Golang jujuc.NewCommand函数代码示例

func (c *HelpToolCommand) Run(ctx *cmd.Context) error {
	var hookctx dummyHookContext
	if c.tool == "" {
		// Ripped from SuperCommand. We could Run() a SuperCommand
		// with "help commands", but then the implicit "help" command
		// shows up.
		names := jujuc.CommandNames()
		cmds := make([]cmd.Command, 0, len(names))
		longest := 0
		for _, name := range names {
			if c, err := jujuc.NewCommand(hookctx, name); err == nil {
				if len(name) > longest {
					longest = len(name)
				}
				cmds = append(cmds, c)
			}
		}
		for _, c := range cmds {
			info := c.Info()
			fmt.Fprintf(ctx.Stdout, "%-*s  %s\n", longest, info.Name, info.Purpose)
		}
	} else {
		c, err := jujuc.NewCommand(hookctx, c.tool)
		if err != nil {
			return err
		}
		info := c.Info()
		f := gnuflag.NewFlagSet(info.Name, gnuflag.ContinueOnError)
		c.SetFlags(f)
		ctx.Stdout.Write(info.Help(f))
	}
	return nil
}

func (s *RelationListSuite) TestRelationListHelp(c *gc.C) {
	template := `
usage: relation-list [options]
purpose: list relation units

options:
--format  (= smart)
    specify output format (json|smart|yaml)
-o, --output (= "")
    specify an output file
-r  (= %s)
    specify a relation by id
%s`[1:]

	for relid, t := range map[int]struct {
		usage, doc string
	}{
		-1: {"", "\n-r must be specified when not in a relation hook\n"},
		0:  {"peer0:0", ""},
	} {
		c.Logf("test relid %d", relid)
		hctx := s.GetHookContext(c, relid, "")
		com, err := jujuc.NewCommand(hctx, "relation-list")
		c.Assert(err, gc.IsNil)
		ctx := testing.Context(c)
		code := cmd.Main(com, ctx, []string{"--help"})
		c.Assert(code, gc.Equals, 0)
		expect := fmt.Sprintf(template, t.usage, t.doc)
		c.Assert(bufferString(ctx.Stdout), gc.Equals, expect)
		c.Assert(bufferString(ctx.Stderr), gc.Equals, "")
	}
}

func (s *RelationSetSuite) TestRun(c *gc.C) {
	hctx := s.GetHookContext(c, 0, "")
	for i, t := range relationSetRunTests {
		c.Logf("test %d", i)

		pristine := Settings{"pristine": "untouched"}
		hctx.rels[0].units["u/0"] = pristine
		basic := Settings{"base": "value"}
		hctx.rels[1].units["u/0"] = basic

		// Run the command.
		com, err := jujuc.NewCommand(hctx, "relation-set")
		c.Assert(err, gc.IsNil)
		rset := com.(*jujuc.RelationSetCommand)
		rset.RelationId = 1
		rset.Settings = t.change
		ctx := testing.Context(c)
		err = com.Run(ctx)
		c.Assert(err, gc.IsNil)

		// Check changes.
		c.Assert(hctx.rels[0].units["u/0"], gc.DeepEquals, pristine)
		c.Assert(hctx.rels[1].units["u/0"], gc.DeepEquals, t.expect)
	}
}

func (s *RelationIdsSuite) TestHelp(c *gc.C) {
	template := `
usage: %s
purpose: list all relation ids with the given relation name

options:
--format  (= smart)
    specify output format (json|smart|yaml)
-o, --output (= "")
    specify an output file
%s`[1:]

	for relid, t := range map[int]struct {
		usage, doc string
	}{
		-1: {"relation-ids [options] <name>", ""},
		0:  {"relation-ids [options] [<name>]", "\nCurrent default relation name is \"x\".\n"},
		3:  {"relation-ids [options] [<name>]", "\nCurrent default relation name is \"y\".\n"},
	} {
		c.Logf("relid %d", relid)
		hctx := s.GetHookContext(c, relid, "")
		com, err := jujuc.NewCommand(hctx, "relation-ids")
		c.Assert(err, gc.IsNil)
		ctx := testing.Context(c)
		code := cmd.Main(com, ctx, []string{"--help"})
		c.Assert(code, gc.Equals, 0)
		expect := fmt.Sprintf(template, t.usage, t.doc)
		c.Assert(bufferString(ctx.Stdout), gc.Equals, expect)
		c.Assert(bufferString(ctx.Stderr), gc.Equals, "")
	}
}

func (s *RelationListSuite) TestRelationList(c *gc.C) {
	for i, t := range relationListTests {
		c.Logf("test %d: %s", i, t.summary)
		hctx := s.GetHookContext(c, t.relid, "")
		setMembers(hctx.rels[0], t.members0)
		setMembers(hctx.rels[1], t.members1)
		com, err := jujuc.NewCommand(hctx, "relation-list")
		c.Assert(err, gc.IsNil)
		ctx := testing.Context(c)
		code := cmd.Main(com, ctx, t.args)
		c.Logf(bufferString(ctx.Stderr))
		c.Assert(code, gc.Equals, t.code)
		if code == 0 {
			c.Assert(bufferString(ctx.Stderr), gc.Equals, "")
			expect := t.out
			if expect != "" {
				expect = expect + "\n"
			}
			c.Assert(bufferString(ctx.Stdout), gc.Equals, expect)
		} else {
			c.Assert(bufferString(ctx.Stdout), gc.Equals, "")
			expect := fmt.Sprintf(`(.|\n)*error: %s\n`, t.out)
			c.Assert(bufferString(ctx.Stderr), gc.Matches, expect)
		}
	}
}

func (s *ConfigGetSuite) TestAllPlusKey(c *gc.C) {
	hctx := s.GetHookContext(c, -1, "")
	com, err := jujuc.NewCommand(hctx, "config-get")
	c.Assert(err, gc.IsNil)
	ctx := testing.Context(c)
	code := cmd.Main(com, ctx, []string{"--all", "--format", "json", "monsters"})
	c.Assert(code, gc.Equals, 2)
	c.Assert(bufferString(ctx.Stderr), gc.Equals, "error: cannot use argument --all together with key \"monsters\"\n")
}

func (s *PortsSuite) TestHelp(c *gc.C) {
	hctx := s.GetHookContext(c, -1, "")
	open, err := jujuc.NewCommand(hctx, "open-port")
	c.Assert(err, gc.IsNil)
	flags := testing.NewFlagSet()
	c.Assert(string(open.Info().Help(flags)), gc.Equals, `
usage: open-port <port>[/<protocol>]
purpose: register a port to open

The port will only be open while the service is exposed.
`[1:])

	close, err := jujuc.NewCommand(hctx, "close-port")
	c.Assert(err, gc.IsNil)
	c.Assert(string(close.Info().Help(flags)), gc.Equals, `
usage: close-port <port>[/<protocol>]
purpose: ensure a port is always closed
`[1:])
}

func (s *RelationSetSuite) TestRunDeprecationWarning(c *gc.C) {
	hctx := s.GetHookContext(c, 0, "")
	com, _ := jujuc.NewCommand(hctx, "relation-set")
	// The rel= is needed to make this a valid command.
	ctx, err := testing.RunCommand(c, com, "--format", "foo", "rel=")

	c.Assert(err, gc.IsNil)
	c.Assert(testing.Stdout(ctx), gc.Equals, "")
	c.Assert(testing.Stderr(ctx), gc.Equals, "--format flag deprecated for command \"relation-set\"")
}

func (s *PortsSuite) TestBadArgs(c *gc.C) {
	for _, name := range []string{"open-port", "close-port"} {
		for _, t := range badPortsTests {
			hctx := s.GetHookContext(c, -1, "")
			com, err := jujuc.NewCommand(hctx, name)
			c.Assert(err, gc.IsNil)
			err = testing.InitCommand(com, t.args)
			c.Assert(err, gc.ErrorMatches, t.err)
		}
	}
}

func (s *PortsSuite) TestOpenCloseDeprecation(c *gc.C) {
	hctx := s.GetHookContext(c, -1, "")
	for _, t := range portsFormatDeprectaionTests {
		name := t.cmd[0]
		com, err := jujuc.NewCommand(hctx, name)
		c.Assert(err, gc.IsNil)
		ctx := testing.Context(c)
		code := cmd.Main(com, ctx, t.cmd[1:])
		c.Assert(code, gc.Equals, 0)
		c.Assert(testing.Stdout(ctx), gc.Equals, "")
		c.Assert(testing.Stderr(ctx), gc.Equals, "--format flag deprecated for command \""+name+"\"")
	}
}

func (s *PortsSuite) TestOpenClose(c *gc.C) {
	hctx := s.GetHookContext(c, -1, "")
	for _, t := range portsTests {
		com, err := jujuc.NewCommand(hctx, t.cmd[0])
		c.Assert(err, gc.IsNil)
		ctx := testing.Context(c)
		code := cmd.Main(com, ctx, t.cmd[1:])
		c.Assert(code, gc.Equals, 0)
		c.Assert(bufferString(ctx.Stdout), gc.Equals, "")
		c.Assert(bufferString(ctx.Stderr), gc.Equals, "")
		c.Assert(hctx.ports, gc.DeepEquals, t.expect)
	}
}

func (s *ConfigGetSuite) TestOutputPath(c *gc.C) {
	hctx := s.GetHookContext(c, -1, "")
	com, err := jujuc.NewCommand(hctx, "config-get")
	c.Assert(err, gc.IsNil)
	ctx := testing.Context(c)
	code := cmd.Main(com, ctx, []string{"--output", "some-file", "monsters"})
	c.Assert(code, gc.Equals, 0)
	c.Assert(bufferString(ctx.Stderr), gc.Equals, "")
	c.Assert(bufferString(ctx.Stdout), gc.Equals, "")
	content, err := ioutil.ReadFile(filepath.Join(ctx.Dir, "some-file"))
	c.Assert(err, gc.IsNil)
	c.Assert(string(content), gc.Equals, "False\n")
}

func (s *ConfigGetSuite) TestOutputFormatKey(c *gc.C) {
	for i, t := range configGetKeyTests {
		c.Logf("test %d: %#v", i, t.args)
		hctx := s.GetHookContext(c, -1, "")
		com, err := jujuc.NewCommand(hctx, "config-get")
		c.Assert(err, gc.IsNil)
		ctx := testing.Context(c)
		code := cmd.Main(com, ctx, t.args)
		c.Assert(code, gc.Equals, 0)
		c.Assert(bufferString(ctx.Stderr), gc.Equals, "")
		c.Assert(bufferString(ctx.Stdout), gc.Matches, t.out)
	}
}

func (s *NewCommandSuite) TestNewCommand(c *gc.C) {
	ctx := s.GetHookContext(c, 0, "")
	for _, t := range newCommandTests {
		com, err := jujuc.NewCommand(ctx, t.name)
		if t.err == "" {
			// At this level, just check basic sanity; commands are tested in
			// more detail elsewhere.
			c.Assert(err, gc.IsNil)
			c.Assert(com.Info().Name, gc.Equals, t.name)
		} else {
			c.Assert(com, gc.IsNil)
			c.Assert(err, gc.ErrorMatches, t.err)
		}
	}
}

func (s *RelationGetSuite) TestHelp(c *gc.C) {
	for i, t := range relationGetHelpTests {
		c.Logf("test %d", i)
		hctx := s.GetHookContext(c, t.relid, t.unit)
		com, err := jujuc.NewCommand(hctx, "relation-get")
		c.Assert(err, gc.IsNil)
		ctx := testing.Context(c)
		code := cmd.Main(com, ctx, []string{"--help"})
		c.Assert(code, gc.Equals, 0)
		unitHelp := ""
		if t.unit != "" {
			unitHelp = fmt.Sprintf("Current default unit id is %q.\n", t.unit)
		}
		expect := fmt.Sprintf(helpTemplate, t.usage, t.rel, unitHelp)
		c.Assert(bufferString(ctx.Stdout), gc.Equals, expect)
		c.Assert(bufferString(ctx.Stderr), gc.Equals, "")
	}
}