Luna/tests/libc/TestScanf.cpp

#include <stdio.h>
#include <string.h>
#include <test.h>

// FIXME: Add more tests.

TestResult test_basic_scanf()
{
    char hello[21];
    char world[21];

    int parsed = sscanf("hello world", "%20s %20s", hello, world);
    validate(parsed == 2);

    validate(!strcmp(hello, "hello"));
    validate(!strcmp(world, "world"));

    test_success;
}

TestResult test_incomplete_scanf()
{
    char hello[21];
    char world[21];

    int parsed = sscanf("hello ", "%20s %20s", hello, world);
    validate(parsed == 1);

    validate(!strcmp(hello, "hello"));

    test_success;
}

TestResult test_integer_scanf()
{
    int hour;
    int min;

    int parsed = sscanf("23:59", "%d:%d", &hour, &min);
    validate(parsed == 2);

    validate(hour == 23);
    validate(min == 59);

    test_success;
}

TestResult test_integer_auto_base_scanf()
{
    int a;
    int b;
    int c;

    int parsed = sscanf("65, \t0x23, 0755", "%i, %i, %i", &a, &b, &c);
    validate(parsed == 3);

    validate(a == 65);
    validate(b == 0x23);
    validate(c == 0755);

    test_success;
}

TestResult test_scanf_characters_consumed()
{
    int hour;
    int min;
    int nr_chars;

    int parsed = sscanf("23:59", "%d:%d%n", &hour, &min, &nr_chars);
    validate(parsed == 2);

    validate(hour == 23);
    validate(min == 59);
    validate(nr_chars == 5);

    test_success;
}

Result<void> test_main()
{
    test_prelude;

    run_test(test_basic_scanf);
    run_test(test_incomplete_scanf);
    run_test(test_integer_scanf);
    run_test(test_integer_auto_base_scanf);
    run_test(test_scanf_characters_consumed);

    return {};
}