria.
+  previous_labels.append(reactivation_label_);
+  previous_labels.append(google_update::kExperimentLabelSep);
+  previous_labels.append(kSomeOtherExperiments);
+  GoogleUpdateSettings::SetExperimentLabels(false, previous_labels);
+
+  ASSERT_TRUE(SetReactivationExperimentLabels(kBrand, kUserLevel));
+
+  string16 expected_labels(kSomeExperiments);
+  expected_labels.append(google_update::kExperimentLabelSep);
+  expected_labels.append(L"blah_");
+  expected_labels.append(reactivation_label_);
+  expected_labels.append(google_update::kExperimentLabelSep);
+  expected_labels.append(kSomeOtherExperiments);
+  expected_labels.append(google_update::kExperimentLabelSep);
+  expected_labels.append(reactivation_label_);
+  VerifyExperimentLabels(expected_labels);
+}
+
+TEST_F(GCAPIOmahaExperimentTest,
+       SetReactivationLabelWithExistingEntryWithLabelAsPrefix) {
+  string16 previous_labels(kSomeExperiments);
+  previous_labels.append(google_update::kExperimentLabelSep);
+  // Append prefix matching the label, but not followed by '='.
+  previous_labels.append(gcapi_internals::kReactivationLabel);
+  // Shouldn't match deletion criteria.
+  previous_labels.append(kSomeOtherExperiments);
+  GoogleUpdateSettings::SetExperimentLabels(false, previous_labels);
+
+  ASSERT_TRUE(SetReactivationExperimentLabels(kBrand, kUserLevel));
+
+  string16 expected_labels(kSomeExperiments);
+  expected_labels.append(google_update::kExperimentLabelSep);
+  expected_labels.append(gcapi_internals::kReactivationLabel);
+  expected_labels.append(kSomeOtherExperiments);
+  expected_labels.append(google_update::kExperimentLabelSep);
+  expected_labels.append(reactivation_label_);
+  VerifyExperimentLabels(expected_labels);
+}
+
+}  // namespace