This tiny C++11 test helper is based on ideas and examples by Kevlin Henney [1,2] and on ideas found in the CATCH test framework by Phil Nash [3].
Let writing tests become irresistibly easy and attractive.
#include "lest.hpp"
using namespace std;
const lest::test specification[] =
{
"Empty string has length zero (succeed)", []()
{
EXPECT( 0 == string( ).length() );
EXPECT( 0 == string("").length() );
},
"Text compares lexically (fail)", []()
{
EXPECT( string("hello") > string("world") );
},
"Unexpected exception is reported", []()
{
EXPECT( (throw std::runtime_error("surprise!"), true) );
},
"Unspecified expected exception is captured", []()
{
EXPECT_THROWS( (throw std::runtime_error("surprise!"), true) );
},
"Specified expected exception is captured", []()
{
EXPECT_THROWS_AS( (throw std::bad_alloc(), true), std::bad_alloc );
},
"Expected exception is reported missing", []()
{
EXPECT_THROWS( true );
},
"Specific expected exception is reported missing", []()
{
EXPECT_THROWS_AS( true, std::runtime_error );
},
};
int main()
{
return lest::run( specification );
}prompt>g++ -Wall -Wextra -Weffc++ -std=c++11 -o example1.exe example1.cpp && example1
example1.cpp:16: failed: Text compares lexically (fail): string("hello") > string("world")
example1.cpp:21: failed: got unexpected exception with message "surprise!": Unexpected exception is reported: (throw std::runtime_error("surprise!"), true)
example1.cpp:36: failed: didn't get exception: Expected exception is reported missing: true
example1.cpp:41: failed: didn't get exception of type std::runtime_error: Specific expected exception is reported missing: true
4 out of 7 tests failed.
- g++ 4.8.1
- clang 3.2
- Visual Studio 2013 preview
[1] Kevlin Henney on Rethinking Unit Testing in C++ (Video).
[2] Martin Moene. Elefant C++11 test setup on the ACCU mailing list accu-general (requires login). It mentions the C++11 test appoach Andrzej Krzemieński uses for Optional. A library for optional (nullable) objects for C++11.
[3] Phil Nash. CATCH, an automated test framework for C, C++ and Objective-C.
[4] A more technically informed name: lest - lambda engaged small tester.
