forked from juju/cmd
/
cmd_test.go
145 lines (122 loc) · 4.27 KB
/
cmd_test.go
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// Copyright 2012, 2013 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package cmd_test
import (
"bytes"
"os"
"path/filepath"
gc "launchpad.net/gocheck"
"github.com/juju/cmd"
"github.com/juju/cmd/cmdtesting"
)
type CmdSuite struct{}
var _ = gc.Suite(&CmdSuite{})
func (s *CmdSuite) TestContext(c *gc.C) {
ctx := cmdtesting.Context(c)
c.Assert(ctx.AbsPath("/foo/bar"), gc.Equals, "/foo/bar")
c.Assert(ctx.AbsPath("foo/bar"), gc.Equals, filepath.Join(ctx.Dir, "foo/bar"))
}
func (s *CmdSuite) TestInfo(c *gc.C) {
minimal := &TestCommand{Name: "verb", Minimal: true}
help := minimal.Info().Help(cmdtesting.NewFlagSet())
c.Assert(string(help), gc.Equals, minimalHelp)
full := &TestCommand{Name: "verb"}
f := cmdtesting.NewFlagSet()
var ignored string
f.StringVar(&ignored, "option", "", "option-doc")
help = full.Info().Help(f)
c.Assert(string(help), gc.Equals, fullHelp)
optionInfo := full.Info()
optionInfo.Doc = ""
help = optionInfo.Help(f)
c.Assert(string(help), gc.Equals, optionHelp)
}
var initErrorTests = []struct {
c *TestCommand
help string
}{
{&TestCommand{Name: "verb"}, fullHelp},
{&TestCommand{Name: "verb", Minimal: true}, minimalHelp},
}
func (s *CmdSuite) TestMainInitError(c *gc.C) {
for _, t := range initErrorTests {
ctx := cmdtesting.Context(c)
result := cmd.Main(t.c, ctx, []string{"--unknown"})
c.Assert(result, gc.Equals, 2)
c.Assert(bufferString(ctx.Stdout), gc.Equals, "")
expected := "error: flag provided but not defined: --unknown\n"
c.Assert(bufferString(ctx.Stderr), gc.Equals, expected)
}
}
func (s *CmdSuite) TestMainRunError(c *gc.C) {
ctx := cmdtesting.Context(c)
result := cmd.Main(&TestCommand{Name: "verb"}, ctx, []string{"--option", "error"})
c.Assert(result, gc.Equals, 1)
c.Assert(bufferString(ctx.Stdout), gc.Equals, "")
c.Assert(bufferString(ctx.Stderr), gc.Equals, "error: BAM!\n")
}
func (s *CmdSuite) TestMainRunSilentError(c *gc.C) {
ctx := cmdtesting.Context(c)
result := cmd.Main(&TestCommand{Name: "verb"}, ctx, []string{"--option", "silent-error"})
c.Assert(result, gc.Equals, 1)
c.Assert(bufferString(ctx.Stdout), gc.Equals, "")
c.Assert(bufferString(ctx.Stderr), gc.Equals, "")
}
func (s *CmdSuite) TestMainSuccess(c *gc.C) {
ctx := cmdtesting.Context(c)
result := cmd.Main(&TestCommand{Name: "verb"}, ctx, []string{"--option", "success!"})
c.Assert(result, gc.Equals, 0)
c.Assert(bufferString(ctx.Stdout), gc.Equals, "success!\n")
c.Assert(bufferString(ctx.Stderr), gc.Equals, "")
}
func (s *CmdSuite) TestStdin(c *gc.C) {
const phrase = "Do you, Juju?"
ctx := cmdtesting.Context(c)
ctx.Stdin = bytes.NewBuffer([]byte(phrase))
result := cmd.Main(&TestCommand{Name: "verb"}, ctx, []string{"--option", "echo"})
c.Assert(result, gc.Equals, 0)
c.Assert(bufferString(ctx.Stdout), gc.Equals, phrase)
c.Assert(bufferString(ctx.Stderr), gc.Equals, "")
}
func (s *CmdSuite) TestMainHelp(c *gc.C) {
for _, arg := range []string{"-h", "--help"} {
ctx := cmdtesting.Context(c)
result := cmd.Main(&TestCommand{Name: "verb"}, ctx, []string{arg})
c.Assert(result, gc.Equals, 0)
c.Assert(bufferString(ctx.Stdout), gc.Equals, fullHelp)
c.Assert(bufferString(ctx.Stderr), gc.Equals, "")
}
}
func (s *CmdSuite) TestDefaultContextReturnsErrorInDeletedDirectory(c *gc.C) {
ctx := cmdtesting.Context(c)
wd, err := os.Getwd()
c.Assert(err, gc.IsNil)
missing := ctx.Dir + "/missing"
err = os.Mkdir(missing, 0700)
c.Assert(err, gc.IsNil)
err = os.Chdir(missing)
c.Assert(err, gc.IsNil)
defer os.Chdir(wd)
err = os.Remove(missing)
c.Assert(err, gc.IsNil)
ctx, err = cmd.DefaultContext()
c.Assert(err, gc.ErrorMatches, `getwd: no such file or directory`)
c.Assert(ctx, gc.IsNil)
}
func (s *CmdSuite) TestCheckEmpty(c *gc.C) {
c.Assert(cmd.CheckEmpty(nil), gc.IsNil)
c.Assert(cmd.CheckEmpty([]string{"boo!"}), gc.ErrorMatches, `unrecognized args: \["boo!"\]`)
}
func (s *CmdSuite) TestZeroOrOneArgs(c *gc.C) {
expectValue := func(args []string, expected string) {
arg, err := cmd.ZeroOrOneArgs(args)
c.Assert(arg, gc.Equals, expected)
c.Assert(err, gc.IsNil)
}
expectValue(nil, "")
expectValue([]string{}, "")
expectValue([]string{"foo"}, "foo")
arg, err := cmd.ZeroOrOneArgs([]string{"foo", "bar"})
c.Assert(arg, gc.Equals, "")
c.Assert(err, gc.ErrorMatches, `unrecognized args: \["bar"\]`)
}