quotemeta_test.go

// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package onigmo

import "testing"

// Code copied from https://github.com/golang/go/blob/go1.14/src/regexp/all_test.go#L355-L405
type MetaTest struct {
	pattern, output, literal string
	isLiteral                bool
}

var metaTests = []MetaTest{
	{``, ``, ``, true},
	{`foo`, `foo`, `foo`, true},
	{`日本語+`, `日本語\+`, `日本語`, false},
	{`foo\.\$`, `foo\\\.\\\$`, `foo.$`, true}, // has meta but no operator
	{`foo.\$`, `foo\.\\\$`, `foo`, false},     // has escaped operators and real operators
	{`!@#$%^&*()_+-=[{]}\|,<.>/?~`, `!@#\$%\^&\*\(\)_\+-=\[\{\]\}\\\|,<\.>/\?~`, `!@#`, false},
}

func TestQuoteMeta(t *testing.T) {
	for _, tc := range metaTests {
		// Verify that QuoteMeta returns the expected string.
		quoted := QuoteMeta(tc.pattern)
		if quoted != tc.output {
			t.Errorf("QuoteMeta(`%s`) = `%s`; want `%s`",
				tc.pattern, quoted, tc.output)
			continue
		}

		// Verify that the quoted string is in fact treated as expected
		// by Compile -- i.e. that it matches the original, unquoted string.
		if tc.pattern != "" {
			re, err := Compile(quoted)
			if err != nil {
				t.Errorf("Unexpected error compiling QuoteMeta(`%s`): %v", tc.pattern, err)
				continue
			}
			src := "abc" + tc.pattern + "def"
			repl := "xyz"
			replaced := re.ReplaceAllString(src, repl)
			expected := "abcxyzdef"
			if replaced != expected {
				t.Errorf("QuoteMeta(`%s`).Replace(`%s`,`%s`) = `%s`; want `%s`",
					tc.pattern, src, repl, replaced, expected)
			}
		}
	}
}

// End copied code