pulumi/pkg/cmd/pulumi/stack_output_fuzz_test.go

125 lines
3.3 KiB
Go

// Copyright 2023-2024, Pulumi Corporation.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:build go1.18
// +build go1.18
package main
import (
"bytes"
"errors"
"fmt"
"io"
"os"
"os/exec"
"strings"
"testing"
"unicode/utf8"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func FuzzBashStackOutputWriter(f *testing.F) {
bash, err := exec.LookPath("bash")
if err != nil {
f.Skipf("Skipping: no 'bash' found: %v", err)
}
dir := f.TempDir()
f.Add("foo")
f.Add(`"bar"`)
f.Add(`'baz'`)
f.Add(`foo \"bar'\\baz`)
f.Fuzz(func(t *testing.T, give string) {
// Only consider valid unicode strings
// that do ot contain the null character.
if strings.IndexByte(give, 0) >= 0 || !utf8.Valid([]byte(give)) {
t.Skip()
}
file, err := os.CreateTemp(dir, "script.sh")
require.NoError(t, err)
defer os.Remove(file.Name())
var buff bytes.Buffer
w := io.MultiWriter(&buff, file)
err = (&bashStackOutputWriter{W: w}).WriteOne("output", give)
require.NoError(t, err)
fmt.Fprintln(w, `echo "$output"`)
require.NoError(t, file.Close())
got, err := exec.Command(bash, file.Name()).Output()
if !assert.NoError(t, err, "Failed script:\n%s", buff.String()) {
var exitErr *exec.ExitError
if errors.As(err, &exitErr) && len(exitErr.Stderr) > 0 {
t.Logf("stderr:\n%s", exitErr.Stderr)
}
}
assert.Equal(t, give+"\n", string(got))
})
}
func FuzzPowershellStackOutputWriter(f *testing.F) {
pwsh, err := exec.LookPath("powershell")
if err != nil {
f.Skipf("Skipping: no 'powershell' found: %v", err)
}
dir := f.TempDir()
f.Add("foo")
f.Add(`"bar"`)
f.Add(`'baz'`)
f.Add(`foo \"bar'\\baz`)
f.Fuzz(func(t *testing.T, give string) {
// Only consider valid unicode strings
// that do ot contain the null character.
if strings.IndexByte(give, 0) >= 0 || !utf8.Valid([]byte(give)) {
t.Skip()
}
// It's important that this file's name end with .ps1
// or Powershell will refuse to run it.
file, err := os.CreateTemp(dir, "script.*.ps1")
require.NoError(t, err)
defer os.Remove(file.Name())
var buff bytes.Buffer
w := io.MultiWriter(&buff, file)
err = (&powershellStackOutputWriter{W: w}).WriteOne("output", give)
require.NoError(t, err)
fmt.Fprintln(w, `echo "$output"`)
require.NoError(t, file.Close())
got, err := exec.Command(pwsh, "-File", file.Name()).Output()
if !assert.NoError(t, err, "Failed script:\n%s", buff.String()) {
var exitErr *exec.ExitError
if errors.As(err, &exitErr) && len(exitErr.Stderr) > 0 {
t.Logf("stderr:\n%s", exitErr.Stderr)
}
}
// Strip CRLF separately so that we handle both cases:
// ends with CRLF and ends with LF.
got = bytes.TrimSuffix(got, []byte{'\n'})
got = bytes.TrimSuffix(got, []byte{'\r'})
assert.Equal(t, give, string(got))
})
}