Protect on some overflow scenarios, add a test and build/run the test

1 files changed, 14 insertions, 1 deletions

diff --git a/test/cpp/util/time_test.cc b/test/cpp/util/time_test.cc
index 2e17add67f..4641fdb4da 100644
--- a/test/cpp/util/time_test.cc
+++ b/test/cpp/util/time_test.cc
@@ -61,11 +61,24 @@ TEST_F(TimeTest, AbsolutePointTest) {
   EXPECT_TRUE(tp == tp_converted_2);
 }
 
-// gpr_inf_future is treated specially and mapped to time_point::max()
+// 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_timespec from_time_point_max;
+  Timepoint2Timespec(system_clock::time_point::max(), &from_time_point_max);
+  EXPECT_EQ(0, gpr_time_cmp(gpr_inf_future, 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, from_time_point_max));
 }
 
 }  // namespace
 }  // namespace grpc
+
+int main(int argc, char** argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}