metrics: add PersistentInteger unit test.
BUG=chromium:339588
TEST=P2_TEST_FILTER="metrics::*" FEATURES=test emerge-panther -v platform2
BRANCH=none
Change-Id: I78bdd8eed2da69ae6284d0f7770918d1be9f0e9f
Reviewed-on: https://chromium-review.googlesource.com/190121
Reviewed-by: Luigi Semenzato <semenzato@chromium.org>
Tested-by: Luigi Semenzato <semenzato@chromium.org>
Commit-Queue: Luigi Semenzato <semenzato@chromium.org>
diff --git a/metrics/metrics.gyp b/metrics/metrics.gyp
index 2906a64..834e52f 100644
--- a/metrics/metrics.gyp
+++ b/metrics/metrics.gyp
@@ -63,6 +63,15 @@
['USE_test == 1', {
'targets': [
{
+ 'target_name': 'persistent_integer_test',
+ 'type': 'executable',
+ 'includes': ['../common-mk/common_test.gypi'],
+ 'sources': [
+ 'persistent_integer.cc',
+ 'persistent_integer_test.cc',
+ ]
+ },
+ {
'target_name': 'metrics_library_test',
'type': 'executable',
'dependencies': [
diff --git a/metrics/persistent_integer_test.cc b/metrics/persistent_integer_test.cc
new file mode 100644
index 0000000..ec3a6e4
--- /dev/null
+++ b/metrics/persistent_integer_test.cc
@@ -0,0 +1,67 @@
+// Copyright (c) 2014 The Chromium OS 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 <gtest/gtest.h>
+
+#include <base/compiler_specific.h>
+#include <base/file_util.h>
+#include <base/files/file_enumerator.h>
+
+#include "metrics/persistent_integer.h"
+
+const char kBackingFileName[] = "1.pibakf";
+const char kBackingFilePattern[] = "*.pibakf";
+
+using chromeos_metrics::PersistentInteger;
+
+class PersistentIntegerTest : public testing::Test {
+
+ virtual void SetUp() OVERRIDE {
+ // Set testing mode.
+ chromeos_metrics::PersistentInteger::SetTestingMode(true);
+ }
+
+ virtual void TearDown() OVERRIDE {
+ // Remove backing files. The convention is that they all end in ".pibakf".
+ base::FileEnumerator f_enum(base::FilePath("."),
+ false,
+ base::FileEnumerator::FILES,
+ FILE_PATH_LITERAL(kBackingFilePattern));
+ for (base::FilePath name = f_enum.Next();
+ !name.empty();
+ name = f_enum.Next()) {
+ base::DeleteFile(name, false);
+ }
+ }
+};
+
+TEST_F(PersistentIntegerTest, BasicChecks) {
+ scoped_ptr<PersistentInteger> pi(new PersistentInteger(kBackingFileName));
+
+ // Test initialization.
+ EXPECT_EQ(0, pi->Get());
+ EXPECT_EQ(kBackingFileName, pi->Name()); // boring
+
+ // Test set and add.
+ pi->Set(2);
+ pi->Add(3);
+ EXPECT_EQ(5, pi->Get());
+
+ // Test persistence.
+ pi.reset(new PersistentInteger(kBackingFileName));
+ EXPECT_EQ(5, pi->Get());
+
+ // Test GetAndClear.
+ EXPECT_EQ(5, pi->GetAndClear());
+ EXPECT_EQ(pi->Get(), 0);
+
+ // Another persistence test.
+ pi.reset(new PersistentInteger(kBackingFileName));
+ EXPECT_EQ(0, pi->Get());
+}
+
+int main(int argc, char** argv) {
+ testing::InitGoogleTest(&argc, argv);
+ return RUN_ALL_TESTS();
+}