Allow custom commands to write to stdout and stderr #139
Description
Hey there, I've had a couple cases where it'd be nice to be able to write to stdout and stderr from inside a custom command.
For example:
func Test(t *testing.T) {
p := testscript.Params{
Cmds: map[string]func(ts *testscript.TestScript, neg bool, args []string){
"render": render,
},
}
testscript.Run(t, p)
}
func render(ts *testscript.TestScript, neg bool, args []string) {
html, err := render.Render(ts.MkAbs(args))
ts.Check(err)
_ = html
}render 'index.gohtml'
-- index.gohtml --
<html>
<body>
<h1>{{.}}</h1>
</body>
</html>Unfortunately I haven't found a way to use the command's results within the test. The workaround I use now is to write a file and then read from it.
What I'd like to be able to do is write a testscript like this:
render 'index.gohtml'
stdout '<h1>'
-- index.gohtml --
<html>
<body>
<h1>{{.}}</h1>
</body>
</html>And the failure case:
! render 'index.gohtml'
stderr 'bad HTML'
-- index.gohtml --
<htmlThanks for extracting and improving this package!