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Added note about ! operator

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Phil Nash 2010-11-10 07:59:07 +00:00
parent 3455e55538
commit 16a6dd5746
1 changed files with 6 additions and 0 deletions
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6
Test/ConditionTests.cpp
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@ -155,6 +155,12 @@ TEST_CASE( "failing/conditions/ordered", "Ordering comparison checks that should
} }
// Not (!) tests // Not (!) tests
// The problem with the ! operator is that it has right-to-left associativity.
// This means we can't isolate it when we decompose. The simple CHECK( !false ) form, therefore,
// cannot have the operand value extracted. The test will work correctly, and the situation
// is detected and a warning issued.
// An alternative form of the macros (CHECK_NOT and EXPECT_NOT) can be used instead to capture
// the operand value.
TEST_CASE( "succeeding/conditions/not", "'Not' checks that should succeed" ) TEST_CASE( "succeeding/conditions/not", "'Not' checks that should succeed" )
{ {
bool falseValue = false; bool falseValue = false;