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|
package parser
import (
"regexp"
"testing"
)
func TestRegExp(t *testing.T) {
tt(t, func() {
{
// err
test := func(input string, expect interface{}) {
_, err := TransformRegExp(input)
is(err, expect)
}
test("[", "Unterminated character class")
test("(", "Unterminated group")
test("(?=)", "re2: Invalid (?=) <lookahead>")
test("(?=)", "re2: Invalid (?=) <lookahead>")
test("(?!)", "re2: Invalid (?!) <lookahead>")
// An error anyway
test("(?=", "re2: Invalid (?=) <lookahead>")
test("\\1", "re2: Invalid \\1 <backreference>")
test("\\90", "re2: Invalid \\90 <backreference>")
test("\\9123456789", "re2: Invalid \\9123456789 <backreference>")
test("\\(?=)", "Unmatched ')'")
test(")", "Unmatched ')'")
}
{
// err
test := func(input, expect string, expectErr interface{}) {
output, err := TransformRegExp(input)
is(output, expect)
is(err, expectErr)
}
test("(?!)", "(?!)", "re2: Invalid (?!) <lookahead>")
test(")", "", "Unmatched ')'")
test("(?!))", "", "re2: Invalid (?!) <lookahead>")
test("\\0", "\\0", nil)
test("\\1", "\\1", "re2: Invalid \\1 <backreference>")
test("\\9123456789", "\\9123456789", "re2: Invalid \\9123456789 <backreference>")
}
{
// err
test := func(input string, expect string) {
result, err := TransformRegExp(input)
is(err, nil)
if is(result, expect) {
_, err := regexp.Compile(result)
if !is(err, nil) {
t.Log(result)
}
}
}
test("", "")
test("abc", "abc")
test(`\abc`, `abc`)
test(`\a\b\c`, `a\bc`)
test(`\x`, `x`)
test(`\c`, `c`)
test(`\cA`, `\x01`)
test(`\cz`, `\x1a`)
test(`\ca`, `\x01`)
test(`\cj`, `\x0a`)
test(`\ck`, `\x0b`)
test(`\+`, `\+`)
test(`[\b]`, `[\x08]`)
test(`\u0z01\x\undefined`, `u0z01xundefined`)
test(`\\|'|\r|\n|\t|\u2028|\u2029`, `\\|'|\r|\n|\t|\x{2028}|\x{2029}`)
test("]", "]")
test("}", "}")
test("%", "%")
test("(%)", "(%)")
test("(?:[%\\s])", "(?:[%\\s])")
test("[[]", "[[]")
test("\\101", "\\x41")
test("\\51", "\\x29")
test("\\051", "\\x29")
test("\\175", "\\x7d")
test("\\04", "\\x04")
test(`<%([\s\S]+?)%>`, `<%([\s\S]+?)%>`)
test(`(.)^`, "(.)^")
test(`<%-([\s\S]+?)%>|<%=([\s\S]+?)%>|<%([\s\S]+?)%>|$`, `<%-([\s\S]+?)%>|<%=([\s\S]+?)%>|<%([\s\S]+?)%>|$`)
test(`\$`, `\$`)
test(`[G-b]`, `[G-b]`)
test(`[G-b\0]`, `[G-b\0]`)
}
})
}
func TestTransformRegExp(t *testing.T) {
tt(t, func() {
pattern, err := TransformRegExp(`\s+abc\s+`)
is(err, nil)
is(pattern, `\s+abc\s+`)
is(regexp.MustCompile(pattern).MatchString("\t abc def"), true)
})
}
|
