70 lines
2.1 KiB
Dart
70 lines
2.1 KiB
Dart
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import 'dart:convert';
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import 'dart:io';
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import 'package:flutter_test/flutter_test.dart';
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/// The messages of the `.arb` file [name] in `lib/l10n/`, without metadata.
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Map<String, String> _messages(String name) => {
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for (final MapEntry(:key, :value) in (jsonDecode(
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File('lib/l10n/$name').readAsStringSync(),
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) as Map<String, Object?>).entries)
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if (!key.startsWith('@')) key: value! as String,
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};
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/// The names of the placeholders in [message], with plural and select
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/// arguments; the words of their branches don't count. (gen-l10n reads
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/// quotes as text here: `use-escaping` is off.)
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Set<String> _placeholders(String message) {
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final names = <String>{};
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// Even depths hold text and placeholders, odd ones a plural's branches.
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var depth = 0;
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for (var i = 0; i < message.length; i++) {
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switch (message[i]) {
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case '{':
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final name = RegExp(r'\{\s*(\w+)\s*[,}]').matchAsPrefix(message, i);
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if (name != null && depth.isEven) {
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names.add(name.group(1)!);
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}
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depth++;
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case '}':
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depth--;
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}
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}
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return names;
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}
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void main() {
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final template = _messages('halkyon_ui_en.arb');
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test('German has every message, with the same placeholders', () {
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final german = _messages('halkyon_ui_de.arb');
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expect(
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template.keys.where((key) => !german.containsKey(key)),
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isEmpty,
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reason: 'untranslated',
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);
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expect(
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german.keys.where((key) => !template.containsKey(key)),
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isEmpty,
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reason: 'not in the template',
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);
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for (final MapEntry(:key, :value) in german.entries) {
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expect(_placeholders(value), _placeholders(template[key]!), reason: key);
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}
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});
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test("the English variants override the template's messages only, with "
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'the same placeholders', () {
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for (final variant in ['halkyon_ui_en_GB.arb', 'halkyon_ui_en_US.arb']) {
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for (final MapEntry(:key, :value) in _messages(variant).entries) {
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expect(template, contains(key), reason: '$variant: $key');
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expect(
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_placeholders(value),
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_placeholders(template[key]!),
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reason: '$variant: $key',
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);
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}
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}
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});
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}
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