package embedFsWrapper_test

import (
	"io"
	"testing"
	"testing/fstest"

	"git.mstar.dev/mstar/goutils/embedFsWrapper"
)

func TestFSWrapper(t *testing.T) {
	mfs := fstest.MapFS{
		"baz/foo": &fstest.MapFile{Data: []byte("bar")},
	}
	wrapped := embedFsWrapper.NewFSWrapper(mfs, "baz/")
	f, err := wrapped.Open("foo")
	if err != nil {
		t.Fatalf("Expected to open file foo (baz/foo), got %v", err)
	}
	data, err := io.ReadAll(f)
	if err != nil {
		t.Fatal(err)
	}
	if string(data) != "bar" {
		t.Fatalf("Expected file to have \"bar\" as content, found %v", string(data))
	}
}