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// Copyright 2017 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package ast
import (
"bufio"
"bytes"
"io/ioutil"
"path/filepath"
"strings"
"testing"
)
type ErrorMatcher struct {
Data []byte
expect []*errorDesc
got []*errorDesc
}
type errorDesc struct {
file string
line int
col int
text string
matched bool
}
func NewErrorMatcher(t *testing.T, file string) *ErrorMatcher {
data, err := ioutil.ReadFile(file)
if err != nil {
t.Fatalf("failed to open input file: %v", err)
}
var stripped []byte
var errors []*errorDesc
s := bufio.NewScanner(bytes.NewReader(data))
for i := 1; s.Scan(); i++ {
ln := s.Bytes()
for {
pos := bytes.LastIndex(ln, []byte("###"))
if pos == -1 {
break
}
errors = append(errors, &errorDesc{
file: filepath.Base(file),
line: i,
text: strings.TrimSpace(string(ln[pos+3:])),
})
ln = ln[:pos]
}
stripped = append(stripped, ln...)
stripped = append(stripped, '\n')
}
if err := s.Err(); err != nil {
t.Fatalf("failed to scan input file: %v", err)
}
return &ErrorMatcher{
Data: stripped,
expect: errors,
}
}
func (em *ErrorMatcher) ErrorHandler(pos Pos, msg string) {
em.got = append(em.got, &errorDesc{
file: pos.File,
line: pos.Line,
col: pos.Col,
text: msg,
})
}
func (em *ErrorMatcher) Count() int {
return len(em.got)
}
func (em *ErrorMatcher) Check(t *testing.T) {
nextErr:
for _, e := range em.got {
for _, want := range em.expect {
if want.matched || want.line != e.line || want.text != e.text {
continue
}
want.matched = true
continue nextErr
}
t.Errorf("unexpected error:\n%v:%v:%v: %v", e.file, e.line, e.col, e.text)
}
for _, want := range em.expect {
if want.matched {
continue
}
t.Errorf("unmatched error:\n%v:%v: %v", want.file, want.line, want.text)
}
}
func (em *ErrorMatcher) DumpErrors(t *testing.T) {
for _, e := range em.got {
t.Logf("%v:%v:%v: %v", e.file, e.line, e.col, e.text)
}
}
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