// Copyright (c) 2019-2023 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.

fn test_strip_margins_no_tabs() {
    no_tabs := ['Hello there', 'This is a string', 'With multiple lines'].join('\n')
    no_tabs_stripped := 'Hello there
                        |This is a string
                        |With multiple lines'.strip_margin()
    assert no_tabs == no_tabs_stripped
}

fn test_strip_margins_text_before() {
    text_before := ['There is text', 'before the delimiter', 'that should be removed as well'].join('\n')
    text_before_stripped := 'There is text
    f lasj  asldfj j lksjdf |before the delimiter
    Which is removed hello  |that should be removed as well'.strip_margin()
    assert text_before_stripped == text_before
}

fn test_strip_margins_white_space_after_delim() {
    tabs := ['    Tab', '    spaces', '    another tab'].join('\n')
    tabs_stripped := '    Tab
                     |    spaces
                     |    another tab'.strip_margin()
    assert tabs == tabs_stripped
}

fn test_strip_margins_alternate_delim() {
    alternate_delimiter := ['This has a different delim,', 'but that is ok',
        'because everything works'].join('\n')
    alternate_delimiter_stripped := 'This has a different delim,
                                    #but that is ok
                                    #because everything works'.strip_margin_custom(`#`)
    assert alternate_delimiter_stripped == alternate_delimiter
}

fn test_strip_margins_multiple_delims_after_first() {
    delim_after_first_instance := ['The delimiter used',
        'only matters the |||| First time it is seen', 'not any | other | times'].join('\n')
    delim_after_first_instance_stripped := 'The delimiter used
                                           |only matters the |||| First time it is seen
                                           |not any | other | times'.strip_margin()
    assert delim_after_first_instance_stripped == delim_after_first_instance
}

fn test_strip_margins_uneven_delims() {
    uneven_delims := ["It doesn't matter if the delims are uneven,",
        'The text will still be delimited correctly.', 'Maybe not everything needs 3 lines?',
        'Let us go for 4 then'].join('\n')
    uneven_delims_stripped := "It doesn't matter if the delims are uneven,
           |The text will still be delimited correctly.
                      |Maybe not everything needs 3 lines?
                |Let us go for 4 then".strip_margin()
    assert uneven_delims_stripped == uneven_delims
}

fn test_strip_margins_multiple_blank_lines() {
    multi_blank_lines := ['Multiple blank lines will be removed.',
        '    I actually consider this a feature.'].join('\n')
    multi_blank_lines_stripped := 'Multiple blank lines will be removed.



        |    I actually consider this a feature.'.strip_margin()
    assert multi_blank_lines == multi_blank_lines_stripped
}

fn test_strip_margins_end_newline() {
    end_with_newline := ['This line will end with a newline', 'Something cool or something.', ''].join('\n')
    end_with_newline_stripped := 'This line will end with a newline
                                 |Something cool or something.

                    '.strip_margin()
    assert end_with_newline_stripped == end_with_newline
}

fn test_strip_margins_space_delimiter() {
    space_delimiter := ['Using a white-space char will', 'revert back to default behavior.'].join('\n')
    space_delimiter_stripped := 'Using a white-space char will
        |revert back to default behavior.'.strip_margin_custom(`\n`)
    assert space_delimiter == space_delimiter_stripped
}

fn test_strip_margins_crlf() {
    crlf := ["This string's line endings have CR as well as LFs.", 'This should pass', 'Definitely'].join('\r\n')
    crlf_stripped := "This string's line endings have CR as well as LFs.\r
                     |This should pass\r
                     |Definitely".strip_margin()

    assert crlf == crlf_stripped
}