1 files changed, 58 insertions, 0 deletions
diff --git a/libartbase/base/time_utils_test.cc b/libartbase/base/time_utils_test.cc
new file mode 100644
index 0000000000..c553f4ed03
--- /dev/null
+++ b/libartbase/base/time_utils_test.cc
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "time_utils.h"
+
+#include "gtest/gtest.h"
+
+namespace art {
+
+TEST(TimeUtilsTest, PrettyDuration) {
+  const uint64_t one_sec = 1000000000;
+  const uint64_t one_ms  = 1000000;
+  const uint64_t one_us  = 1000;
+
+  EXPECT_EQ("1s", PrettyDuration(1 * one_sec));
+  EXPECT_EQ("10s", PrettyDuration(10 * one_sec));
+  EXPECT_EQ("100s", PrettyDuration(100 * one_sec));
+  EXPECT_EQ("1.001s", PrettyDuration(1 * one_sec + one_ms));
+  EXPECT_EQ("1.000001s", PrettyDuration(1 * one_sec + one_us, 6));
+  EXPECT_EQ("1.000000001s", PrettyDuration(1 * one_sec + 1, 9));
+  EXPECT_EQ("1.000s", PrettyDuration(1 * one_sec + one_us, 3));
+
+  EXPECT_EQ("1ms", PrettyDuration(1 * one_ms));
+  EXPECT_EQ("10ms", PrettyDuration(10 * one_ms));
+  EXPECT_EQ("100ms", PrettyDuration(100 * one_ms));
+  EXPECT_EQ("1.001ms", PrettyDuration(1 * one_ms + one_us));
+  EXPECT_EQ("1.000001ms", PrettyDuration(1 * one_ms + 1, 6));
+
+  EXPECT_EQ("1us", PrettyDuration(1 * one_us));
+  EXPECT_EQ("10us", PrettyDuration(10 * one_us));
+  EXPECT_EQ("100us", PrettyDuration(100 * one_us));
+  EXPECT_EQ("1.001us", PrettyDuration(1 * one_us + 1));
+
+  EXPECT_EQ("1ns", PrettyDuration(1));
+  EXPECT_EQ("10ns", PrettyDuration(10));
+  EXPECT_EQ("100ns", PrettyDuration(100));
+}
+
+TEST(TimeUtilsTest, TestSleep) {
+  auto start = NanoTime();
+  NanoSleep(MsToNs(1500));
+  EXPECT_GT(NanoTime() - start, MsToNs(1000));
+}
+
+}  // namespace art