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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"
"reflect"
"strings"
"testing"
)
func TestParseAll(t *testing.T) {
dir := filepath.Join("..", "..", "sys")
files, err := ioutil.ReadDir(dir)
if err != nil {
t.Fatalf("failed to read sys dir: %v", err)
}
for _, file := range files {
if file.IsDir() || !strings.HasSuffix(file.Name(), ".txt") {
continue
}
data, err := ioutil.ReadFile(filepath.Join(dir, file.Name()))
if err != nil {
t.Fatalf("failed to read file: %v", err)
}
t.Run(file.Name(), func(t *testing.T) {
eh := func(pos Pos, msg string) {
t.Fatalf("%v:%v:%v: %v", pos.File, pos.Line, pos.Col, msg)
}
desc := Parse(data, file.Name(), eh)
if desc == nil {
t.Fatalf("parsing failed, but no error produced")
}
data2 := Format(desc)
desc2 := Parse(data2, file.Name(), eh)
if desc2 == nil {
t.Fatalf("parsing failed, but no error produced")
}
if len(desc.Nodes) != len(desc2.Nodes) {
t.Fatalf("formatting number of top level decls: %v/%v",
len(desc.Nodes), len(desc2.Nodes))
}
for i := range desc.Nodes {
n1, n2 := desc.Nodes[i], desc2.Nodes[i]
if n1 == nil {
t.Fatalf("got nil node")
}
if !reflect.DeepEqual(n1, n2) {
t.Fatalf("formatting changed code:\n%#v\nvs:\n%#v", n1, n2)
}
}
data3 := Format(Clone(desc))
if !bytes.Equal(data, data3) {
t.Fatalf("Clone lost data")
}
})
}
}
func TestParse(t *testing.T) {
for _, test := range parseTests {
t.Run(test.name, func(t *testing.T) {
errorHandler := func(pos Pos, msg string) {
t.Logf("%v:%v:%v: %v", pos.File, pos.Line, pos.Col, msg)
}
Parse([]byte(test.input), "foo", errorHandler)
})
}
}
var parseTests = []struct {
name string
input string
result []interface{}
}{
{
"empty",
``,
[]interface{}{},
},
{
"new-line",
`
`,
[]interface{}{},
},
{
"nil",
"\x00",
[]interface{}{},
},
}
type Error struct {
Line int
Col int
Text string
Matched bool
}
func TestErrors(t *testing.T) {
files, err := ioutil.ReadDir("testdata")
if err != nil {
t.Fatal(err)
}
if len(files) == 0 {
t.Fatal("no input files")
}
for _, f := range files {
if !strings.HasSuffix(f.Name(), ".txt") {
continue
}
t.Run(f.Name(), func(t *testing.T) {
data, err := ioutil.ReadFile(filepath.Join("testdata", f.Name()))
if err != nil {
t.Fatalf("failed to open input file: %v", err)
}
var stripped []byte
var errors []*Error
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, &Error{
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)
}
var got []*Error
desc := Parse(stripped, "test", func(pos Pos, msg string) {
got = append(got, &Error{
Line: pos.Line,
Col: pos.Col,
Text: msg,
})
})
if desc != nil && len(got) != 0 {
t.Fatalf("parsing succeed, but got errors: %v", got)
}
if desc == nil && len(got) == 0 {
t.Fatalf("parsing failed, but got no errors")
}
nextErr:
for _, gotErr := range got {
for _, wantErr := range errors {
if wantErr.Matched {
continue
}
if wantErr.Line != gotErr.Line {
continue
}
if wantErr.Text != gotErr.Text {
continue
}
wantErr.Matched = true
continue nextErr
}
t.Errorf("unexpected error: %v:%v: %v",
gotErr.Line, gotErr.Col, gotErr.Text)
}
for _, wantErr := range errors {
if wantErr.Matched {
continue
}
t.Errorf("not matched error: %v: %v", wantErr.Line, wantErr.Text)
}
})
}
}
|
