// SPDX-FileCopyrightText: 2021 Luke Granger-Brown <depot@lukegb.com>
//
// SPDX-License-Identifier: Apache-2.0

package hashfs

import (
	"testing"
	"testing/fstest"
)

func TestHashingFS(t *testing.T) {
	baseFS := fstest.MapFS{
		"foo": &fstest.MapFile{
			Data: []byte("hello, world"),
		},
		"bar/bar.txt": &fstest.MapFile{
			Data: []byte("foo bar baz"),
		},
	}

	f := New(baseFS)

	tcs := []struct {
		origName    string
		newName     string
		wantContent string
	}{
		{"foo", "foo.8710339dcb68", "hello, world"},
		{"bar/bar.txt", "bar/bar.bce50343a56f.txt", "foo bar baz"},
	}

	for _, tc := range tcs {
		t.Run(tc.origName, func(t *testing.T) {
			n, ok := f.LookupHashedName(tc.origName)
			if !ok {
				t.Errorf("LookupHashedName returned false")
			} else if n != tc.newName {
				t.Errorf("LookupHashedName returned %q; want %q", n, tc.newName)
			}

			if err := fstest.TestFS(f, tc.newName); err != nil {
				t.Fatal(err)
			}
		})
	}
}