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v/vlib/builtin/string_match_glob_test.v

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import time
fn test_match_glob_on_empty_string() {
assert ''.match_glob('')
assert !''.match_glob('x')
}
fn test_match_glob_on_x() {
assert !'x'.match_glob('')
assert 'x'.match_glob('x')
assert 'xxx'.match_glob('*x')
assert 'xxx'.match_glob('x*')
}
fn test_match_glob_on_abc() {
assert !'abc'.match_glob('')
assert 'abc'.match_glob('*')
//
assert !'abc'.match_glob('ab')
assert 'abc'.match_glob('abc')
assert 'abc'.match_glob('abc*')
//
assert 'abc'.match_glob('*c')
assert !'abc'.match_glob('*b')
assert 'abc'.match_glob('*bc')
assert 'abc'.match_glob('*abc')
//
assert 'abc'.match_glob('a*')
assert !'abc'.match_glob('b*')
assert 'abc'.match_glob('a*c')
//
assert 'abc'.match_glob('ab?')
assert 'abc'.match_glob('a??')
assert 'abc'.match_glob('???')
assert !'abc'.match_glob('??')
assert !'abc'.match_glob('?')
}
fn test_match_glob_on_a() {
assert 'a'.match_glob('a')
assert 'a'.match_glob('?')
assert !'a'.match_glob('??')
assert 'a'.match_glob('*')
assert 'a'.match_glob('a*')
assert 'a'.match_glob('*a')
}
fn test_match_glob_with_any_charset_patterns() {
assert 'axbxcxdxe'.match_glob('*c[xyz]d*')
assert 'axbxcxdxe'.match_glob('*c[yxz]d*')
assert 'axbxcxdxe'.match_glob('*c[zyx]d*')
//
assert 'axbxcxdxe'.match_glob('*dx[QeW]')
assert 'axbxcxdxe'.match_glob('*dx[QeW]*')
//
assert !'axbxcxdxe'.match_glob('*bx[QcW]')
assert 'axbxcxdxe'.match_glob('*bx[QcW]*')
//
assert !'axbxcxdxe'.match_glob('*zx[QeW]')
assert !'axbxcxdxe'.match_glob('*zx[QeW]*')
}
fn test_match_glob_with_none_of_charset_patterns() {
assert 'axbxcxdxe'.match_glob('*c[^XYZ]d*')
assert !'axbxcxdxe'.match_glob('*c[^xYZ]d*')
assert !'axbxcxdxe'.match_glob('*c[^YxZ]d*')
assert !'axbxcxdxe'.match_glob('*c[^YZx]d*')
}
fn test_match_glob_with_escaped_metachars() {
assert 'axbx?cxdxe'.match_glob('*x[?]c*')
assert !'axbxXcxdxe'.match_glob('*x[?]c*')
assert 'zaxbx*cxdxez'.match_glob('*x[Q*W]c*')
assert 'zaxbx*cxdxez'.match_glob('*x[QW*]c*')
assert 'zaxbx*cxdxez'.match_glob('*bx[*QW]c*')
assert 'zaxbW*cxdxez'.match_glob('*W[*nmk]c*')
assert 'zaxbW*cxdxez'.match_glob('*W[n*mk]c*')
assert 'zaxbW*cxdxez'.match_glob('*W[nm*k]c*')
assert 'zaxbW*cxdxez'.match_glob('*W[nmk*]c*')
}
fn test_match_glob_with_complex_patterns() {
assert 'axbxcxdxe'.match_glob('*xdx*')
assert !'axbxcxdxe'.match_glob('*xzx*')
assert 'axbxcxdxe'.match_glob('a*b*c*d*e*')
assert 'axbxcxdxexxx'.match_glob('a*b*c*d*e*')
assert 'abxbbxdbxebxczzx'.match_glob('a*b?c*x')
assert !'abxbbxdbxebxczzy'.match_glob('a*b?c*x')
}
fn test_match_glob_search_is_linear() {
// NB: these are pathological cases, when matches are performed
// using the exponential recursive approach, that can take many
// seconds, even minutes, but take usually only microseconds,
// using the linear approach from https://research.swtch.com/glob
// that does not backtrack.
long_a := 'a'.repeat(500)
sw := time.new_stopwatch()
assert !long_a.match_glob('a*a*a*a*b')
assert sw.elapsed().milliseconds() < 10
assert !long_a.match_glob('a*a*a*a*a*a*a*a*a*b')
assert sw.elapsed().milliseconds() < 10
}