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Add a matcher that checks exception's message
Only works for exceptions that publicly derive from `std::exception` and the matching is done exactly, including case and whitespace. Closes #1649 Closes #1728 # Please enter the commit message for your changes. Lines starting # with '#' will be ignored, and an empty message aborts the commit. # On branch master # Your branch is up-to-date with 'origin/master'. # # Changes to be committed: # modified: ../docs/matchers.md # modified: ../include/internal/catch_capture_matchers.h # modified: ../projects/CMakeLists.txt # modified: ../projects/SelfTest/Baselines/compact.sw.approved.txt # modified: ../projects/SelfTest/Baselines/console.std.approved.txt # modified: ../projects/SelfTest/Baselines/console.sw.approved.txt # modified: ../projects/SelfTest/Baselines/junit.sw.approved.txt # modified: ../projects/SelfTest/Baselines/xml.sw.approved.txt # modified: ../projects/SelfTest/UsageTests/Matchers.tests.cpp # # Untracked files: # ./ # ../clang-full/ # ../clang-test/ # ../clang10-build/ # ../coverage-build/ # ../gcc-build/ # ../gcc-full/ # ../include/internal/catch_matchers_exception.cpp # ../include/internal/catch_matchers_exception.hpp # ../misc-build/ # ../msvc-sln/ # ../notes.txt # ../test-install/ #
This commit is contained in:
Martin Hořeňovský
parent
28663fb959
commit
2cc0c71856
@ -81,6 +81,22 @@ The second argument is an optional description of the predicate, and is
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used only during reporting of the result.
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### Exception matchers
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Catch2 also provides an exception matcher that can be used to verify
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that an exception's message exactly matches desired string. The matcher
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is `ExceptionMessageMatcher`, and we also provide a helper function
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`Message`.
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The matched exception must publicly derive from `std::exception` and
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the message matching is done _exactly_, including case.
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> `ExceptionMessageMatcher` was introduced in Catch X.Y.Z
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Example use:
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```cpp
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REQUIRE_THROWS_MATCHES(throwsDerivedException(), DerivedException, Message("DerivedException::what"));
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```
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## Custom matchers
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It's easy to provide your own matchers to extend Catch or just to work with your own types.
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@ -10,6 +10,7 @@
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#include "catch_capture.hpp"
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#include "catch_matchers.h"
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#include "catch_matchers_exception.hpp"
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#include "catch_matchers_floating.h"
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#include "catch_matchers_generic.hpp"
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#include "catch_matchers_string.h"
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30
include/internal/catch_matchers_exception.cpp
Normal file
30
include/internal/catch_matchers_exception.cpp
Normal file
@ -0,0 +1,30 @@
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/*
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* Created by Martin Hořeňovský on 13/10/2019.
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*
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* Distributed under the Boost Software License, Version 1.0. (See accompanying
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* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#include "catch_matchers_exception.hpp"
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namespace Catch {
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namespace Matchers {
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namespace Exception {
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bool ExceptionMessageMatcher::match(std::exception const& ex) const {
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return ex.what() == m_message;
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}
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std::string ExceptionMessageMatcher::describe() const {
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return "exception message matches \"" + m_message + "\"";
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}
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}
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Exception::ExceptionMessageMatcher Message(std::string const& message) {
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return Exception::ExceptionMessageMatcher(message);
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}
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// namespace Exception
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} // namespace Matchers
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} // namespace Catch
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39
include/internal/catch_matchers_exception.hpp
Normal file
39
include/internal/catch_matchers_exception.hpp
Normal file
@ -0,0 +1,39 @@
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/*
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* Created by Martin Hořeňovský on 13/10/2019.
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*
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* Distributed under the Boost Software License, Version 1.0. (See accompanying
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* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#ifndef TWOBLUECUBES_CATCH_MATCHERS_EXCEPTION_HPP_INCLUDED
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#define TWOBLUECUBES_CATCH_MATCHERS_EXCEPTION_HPP_INCLUDED
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#include "catch_matchers.h"
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#include <functional>
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#include <string>
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namespace Catch {
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namespace Matchers {
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namespace Exception {
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class ExceptionMessageMatcher : public MatcherBase<std::exception> {
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std::string m_message;
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public:
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ExceptionMessageMatcher(std::string const& message):
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m_message(message)
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{}
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bool match(std::exception const& ex) const override;
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std::string describe() const override;
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};
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} // namespace Exception
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Exception::ExceptionMessageMatcher Message(std::string const& message);
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} // namespace Matchers
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} // namespace Catch
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#endif // TWOBLUECUBES_CATCH_MATCHERS_EXCEPTION_HPP_INCLUDED
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@ -151,6 +151,7 @@ set(INTERNAL_HEADERS
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${HEADER_DIR}/internal/catch_leak_detector.h
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${HEADER_DIR}/internal/catch_list.h
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${HEADER_DIR}/internal/catch_matchers.h
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${HEADER_DIR}/internal/catch_matchers_exception.hpp
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${HEADER_DIR}/internal/catch_matchers_floating.h
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${HEADER_DIR}/internal/catch_matchers_generic.hpp
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${HEADER_DIR}/internal/catch_matchers_string.h
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@ -229,6 +230,7 @@ set(IMPL_SOURCES
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${HEADER_DIR}/internal/catch_list.cpp
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${HEADER_DIR}/internal/catch_leak_detector.cpp
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${HEADER_DIR}/internal/catch_matchers.cpp
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${HEADER_DIR}/internal/catch_matchers_exception.cpp
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${HEADER_DIR}/internal/catch_matchers_floating.cpp
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${HEADER_DIR}/internal/catch_matchers_generic.cpp
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${HEADER_DIR}/internal/catch_matchers_string.cpp
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@ -385,16 +385,20 @@ Matchers.tests.cpp:<line number>: failed: expected exception, got none; expressi
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Matchers.tests.cpp:<line number>: failed: expected exception, got none; expression was: doesNotThrow(), SpecialException, ExceptionMatcher{1}
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Matchers.tests.cpp:<line number>: failed: unexpected exception with message: 'Unknown exception'; expression was: throwsAsInt(1), SpecialException, ExceptionMatcher{1}
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Matchers.tests.cpp:<line number>: failed: unexpected exception with message: 'Unknown exception'; expression was: throwsAsInt(1), SpecialException, ExceptionMatcher{1}
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Matchers.tests.cpp:<line number>: failed: throws(3), SpecialException, ExceptionMatcher{1} for: SpecialException::what special exception has value of 1
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Matchers.tests.cpp:<line number>: failed: throws(4), SpecialException, ExceptionMatcher{1} for: SpecialException::what special exception has value of 1
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Matchers.tests.cpp:<line number>: passed: throws(1), SpecialException, ExceptionMatcher{1} for: SpecialException::what special exception has value of 1
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Matchers.tests.cpp:<line number>: passed: throws(2), SpecialException, ExceptionMatcher{2} for: SpecialException::what special exception has value of 2
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Matchers.tests.cpp:<line number>: failed: throwsSpecialException(3), SpecialException, ExceptionMatcher{1} for: SpecialException::what special exception has value of 1
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Matchers.tests.cpp:<line number>: failed: throwsSpecialException(4), SpecialException, ExceptionMatcher{1} for: SpecialException::what special exception has value of 1
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Matchers.tests.cpp:<line number>: passed: throwsSpecialException(1), SpecialException, ExceptionMatcher{1} for: SpecialException::what special exception has value of 1
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Matchers.tests.cpp:<line number>: passed: throwsSpecialException(2), SpecialException, ExceptionMatcher{2} for: SpecialException::what special exception has value of 2
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Exception.tests.cpp:<line number>: passed: thisThrows(), "expected exception" for: "expected exception" equals: "expected exception"
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Exception.tests.cpp:<line number>: passed: thisThrows(), Equals( "expecteD Exception", Catch::CaseSensitive::No ) for: "expected exception" equals: "expected exception" (case insensitive)
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Exception.tests.cpp:<line number>: passed: thisThrows(), StartsWith( "expected" ) for: "expected exception" starts with: "expected"
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Exception.tests.cpp:<line number>: passed: thisThrows(), EndsWith( "exception" ) for: "expected exception" ends with: "exception"
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Exception.tests.cpp:<line number>: passed: thisThrows(), Contains( "except" ) for: "expected exception" contains: "except"
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Exception.tests.cpp:<line number>: passed: thisThrows(), Contains( "exCept", Catch::CaseSensitive::No ) for: "expected exception" contains: "except" (case insensitive)
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Matchers.tests.cpp:<line number>: passed: throwsDerivedException(), DerivedException, Message("DerivedException::what") for: DerivedException::what
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Matchers.tests.cpp:<line number>: passed: throwsDerivedException(), DerivedException, !Message("derivedexception::what") for: DerivedException::what not
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Matchers.tests.cpp:<line number>: passed: throwsSpecialException(2), SpecialException, !Message("DerivedException::what") for: SpecialException::what not
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Matchers.tests.cpp:<line number>: passed: throwsSpecialException(2), SpecialException, Message("SpecialException::what") for: SpecialException::what
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Exception.tests.cpp:<line number>: failed: unexpected exception with message: 'expected exception'; expression was: thisThrows(), std::string
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Exception.tests.cpp:<line number>: failed: expected exception, got none; expression was: thisDoesntThrow(), std::domain_error
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Exception.tests.cpp:<line number>: failed: unexpected exception with message: 'expected exception'; expression was: thisThrows()
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@ -520,12 +520,12 @@ Matchers.tests.cpp:<line number>
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...............................................................................
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Matchers.tests.cpp:<line number>: FAILED:
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CHECK_THROWS_MATCHES( throws(3), SpecialException, ExceptionMatcher{1} )
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CHECK_THROWS_MATCHES( throwsSpecialException(3), SpecialException, ExceptionMatcher{1} )
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with expansion:
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SpecialException::what special exception has value of 1
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Matchers.tests.cpp:<line number>: FAILED:
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REQUIRE_THROWS_MATCHES( throws(4), SpecialException, ExceptionMatcher{1} )
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REQUIRE_THROWS_MATCHES( throwsSpecialException(4), SpecialException, ExceptionMatcher{1} )
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with expansion:
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SpecialException::what special exception has value of 1
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@ -1380,6 +1380,6 @@ due to unexpected exception with message:
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Why would you throw a std::string?
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===============================================================================
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test cases: 303 | 229 passed | 70 failed | 4 failed as expected
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assertions: 1615 | 1463 passed | 131 failed | 21 failed as expected
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test cases: 304 | 230 passed | 70 failed | 4 failed as expected
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assertions: 1619 | 1467 passed | 131 failed | 21 failed as expected
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@ -2930,12 +2930,12 @@ Matchers.tests.cpp:<line number>
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...............................................................................
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Matchers.tests.cpp:<line number>: FAILED:
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CHECK_THROWS_MATCHES( throws(3), SpecialException, ExceptionMatcher{1} )
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CHECK_THROWS_MATCHES( throwsSpecialException(3), SpecialException, ExceptionMatcher{1} )
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with expansion:
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SpecialException::what special exception has value of 1
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Matchers.tests.cpp:<line number>: FAILED:
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REQUIRE_THROWS_MATCHES( throws(4), SpecialException, ExceptionMatcher{1} )
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REQUIRE_THROWS_MATCHES( throwsSpecialException(4), SpecialException, ExceptionMatcher{1} )
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with expansion:
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SpecialException::what special exception has value of 1
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@ -2946,12 +2946,12 @@ Matchers.tests.cpp:<line number>
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...............................................................................
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Matchers.tests.cpp:<line number>: PASSED:
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CHECK_THROWS_MATCHES( throws(1), SpecialException, ExceptionMatcher{1} )
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CHECK_THROWS_MATCHES( throwsSpecialException(1), SpecialException, ExceptionMatcher{1} )
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with expansion:
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SpecialException::what special exception has value of 1
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Matchers.tests.cpp:<line number>: PASSED:
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REQUIRE_THROWS_MATCHES( throws(2), SpecialException, ExceptionMatcher{2} )
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REQUIRE_THROWS_MATCHES( throwsSpecialException(2), SpecialException, ExceptionMatcher{2} )
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with expansion:
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SpecialException::what special exception has value of 2
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@ -3006,6 +3006,32 @@ Exception.tests.cpp:<line number>: PASSED:
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with expansion:
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"expected exception" contains: "except" (case insensitive)
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-------------------------------------------------------------------------------
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Exceptions matchers
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-------------------------------------------------------------------------------
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Matchers.tests.cpp:<line number>
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...............................................................................
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Matchers.tests.cpp:<line number>: PASSED:
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REQUIRE_THROWS_MATCHES( throwsDerivedException(), DerivedException, Message("DerivedException::what") )
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with expansion:
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DerivedException::what
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Matchers.tests.cpp:<line number>: PASSED:
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REQUIRE_THROWS_MATCHES( throwsDerivedException(), DerivedException, !Message("derivedexception::what") )
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with expansion:
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DerivedException::what not
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Matchers.tests.cpp:<line number>: PASSED:
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REQUIRE_THROWS_MATCHES( throwsSpecialException(2), SpecialException, !Message("DerivedException::what") )
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with expansion:
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SpecialException::what not
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Matchers.tests.cpp:<line number>: PASSED:
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REQUIRE_THROWS_MATCHES( throwsSpecialException(2), SpecialException, Message("SpecialException::what") )
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with expansion:
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SpecialException::what
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-------------------------------------------------------------------------------
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Expected exceptions that don't throw or unexpected exceptions fail the test
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-------------------------------------------------------------------------------
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@ -12913,6 +12939,6 @@ Misc.tests.cpp:<line number>
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Misc.tests.cpp:<line number>: PASSED:
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===============================================================================
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test cases: 303 | 213 passed | 86 failed | 4 failed as expected
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assertions: 1632 | 1463 passed | 148 failed | 21 failed as expected
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test cases: 304 | 214 passed | 86 failed | 4 failed as expected
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assertions: 1636 | 1467 passed | 148 failed | 21 failed as expected
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@ -1,7 +1,7 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<testsuitesloose text artifact
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>
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<testsuite name="<exe-name>" errors="17" failures="132" tests="1633" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
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<testsuite name="<exe-name>" errors="17" failures="132" tests="1637" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
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<properties>
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<property name="filters" value="~[!nonportable]~[!benchmark]~[approvals]"/>
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<property name="random-seed" value="1"/>
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@ -371,6 +371,7 @@ Matchers.tests.cpp:<line number>
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<testcase classname="<exe-name>.global" name="Exception messages can be tested for/exact match" time="{duration}"/>
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<testcase classname="<exe-name>.global" name="Exception messages can be tested for/different case" time="{duration}"/>
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<testcase classname="<exe-name>.global" name="Exception messages can be tested for/wildcarded" time="{duration}"/>
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<testcase classname="<exe-name>.global" name="Exceptions matchers" time="{duration}"/>
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<testcase classname="<exe-name>.global" name="Expected exceptions that don't throw or unexpected exceptions fail the test" time="{duration}">
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<error message="thisThrows(), std::string" type="CHECK_THROWS_AS">
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expected exception
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@ -3464,7 +3464,7 @@ Nor would this
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<Section name="Contents are wrong" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Expression success="false" type="CHECK_THROWS_MATCHES" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Original>
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throws(3), SpecialException, ExceptionMatcher{1}
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throwsSpecialException(3), SpecialException, ExceptionMatcher{1}
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</Original>
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<Expanded>
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SpecialException::what special exception has value of 1
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@ -3472,7 +3472,7 @@ Nor would this
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</Expression>
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<Expression success="false" type="REQUIRE_THROWS_MATCHES" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Original>
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throws(4), SpecialException, ExceptionMatcher{1}
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throwsSpecialException(4), SpecialException, ExceptionMatcher{1}
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</Original>
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<Expanded>
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SpecialException::what special exception has value of 1
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@ -3485,7 +3485,7 @@ Nor would this
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<TestCase name="Exception matchers that succeed" tags="[!throws][exceptions][matchers]" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Expression success="true" type="CHECK_THROWS_MATCHES" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Original>
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throws(1), SpecialException, ExceptionMatcher{1}
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throwsSpecialException(1), SpecialException, ExceptionMatcher{1}
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</Original>
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<Expanded>
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SpecialException::what special exception has value of 1
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@ -3493,7 +3493,7 @@ Nor would this
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</Expression>
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<Expression success="true" type="REQUIRE_THROWS_MATCHES" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Original>
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throws(2), SpecialException, ExceptionMatcher{2}
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throwsSpecialException(2), SpecialException, ExceptionMatcher{2}
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</Original>
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<Expanded>
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SpecialException::what special exception has value of 2
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@ -3561,6 +3561,41 @@ Nor would this
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</Section>
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<OverallResult success="true"/>
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</TestCase>
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<TestCase name="Exceptions matchers" tags="[!throws][exceptions][matchers]" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Expression success="true" type="REQUIRE_THROWS_MATCHES" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Original>
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throwsDerivedException(), DerivedException, Message("DerivedException::what")
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</Original>
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<Expanded>
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DerivedException::what
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</Expanded>
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</Expression>
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<Expression success="true" type="REQUIRE_THROWS_MATCHES" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Original>
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throwsDerivedException(), DerivedException, !Message("derivedexception::what")
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</Original>
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<Expanded>
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DerivedException::what not
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</Expanded>
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</Expression>
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<Expression success="true" type="REQUIRE_THROWS_MATCHES" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Original>
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throwsSpecialException(2), SpecialException, !Message("DerivedException::what")
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</Original>
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<Expanded>
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SpecialException::what not
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</Expanded>
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</Expression>
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<Expression success="true" type="REQUIRE_THROWS_MATCHES" filename="projects/<exe-name>/UsageTests/Matchers.tests.cpp" >
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<Original>
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throwsSpecialException(2), SpecialException, Message("SpecialException::what")
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</Original>
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<Expanded>
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SpecialException::what
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</Expanded>
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</Expression>
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<OverallResult success="true"/>
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</TestCase>
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<TestCase name="Expected exceptions that don't throw or unexpected exceptions fail the test" tags="[!throws][.][failing]" filename="projects/<exe-name>/UsageTests/Exception.tests.cpp" >
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<Expression success="false" type="CHECK_THROWS_AS" filename="projects/<exe-name>/UsageTests/Exception.tests.cpp" >
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<Original>
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@ -15376,7 +15411,7 @@ loose text artifact
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</Section>
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<OverallResult success="true"/>
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</TestCase>
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<OverallResults successes="1463" failures="149" expectedFailures="21"/>
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<OverallResults successes="1467" failures="149" expectedFailures="21"/>
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</Group>
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<OverallResults successes="1463" failures="148" expectedFailures="21"/>
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<OverallResults successes="1467" failures="148" expectedFailures="21"/>
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</Catch>
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@ -52,10 +52,16 @@ namespace { namespace MatchersTests {
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int i;
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};
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struct DerivedException : std::exception {
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char const* what() const noexcept override {
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return "DerivedException::what";
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}
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};
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void doesNotThrow() {}
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[[noreturn]]
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void throws(int i) {
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void throwsSpecialException(int i) {
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throw SpecialException{i};
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}
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@ -64,6 +70,11 @@ namespace { namespace MatchersTests {
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throw i;
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}
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[[noreturn]]
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void throwsDerivedException() {
|
||||
throw DerivedException{};
|
||||
}
|
||||
|
||||
class ExceptionMatcher : public Catch::MatcherBase<SpecialException> {
|
||||
int m_expected;
|
||||
public:
|
||||
@ -319,8 +330,8 @@ namespace { namespace MatchersTests {
|
||||
}
|
||||
|
||||
TEST_CASE("Exception matchers that succeed", "[matchers][exceptions][!throws]") {
|
||||
CHECK_THROWS_MATCHES(throws(1), SpecialException, ExceptionMatcher{1});
|
||||
REQUIRE_THROWS_MATCHES(throws(2), SpecialException, ExceptionMatcher{2});
|
||||
CHECK_THROWS_MATCHES(throwsSpecialException(1), SpecialException, ExceptionMatcher{1});
|
||||
REQUIRE_THROWS_MATCHES(throwsSpecialException(2), SpecialException, ExceptionMatcher{2});
|
||||
}
|
||||
|
||||
TEST_CASE("Exception matchers that fail", "[matchers][exceptions][!throws][.failing]") {
|
||||
@ -333,8 +344,8 @@ namespace { namespace MatchersTests {
|
||||
REQUIRE_THROWS_MATCHES(throwsAsInt(1), SpecialException, ExceptionMatcher{1});
|
||||
}
|
||||
SECTION("Contents are wrong") {
|
||||
CHECK_THROWS_MATCHES(throws(3), SpecialException, ExceptionMatcher{1});
|
||||
REQUIRE_THROWS_MATCHES(throws(4), SpecialException, ExceptionMatcher{1});
|
||||
CHECK_THROWS_MATCHES(throwsSpecialException(3), SpecialException, ExceptionMatcher{1});
|
||||
REQUIRE_THROWS_MATCHES(throwsSpecialException(4), SpecialException, ExceptionMatcher{1});
|
||||
}
|
||||
}
|
||||
|
||||
@ -533,6 +544,13 @@ namespace { namespace MatchersTests {
|
||||
}
|
||||
}
|
||||
|
||||
TEST_CASE("Exceptions matchers", "[matchers][exceptions][!throws]") {
|
||||
REQUIRE_THROWS_MATCHES(throwsDerivedException(), DerivedException, Message("DerivedException::what"));
|
||||
REQUIRE_THROWS_MATCHES(throwsDerivedException(), DerivedException, !Message("derivedexception::what"));
|
||||
REQUIRE_THROWS_MATCHES(throwsSpecialException(2), SpecialException, !Message("DerivedException::what"));
|
||||
REQUIRE_THROWS_MATCHES(throwsSpecialException(2), SpecialException, Message("SpecialException::what"));
|
||||
}
|
||||
|
||||
} } // namespace MatchersTests
|
||||
|
||||
#endif // CATCH_CONFIG_DISABLE_MATCHERS
|
||||
|
||||
Loading…
Reference in New Issue
Block a user