ErrorConsole Switch, Duplicate Error Detection, Dev Mode Check

chrome/browser/extensions/error_console/error_console_unittest.cc

 // 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/browser/extensions/error_console/error_console.h"
 
+#include "base/command_line.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/prefs/pref_service.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
+#include "chrome/common/pref_names.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/common/url_constants.h"
 #include "extensions/browser/extension_error.h"
 #include "extensions/common/constants.h"
+#include "extensions/common/id_util.h"
+#include "extensions/common/switches.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::string16;
 using base::UTF8ToUTF16;
 
 namespace extensions {
 
 namespace {
 
 const char kExecutionContextURLKey[] = "executionContextURL";
 const char kStackTraceKey[] = "stackTrace";
 
 string16 CreateErrorDetails(const std::string& extension_id) {
   base::DictionaryValue value;
   value.SetString(
       kExecutionContextURLKey,
       std::string(kExtensionScheme) +
           content::kStandardSchemeSeparator +
           extension_id);
   value.Set(kStackTraceKey, new ListValue);
   std::string json_utf8;
   base::JSONWriter::Write(&value, &json_utf8);
   return UTF8ToUTF16(json_utf8);
 }
 
 scoped_ptr<const ExtensionError> CreateNewRuntimeError(
     bool from_incognito,
     const std::string& extension_id,
     const string16& message) {
-  return scoped_ptr<const ExtensionError>(new JavascriptRuntimeError(
+  return scoped_ptr<const ExtensionError>(new RuntimeError(
       from_incognito,
       UTF8ToUTF16("source"),
       message,
       logging::LOG_INFO,
       CreateErrorDetails(extension_id)));
 }
 
 }  // namespace
 
 class ErrorConsoleUnitTest : public testing::Test {
  public:
-  ErrorConsoleUnitTest() :
-      profile_(new TestingProfile),
-      error_console_(ErrorConsole::Get(profile_.get())) {
+  ErrorConsoleUnitTest() : error_console_(NULL) { }
+  virtual ~ErrorConsoleUnitTest() { }
+
+  virtual void SetUp() OVERRIDE {
+    testing::Test::SetUp();
+
+    // Errors are only kept if we have the necessary command line switch and
+    // have Developer Mode enabled.
+    CommandLine::ForCurrentProcess()->AppendSwitch(
+        switches::kEnableErrorConsole);
+    profile_.reset(new TestingProfile);
+    profile_->GetPrefs()->SetBoolean(prefs::kExtensionsUIDeveloperMode, true);
+    error_console_ = ErrorConsole::Get(profile_.get());
   }
-  virtual ~ErrorConsoleUnitTest() { }
 
  protected:
   scoped_ptr<TestingProfile> profile_;
   ErrorConsole* error_console_;
 };
 
 // Test adding errors, and removing them by reference, by incognito status,
 // and in bulk.
 TEST_F(ErrorConsoleUnitTest, AddAndRemoveErrors) {
   ASSERT_EQ(0u, error_console_->errors().size());
 
   const size_t kNumTotalErrors = 6;
   const size_t kNumNonIncognitoErrors = 3;
-  const char kId[] = "id";
+  const std::string kId = id_util::GenerateId("id");
   // Populate with both incognito and non-incognito errors (evenly distributed).
   for (size_t i = 0; i < kNumTotalErrors; ++i) {
     error_console_->ReportError(
-        CreateNewRuntimeError(i % 2 == 0, kId, string16()));
+        CreateNewRuntimeError(i % 2 == 0, kId, base::UintToString16(i)));
   }
 
   // There should only be one entry in the map, since errors are stored in lists
   // keyed by extension id.
   ASSERT_EQ(1u, error_console_->errors().size());
 
   ASSERT_EQ(kNumTotalErrors, error_console_->GetErrorsForExtension(kId).size());
 
   // Remove the incognito errors; three errors should remain, and all should
   // be from non-incognito contexts.
   error_console_->RemoveIncognitoErrors();
   const ErrorConsole::ErrorList& errors =
       error_console_->GetErrorsForExtension(kId);
   ASSERT_EQ(kNumNonIncognitoErrors, errors.size());
   for (size_t i = 0; i < errors.size(); ++i)
     ASSERT_FALSE(errors[i]->from_incognito());
 
   // Add another error for a different extension id.
-  const char kSecondId[] = "id2";
+  const std::string kSecondId = id_util::GenerateId("id2");
   error_console_->ReportError(
       CreateNewRuntimeError(false, kSecondId, string16()));
 
   // There should be two entries now, one for each id, and there should be one
   // error for the second extension.
   ASSERT_EQ(2u, error_console_->errors().size());
   ASSERT_EQ(1u, error_console_->GetErrorsForExtension(kSecondId).size());
 
   // Remove all errors for the second id.
   error_console_->RemoveErrorsForExtension(kSecondId);
@@ skipping 10 matching lines @@
 }
 
 // Test that if we add enough errors, only the most recent
 // kMaxErrorsPerExtension are kept.
 TEST_F(ErrorConsoleUnitTest, ExcessiveErrorsGetCropped) {
   ASSERT_EQ(0u, error_console_->errors().size());
 
   // This constant matches one of the same name in error_console.cc.
   const size_t kMaxErrorsPerExtension = 100;
   const size_t kNumExtraErrors = 5;
-  const char kId[] = "id";
+  const std::string kId = id_util::GenerateId("id");
 
   // Add new errors, with each error's message set to its number.
   for (size_t i = 0; i < kMaxErrorsPerExtension + kNumExtraErrors; ++i) {
     error_console_->ReportError(
         CreateNewRuntimeError(false, kId, base::UintToString16(i)));
   }
 
   ASSERT_EQ(1u, error_console_->errors().size());
 
   const ErrorConsole::ErrorList& errors =
       error_console_->GetErrorsForExtension(kId);
   ASSERT_EQ(kMaxErrorsPerExtension, errors.size());
 
   // We should have popped off errors in the order they arrived, so the
   // first stored error should be the 6th reported (zero-based)...
-  ASSERT_EQ(errors.front()->message(),
-            base::UintToString16(kNumExtraErrors));
+  ASSERT_EQ(base::UintToString16(kNumExtraErrors),
+            errors.front()->message());
   // ..and the last stored should be the 105th reported.
-  ASSERT_EQ(errors.back()->message(),
-            base::UintToString16(kMaxErrorsPerExtension + kNumExtraErrors - 1));
+  ASSERT_EQ(base::UintToString16(kMaxErrorsPerExtension + kNumExtraErrors - 1),
+            errors.back()->message());
+}
+
+// Test to ensure that the error console will not add duplicate errors, but will
+// keep the latest version of an error.
+TEST_F(ErrorConsoleUnitTest, DuplicateErrorsAreReplaced) {
+  ASSERT_EQ(0u, error_console_->errors().size());
+
+  const std::string kId = id_util::GenerateId("id");
+  const size_t kNumErrors = 3u;
+
+  // Report three errors.
+  for (size_t i = 0; i < kNumErrors; ++i) {
+    error_console_->ReportError(
+        CreateNewRuntimeError(false, kId, base::UintToString16(i)));
+  }
+
+  // Create an error identical to the second error reported, and save its
+  // location.
+  const size_t kDuplicateError = 1u;
+  scoped_ptr<const ExtensionError> runtime_error2 =
+      CreateNewRuntimeError(false, kId, base::UintToString16(kDuplicateError));
+  const ExtensionError* weak_error = runtime_error2.get();
+
+  // Add it to the error console.
+  error_console_->ReportError(runtime_error2.Pass());
+
+  // We should only have three errors stored, since two of the four reported
+  // were identical, and the older should have been replaced.
+  ASSERT_EQ(1u, error_console_->errors().size());
+  const ErrorConsole::ErrorList& errors =
+      error_console_->GetErrorsForExtension(kId);
+  ASSERT_EQ(kNumErrors, errors.size());
+
+  // The more-recently reported error should be in the slot of the error it
+  // replaced.
+  // Pointer comparison.
+  ASSERT_EQ(weak_error, errors[kDuplicateError]);
 }
 
 }  // namespace extensions