~donmcc/astr

ref: a866d791a9ff1b3abd82ac3f25adf37fd8183dbf astr/astr_tests.c -rw-r--r-- 3.7 KiB
a866d791Don McCaughey Added the `astr_cmp()` function for comparing strings. 1 year, 8 months ago
                                                                                
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#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include "astr.h"


static void
test_astr_alloc_empty(void)
{
    char *s = astr_alloc_empty();
    assert(s);
    assert(0 == strlen(s));
    free(s);
}


static void
test_astr_alloc_formatted(void)
{
    char *s = astr_alloc_formatted("answer: %i", 42);
    assert(s);
    assert(10 == strlen(s));
    assert(astr_eq("answer: 42", s));
    free(s);
}


static void
test_astr_alloc_formatted_for_NULL_format(void)
{
    errno = 0;
    char *s = astr_alloc_formatted(NULL);
    assert(!s);
    assert(EINVAL == errno);
    free(s);
}


static void
test_astr_cmp(void)
{
    assert(0 == astr_cmp(NULL, NULL));
    assert(0 == astr_cmp("foo", "foo"));

    assert(astr_cmp(NULL, "") < 0);
    assert(astr_cmp("", NULL) > 0);

    assert(astr_cmp(NULL, "foo") < 0);
    assert(astr_cmp("foo", NULL) > 0);

    assert(astr_cmp("", "foo") < 0);
    assert(astr_cmp("foo", "") > 0);

    assert(astr_cmp("bar", "foo") < 0);
    assert(astr_cmp("foo", "bar") > 0);

    assert(astr_cmp("foo", "foobar") < 0);
    assert(astr_cmp("foobar", "foo") > 0);
}

static void
test_astr_empty(void)
{
    assert(astr_empty(NULL));
    assert(astr_empty(""));
    assert(!astr_empty("foo"));
}


static void
test_astr_eq(void)
{
    char *s = astr_alloc_formatted("foo");

    assert(astr_eq("foo", s));
    assert(!astr_eq(s, "bar"));

    free(s);
}


static void
test_astr_eq_for_NULL_string(void)
{
    char *s = astr_alloc_formatted("foo");

    assert(!astr_eq(s, NULL));
    assert(!astr_eq(NULL, s));
    assert(astr_eq(NULL, NULL));

    free(s);
}


static void
test_astr_eq_for_empty_strings(void)
{
    char *s1 = astr_alloc_empty();
    char *s2 = astr_alloc_empty();

    assert(s1 != s2);
    assert(astr_eq(s1, s2));

    free(s2);
    free(s1);
}


static void
test_astr_formatted_length(void)
{
    errno = 0;
    size_t length = astr_formatted_length("answer: %i", 42);
    assert(10 == length);
    assert(0 == errno);
}


static void
test_astr_formatted_length_for_NULL_format(void)
{
    errno = 0;
    size_t length = astr_formatted_length(NULL);
    assert(0 == length);
    assert(EINVAL == errno);
}


static void
test_astr_realloc_append_formatted(void)
{
    char *s = astr_alloc_formatted("foo");

    int result = astr_realloc_append_formatted(&s, "bar %i", 42);

    assert(0 == result);
    assert(astr_eq("foobar 42", s));
    free(s);
}


static void
test_astr_realloc_append_formatted_for_empty_format(void)
{
    char *s = astr_alloc_formatted("foo");
    char *original_s = s;

    int result = astr_realloc_append_formatted(&s, "");

    assert(0 == result);
    assert(original_s == s);
    assert(astr_eq("foo", s));
    free(s);
}


static void
test_astr_realloc_append_formatted_for_NULL_string(void)
{
    errno = 0;
    int result = astr_realloc_append_formatted(NULL, "foobar");

    assert(-1 == result);
    assert(EINVAL == errno);
}


static void
test_astr_realloc_append_formatted_for_NULL_format(void)
{
    char *s = astr_alloc_formatted("foo");

    errno = 0;
    int result = astr_realloc_append_formatted(&s, NULL);

    assert(-1 == result);
    assert(EINVAL == errno);
    free(s);
}


int
main(int argc, char *argv[])
{
    test_astr_alloc_empty();
    test_astr_alloc_formatted();
    test_astr_alloc_formatted_for_NULL_format();
    test_astr_cmp();
    test_astr_empty();
    test_astr_eq();
    test_astr_eq_for_NULL_string();
    test_astr_eq_for_empty_strings();
    test_astr_formatted_length();
    test_astr_formatted_length_for_NULL_format();
    test_astr_realloc_append_formatted_for_empty_format();
    test_astr_realloc_append_formatted_for_NULL_string();
    test_astr_realloc_append_formatted_for_NULL_format();
    return EXIT_SUCCESS;
}