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catch parse error from corrupt config (#45319)

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Jonah Williams 2019-11-22 10:09:23 -08:00 committed by GitHub
parent 497ae83c82
commit 6640c8b9b4
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2 changed files with 53 additions and 35 deletions
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17
packages/flutter_tools/lib/src/base/config.dart
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@ -3,15 +3,28 @@
// found in the LICENSE file.
import '../convert.dart';
import '../globals.dart';
import 'context.dart';
import 'file_system.dart';
import 'logger.dart';
import 'utils.dart';
class Config {
Config([File configFile]) {
Config([File configFile, Logger localLogger]) {
final Logger loggerInstance = localLogger ?? logger;
_configFile = configFile ?? fs.file(fs.path.join(userHomePath(), '.flutter_settings'));
if (_configFile.existsSync()) {
_values = castStringKeyedMap(json.decode(_configFile.readAsStringSync()));
try {
_values = castStringKeyedMap(json.decode(_configFile.readAsStringSync()));
} on FormatException {
loggerInstance
..printError('Failed to decode preferences in ${_configFile.path}.')
..printError(
'You may need to reapply any previously saved configuration '
'with the "flutter config" command.',
);
_configFile.deleteSync();
}
}
}

71
packages/flutter_tools/test/general.shard/config_test.dart
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@ -2,54 +2,59 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:file/memory.dart';
import 'package:flutter_tools/src/base/config.dart';
import 'package:flutter_tools/src/base/file_system.dart';
import 'package:flutter_tools/src/base/logger.dart';
import '../src/common.dart';
void main() {
Config config;
Directory tempDir;
MemoryFileSystem memoryFileSystem;
setUp(() {
tempDir = fs.systemTempDirectory.createTempSync('flutter_config_test.');
final File file = fs.file(fs.path.join(tempDir.path, '.settings'));
memoryFileSystem = MemoryFileSystem();
final File file = memoryFileSystem.file('example');
config = Config(file);
});
tearDown(() {
tryToDelete(tempDir);
test('Config get set value', () async {
expect(config.getValue('foo'), null);
config.setValue('foo', 'bar');
expect(config.getValue('foo'), 'bar');
expect(config.keys, contains('foo'));
});
group('config', () {
test('get set value', () async {
expect(config.getValue('foo'), null);
config.setValue('foo', 'bar');
expect(config.getValue('foo'), 'bar');
expect(config.keys, contains('foo'));
});
test('Config get set bool value', () async {
expect(config.getValue('foo'), null);
config.setValue('foo', true);
expect(config.getValue('foo'), true);
expect(config.keys, contains('foo'));
});
test('get set bool value', () async {
expect(config.getValue('foo'), null);
config.setValue('foo', true);
expect(config.getValue('foo'), true);
expect(config.keys, contains('foo'));
});
test('Config containsKey', () async {
expect(config.containsKey('foo'), false);
config.setValue('foo', 'bar');
expect(config.containsKey('foo'), true);
});
test('containsKey', () async {
expect(config.containsKey('foo'), false);
config.setValue('foo', 'bar');
expect(config.containsKey('foo'), true);
});
test('Config removeValue', () async {
expect(config.getValue('foo'), null);
config.setValue('foo', 'bar');
expect(config.getValue('foo'), 'bar');
expect(config.keys, contains('foo'));
config.removeValue('foo');
expect(config.getValue('foo'), null);
expect(config.keys, isNot(contains('foo')));
});
test('removeValue', () async {
expect(config.getValue('foo'), null);
config.setValue('foo', 'bar');
expect(config.getValue('foo'), 'bar');
expect(config.keys, contains('foo'));
config.removeValue('foo');
expect(config.getValue('foo'), null);
expect(config.keys, isNot(contains('foo')));
});
test('Config parse error', () {
final BufferLogger bufferLogger =BufferLogger();
final File file = memoryFileSystem.file('example')
..writeAsStringSync('{"hello":"bar');
config = Config(file, bufferLogger);
expect(file.existsSync(), false);
expect(bufferLogger.errorText, contains('Failed to decode preferences'));
});
}