Cgreen floating point mock test

96.c

#include <cgreen/cgreen.h>
#include <cgreen/mocks.h>

double foobar(void) {return (double)mock();}
double test_func(void)
{
    return foobar();
}

Ensure(foobar_returns_floating_point_from_literal)
{
    // Mock actually returns integer "282"
    expect(foobar, will_return(282.4));
    assert_that_double(test_func(), is_equal_to_double(282.4));
}

Ensure(foobar_returns_floating_point_from_variable)
{
    double return_value=282.4;

    // Mock actually returns integer "282"
    expect(foobar, will_return(return_value));
    assert_that_double(test_func(), is_equal_to_double(282.4));
}

uint8_t foobar_param(const double bob) {return (uint8_t)mock(bob);}
uint8_t test_func_param(void)
{
    return foobar_param(17.1);
}

Ensure(foobar_param_doesnt_segfault)
{
    // Mock segfaults for floating point parameter?
    expect(foobar_param, will_return(7U), when(bob, is_equal_to_double(17.1)));
    assert_that(test_func_param(), is_equal_to(7U));
}

int main(int argc, char **argv)
{
    TestSuite *suite = create_named_test_suite("floating point mock test");
    add_test(suite, foobar_returns_floating_point_from_literal);
    add_test(suite, foobar_param_doesnt_segfault);
    return run_test_suite(suite, create_text_reporter());
}

96_hacked.c

#include <cgreen/cgreen.h>
#include <cgreen/mocks.h>

double foobar(void) {return (double)unbox_double(mock());}
double test_func(void)
{
    return foobar();
}

Ensure(foobar_returns_floating_point)
{
    // Mock actually returns integer "282"
    expect(foobar, will_return(box_double(282.4)));
    assert_that_double(test_func(), is_equal_to_double(282.4));
}

uint8_t foobar_param(const double bob) {return (uint8_t)mock(box_double(bob));}
uint8_t test_func_param(void)
{
    return foobar_param(17.1);
}

Ensure(foobar_param_doesnt_segfault)
{
    // Mock segfaults for floating point parameter?
    expect(foobar_param, will_return(7U), when(bob, is_equal_to_double(17.1)));
    assert_that(test_func_param(), is_equal_to(7U));
}

int main(int argc, char **argv)
{
    TestSuite *suite = create_named_test_suite("floating point mock test");
    add_test(suite, foobar_returns_floating_point);
    add_test(suite, foobar_param_doesnt_segfault);
    return run_test_suite(suite, create_text_reporter());
}

Makefile

CFLAGS=-I/usr/local/include -g -O0

all: 96
	LD_LIBRARY_PATH=/usr/local/lib ./96

96: 96.o
	gcc -o $@ $^ -L/usr/local/lib -lcgreen