package trunk

import (
	"os"
	"path/filepath"
	"testing"
)

func TestTheCloneBesideTheCheckIsTheTrunk(t *testing.T) {
	beside := t.TempDir()
	dir := filepath.Join(beside, Repository, "checks", "x")
	if err := os.MkdirAll(dir, 0o755); err != nil {
		t.Fatal(err)
	}
	if err := os.WriteFile(filepath.Join(dir, "known"), []byte("a\nb\n"), 0o644); err != nil {
		t.Fatal(err)
	}
	t.Setenv(BesideEnv, beside)
	raw, found, say := Read("checks/x/known", t.TempDir())
	if !found || string(raw) != "a\nb\n" || say == "" {
		t.Fatalf("read %q found %v, said %q", raw, found, say)
	}
	if _, found, say := Read("checks/x/absent", t.TempDir()); found || say == "" {
		t.Fatalf("a file the trunk does not hold was found (%v), said %q", found, say)
	}
}

func TestWithNoCloneAndNoGitTheComparisonIsSaidNotMade(t *testing.T) {
	t.Setenv(BesideEnv, "")
	_, found, say := Read("checks/x/known", t.TempDir()) // not a git checkout
	if found || say == "" || say[:12] != "NOT COMPARED" {
		t.Fatalf("found %v, said %q; wanted NOT COMPARED", found, say)
	}
}

func TestACloneBesideWithoutTheCatalogueFallsBackToGit(t *testing.T) {
	t.Setenv(BesideEnv, t.TempDir()) // the siblings are there, the catalogue's own base is not
	_, found, say := Read("checks/x/known", t.TempDir())
	if found || say == "" {
		t.Fatalf("found %v, said %q", found, say)
	}
}