email-mcp/internal/cli/app_test.go

package cli

import (
	"strings"
	"testing"
)

func TestAppRunRejectsUnknownCommand(t *testing.T) {
	app := NewApp()

	err := app.Run([]string{"unknown"})
	if err == nil {
		t.Fatal("expected error for unknown command")
	}
}

func TestAppRunShowsUsageWhenNoArgsProvided(t *testing.T) {
	app := NewApp()

	err := app.Run(nil)
	if err == nil {
		t.Fatal("expected error for missing command")
	}
	if !strings.Contains(err.Error(), "usage:") {
		t.Fatalf("expected usage text in error, got %q", err.Error())
	}
}

func TestAppRunAcceptsSetupAndMcp(t *testing.T) {
	app := NewApp()

	for _, command := range []string{"setup", "mcp"} {
		t.Run(command, func(t *testing.T) {
			if err := app.Run([]string{command}); err != nil {
				t.Fatalf("expected %q to be accepted, got error: %v", command, err)
			}
		})
	}
}