Side effects with EXPECT_XX macros

[CJLove]

If the function under test is called directly as an argument in one of the EXPECT_XX() macros and the test fails then the function is called a 2nd time when reporting the test failure:

EXPECT_EQ(1,my_test_func());

Workaround is to call the function under test first:

int result = my_test_func();
EXPECT_EQ(1,result);