dati

data_test.go (5152B)

---

 package dati
 
 /*
 Copyright (C) 2023 gearsix <gearsix@tuta.io>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 import (
 	"bytes"
 	"encoding/json"
 	"fmt"
 	"io"
 	"os"
 	"path/filepath"
 	"strings"
 	"testing"
 
 	"github.com/pelletier/go-toml"
 	"gopkg.in/yaml.v3"
 )
 
 var dataExts = []string{
 	".json", "json", "JSON", ".JSON",
 	".yaml", "yaml", "YAML", ".YAML",
 	".toml", "toml", "TOML", ".TOML",
 	".misc", "-", ".", "",
 }
 
 func TestIsDataFormat(t *testing.T) {
 	for i, ext := range dataExts {
 		var target bool
 
 		if i < 12 {
 			target = true
 		}
 
 		is := IsDataFormat(ext)
 		if is != target {
 			t.Fatalf("%t did not return %t", is, target)
 		}
 	}
 }
 
 func TestReadDataFormat(t *testing.T) {
 	for i, ext := range dataExts {
 		var target DataFormat
 
 		if i < 4 {
 			target = JSON
 		} else if i < 8 {
 			target = YAML
 		} else if i < 12 {
 			target = TOML
 		}
 
 		fmt := ReadDataFormat(ext)
 		if fmt != target {
 			if target == "" {
 				t.Fatalf("%s is not a supported data language", fmt)
 			} else {
 				t.Fatalf("%s did not return %s", fmt, target)
 			}
 		}
 	}
 }
 
 var good = map[DataFormat]string{
 	JSON: `{"eg":0}`,
 	YAML: `eg: 0
 `,
 	TOML: `eg = 0
 `,
 }
 
 const badData = `{"json!:2:]}}`
 
 func writeTestFile(t *testing.T, path string, Data string) {
 	f, e := os.Create(path)
 	defer f.Close()
 	if e != nil {
 		t.Skipf("setup failure: %s", e)
 	}
 	_, e = f.WriteString(Data)
 	if e != nil {
 		t.Skipf("setup failure: %s", e)
 	}
 }
 
 func validateLoadData(t *testing.T, d interface{}, e error, lang DataFormat) {
 	var b []byte
 
 	if e != nil {
 		t.Fatal(e)
 	}
 
 	switch lang {
 	case JSON:
 		b, e = json.Marshal(d)
 	case YAML:
 		b, e = yaml.Marshal(d)
 	case TOML:
 		b, e = toml.Marshal(d)
 	}
 
 	if e != nil {
 		t.Error(e)
 	}
 	if string(b) != good[lang] {
 		t.Fatalf("incorrect %s: %s does not match %s", lang, b, good[lang])
 	}
 }
 
 func TestLoadData(t *testing.T) {
 	var d interface{}
 	var e error
 
 	for lang, data := range good {
 		e = LoadData(lang, strings.NewReader(data), &d)
 		validateLoadData(t, d, e, lang)
 	}
 
 	if e = LoadData(JSON, strings.NewReader(badData), &d); e == nil {
 		t.Fatalf("bad data passed")
 	}
 	if e = LoadData(TOML, strings.NewReader(""), &d); e != nil {
 		t.Fatalf("empty data failed %s, %s", d, e)
 	}
 	if e = LoadData("", strings.NewReader("shouldn't pass"), &d); e == nil {
 		t.Fatalf("invalid data language passed")
 	}
 
 	return
 }
 
 func TestLoadDataFile(t *testing.T) {
 	var d interface{}
 	var e error
 	var p string
 	tdir := os.TempDir()
 
 	for lang, data := range good {
 		p = tdir + "/good." + string(lang)
 		writeTestFile(t, p, data)
 		e = LoadDataFile(p, &d)
 		validateLoadData(t, d, e, lang)
 	}
 
 	p = tdir + "/bad.json"
 	writeTestFile(t, p, badData)
 	e = LoadDataFile(p, &d)
 	if e == nil {
 		t.Fatalf("bad data passed")
 	}
 
 	p = tdir + "/empty.json"
 	writeTestFile(t, p, "")
 	e = LoadDataFile(p, &d)
 	if e != nil {
 		t.Fatalf("empty file failed: %s", e)
 	}
 
 	if e = LoadDataFile("non-existing-file.toml", &d); e == nil {
 		t.Fatalf("non-existing file passed: %s, %s", d, e)
 	}
 }
 
 func validateWriteData(t *testing.T, err error, data string, writer io.Reader) error {
 	if err != nil {
 		return err
 	}
 
 	var buf []byte
 	if _, err = writer.Read(buf); string(buf) != data {
 		err = fmt.Errorf("%s does not match %s", string(buf), data)
 	}
 	return err
 }
 
 func TestWriteData(t *testing.T) {
 	var err error
 	var buf []byte
 	writer := bytes.NewBuffer(buf)
 
 	testGoodData := func(format DataFormat) {
 		writer.Reset()
 		err = WriteData(format, good[format], writer)
 		validateWriteData(t, err, good[format], writer)
 	}
 
 	testEmptyData := func(format DataFormat) {
 		writer.Reset()
 		err = WriteData(format, "", writer)
 		validateWriteData(t, err, "", writer)
 	}
 
 	testBadFormat := func() {
 		writer.Reset()
 		if err = WriteData("", good[JSON], writer); err == nil {
 			t.Errorf("invalid data format passed")
 		}
 	}
 
 	for _, format := range []DataFormat{JSON, TOML, YAML} {
 		testGoodData(format)
 		testEmptyData(format)
 	}
 	testBadFormat()
 }
 
 func TestWriteDataFile(t *testing.T) {
 	var err error
 	var path string
 	var file *os.File
 	dir := os.TempDir()
 
 	testGoodData := func(format DataFormat) {
 		path = filepath.Join(dir, "good."+string(format))
 		file, err = WriteDataFile(format, good[format], path)
 		validateWriteData(t, err, good[format], file)
 	}
 
 	testBadFormat := func() {
 		path = filepath.Join(dir, "bad")
 		if file, err = WriteDataFile("", nil, path); err == nil {
 			t.Errorf("bad format passed")
 		} else if file != nil {
 			t.Error("file is not nil")
 		}
 	}
 
 	for _, format := range []DataFormat{JSON, YAML, TOML} {
 		testGoodData(format)
 	}
 	testBadFormat()
 }