Resubmit 21609003: Move ExtensionError to extensions/, add error limits

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/json/json_writer.h"
+#include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
+#include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
-#include "chrome/browser/extensions/error_console/extension_error.h"
 #include "chrome/test/base/testing_profile.h"
-#include "extensions/common/id_util.h"
+#include "content/public/common/url_constants.h"
+#include "extensions/browser/extension_error.h"
+#include "extensions/common/constants.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::string16;
 using base::UTF8ToUTF16;
 
 namespace extensions {
 
 namespace {
 
-scoped_ptr<ExtensionError> CreateNewManifestError(bool from_incognito) {
-  return scoped_ptr<ExtensionError>(
-      new ManifestParsingError(from_incognito,
-                               UTF8ToUTF16("source"),
-                               UTF8ToUTF16("message"),
-                               0u /* line number */ ));
+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(
+      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())) {
   }
   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";
   // Populate with both incognito and non-incognito errors (evenly distributed).
-  for (size_t i = 0; i < kNumTotalErrors; ++i)
-    error_console_->ReportError(CreateNewManifestError(i % 2 == 0));
+  for (size_t i = 0; i < kNumTotalErrors; ++i) {
+    error_console_->ReportError(
+        CreateNewRuntimeError(i % 2 == 0, kId, string16()));
+  }
 
-  ASSERT_EQ(kNumTotalErrors, error_console_->errors().size());
+  // 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();
-  ASSERT_EQ(kNumNonIncognitoErrors, error_console_->errors().size());
-  for (size_t i = 0; i < error_console_->errors().size(); ++i)
-    ASSERT_FALSE(error_console_->errors()[i]->from_incognito());
+  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());
 
-  // Remove an error by address.
-  error_console_->RemoveError(error_console_->errors()[1]);
-  ASSERT_EQ(kNumNonIncognitoErrors - 1, error_console_->errors().size());
+  // Add another error for a different extension id.
+  const char kSecondId[] = "id2";
+  error_console_->ReportError(
+      CreateNewRuntimeError(false, kSecondId, string16()));
 
-  // Remove all remaining errors.
+  // 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);
+  ASSERT_EQ(1u, error_console_->errors().size());
+  ASSERT_EQ(0u, error_console_->GetErrorsForExtension(kSecondId).size());
+  // First extension should be unaffected.
+  ASSERT_EQ(kNumNonIncognitoErrors,
+            error_console_->GetErrorsForExtension(kId).size());
+
+  // Remove remaining errors.
   error_console_->RemoveAllErrors();
   ASSERT_EQ(0u, error_console_->errors().size());
+  ASSERT_EQ(0u, error_console_->GetErrorsForExtension(kId).size());
+}
+
+// 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";
+
+  // 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));
+  // ..and the last stored should be the 105th reported.
+  ASSERT_EQ(errors.back()->message(),
+            base::UintToString16(kMaxErrorsPerExtension + kNumExtraErrors - 1));
 }
 
 }  // namespace extensions