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Add stringification support to std::exception and deriving classes

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This support is based on overriden `std::exception::what` method, so
if an exception does not do so meaningfully, the message is still
pointless.

This is only used as a fallback, both `StringMaker` specialization and
`operator<<` overload have priority..
This commit is contained in:
Martin Hořeňovský
2018-05-12 17:46:25 +02:00
parent c323658483
commit 6c5c4c43a0
7 changed files with 147 additions and 26 deletions
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40
projects/SelfTest/Baselines/console.sw.approved.txt
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@@ -1680,6 +1680,34 @@ with expansion:
"this string contains 'abc' as a substring" equals: "something else" (case
insensitive)
-------------------------------------------------------------------------------
Exception as a value (e.g. in REQUIRE_THROWS_MATCHES) can be stringified
-------------------------------------------------------------------------------
ToStringGeneral.tests.cpp:<line number>
...............................................................................
ToStringGeneral.tests.cpp:<line number>:
PASSED:
REQUIRE( ::Catch::Detail::stringify(WhatException{}) == "This exception has overriden what() method" )
with expansion:
"This exception has overriden what() method"
==
"This exception has overriden what() method"
ToStringGeneral.tests.cpp:<line number>:
PASSED:
REQUIRE( ::Catch::Detail::stringify(OperatorException{}) == "OperatorException" )
with expansion:
"OperatorException" == "OperatorException"
ToStringGeneral.tests.cpp:<line number>:
PASSED:
REQUIRE( ::Catch::Detail::stringify(StringMakerException{}) == "StringMakerException" )
with expansion:
"StringMakerException"
==
"StringMakerException"
-------------------------------------------------------------------------------
Exception matchers that fail
No exception
@@ -1722,12 +1750,12 @@ Matchers.tests.cpp:<line number>
Matchers.tests.cpp:<line number>: FAILED:
CHECK_THROWS_MATCHES( throws(3), SpecialException, ExceptionMatcher{1} )
with expansion:
{?} special exception has value of 1
std::exception special exception has value of 1
Matchers.tests.cpp:<line number>: FAILED:
REQUIRE_THROWS_MATCHES( throws(4), SpecialException, ExceptionMatcher{1} )
with expansion:
{?} special exception has value of 1
std::exception special exception has value of 1
-------------------------------------------------------------------------------
Exception matchers that succeed
@@ -1739,13 +1767,13 @@ Matchers.tests.cpp:<line number>:
PASSED:
CHECK_THROWS_MATCHES( throws(1), SpecialException, ExceptionMatcher{1} )
with expansion:
{?} special exception has value of 1
std::exception special exception has value of 1
Matchers.tests.cpp:<line number>:
PASSED:
REQUIRE_THROWS_MATCHES( throws(2), SpecialException, ExceptionMatcher{2} )
with expansion:
{?} special exception has value of 2
std::exception special exception has value of 2
-------------------------------------------------------------------------------
Exception messages can be tested for
@@ -8950,6 +8978,6 @@ Misc.tests.cpp:<line number>:
PASSED:
===============================================================================
test cases: 206 | 140 passed | 62 failed | 4 failed as expected
assertions: 1075 | 933 passed | 121 failed | 21 failed as expected
test cases: 207 | 141 passed | 62 failed | 4 failed as expected
assertions: 1078 | 936 passed | 121 failed | 21 failed as expected