e.g. EXPECT_EQ(expected, actual) vs. the opposite. Some of our tests flip this order, which can make failure output difficult to understand.
Side note: Same applies to the gtest ASSERT macros; they are the same except that they stop the entire test if the assertion fails. I suspect in many cases we are using ASSERT where we should instead be using EXPECT, and likely we have the same backwards mistake.
<rdar://problem/83460692>