i18n-go/file_test.go at main · packaged/i18n-go · GitHub

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package i18n

import (
	"os"
	"path/filepath"
	"testing"
)

func writeTempFile(t *testing.T, pattern string, content string) string {
	t.Helper()
	dir := t.TempDir()
	path := filepath.Join(dir, pattern)
	if err := os.WriteFile(path, []byte(content), 0o600); err != nil {
		t.Fatalf("failed writing temp file: %v", err)
	}
	return path
}

func TestFileJSON(t *testing.T) {
	jsonContent := `{
        "hello_world_b10a": "Hello World",
        "hello_name_a696": "Hello {name}",
        "bag_count_0d3e": {"singular": "{qty} bag", "plural": "{qty} bags"}
    }`

	path := writeTempFile(t, "en.json", jsonContent)
	tr, err := NewFileFrom(path)
	if err != nil {
		t.Fatalf("failed to load json file: %v", err)
	}

	if val := tr.Translate("hello_world_b10a"); val != "Hello World" {
		t.Error("Basic JSON translation failed, got " + val)
	}

	if val := tr.TranslateWith("hello_name_a696", Args("name", "John")); val != "Hello John" {
		t.Error("Arg JSON translation failed, got " + val)
	}

	if val := tr.TranslatePlural("bag_count_0d3e", 1, nil); val != "1 bag" {
		t.Error("Plural JSON translation (singular) failed, got " + val)
	}
	if val := tr.TranslatePlural("bag_count_0d3e", 5, nil); val != "5 bags" {
		t.Error("Plural JSON translation (plural) failed, got " + val)
	}
}

func TestFileYAML(t *testing.T) {
	// Simple flat YAML map
	yamlContent := "" +
		"hello_world_b10a: Hello World\n" +
		"hello_name_a696: 'Hello {name}'\n" +
		"bag_count_0d3e:\n" +
		"  singular: '{qty} bag'\n" +
		"  plural: '{qty} bags'\n"

	path := writeTempFile(t, "en.yaml", yamlContent)
	tr, err := NewFileFrom(path)
	if err != nil {
		t.Fatalf("failed to load yaml file: %v", err)
	}

	if val := tr.Translate("hello_world_b10a"); val != "Hello World" {
		t.Error("Basic YAML translation failed, got " + val)
	}

	if val := tr.TranslateWith("hello_name_a696", Args("name", "Jane")); val != "Hello Jane" {
		t.Error("Arg YAML translation failed, got " + val)
	}

	if val := tr.TranslatePlural("bag_count_0d3e", 1, nil); val != "1 bag" {
		t.Error("Plural YAML translation (singular) failed, got " + val)
	}
	if val := tr.TranslatePlural("bag_count_0d3e", 2, nil); val != "2 bags" {
		t.Error("Plural YAML translation (plural) failed, got " + val)
	}
}