interceptors

g := NewGomega(func(message string, callerSkip ...int) {
	log.Fatal(message)
})

ctx := context.Background()
args := []string{"foo", "bar"}
os.Args = append([]string{"fake"}, args...)
cmd := &cobra.Command{Use: "fake"}
cmd.RunE = Run(
	[]Interceptor{
		LoggingInterceptor1(),
		InjectIntoContextInterceptor(),
		LoggingInterceptor2(),
	},
	func(_ctx context.Context, _cmd *cobra.Command, _args []string) error {
		g.Expect(_cmd).To(Equal(cmd))
		g.Expect(_args).To(Equal(args))
		ctxVal := _ctx.Value("my_key").(string)
		fmt.Printf("called %q with %v, and ctx contains %q\n", _cmd.CalledAs(), _args, ctxVal)
		return nil
	},
)
cmd.ExecuteContext(ctx)

Output:

interceptor 1
interceptor 2: "injected value"
called "fake" with [foo bar], and ctx contains "injected value"
interceptor 2: "injected value"
interceptor 1

g := NewGomega(func(message string, callerSkip ...int) {
	log.Fatal(message)
})

ctx := context.Background()
args := []string{"foo", "bar"}
os.Args = append([]string{"fake"}, args...)
cmd := &cobra.Command{Use: "fake"}
cmd.RunE = Run(
	[]Interceptor{},
	func(_ctx context.Context, _cmd *cobra.Command, _args []string) error {
		g.Expect(_cmd).To(Equal(cmd))
		g.Expect(_args).To(Equal(args))
		fmt.Printf("called %q with %v\n", _cmd.Use, _args)
		return nil
	},
)
cmd.ExecuteContext(ctx)

Output:

called "fake" with [foo bar]