package gempub

import (
	"embed"
	"io/fs"
	"testing"
)

//go:embed testdata/*
var testdata embed.FS

func TestGoodMetadata(t *testing.T) {
	fnames, err := fs.Glob(testdata, "testdata/metadata/good/*")
	if err != nil {
		t.Fatal(err)
	}

	for _, fname := range fnames {
		t.Run(fname, func(t *testing.T) {
			fin, err := testdata.Open(fname)
			if err != nil {
				t.Fatal(err)
			}
			defer fin.Close()

			_, err = ReadMetadata(fin)
			if err != nil {
				t.Fatal(err)
			}
		})
	}
}

func TestBadMetadata(t *testing.T) {
	fnames, err := fs.Glob(testdata, "testdata/metadata/bad/*")
	if err != nil {
		t.Fatal(err)
	}

	for _, fname := range fnames {
		t.Run(fname, func(t *testing.T) {
			fin, err := testdata.Open(fname)
			if err != nil {
				t.Fatal(err)
			}
			defer fin.Close()

			_, err = ReadMetadata(fin)
			if err == nil {
				t.Fatal("wanted error, but got none")
			}
		})
	}
}