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// Copyright (c) 2012 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 <string>
#include "base/base64.h"
#include "base/format_macros.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/time.h"
#include "chrome/common/metrics/metrics_log_base.h"
#include "googleurl/src/gurl.h"
#include "testing/gtest/include/gtest/gtest.h"
using base::TimeDelta;
namespace {
// Since buildtime is highly variable, this function will scan an output log and
// replace it with a consistent number.
void NormalizeBuildtime(std::string* xml_encoded) {
std::string prefix = "buildtime=\"";
const char postfix = '\"';
size_t offset = xml_encoded->find(prefix);
ASSERT_NE(std::string::npos, offset);
offset += prefix.size();
size_t postfix_position = xml_encoded->find(postfix, offset);
ASSERT_NE(std::string::npos, postfix_position);
for (size_t i = offset; i < postfix_position; ++i) {
char digit = xml_encoded->at(i);
ASSERT_GE(digit, '0');
ASSERT_LE(digit, '9');
}
// Insert a single fake buildtime.
xml_encoded->replace(offset, postfix_position - offset, "123246");
}
class NoTimeMetricsLogBase : public MetricsLogBase {
public:
NoTimeMetricsLogBase(std::string client_id,
int session_id,
std::string version_string):
MetricsLogBase(client_id, session_id, version_string) {}
virtual ~NoTimeMetricsLogBase() {}
// Override this so that output is testable.
virtual std::string GetCurrentTimeString() OVERRIDE {
return std::string();
}
};
} // namespace
TEST(MetricsLogBaseTest, EmptyRecord) {
std::string expected_output =
#if defined(OS_CHROMEOS)
"<log clientid=\"bogus client ID\" buildtime=\"123456789\" "
"appversion=\"bogus version\" hardwareclass=\"sample-class\"/>";
#else
"<log clientid=\"bogus client ID\" buildtime=\"123456789\" "
"appversion=\"bogus version\"/>";
#endif // OS_CHROMEOS
MetricsLogBase log("bogus client ID", 0, "bogus version");
log.set_hardware_class("sample-class");
log.CloseLog();
int size = log.GetEncodedLogSizeXml();
ASSERT_GT(size, 0);
std::string encoded;
// Leave room for the NUL terminator.
ASSERT_TRUE(log.GetEncodedLogXml(WriteInto(&encoded, size + 1), size));
TrimWhitespaceASCII(encoded, TRIM_ALL, &encoded);
NormalizeBuildtime(&encoded);
NormalizeBuildtime(&expected_output);
ASSERT_EQ(expected_output, encoded);
}
TEST(MetricsLogBaseTest, WindowEvent) {
std::string expected_output =
"<log clientid=\"bogus client ID\" buildtime=\"123456789\" "
"appversion=\"bogus version\">\n"
" <window action=\"create\" windowid=\"0\" session=\"0\" time=\"\"/>\n"
" <window action=\"open\" windowid=\"1\" parent=\"0\" "
"session=\"0\" time=\"\"/>\n"
" <window action=\"close\" windowid=\"1\" parent=\"0\" "
"session=\"0\" time=\"\"/>\n"
" <window action=\"destroy\" windowid=\"0\" session=\"0\" time=\"\"/>\n"
"</log>";
NoTimeMetricsLogBase log("bogus client ID", 0, "bogus version");
log.RecordWindowEvent(MetricsLogBase::WINDOW_CREATE, 0, -1);
log.RecordWindowEvent(MetricsLogBase::WINDOW_OPEN, 1, 0);
log.RecordWindowEvent(MetricsLogBase::WINDOW_CLOSE, 1, 0);
log.RecordWindowEvent(MetricsLogBase::WINDOW_DESTROY, 0, -1);
log.CloseLog();
ASSERT_EQ(4, log.num_events());
int size = log.GetEncodedLogSizeXml();
ASSERT_GT(size, 0);
std::string encoded;
// Leave room for the NUL terminator.
ASSERT_TRUE(log.GetEncodedLogXml(WriteInto(&encoded, size + 1), size));
TrimWhitespaceASCII(encoded, TRIM_ALL, &encoded);
NormalizeBuildtime(&encoded);
NormalizeBuildtime(&expected_output);
ASSERT_EQ(expected_output, encoded);
}
TEST(MetricsLogBaseTest, LoadEvent) {
std::string expected_output =
#if defined(OS_CHROMEOS)
"<log clientid=\"bogus client ID\" buildtime=\"123456789\" "
"appversion=\"bogus version\" hardwareclass=\"sample-class\">\n"
" <document action=\"load\" docid=\"1\" window=\"3\" loadtime=\"7219\" "
"origin=\"link\" session=\"0\" time=\"\"/>\n"
"</log>";
#else
"<log clientid=\"bogus client ID\" buildtime=\"123456789\" "
"appversion=\"bogus version\">\n"
" <document action=\"load\" docid=\"1\" window=\"3\" loadtime=\"7219\" "
"origin=\"link\" session=\"0\" time=\"\"/>\n"
"</log>";
#endif // OS_CHROMEOS
NoTimeMetricsLogBase log("bogus client ID", 0, "bogus version");
log.RecordLoadEvent(3, GURL("http://google.com"),
content::PAGE_TRANSITION_LINK, 1,
TimeDelta::FromMilliseconds(7219));
log.set_hardware_class("sample-class");
log.CloseLog();
ASSERT_EQ(1, log.num_events());
int size = log.GetEncodedLogSizeXml();
ASSERT_GT(size, 0);
std::string encoded;
// Leave room for the NUL terminator.
ASSERT_TRUE(log.GetEncodedLogXml(WriteInto(&encoded, size + 1), size));
TrimWhitespaceASCII(encoded, TRIM_ALL, &encoded);
NormalizeBuildtime(&encoded);
NormalizeBuildtime(&expected_output);
ASSERT_EQ(expected_output, encoded);
}
// Make sure our ID hashes are the same as what we see on the server side.
TEST(MetricsLogBaseTest, CreateHashes) {
static const struct {
std::string input;
std::string output;
} cases[] = {
{"Back", "0x0557fa923dcee4d0"},
{"Forward", "0x67d2f6740a8eaebf"},
{"NewTab", "0x290eb683f96572f1"},
};
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) {
std::string hash_string;
uint64 hash_numeric;
MetricsLogBase::CreateHashes(cases[i].input, &hash_string, &hash_numeric);
// Verify the numeric representation.
{
std::string hash_numeric_hex =
base::StringPrintf("0x%016" PRIx64, hash_numeric);
EXPECT_EQ(cases[i].output, hash_numeric_hex);
}
// Verify the string representation.
{
std::string hash_string_decoded;
ASSERT_TRUE(base::Base64Decode(hash_string, &hash_string_decoded));
// Convert to hex string
// We're only checking the first 8 bytes, because that's what
// the metrics server uses.
std::string hash_string_hex = "0x";
ASSERT_GE(hash_string_decoded.size(), 8U);
for (size_t j = 0; j < 8; j++) {
base::StringAppendF(&hash_string_hex, "%02x",
static_cast<uint8>(hash_string_decoded.data()[j]));
}
EXPECT_EQ(cases[i].output, hash_string_hex);
}
}
};
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