package main

import (
	"bytes"
	"os"
	"os/exec"
	"testing"

	"git.hrafn.xyz/aether/gosick/internal/homesick/version"
)

func TestRunVersionCommand(t *testing.T) {
	stdout := &bytes.Buffer{}
	stderr := &bytes.Buffer{}

	exitCode := run([]string{"version"}, bytes.NewBuffer(nil), stdout, stderr)
	if exitCode != 0 {
		t.Fatalf("run(version) exit code = %d, want 0", exitCode)
	}
	if got := stdout.String(); got != version.String+"\n" {
		t.Fatalf("stdout = %q, want %q", got, version.String+"\n")
	}
	if got := stderr.String(); got != "" {
		t.Fatalf("stderr = %q, want empty", got)
	}

}

func TestMainVersionCommand(t *testing.T) {
	if os.Getenv("GO_WANT_HELPER_PROCESS") == "1" {
		os.Args = []string{"gosick", "version"}
		main()
		return
	}

	cmd := exec.Command(os.Args[0], "-test.run=TestMainVersionCommand")
	cmd.Env = append(os.Environ(), "GO_WANT_HELPER_PROCESS=1")

	stdout := &bytes.Buffer{}
	stderr := &bytes.Buffer{}
	cmd.Stdout = stdout
	cmd.Stderr = stderr

	if err := cmd.Run(); err != nil {
		t.Fatalf("helper process failed: %v, stderr: %s", err, stderr.String())
	}
	if got := stdout.String(); got != version.String+"\n" {
		t.Fatalf("stdout = %q, want %q", got, version.String+"\n")
	}
	if got := stderr.String(); got != "" {
		t.Fatalf("stderr = %q, want empty", got)
	}
}