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// Copyright 2020 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 syntax
import (
"fmt"
"regexp"
"strings"
"testing"
)
func TestCommentMap(t *testing.T) {
const src = `/* ERROR "0:0" */ /* ERROR "0:0" */ // ERROR "0:0"
// ERROR "0:0"
x /* ERROR "3:1" */ // ignore automatically inserted semicolon here
/* ERROR "3:1" */ // position of x on previous line
x /* ERROR "5:4" */ ; // do not ignore this semicolon
/* ERROR "5:24" */ // position of ; on previous line
package /* ERROR "7:2" */ // indented with tab
import /* ERROR "8:9" */ // indented with blanks
`
m := CommentMap(strings.NewReader(src), regexp.MustCompile("^ ERROR "))
found := 0 // number of errors found
for line, errlist := range m {
for _, err := range errlist {
if err.Pos.Line() != line {
t.Errorf("%v: got map line %d; want %d", err, err.Pos.Line(), line)
continue
}
// err.Pos.Line() == line
got := strings.TrimSpace(err.Msg[len(" ERROR "):])
want := fmt.Sprintf(`"%d:%d"`, line, err.Pos.Col())
if got != want {
t.Errorf("%v: got msg %q; want %q", err, got, want)
continue
}
found++
}
}
want := strings.Count(src, " ERROR ")
if found != want {
t.Errorf("CommentMap got %d errors; want %d", found, want)
}
}
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