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// Copyright 2014 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/metrics/extension_metrics.h"
#include <string>
#include "chrome/common/metrics/proto/system_profile.pb.h"
#include "extensions/common/extension.h"
#include "extensions/common/extension_builder.h"
#include "extensions/common/extension_set.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
class TestHashedExtensionMetrics : public HashedExtensionMetrics {
public:
explicit TestHashedExtensionMetrics(uint64 client_id)
: HashedExtensionMetrics(client_id) {}
// Makes the protected HashExtension method available to testing code.
using HashedExtensionMetrics::HashExtension;
protected:
// Override the GetInstalledExtensions method to return a set of extensions
// for tests.
virtual scoped_ptr<extensions::ExtensionSet> GetInstalledExtensions()
OVERRIDE {
scoped_ptr<extensions::ExtensionSet> extensions(
new extensions::ExtensionSet());
scoped_refptr<const extensions::Extension> extension;
extension = extensions::ExtensionBuilder()
.SetManifest(extensions::DictionaryBuilder()
.Set("name", "Test extension")
.Set("version", "1.0.0")
.Set("manifest_version", 2))
.SetID("ahfgeienlihckogmohjhadlkjgocpleb")
.Build();
extensions->Insert(extension);
extension = extensions::ExtensionBuilder()
.SetManifest(extensions::DictionaryBuilder()
.Set("name", "Test extension 2")
.Set("version", "1.0.0")
.Set("manifest_version", 2))
.SetID("pknkgggnfecklokoggaggchhaebkajji")
.Build();
extensions->Insert(extension);
extension = extensions::ExtensionBuilder()
.SetManifest(extensions::DictionaryBuilder()
.Set("name", "Colliding Extension")
.Set("version", "1.0.0")
.Set("manifest_version", 2))
.SetID("mdhofdjgenpkhlmddfaegdjddcecipmo")
.Build();
extensions->Insert(extension);
return extensions.Pass();
}
};
} // namespace
// Checks that the hash function used to hide precise extension IDs produces
// the expected values.
TEST(HashedExtensionMetrics, HashExtension) {
EXPECT_EQ(978, TestHashedExtensionMetrics::HashExtension(
"ahfgeienlihckogmohjhadlkjgocpleb", 0));
EXPECT_EQ(10, TestHashedExtensionMetrics::HashExtension(
"ahfgeienlihckogmohjhadlkjgocpleb", 3817));
EXPECT_EQ(1007, TestHashedExtensionMetrics::HashExtension(
"pknkgggnfecklokoggaggchhaebkajji", 3817));
EXPECT_EQ(10, TestHashedExtensionMetrics::HashExtension(
"mdhofdjgenpkhlmddfaegdjddcecipmo", 3817));
}
// Checks that the fake set of extensions provided by
// TestHashedExtensionMetrics is encoded properly.
TEST(HashedExtensionMetrics, SystemProtoEncoding) {
metrics::SystemProfileProto system_profile;
TestHashedExtensionMetrics extension_metrics(0x3f1bfee9);
extension_metrics.WriteExtensionList(&system_profile);
ASSERT_EQ(2, system_profile.occupied_extension_bucket_size());
EXPECT_EQ(10, system_profile.occupied_extension_bucket(0));
EXPECT_EQ(1007, system_profile.occupied_extension_bucket(1));
}
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