catch_unittest_example

.gitignore

catch.hpp

README.md

Usage

make

Output

g++ to_test.cpp pass_tests.cpp -o pass_tests && ./pass_tests && rm pass_tests
===============================================================================
All tests passed (2 assertions in 1 test case)

g++ to_test.cpp fail_tests.cpp -o fail_tests && ./fail_tests && rm fail_tests

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fail_tests is a Catch v1.5.7 host application.
Run with -? for options

-------------------------------------------------------------------------------
Factorials are computed
-------------------------------------------------------------------------------
fail_tests.cpp:6
...............................................................................

fail_tests.cpp:8: FAILED:
  REQUIRE( Factorial(3) == 10 )
with expansion:
  6 == 10

===============================================================================
test cases: 1 | 1 failed
assertions: 2 | 1 passed | 1 failed

fail_tests.cpp

#define CATCH_CONFIG_MAIN
#include "catch.hpp"

#include "to_test.hpp"

TEST_CASE( "Factorials are computed", "[factorial]"  ){
    REQUIRE( Factorial(1) == 1 );
    REQUIRE( Factorial(3) == 10 );
}

Makefile

CC = g++

PASSTEST=pass_tests
FAILTEST=fail_tests

test:
	[ -f catch.hpp ] || wget https://raw.githubusercontent.com/philsquared/Catch/master/single_include/catch.hpp
	$(CC) to_test.cpp $(PASSTEST).cpp -o $(PASSTEST) && ./$(PASSTEST) && rm $(PASSTEST)
	$(CC) to_test.cpp $(FAILTEST).cpp -o $(FAILTEST) && ./$(FAILTEST) && rm $(FAILTEST)

pass_tests.cpp

#define CATCH_CONFIG_MAIN
#include "catch.hpp"

#include "to_test.hpp"

TEST_CASE( "Factorials are computed", "[factorial]"  ){
    REQUIRE( Factorial(1) == 1 );
    REQUIRE( Factorial(3) == 6 );
}

to_test.cpp

// https://github.com/philsquared/Catch/blob/master/docs/tutorial.md
#include "to_test.hpp"

unsigned int Factorial( unsigned int number) {
    return number <= 1 ? number: Factorial(number-1)*number;
}

to_test.hpp

unsigned int Factorial( unsigned int number);