module pind.samples.ja.unit_testing.unit_testing_2;

import std.string;

string ordinal(size_t number) {
    string suffix;

    switch (number) {
    case  1: suffix = "st"; break;
    case  2: suffix = "nd"; break;
    case  3: suffix = "rd"; break;
    default: suffix = "th"; break;
    }

    return format("%s%s", number, suffix);
}

unittest {
    assert(ordinal(1) == "1st");
    assert(ordinal(2) == "2nd");
    assert(ordinal(3) == "3rd");
    assert(ordinal(10) == "10th");
}

void main() {
}