// Copyright 2022 The Gitea Authors. All rights reserved.// SPDX-License-Identifier: MIT package cargo import (	"bytes"	"encoding/binary"	"io"	"strings"	"testing" 	"github.com/stretchr/testify/assert"	"github.com/stretchr/testify/require") const (	description = "Package Description"	author      = "KN4CK3R"	homepage    = "https://gitea.io/"	license     = "MIT") func TestParsePackage(t *testing.T) {	createPackage := func(name, version, dependency string) io.Reader {		metadata := `{   "name":"` + name + `",   "vers":"` + version + `",   "description":"` + description + `",   "authors": ["` + author + `"],   "deps":[      {         "name":"dep",         "version_req":"1.0"      }` + dependency + `   ],   "homepage":"` + homepage + `",   "license":"` + license + `"}` 		var buf bytes.Buffer		binary.Write(&buf, binary.LittleEndian, uint32(len(metadata)))		buf.WriteString(metadata)		binary.Write(&buf, binary.LittleEndian, uint32(4))		buf.WriteString("test")		return &buf	} 	t.Run("InvalidName", func(t *testing.T) {		for _, name := range []string{"", "0test", "-test", "_test", strings.Repeat("a", 65)} {			data := createPackage(name, "1.0.0", "") 			cp, err := ParsePackage(data)			assert.Nil(t, cp)			require.ErrorIs(t, err, ErrInvalidName)		}	}) 	t.Run("InvalidVersion", func(t *testing.T) {		for _, version := range []string{"", "1.", "-1.0", "1.0.0/1"} {			data := createPackage("test", version, "") 			cp, err := ParsePackage(data)			assert.Nil(t, cp)			require.ErrorIs(t, err, ErrInvalidVersion)		}	}) 	t.Run("Valid", func(t *testing.T) {		data := createPackage("test", "1.0.0", "") 		cp, err := ParsePackage(data)		assert.NotNil(t, cp)		require.NoError(t, err) 		assert.Equal(t, "test", cp.Name)		assert.Equal(t, "1.0.0", cp.Version)		assert.Equal(t, description, cp.Metadata.Description)		assert.Equal(t, []string{author}, cp.Metadata.Authors)		assert.Len(t, cp.Metadata.Dependencies, 1)		assert.Equal(t, "dep", cp.Metadata.Dependencies[0].Name)		assert.Equal(t, homepage, cp.Metadata.ProjectURL)		assert.Equal(t, license, cp.Metadata.License)		content, _ := io.ReadAll(cp.Content)		assert.Equal(t, "test", string(content))	}) 	t.Run("Renamed dependency", func(t *testing.T) {		data := createPackage("test", "1.0.0", `, {"name":"v4l2-sys", "version":"0.3.0", "explicit_name_in_toml":"v4l2-sys-mit"}`) 		cp, err := ParsePackage(data)		assert.NotNil(t, cp)		require.NoError(t, err) 		assert.Equal(t, "test", cp.Name)		assert.Equal(t, "1.0.0", cp.Version)		assert.Equal(t, description, cp.Metadata.Description)		assert.Equal(t, []string{author}, cp.Metadata.Authors)		assert.Len(t, cp.Metadata.Dependencies, 2)		assert.Equal(t, "dep", cp.Metadata.Dependencies[0].Name)		assert.Equal(t, "v4l2-sys-mit", cp.Metadata.Dependencies[1].Name)		assert.Equal(t, "v4l2-sys", *cp.Metadata.Dependencies[1].Package)		assert.Equal(t, homepage, cp.Metadata.ProjectURL)		assert.Equal(t, license, cp.Metadata.License)		content, _ := io.ReadAll(cp.Content)		assert.Equal(t, "test", string(content))	})}