Initial checkin of gRPC to third_party/

third_party/grpc/test/cpp/util/time_test.cc

+/*
+ *
+ * Copyright 2015-2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <grpc/support/time.h>
+#include <grpc++/support/time.h>
+#include <gtest/gtest.h>
+
+using std::chrono::duration_cast;
+using std::chrono::microseconds;
+using std::chrono::system_clock;
+
+namespace grpc {
+namespace {
+
+class TimeTest : public ::testing::Test {};
+
+TEST_F(TimeTest, AbsolutePointTest) {
+  int64_t us = 10000000L;
+  gpr_timespec ts = gpr_time_from_micros(us, GPR_TIMESPAN);
+  ts.clock_type = GPR_CLOCK_REALTIME;
+  system_clock::time_point tp{microseconds(us)};
+  system_clock::time_point tp_converted = Timespec2Timepoint(ts);
+  gpr_timespec ts_converted;
+  Timepoint2Timespec(tp_converted, &ts_converted);
+  EXPECT_TRUE(ts.tv_sec == ts_converted.tv_sec);
+  EXPECT_TRUE(ts.tv_nsec == ts_converted.tv_nsec);
+  system_clock::time_point tp_converted_2 = Timespec2Timepoint(ts_converted);
+  EXPECT_TRUE(tp == tp_converted);
+  EXPECT_TRUE(tp == tp_converted_2);
+}
+
+// gpr_inf_future is treated specially and mapped to/from time_point::max()
+TEST_F(TimeTest, InfFuture) {
+  EXPECT_EQ(system_clock::time_point::max(),
+            Timespec2Timepoint(gpr_inf_future(GPR_CLOCK_REALTIME)));
+  gpr_timespec from_time_point_max;
+  Timepoint2Timespec(system_clock::time_point::max(), &from_time_point_max);
+  EXPECT_EQ(
+      0, gpr_time_cmp(gpr_inf_future(GPR_CLOCK_REALTIME), from_time_point_max));
+  // This will cause an overflow
+  Timepoint2Timespec(
+      std::chrono::time_point<system_clock, std::chrono::seconds>::max(),
+      &from_time_point_max);
+  EXPECT_EQ(
+      0, gpr_time_cmp(gpr_inf_future(GPR_CLOCK_REALTIME), from_time_point_max));
+}
+
+}  // namespace
+}  // namespace grpc
+
+int main(int argc, char** argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}