package app

import (
	"bytes"
	"io"
	"strings"
	"testing"

	"gitea.maximumdirect.net/eric/narratio/internal/buildinfo"
)

func TestExecuteVersionReportsEmbeddedBuildVersion(t *testing.T) {
	original := buildinfo.Version
	buildinfo.Version = "v1.5.0-test"
	t.Cleanup(func() { buildinfo.Version = original })

	var stdout bytes.Buffer
	var stderr bytes.Buffer
	if code := Execute([]string{"version"}, &stdout, &stderr); code != 0 {
		t.Fatalf("Execute() code = %d, stderr = %q", code, stderr.String())
	}
	if got, want := stdout.String(), "narratio v1.5.0-test\n"; got != want {
		t.Fatalf("stdout = %q, want %q", got, want)
	}
	if stderr.Len() != 0 {
		t.Fatalf("stderr = %q, want empty", stderr.String())
	}
}

func TestExecuteVersionRejectsArguments(t *testing.T) {
	var stderr bytes.Buffer
	if code := Execute([]string{"version", "extra"}, io.Discard, &stderr); code == 0 {
		t.Fatal("Execute() code = 0, want failure")
	}
	if !strings.Contains(stderr.String(), "version: unexpected arguments") {
		t.Fatalf("stderr = %q, want argument error", stderr.String())
	}
}