// make sure to execute `go install` before tests
package main
import (
	"testing"
	"github.com/rendon/testcli"
)
func TestGreetings(t *testing.T) {
	// Using package functions
	testcli.Run("greetings")
	if !testcli.Success() {
		t.Fatalf("Expected to succeed, but failed: %s", testcli.Error())
	}
	if !testcli.StdoutContains("Hello?") {
		t.Fatalf("Expected %q to contain %q", testcli.Stdout(), "Hello?")
	}
}
func TestGreetingsWithName(t *testing.T) {
	// Using the struct version, if you want to test multiple commands
	c := testcli.Command("greetings", "--name", "John")
	c.Run()
	if !c.Success() {
		t.Fatalf("Expected to succeed, but failed with error: %s", c.Error())
	}
	if !c.StdoutContains("Hello John!") {
		t.Fatalf("Expected %q to contain %q", c.Stdout(), "Hello John!")
	}
}

package main
import (
	"fmt"
	"os"
	"github.com/codegangsta/cli"
)
func main() {
	app := cli.NewApp()
	app.Name = "cli"
	app.Usage = "CLI app"
	app.Flags = []cli.Flag{
		cli.StringFlag{
			Name:  "name",
			Usage: "User name",
		},
	}
	app.Action = func(c *cli.Context) {
		if c.String("name") != "" {
			fmt.Printf("Hello %s!\n", c.String("name"))
		} else {
			fmt.Printf("Hello? Anyone?\n")
		}
	}
	app.Run(os.Args)
}