1// Copyright 2015 Google Inc. All rights reserved.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package main
16
17import (
18	"bufio"
19	"bytes"
20	"flag"
21	"fmt"
22	"io"
23	"io/ioutil"
24	"os"
25	"os/exec"
26	"path/filepath"
27	"runtime"
28	"syscall"
29)
30
31var (
32	chdir = flag.String("p", "", "Change to a path before executing test")
33	touch = flag.String("f", "", "Write a file on success")
34)
35
36// This will copy the stdout from the test process to our stdout
37// unless it only contains "PASS\n".
38func handleStdout(stdout io.Reader) {
39	reader := bufio.NewReader(stdout)
40
41	// This is intentionally 6 instead of 5 to check for EOF
42	buf, _ := reader.Peek(6)
43	if bytes.Equal(buf, []byte("PASS\n")) {
44		return
45	}
46
47	io.Copy(os.Stdout, reader)
48}
49
50func main() {
51	flag.Parse()
52
53	if flag.NArg() == 0 {
54		fmt.Fprintln(os.Stderr, "error: must pass at least one test executable")
55		os.Exit(1)
56	}
57
58	test, err := filepath.Abs(flag.Arg(0))
59	if err != nil {
60		fmt.Fprintln(os.Stderr, "error: Failed to locate test binary:", err)
61	}
62
63	cmd := exec.Command(test, flag.Args()[1:]...)
64	if *chdir != "" {
65		cmd.Dir = *chdir
66
67		// GOROOT is commonly a relative path in Android, make it
68		// absolute if we're changing directories.
69		if absRoot, err := filepath.Abs(runtime.GOROOT()); err == nil {
70			os.Setenv("GOROOT", absRoot)
71		} else {
72			fmt.Fprintln(os.Stderr, "error: Failed to locate GOROOT:", err)
73		}
74	}
75
76	cmd.Stderr = os.Stderr
77	stdout, err := cmd.StdoutPipe()
78	if err != nil {
79		fmt.Fprintln(os.Stderr, err)
80		os.Exit(1)
81	}
82
83	err = cmd.Start()
84	if err != nil {
85		fmt.Fprintln(os.Stderr, err)
86		os.Exit(1)
87	}
88
89	handleStdout(stdout)
90
91	if err = cmd.Wait(); err != nil {
92		if e, ok := err.(*exec.ExitError); ok {
93			if status, ok := e.Sys().(syscall.WaitStatus); ok && status.Exited() {
94				os.Exit(status.ExitStatus())
95			} else if status.Signaled() {
96				fmt.Fprintf(os.Stderr, "test got signal %s\n", status.Signal())
97				os.Exit(1)
98			}
99		}
100		fmt.Fprintln(os.Stderr, err)
101		os.Exit(1)
102	}
103
104	if *touch != "" {
105		err = ioutil.WriteFile(*touch, []byte{}, 0666)
106		if err != nil {
107			panic(err)
108		}
109	}
110
111	os.Exit(0)
112}
113