Rename IsNan as MyIsNan since gtest ≥v1.12 now includes it

Author: hpwxf

gtest/gtest-matchers--unittest.cpp

@@ -7,18 +7,20 @@
 
 // more details in
 // https://github.com/google/googletest/blob/master/docs/gmock_cheat_sheet.md#defining-matchers
-MATCHER(IsEven, "") { return (arg % 2) == 0; }
-MATCHER(IsNan, "NaN value") { return ::std::isnan(arg); }
-MATCHER_P(IsDivisibleBy, n, "") {
-  *result_listener << "where the remainder is " << (arg % n);
-  return (arg % n) == 0;
+MATCHER(MyIsEven, "") { return (arg % 2) == 0; }
+// IsNan is now alailable in gtest v1.12
+MATCHER(MyIsNan, "NaN value") { return ::std::isnan(arg); }
+
+MATCHER_P(MyIsDivisibleBy, n, "") {
+    *result_listener << "where the remainder is " << (arg % n);
+    return (arg % n) == 0;
 }
 
 TEST(SuitName, TestCaseName) {
-  using ::testing::Not;
-  using namespace ::testing;
+    using ::testing::Not;
+    using namespace ::testing;
 
-  ASSERT_THAT(2, IsEven());
-  ASSERT_THAT(2.0, Not(IsNan()));
-  ASSERT_THAT(12, IsDivisibleBy(4));
+    ASSERT_THAT(2, MyIsEven());
+    ASSERT_THAT(2.0, Not(MyIsNan()));
+    ASSERT_THAT(12, MyIsDivisibleBy(4));
 }