v/vlib/builtin/string_strip_margin_test.v

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// Copyright (c) 2019-2020 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(`#`)
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(`\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
}