package trunk

import (
	"os"
	"path/filepath"
	"strings"
	"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, err := Read("checks/x/known")
	if err != nil || !found || string(raw) != "a\nb\n" {
		t.Fatalf("read %q found %v err %v", raw, found, err)
	}
	if _, found, err := Read("checks/x/absent"); err != nil || found {
		t.Fatalf("a file the trunk does not hold: found %v err %v; wanted its first copy", found, err)
	}
}

func TestWithNothingBesideTheComparisonFailsAndSaysNotMade(t *testing.T) {
	t.Setenv(BesideEnv, "")
	_, found, err := Read("checks/x/known")
	if found || err == nil || !strings.Contains(err.Error(), "NOT COMPARED") {
		t.Fatalf("found %v, err %v; wanted a failure saying NOT COMPARED", found, err)
	}
}

func TestACloneBesideWithoutTheCatalogueFailsAndSaysNotMade(t *testing.T) {
	t.Setenv(BesideEnv, t.TempDir()) // the siblings are there, the catalogue's own base is not
	_, found, err := Read("checks/x/known")
	if found || err == nil || !strings.Contains(err.Error(), "NOT COMPARED") || !strings.Contains(err.Error(), "not beside") {
		t.Fatalf("found %v, err %v; wanted a failure naming the missing copy", found, err)
	}
}