A bug that execute an expression in assertion macro twice instead of once

[Thecarisma]

Bug Reproduction

#include <stdio.h>
#include <exotic/cester.h>

CESTER_BODY(
int global_size = 1;
int size() {
    printf("Getting size %d\n", global_size);
    global_size++;
    return global_size;
}
)

CESTER_TEST(test_init_set, _, {
    cester_assert_int_eq(size(), 1);
})

CESTER_OPTIONS(
    CESTER_VERBOSE_LEVEL(2);
)

Notice it prints out "Getting size X" more than once

[Thecarisma]

This appears to occur when cester tries to get the actual expression value for printing it re-evaluates the expression. The solution is to get the evaluation result from the first assertion check

[Thecarisma]

Fixed in the PR #32