gotext/po_test.go

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/*
* Copyright (c) 2018 DeineAgentur UG https://www.deineagentur.com. All rights reserved.
* Licensed under the MIT License. See LICENSE file in the project root for full license information.
*/
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package gotext
import (
"fmt"
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"os"
"path"
"testing"
)
const (
translatedText = "Translated text"
)
func TestPo_Get(t *testing.T) {
var pos = []*Po{
NewPo(), // test os
NewPoFS(os.DirFS(".")),
}
for _, po := range pos {
// Try to parse a directory
po.ParseFile(path.Clean(os.TempDir()))
// Parse file
po.ParseFile("fixtures/en_US/default.po")
// Test translations
tr := po.Get("My text")
if tr != translatedText {
t.Errorf("Expected '%s' but got '%s'", translatedText, tr)
}
// Test translations
tr = po.Get("language")
if tr != "en_US" {
t.Errorf("Expected 'en_US' but got '%s'", tr)
}
}
}
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func TestPo(t *testing.T) {
// Set PO content
str := `
msgid ""
msgstr ""
# Initial comment
# Headers below
"Language: en\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Plural-Forms: nplurals=2; plural=(n != 1);\n"
# Some comment
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msgid "My text"
msgstr "Translated text"
# More comments
msgid "Another string"
msgstr ""
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# Multi-line msgid
msgid ""
"multi"
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"line"
"id"
msgstr "id with multiline content"
# Multi-line msgid_plural
msgid ""
"multi"
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"line"
"plural"
"id"
msgstr "plural id with multiline content"
#Multi-line string
msgid "Multi-line"
msgstr ""
"Multi "
"line"
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msgid "One with var: %s"
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msgid_plural "Several with vars: %s"
msgstr[0] "This one is the singular: %s"
msgstr[1] "This one is the plural: %s"
msgstr[2] "And this is the second plural form: %s"
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msgctxt "Ctx"
msgid "One with var: %s"
msgid_plural "Several with vars: %s"
msgstr[0] "This one is the singular in a Ctx context: %s"
msgstr[1] "This one is the plural in a Ctx context: %s"
msgid "Some random"
msgstr "Some random Translation"
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msgctxt "Ctx"
msgid "Some random in a context"
msgstr "Some random Translation in a context"
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msgid "Empty Translation"
msgstr ""
msgid "Empty plural form singular"
msgid_plural "Empty plural form"
msgstr[0] "Singular translated"
msgstr[1] ""
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msgid "More"
msgstr "More Translation"
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`
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// Write PO content to file
filename := path.Clean(os.TempDir() + string(os.PathSeparator) + "default.po")
f, err := os.Create(filename)
if err != nil {
t.Fatalf("Can't create test file: %s", err.Error())
}
defer f.Close()
_, err = f.WriteString(str)
if err != nil {
t.Fatalf("Can't write to test file: %s", err.Error())
}
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// Create po object
po := NewPo()
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// Try to parse a directory
po.ParseFile(path.Clean(os.TempDir()))
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// Parse file
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po.ParseFile(filename)
// Test translations
tr := po.Get("My text")
if tr != translatedText {
t.Errorf("Expected '%s' but got '%s'", translatedText, tr)
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}
v := "Variable"
tr = po.Get("One with var: %s", v)
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if tr != "This one is the singular: Variable" {
t.Errorf("Expected 'This one is the singular: Variable' but got '%s'", tr)
}
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// Test multi-line id
tr = po.Get("multilineid")
if tr != "id with multiline content" {
t.Errorf("Expected 'id with multiline content' but got '%s'", tr)
}
// Test multi-line plural id
tr = po.Get("multilinepluralid")
if tr != "plural id with multiline content" {
t.Errorf("Expected 'plural id with multiline content' but got '%s'", tr)
}
// Test multi-line
tr = po.Get("Multi-line")
if tr != "Multi line" {
t.Errorf("Expected 'Multi line' but got '%s'", tr)
}
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// Test plural
tr = po.GetN("One with var: %s", "Several with vars: %s", 2, v)
if tr != "This one is the plural: Variable" {
t.Errorf("Expected 'This one is the plural: Variable' but got '%s'", tr)
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}
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// Test not existent translations
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tr = po.Get("This is a test")
if tr != "This is a test" {
t.Errorf("Expected 'This is a test' but got '%s'", tr)
}
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tr = po.GetN("This is a test", "This are tests", 100)
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if tr != "This are tests" {
t.Errorf("Expected 'This are tests' but got '%s'", tr)
}
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// Test context translations
v = "Test"
tr = po.GetC("One with var: %s", "Ctx", v)
if tr != "This one is the singular in a Ctx context: Test" {
t.Errorf("Expected 'This one is the singular in a Ctx context: Test' but got '%s'", tr)
}
// Test plural
tr = po.GetNC("One with var: %s", "Several with vars: %s", 17, "Ctx", v)
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if tr != "This one is the plural in a Ctx context: Test" {
t.Errorf("Expected 'This one is the plural in a Ctx context: Test' but got '%s'", tr)
}
// Test default plural vs singular return responses
tr = po.GetN("Original", "Original plural", 4)
if tr != "Original plural" {
t.Errorf("Expected 'Original plural' but got '%s'", tr)
}
tr = po.GetN("Original", "Original plural", 1)
if tr != "Original" {
t.Errorf("Expected 'Original' but got '%s'", tr)
}
// Test empty Translation strings
tr = po.Get("Empty Translation")
if tr != "Empty Translation" {
t.Errorf("Expected 'Empty Translation' but got '%s'", tr)
}
tr = po.Get("Empty plural form singular")
if tr != "Singular translated" {
t.Errorf("Expected 'Singular translated' but got '%s'", tr)
}
tr = po.GetN("Empty plural form singular", "Empty plural form", 1)
if tr != "Singular translated" {
t.Errorf("Expected 'Singular translated' but got '%s'", tr)
}
tr = po.GetN("Empty plural form singular", "Empty plural form", 2)
if tr != "Empty plural form" {
t.Errorf("Expected 'Empty plural form' but got '%s'", tr)
}
// Test last Translation
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tr = po.Get("More")
if tr != "More Translation" {
t.Errorf("Expected 'More Translation' but got '%s'", tr)
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}
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}
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func TestPlural(t *testing.T) {
// Set PO content
str := `
msgid ""
msgstr ""
"Plural-Forms: nplurals=2; plural=(n != 1);\n"
msgid "Singular: %s"
msgid_plural "Plural: %s"
msgstr[0] "TR Singular: %s"
msgstr[1] "TR Plural: %s"
msgstr[2] "TR Plural 2: %s"
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`
// Create po object
po := NewPo()
po.Parse([]byte(str))
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v := "Var"
tr := po.GetN("Singular: %s", "Plural: %s", 2, v)
if tr != "TR Plural: Var" {
t.Errorf("Expected 'TR Plural: Var' but got '%s'", tr)
}
tr = po.GetN("Singular: %s", "Plural: %s", 1, v)
if tr != "TR Singular: Var" {
t.Errorf("Expected 'TR Singular: Var' but got '%s'", tr)
}
}
func TestPluralNoHeaderInformation(t *testing.T) {
// Set PO content
str := `
msgid ""
msgstr ""
msgid "Singular: %s"
msgid_plural "Plural: %s"
msgstr[0] "TR Singular: %s"
msgstr[1] "TR Plural: %s"
msgstr[2] "TR Plural 2: %s"
`
// Create po object
po := NewPo()
po.Parse([]byte(str))
v := "Var"
tr := po.GetN("Singular: %s", "Plural: %s", 2, v)
if tr != "TR Plural: Var" {
t.Errorf("Expected 'TR Plural: Var' but got '%s'", tr)
}
tr = po.GetN("Singular: %s", "Plural: %s", 1, v)
if tr != "TR Singular: Var" {
t.Errorf("Expected 'TR Singular: Var' but got '%s'", tr)
}
}
func TestPoHeaders(t *testing.T) {
// Set PO content
str := `
msgid ""
msgstr ""
# Initial comment
# Headers below
"Language: en\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Plural-Forms: nplurals=2; plural=(n != 1);\n"
# Some comment
msgid "Example"
msgstr "Translated example"
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`
// Create po object
po := NewPo()
// Parse
po.Parse([]byte(str))
// Check headers expected
if po.Language != "en" {
t.Errorf("Expected 'Language: en' but got '%s'", po.Language)
}
do := po.GetDomain()
// Check headers expected
if do.PluralForms != "nplurals=2; plural=(n != 1);" {
t.Errorf("Expected 'Plural-Forms: nplurals=2; plural=(n != 1);' but got '%s'", do.PluralForms)
}
}
func TestMissingPoHeadersSupport(t *testing.T) {
// Set PO content
str := `
msgid "Example"
msgstr "Translated example"
`
// Create po object
po := NewPo()
// Parse
po.Parse([]byte(str))
// Check Translation expected
if po.Get("Example") != "Translated example" {
t.Errorf("Expected 'Translated example' but got '%s'", po.Get("Example"))
}
}
type pluralTest struct {
form, num int
}
func pluralExpected(t *testing.T, pluralTests []pluralTest, domain *Domain) {
t.Helper()
for _, pt := range pluralTests {
pt := pt
t.Run(fmt.Sprintf("pluralForm(%d)", pt.num), func(t *testing.T) {
n := domain.pluralForm(pt.num)
if n != pt.form {
t.Errorf("Expected %d for pluralForm(%d), got %d", pt.form, pt.num, n)
}
})
}
}
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func TestPluralFormsSingle(t *testing.T) {
// Single form
str := `
msgid ""
msgstr ""
"Plural-Forms: nplurals=1; plural=0;"
# Some comment
msgid "Singular"
msgid_plural "Plural"
msgstr[0] "Singular form"
msgstr[1] "Plural form 1"
msgstr[2] "Plural form 2"
msgstr[3] "Plural form 3"
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`
// Create po object
po := NewPo()
// Parse
po.Parse([]byte(str))
pluralTests := []pluralTest{
{form: 0, num: 0},
{form: 0, num: 1},
{form: 0, num: 2},
{form: 0, num: 3},
{form: 0, num: 50},
}
pluralExpected(t, pluralTests, po.GetDomain())
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}
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func TestPluralForms2(t *testing.T) {
// 2 forms
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str := `
msgid ""
msgstr ""
"Plural-Forms: nplurals=2; plural=n != 1;"
# Some comment
msgid "Singular"
msgid_plural "Plural"
msgstr[0] "Singular form"
msgstr[1] "Plural form 1"
msgstr[2] "Plural form 2"
msgstr[3] "Plural form 3"
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`
// Create po object
po := NewPo()
// Parse
po.Parse([]byte(str))
pluralTests := []pluralTest{
{form: 1, num: 0},
{form: 0, num: 1},
{form: 1, num: 2},
{form: 1, num: 3},
}
pluralExpected(t, pluralTests, po.GetDomain())
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}
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func TestPluralForms3(t *testing.T) {
// 3 forms
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str := `
msgid ""
msgstr ""
"Plural-Forms: nplurals=3; plural=n%10==1 && n%100!=11 ? 0 : n != 0 ? 1 : 2;"
# Some comment
msgid "Singular"
msgid_plural "Plural"
msgstr[0] "Singular form"
msgstr[1] "Plural form 1"
msgstr[2] "Plural form 2"
msgstr[3] "Plural form 3"
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`
// Create po object
po := NewPo()
// Parse
po.Parse([]byte(str))
pluralTests := []pluralTest{
{form: 2, num: 0},
{form: 0, num: 1},
{form: 1, num: 2},
{form: 1, num: 3},
{form: 1, num: 100},
{form: 1, num: 49},
}
pluralExpected(t, pluralTests, po.GetDomain())
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}
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func TestPluralFormsSpecial(t *testing.T) {
// 3 forms special
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str := `
msgid ""
msgstr ""
"Plural-Forms: nplurals=3;"
"plural=(n==1) ? 0 : (n>=2 && n<=4) ? 1 : 2;"
# Some comment
msgid "Singular"
msgid_plural "Plural"
msgstr[0] "Singular form"
msgstr[1] "Plural form 1"
msgstr[2] "Plural form 2"
msgstr[3] "Plural form 3"
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`
// Create po object
po := NewPo()
// Parse
po.Parse([]byte(str))
pluralTests := []pluralTest{
{form: 0, num: 1},
{form: 1, num: 2},
{form: 1, num: 4},
{form: 2, num: 0},
{form: 2, num: 1000},
}
pluralExpected(t, pluralTests, po.GetDomain())
}
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func TestTranslationObject(t *testing.T) {
tr := NewTranslation()
str := tr.Get()
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if str != "" {
t.Errorf("Expected '' but got '%s'", str)
}
// Set id
tr.ID = "Text"
str = tr.Get()
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// Get again
if str != "Text" {
t.Errorf("Expected 'Text' but got '%s'", str)
}
}
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func TestPoRace(t *testing.T) {
// Set PO content
str := `# Some comment
msgid "My text"
msgstr "Translated text"
# More comments
msgid "Another string"
msgstr ""
msgid "One with var: %s"
msgid_plural "Several with vars: %s"
msgstr[0] "This one is the singular: %s"
msgstr[1] "This one is the plural: %s"
msgstr[2] "And this is the second plural form: %s"
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`
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// Create Po object
po := NewPo()
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// Create sync channels
pc := make(chan bool)
rc := make(chan bool)
// Parse po content in a goroutine
go func(po *Po, done chan bool) {
po.Parse([]byte(str))
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done <- true
}(po, pc)
// Read some Translation on a goroutine
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go func(po *Po, done chan bool) {
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po.Get("My text")
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done <- true
}(po, rc)
// Read something at top level
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po.Get("My text")
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// Wait for goroutines to finish
<-pc
<-rc
}
func TestNewPoTranslatorRace(t *testing.T) {
// Create Po object
po := NewPo()
// Create sync channels
pc := make(chan bool)
rc := make(chan bool)
// Parse po content in a goroutine
go func(mo Translator, done chan bool) {
// Parse file
mo.ParseFile("fixtures/en_US/default.po")
done <- true
}(po, pc)
// Read some Translation on a goroutine
go func(mo Translator, done chan bool) {
mo.Get("My text")
done <- true
}(po, rc)
// Read something at top level
po.Get("My text")
// Wait for goroutines to finish
<-pc
<-rc
}
func TestPoTextEncoding(t *testing.T) {
// Create po objects
po := NewPo()
po2 := NewPo()
// Parse file
po.ParseFile("fixtures/en_US/default.po")
if _, ok := po.Headers["Pot-Creation-Date"]; ok {
t.Errorf("Expected non-canonicalised header, got canonicalised")
} else {
if _, ok = po.Headers["POT-Creation-Date"]; !ok {
t.Errorf("Expected non-canonicalised header, but it was missing")
}
}
// Round-trip
buff, err := po.MarshalText()
if err != nil {
t.Fatal(err)
}
po2.Parse(buff)
for k, v := range po.Headers {
if v2, ok := po2.Headers[k]; ok {
for i, value := range v {
if value != v2[i] {
t.Errorf("TestPoTextEncoding: Header Difference for %s: %s vs %s", k, value, v2[i])
}
}
}
}
// Test translations
tr := po2.Get("My text")
if tr != "Translated text" {
t.Errorf("Expected 'Translated text' but got '%s'", tr)
}
tr = po2.Get("language")
if tr != "en_US" {
t.Errorf("Expected 'en_US' but got '%s'", tr)
}
tr = po2.Get("Some random")
if tr != "Some random translation" {
t.Errorf("Expected 'Some random translation' but got '%s'", tr)
}
v := "Test"
tr = po.GetC("One with var: %s", "Ctx", v)
if tr != "This one is the singular in a Ctx context: Test" {
t.Errorf("Expected 'This one is the singular in a Ctx context: Test' but got '%s'", tr)
}
tr = po.GetNC("One with var: %s", "Several with vars: %s", 17, "Ctx", v)
if tr != "This one is the plural in a Ctx context: Test" {
t.Errorf("Expected 'This one is the plural in a Ctx context: Test' but got '%s'", tr)
}
// Another kind of round-trip
po.Set("My text", "Translated text")
po.Set("language", "en_US")
// But remove 'the'
po.SetNC("One with var: %s", "Several with vars: %s", "Ctx", 1, "This one is singular in a Ctx context: %s")
po.SetNC("One with var: %s", "Several with vars: %s", "Ctx", 17, "This one is plural in a Ctx context: %s")
po.DropStaleTranslations()
buff, err = po.MarshalText()
if err != nil {
t.Fatal(err)
}
po2 = NewPo()
po2.Parse(buff)
for k, v := range po.Headers {
if v2, ok := po2.Headers[k]; ok {
for i, value := range v {
if value != v2[i] {
t.Errorf("Only translations should have been dropped, not headers")
}
}
}
}
tr = po2.Get("My text")
if tr != "Translated text" {
t.Errorf("Expected 'Translated text' but got '%s'", tr)
}
tr = po2.Get("language")
if tr != "en_US" {
t.Errorf("Expected 'en_US' but got '%s'", tr)
}
tr = po2.Get("Some random")
if tr == "Some random translation" || tr != "Some random" {
t.Errorf("Expected 'Some random' translation to be dropped; was present")
}
// With 'the' removed?
v = "Test"
tr = po.GetC("One with var: %s", "Ctx", v)
if tr != "This one is singular in a Ctx context: Test" {
t.Errorf("Expected 'This one is singular in a Ctx context: Test' but got '%s'", tr)
}
tr = po.GetNC("One with var: %s", "Several with vars: %s", 17, "Ctx", v)
if tr != "This one is plural in a Ctx context: Test" {
t.Errorf("Expected 'This one is plural in a Ctx context: Test' but got '%s'", tr)
}
}