module document

import os

fn testsuite_begin() {
    os.chdir(@VMODROOT) or {}
    eprintln('>> @VMODROOT: ' + @VMODROOT)
}

fn test_get_parent_mod_on_root_folder() {
    // TODO: add an equivalent windows check for c:\
    $if !windows {
        assert '---' == get_parent_mod('/') or {
            assert err.msg() == 'root folder reached'
            '---'
        }
    }
}

fn test_get_parent_mod_current_folder() {
    // TODO: this should may be return '' reliably on windows too:
    // assert '' == get_parent_mod('.') or {
    //    assert err.msg() == 'No V files found.'
    //    '---'
    // }
}

fn test_get_parent_mod_on_temp_dir() {
    // TODO: fix this on windows
    $if !windows {
        assert get_parent_mod(os.temp_dir())! == ''
    }
}

fn test_get_parent_mod_normal_cases() {
    assert '---' == get_parent_mod(os.join_path(@VMODROOT, 'vlib/v')) or {
        assert err.msg() == 'No V files found.'
        '---'
    }
    assert get_parent_mod(os.join_path(@VMODROOT, 'vlib', 'v', 'token'))! == 'v'
    assert get_parent_mod(os.join_path(@VMODROOT, 'vlib', 'os', 'os.v'))! == 'os'
    assert get_parent_mod(os.join_path(@VMODROOT, 'cmd'))! == ''
    assert get_parent_mod(os.join_path(@VMODROOT, 'cmd', 'tools', 'modules', 'testing', 'common.v'))! == 'tools.modules.testing'
}