// Copyright 2017 syzkaller project authors. All rights reserved.
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// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
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package ast
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import (
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"bytes"
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"io/ioutil"
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"path/filepath"
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"reflect"
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"strings"
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"testing"
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)
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func TestParseAll(t *testing.T) {
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files, err := filepath.Glob(filepath.Join("..", "..", "sys", "linux", "*.txt"))
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if err != nil || len(files) == 0 {
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t.Fatalf("failed to read sys dir: %v", err)
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}
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for _, file := range files {
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data, err := ioutil.ReadFile(file)
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if err != nil {
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t.Fatalf("failed to read file: %v", err)
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}
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t.Run(file, func(t *testing.T) {
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eh := func(pos Pos, msg string) {
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t.Fatalf("%v: %v", pos, msg)
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}
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desc := Parse(data, file, eh)
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if desc == nil {
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t.Fatalf("parsing failed, but no error produced")
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}
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data2 := Format(desc)
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desc2 := Parse(data2, file, eh)
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if desc2 == nil {
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t.Fatalf("parsing failed, but no error produced")
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}
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if len(desc.Nodes) != len(desc2.Nodes) {
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t.Fatalf("formatting number of top level decls: %v/%v",
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len(desc.Nodes), len(desc2.Nodes))
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}
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for i := range desc.Nodes {
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n1, n2 := desc.Nodes[i], desc2.Nodes[i]
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if n1 == nil {
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t.Fatalf("got nil node")
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}
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if !reflect.DeepEqual(n1, n2) {
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t.Fatalf("formatting changed code:\n%#v\nvs:\n%#v", n1, n2)
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}
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}
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data3 := Format(desc.Clone())
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if !bytes.Equal(data, data3) {
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t.Fatalf("Clone lost data")
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}
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})
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}
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}
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func TestParse(t *testing.T) {
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for _, test := range parseTests {
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t.Run(test.name, func(t *testing.T) {
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errorHandler := func(pos Pos, msg string) {
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t.Logf("%v: %v", pos, msg)
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}
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Parse([]byte(test.input), "foo", errorHandler)
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})
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}
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}
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var parseTests = []struct {
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name string
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input string
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result []interface{}
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}{
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{
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"empty",
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``,
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[]interface{}{},
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},
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{
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"new-line",
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`
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`,
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[]interface{}{},
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},
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{
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"nil",
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"\x00",
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[]interface{}{},
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},
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}
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func TestErrors(t *testing.T) {
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files, err := ioutil.ReadDir("testdata")
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if err != nil {
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t.Fatal(err)
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}
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if len(files) == 0 {
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t.Fatal("no input files")
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}
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for _, f := range files {
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if !strings.HasSuffix(f.Name(), ".txt") {
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continue
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}
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name := f.Name()
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t.Run(name, func(t *testing.T) {
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em := NewErrorMatcher(t, filepath.Join("testdata", name))
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desc := Parse(em.Data, name, em.ErrorHandler)
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if desc != nil && em.Count() != 0 {
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em.DumpErrors(t)
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t.Fatalf("parsing succeed, but got errors")
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}
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if desc == nil && em.Count() == 0 {
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t.Fatalf("parsing failed, but got no errors")
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}
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em.Check(t)
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})
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}
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}
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