func (S) TestWrite(c *C) {
var b bytes.Buffer
p := pipe.Line(
pipe.Print("hello"),
pipe.Exec("sed", "s/l/k/g"),
pipe.Write(&b),
)
output, err := pipe.Output(p)
c.Assert(err, IsNil)
c.Assert(string(output), Equals, "")
c.Assert(b.String(), Equals, "hekko")
}
func (S) TestScriptNesting(c *C) {
b := &bytes.Buffer{}
p := pipe.Line(
pipe.Print("hello"),
pipe.Script(
pipe.Print("world"),
pipe.Exec("sed", "s/l/k/g"),
),
pipe.Write(b),
)
err := pipe.Run(p)
c.Assert(err, IsNil)
c.Assert(b.String(), Equals, "worldhekko")
}
func (S) TestLineNesting(c *C) {
b := &bytes.Buffer{}
p := pipe.Line(
pipe.Print("hello"),
pipe.Line(
pipe.Filter(func(line []byte) bool { return true }),
pipe.Exec("sed", "s/l/k/g"),
),
pipe.Write(b),
)
err := pipe.Run(p)
c.Assert(err, IsNil)
c.Assert(b.String(), Equals, "hekko")
}