Exemple #1
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func (S) TestSetEnvVar(c *C) {
	os.Setenv("PIPE_NEW_VAR", "")
	os.Setenv("PIPE_OLD_VAR", "old")
	defer os.Setenv("PIPE_OLD_VAR", "")
	p := pipe.Script(
		pipe.SetEnvVar("PIPE_NEW_VAR", "new"),
		pipe.System("echo $PIPE_OLD_VAR $PIPE_NEW_VAR"),
		pipe.SetEnvVar("PIPE_NEW_VAR", "after"),
		func(s *pipe.State) error {
			count := 0
			prefix := "PIPE_NEW_VAR="
			for _, kv := range s.Env {
				if strings.HasPrefix(kv, prefix) {
					count++
				}
			}
			if count != 1 {
				return fmt.Errorf("found %d environment variables", count)
			}
			return nil
		},
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "old new\n")
	c.Assert(os.Getenv("PIPE_NEW_VAR"), Equals, "")
}
Exemple #2
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func (S) TestKillAbortedExecTask(c *C) {
	p := pipe.Script(
		pipe.TaskFunc(func(*pipe.State) error { return fmt.Errorf("boom") }),
		pipe.Exec("will-not-run"),
	)
	_, err := pipe.Output(p)
	c.Assert(err, ErrorMatches, "boom")
}
Exemple #3
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func (S) TestFilter(c *C) {
	p := pipe.Line(
		pipe.System("echo out1; echo err1 1>&2; echo out2; echo err2 1>&2; echo out3"),
		pipe.Filter(func(line []byte) bool { return string(line) != "out2" }),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "out1\nout3\n")
}
Exemple #4
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func (S) TestFilterNoNewLine(c *C) {
	p := pipe.Line(
		pipe.Print("out1\nout2\nout3"),
		pipe.Filter(func(line []byte) bool { return string(line) != "out2" }),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "out1\nout3")
}
Exemple #5
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func (S) TestRead(c *C) {
	p := pipe.Line(
		pipe.Read(bytes.NewBufferString("hello")),
		pipe.Exec("sed", "s/l/k/g"),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "hekko")
}
Exemple #6
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func (S) TestPrintf(c *C) {
	p := pipe.Line(
		pipe.Printf("hello:%d", 42),
		pipe.Exec("sed", "s/l/k/g"),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "hekko:42")
}
Exemple #7
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func (S) TestReadFileNonExistent(c *C) {
	path := filepath.Join(c.MkDir(), "file")
	p := pipe.Line(
		pipe.ReadFile(path),
		pipe.Exec("cat"),
	)
	output, err := pipe.Output(p)
	c.Assert(err, ErrorMatches, "open .*/file: no such file or directory")
	c.Assert(output, IsNil)
}
Exemple #8
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func (S) TestDiscard(c *C) {
	p := pipe.Line(
		pipe.Print("hello"),
		pipe.Discard(),
		pipe.Print("world"),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "world")
}
Exemple #9
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func (S) TestAppendFileMode(c *C) {
	path := filepath.Join(c.MkDir(), "file")
	p := pipe.AppendFile(path, 0600)
	_, err := pipe.Output(p)
	c.Assert(err, IsNil)

	stat, err := os.Stat(path)
	c.Assert(err, IsNil)
	c.Assert(stat.Mode()&os.ModePerm, Equals, os.FileMode(0600))
}
Exemple #10
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func (S) TestScriptOutput(c *C) {
	p := pipe.Script(
		pipe.System("echo out1; echo err1 1>&2; echo out2; echo err2 1>&2"),
		pipe.System("echo out3; echo err3 1>&2; echo out4; echo err4 1>&2"),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "out1\nout2\nout3\nout4\n")

}
Exemple #11
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func (S) TestTee(c *C) {
	var b bytes.Buffer
	p := pipe.Line(
		pipe.Print("hello"),
		pipe.Exec("sed", "s/l/k/g"),
		pipe.Tee(&b),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "hekko")
	c.Assert(b.String(), Equals, "hekko")
}
Exemple #12
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func (S) TestScriptPreservesStreams(c *C) {
	p := pipe.Script(
		pipe.Line(
			pipe.Print("hello\n"),
			pipe.Discard(),
		),
		pipe.Exec("echo", "world"),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "world\n")
}
Exemple #13
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func (S) TestLineIsolatesEnv(c *C) {
	p := pipe.Line(
		pipe.SetEnvVar("PIPE_VAR", "outer"),
		pipe.Line(
			pipe.SetEnvVar("PIPE_VAR", "inner"),
		),
		pipe.System("echo $PIPE_VAR"),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "outer\n")
}
Exemple #14
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func (S) TestReadFileRelative(c *C) {
	dir := c.MkDir()
	path := filepath.Join(dir, "file")
	err := ioutil.WriteFile(path, []byte("hello"), 0644)
	c.Assert(err, IsNil)

	p := pipe.Line(
		pipe.ReadFile(path),
		pipe.Exec("sed", "s/l/k/g"),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "hekko")
}
Exemple #15
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func (S) TestLineTermination(c *C) {
	// Shouldn't block waiting for a reader that won't read.
	var b []byte
	for i := 0; i < 256*1024/8; i++ {
		b = append(b, "xxxxxxxx"...)
	}
	p := pipe.Line(
		pipe.Print(string(b)),
		pipe.Exec("true"),
	)
	output, err := pipe.Output(p)
	c.Assert(err, ErrorMatches, `command "true": write \|1: broken pipe`)
	c.Assert(string(output), Equals, "")
}
Exemple #16
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func (S) TestLineIsolatesDir(c *C) {
	dir1 := c.MkDir()
	dir2 := c.MkDir()
	p := pipe.Line(
		pipe.ChDir(dir1),
		pipe.Line(
			pipe.ChDir(dir2),
		),
		pipe.System("echo $PWD"),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, dir1+"\n")
}
Exemple #17
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func (S) TestWriteFileAbsolute(c *C) {
	path := filepath.Join(c.MkDir(), "file")
	p := pipe.Line(
		pipe.Print("hello"),
		pipe.Exec("sed", "s/l/k/g"),
		pipe.WriteFile(path, 0600),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "")

	data, err := ioutil.ReadFile(path)
	c.Assert(err, IsNil)
	c.Assert(string(data), Equals, "hekko")
}
Exemple #18
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func findCommandOutput(cmd []string, c chan []Searchresult) {
	results := make([]Searchresult, 0)
	line := pipe.Line(
		pipe.Exec("find", cmd...),
		pipe.Exec("head", "-10"),
	)
	output, err := pipe.Output(line)
	if err != nil {
		panic(err)
	}
	split := strings.Split(string(output), "\n")
	for _, i := range split {
		results = append(results, *NewSearchResult(i))
	}
	c <- results
}
Exemple #19
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func (S) TestReplace(c *C) {
	p := pipe.Line(
		pipe.System("echo out1; echo err1 1>&2; echo out2; echo err2 1>&2; echo out3"),
		pipe.Replace(func(line []byte) []byte {
			if bytes.HasPrefix(line, []byte("out")) {
				if line[3] == '3' {
					return nil
				}
				return []byte{'l', line[3], ','}
			}
			return line
		}),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "l1,l2,")
}
Exemple #20
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func (S) TestReplaceNoNewLine(c *C) {
	p := pipe.Line(
		pipe.Print("out1\nout2\nout3"),
		pipe.Replace(func(line []byte) []byte {
			if bytes.HasPrefix(line, []byte("out")) {
				if line[3] == '2' {
					return nil
				}
				return []byte{'l', line[3], ','}
			}
			return line
		}),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "l1,l3,")
}
Exemple #21
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func (S) TestTeeWriteFileRelative(c *C) {
	dir := c.MkDir()
	path := filepath.Join(dir, "file")
	p := pipe.Line(
		pipe.ChDir(dir),
		pipe.Print("hello"),
		pipe.Exec("sed", "s/l/k/g"),
		pipe.TeeWriteFile("file", 0600),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "hekko")

	data, err := ioutil.ReadFile(path)
	c.Assert(err, IsNil)
	c.Assert(string(data), Equals, "hekko")
}
Exemple #22
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func (S) TestMkDir(c *C) {
	dir := c.MkDir()
	subdir := filepath.Join(dir, "subdir")
	subsubdir := filepath.Join(subdir, "subsubdir")
	p := pipe.Script(
		pipe.MkDir(subdir, 0755), // Absolute
		pipe.ChDir(subdir),
		pipe.MkDir("subsubdir", 0700), // Relative
		pipe.ChDir("subsubdir"),
		pipe.System("echo $PWD"),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, subsubdir+"\n")

	stat, err := os.Stat(subsubdir)
	c.Assert(err, IsNil)
	c.Assert(stat.Mode()&os.ModePerm, Equals, os.FileMode(0700))
}
Exemple #23
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func (S) TestTeeWriteFileAbsolute(c *C) {
	path := filepath.Join(c.MkDir(), "file")
	p := pipe.Line(
		pipe.Print("hello"),
		pipe.Exec("sed", "s/l/k/g"),
		pipe.TeeWriteFile(path, 0600),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "hekko")

	data, err := ioutil.ReadFile(path)
	c.Assert(err, IsNil)
	c.Assert(string(data), Equals, "hekko")

	stat, err := os.Stat(path)
	c.Assert(err, IsNil)
	c.Assert(stat.Mode()&os.ModePerm, Equals, os.FileMode(0600))
}
Exemple #24
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func (S) TestChDir(c *C) {
	wd1, err := os.Getwd()
	c.Assert(err, IsNil)

	dir := c.MkDir()
	subdir := filepath.Join(dir, "subdir")
	err = os.Mkdir(subdir, 0755)
	p := pipe.Script(
		pipe.ChDir(dir),
		pipe.ChDir("subdir"),
		pipe.System("echo $PWD"),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, subdir+"\n")

	wd2, err := os.Getwd()
	c.Assert(err, IsNil)
	c.Assert(wd2, Equals, wd1)
}
Exemple #25
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func (S) TestAppendFileAbsolute(c *C) {
	path := filepath.Join(c.MkDir(), "file")
	p := pipe.Script(
		pipe.Line(
			pipe.Print("hello "),
			pipe.AppendFile(path, 0600),
		),
		pipe.Line(
			pipe.Print("world!"),
			pipe.AppendFile(path, 0600),
		),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "")

	data, err := ioutil.ReadFile(path)
	c.Assert(err, IsNil)
	c.Assert(string(data), Equals, "hello world!")
}
Exemple #26
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func (S) TestErrorHandling(c *C) {
	sync := make(chan bool)
	p := pipe.Script(
		pipe.Line(
			pipe.TaskFunc(func(*pipe.State) error {
				sync <- true
				return fmt.Errorf("err1")
			}),
			pipe.TaskFunc(func(*pipe.State) error {
				<-sync
				return fmt.Errorf("err2")
			}),
		),
		pipe.Print("never happened"),
	)
	output, err := pipe.Output(p)
	if err.Error() != "err1; err2" && err.Error() != "err2; err1" {
		c.Fatalf(`want "err1; err2" or "err2; err1"; got %q`, err.Error())
	}
	c.Assert(string(output), Equals, "")
}
Exemple #27
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func (S) TestTeeAppendFileRelative(c *C) {
	dir := c.MkDir()
	path := filepath.Join(dir, "file")
	p := pipe.Script(
		pipe.ChDir(dir),
		pipe.Line(
			pipe.Print("hello "),
			pipe.TeeAppendFile("file", 0600),
		),
		pipe.Line(
			pipe.Print("world!"),
			pipe.TeeAppendFile("file", 0600),
		),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "hello world!")

	data, err := ioutil.ReadFile(path)
	c.Assert(err, IsNil)
	c.Assert(string(data), Equals, "hello world!")
}
Exemple #28
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func (S) TestTeeAppendFileAbsolute(c *C) {
	path := filepath.Join(c.MkDir(), "file")
	p := pipe.Script(
		pipe.Line(
			pipe.Print("hello "),
			pipe.TeeAppendFile(path, 0600),
		),
		pipe.Line(
			pipe.Print("world!"),
			pipe.TeeAppendFile(path, 0600),
		),
	)
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "hello world!")

	data, err := ioutil.ReadFile(path)
	c.Assert(err, IsNil)
	c.Assert(string(data), Equals, "hello world!")

	stat, err := os.Stat(path)
	c.Assert(err, IsNil)
	c.Assert(stat.Mode()&os.ModePerm, Equals, os.FileMode(0600))
}
Exemple #29
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func (S) TestExecOutput(c *C) {
	p := pipe.Exec("/bin/sh", "-c", "echo out1; echo err1 1>&2; echo out2; echo err2 1>&2")
	output, err := pipe.Output(p)
	c.Assert(err, IsNil)
	c.Assert(string(output), Equals, "out1\nout2\n")
}