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// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:async';
import 'dart:convert';
import 'package:file/file.dart';
import 'package:file/memory.dart';
import 'package:platform/platform.dart';
import 'package:flutter_tools/src/base/file_system.dart';
import 'package:flutter_tools/src/base/io.dart' as io;
import 'package:flutter_tools/src/base/net.dart';
import 'package:flutter_tools/src/globals.dart' as globals;
import 'package:quiver/testing/async.dart';
import '../../src/common.dart';
import '../../src/context.dart';
void main() {
group('successful fetch', () {
const String responseString = 'response string';
List<int> responseData;
setUp(() {
responseData = utf8.encode(responseString);
});
testUsingContext('fetchUrl() gets the data', () async {
final List<int> data = await fetchUrl(Uri.parse('http://example.invalid/'));
expect(data, equals(responseData));
}, overrides: <Type, Generator>{
HttpClientFactory: () => () => FakeHttpClient(200, data: responseString),
});
testUsingContext('fetchUrl(destFile) writes the data to a file', () async {
final File destFile = globals.fs.file('dest_file')..createSync();
final List<int> data = await fetchUrl(
Uri.parse('http://example.invalid/'),
destFile: destFile,
);
expect(data, equals(<int>[]));
expect(destFile.readAsStringSync(), equals(responseString));
}, overrides: <Type, Generator>{
FileSystem: () => MemoryFileSystem(),
HttpClientFactory: () => () => FakeHttpClient(200, data: responseString),
ProcessManager: () => FakeProcessManager.any(),
});
});
testUsingContext('retry from 500', () async {
String error;
FakeAsync().run((FakeAsync time) {
fetchUrl(Uri.parse('http://example.invalid/')).then((List<int> value) {
error = 'test completed unexpectedly';
}, onError: (dynamic exception) {
error = 'test failed unexpectedly: $exception';
});
expect(testLogger.statusText, '');
time.elapse(const Duration(milliseconds: 10000));
expect(testLogger.statusText,
'Download failed -- attempting retry 1 in 1 second...\n'
'Download failed -- attempting retry 2 in 2 seconds...\n'
'Download failed -- attempting retry 3 in 4 seconds...\n'
'Download failed -- attempting retry 4 in 8 seconds...\n',
);
});
expect(testLogger.errorText, isEmpty);
expect(error, isNull);
}, overrides: <Type, Generator>{
HttpClientFactory: () => () => FakeHttpClient(500),
});
testUsingContext('retry from network error', () async {
String error;
FakeAsync().run((FakeAsync time) {
fetchUrl(Uri.parse('http://example.invalid/')).then((List<int> value) {
error = 'test completed unexpectedly';
}, onError: (dynamic exception) {
error = 'test failed unexpectedly: $exception';
});
expect(testLogger.statusText, '');
time.elapse(const Duration(milliseconds: 10000));
expect(testLogger.statusText,
'Download failed -- attempting retry 1 in 1 second...\n'
'Download failed -- attempting retry 2 in 2 seconds...\n'
'Download failed -- attempting retry 3 in 4 seconds...\n'
'Download failed -- attempting retry 4 in 8 seconds...\n',
);
});
expect(testLogger.errorText, isEmpty);
expect(error, isNull);
}, overrides: <Type, Generator>{
HttpClientFactory: () => () => FakeHttpClient(200),
});
testUsingContext('retry from SocketException', () async {
String error;
FakeAsync().run((FakeAsync time) {
fetchUrl(Uri.parse('http://example.invalid/')).then((List<int> value) {
error = 'test completed unexpectedly';
}, onError: (dynamic exception) {
error = 'test failed unexpectedly: $exception';
});
expect(testLogger.statusText, '');
time.elapse(const Duration(milliseconds: 10000));
expect(testLogger.statusText,
'Download failed -- attempting retry 1 in 1 second...\n'
'Download failed -- attempting retry 2 in 2 seconds...\n'
'Download failed -- attempting retry 3 in 4 seconds...\n'
'Download failed -- attempting retry 4 in 8 seconds...\n',
);
});
expect(testLogger.errorText, isEmpty);
expect(error, isNull);
expect(testLogger.traceText, contains('Download error: SocketException'));
}, overrides: <Type, Generator>{
HttpClientFactory: () => () => FakeHttpClientThrowing(
const io.SocketException('test exception handling'),
),
});
testUsingContext('no retry from HandshakeException', () async {
String error;
FakeAsync().run((FakeAsync time) {
fetchUrl(Uri.parse('http://example.invalid/')).then((List<int> value) {
error = 'test completed unexpectedly';
}, onError: (dynamic exception) {
error = 'test failed: $exception';
});
expect(testLogger.statusText, '');
time.elapse(const Duration(milliseconds: 10000));
expect(testLogger.statusText, '');
});
expect(error, startsWith('test failed'));
expect(testLogger.traceText, contains('HandshakeException'));
}, overrides: <Type, Generator>{
HttpClientFactory: () => () => FakeHttpClientThrowing(
const io.HandshakeException('test exception handling'),
),
});
testUsingContext('check for bad override on ArgumentError', () async {
String error;
FakeAsync().run((FakeAsync time) {
fetchUrl(Uri.parse('example.invalid/')).then((List<int> value) {
error = 'test completed unexpectedly';
}, onError: (dynamic exception) {
error = 'test failed: $exception';
});
expect(testLogger.statusText, '');
time.elapse(const Duration(milliseconds: 10000));
expect(testLogger.statusText, '');
});
expect(error, startsWith('test failed'));
expect(testLogger.errorText, contains('Invalid argument'));
expect(error, contains('FLUTTER_STORAGE_BASE_URL'));
}, overrides: <Type, Generator>{
HttpClientFactory: () => () => FakeHttpClientThrowing(
ArgumentError('test exception handling'),
),
Platform: () => FakePlatform.fromPlatform(const LocalPlatform())
..environment = <String, String>{
'FLUTTER_STORAGE_BASE_URL': 'example.invalid',
},
});
testUsingContext('retry from HttpException', () async {
String error;
FakeAsync().run((FakeAsync time) {
fetchUrl(Uri.parse('http://example.invalid/')).then((List<int> value) {
error = 'test completed unexpectedly';
}, onError: (dynamic exception) {
error = 'test failed unexpectedly: $exception';
});
expect(testLogger.statusText, '');
time.elapse(const Duration(milliseconds: 10000));
expect(testLogger.statusText,
'Download failed -- attempting retry 1 in 1 second...\n'
'Download failed -- attempting retry 2 in 2 seconds...\n'
'Download failed -- attempting retry 3 in 4 seconds...\n'
'Download failed -- attempting retry 4 in 8 seconds...\n',
);
});
expect(testLogger.errorText, isEmpty);
expect(error, isNull);
expect(testLogger.traceText, contains('Download error: HttpException'));
}, overrides: <Type, Generator>{
HttpClientFactory: () => () => FakeHttpClientThrowing(
const io.HttpException('test exception handling'),
),
});
testUsingContext('retry from HttpException when request throws', () async {
String error;
FakeAsync().run((FakeAsync time) {
fetchUrl(Uri.parse('http://example.invalid/')).then((List<int> value) {
error = 'test completed unexpectedly';
}, onError: (dynamic exception) {
error = 'test failed unexpectedly: $exception';
});
expect(testLogger.statusText, '');
time.elapse(const Duration(milliseconds: 10000));
expect(testLogger.statusText,
'Download failed -- attempting retry 1 in 1 second...\n'
'Download failed -- attempting retry 2 in 2 seconds...\n'
'Download failed -- attempting retry 3 in 4 seconds...\n'
'Download failed -- attempting retry 4 in 8 seconds...\n',
);
});
expect(testLogger.errorText, isEmpty);
expect(error, isNull);
expect(testLogger.traceText, contains('Download error: HttpException'));
}, overrides: <Type, Generator>{
HttpClientFactory: () => () => FakeHttpClientThrowingRequest(
const io.HttpException('test exception handling'),
),
});
testUsingContext('max attempts', () async {
String error;
List<int> actualResult;
FakeAsync().run((FakeAsync time) {
fetchUrl(Uri.parse('http://example.invalid/'), maxAttempts: 3).then((List<int> value) {
actualResult = value;
}, onError: (dynamic exception) {
error = 'test failed unexpectedly: $exception';
});
expect(testLogger.statusText, '');
time.elapse(const Duration(milliseconds: 10000));
expect(testLogger.statusText,
'Download failed -- attempting retry 1 in 1 second...\n'
'Download failed -- attempting retry 2 in 2 seconds...\n'
'Download failed -- retry 3\n',
);
});
expect(testLogger.errorText, isEmpty);
expect(error, isNull);
expect(actualResult, isNull);
}, overrides: <Type, Generator>{
HttpClientFactory: () => () => FakeHttpClient(500),
});
testUsingContext('remote file non-existant', () async {
final Uri invalid = Uri.parse('http://example.invalid/');
final bool result = await doesRemoteFileExist(invalid);
expect(result, false);
}, overrides: <Type, Generator>{
HttpClientFactory: () => () => FakeHttpClient(404),
});
testUsingContext('remote file server error', () async {
final Uri valid = Uri.parse('http://example.valid/');
final bool result = await doesRemoteFileExist(valid);
expect(result, false);
}, overrides: <Type, Generator>{
HttpClientFactory: () => () => FakeHttpClient(500),
});
testUsingContext('remote file exists', () async {
final Uri valid = Uri.parse('http://example.valid/');
final bool result = await doesRemoteFileExist(valid);
expect(result, true);
}, overrides: <Type, Generator>{
HttpClientFactory: () => () => FakeHttpClient(200),
});
}
class FakeHttpClientThrowing implements io.HttpClient {
FakeHttpClientThrowing(this.exception);
final Object exception;
@override
Future<io.HttpClientRequest> getUrl(Uri url) async {
throw exception;
}
@override
dynamic noSuchMethod(Invocation invocation) {
throw 'io.HttpClient - $invocation';
}
}
class FakeHttpClient implements io.HttpClient {
FakeHttpClient(this.statusCode, { this.data });
final int statusCode;
final String data;
@override
Future<io.HttpClientRequest> getUrl(Uri url) async {
return FakeHttpClientRequest(statusCode, data: data);
}
@override
Future<io.HttpClientRequest> headUrl(Uri url) async {
return FakeHttpClientRequest(statusCode);
}
@override
dynamic noSuchMethod(Invocation invocation) {
throw 'io.HttpClient - $invocation';
}
}
class FakeHttpClientThrowingRequest implements io.HttpClient {
FakeHttpClientThrowingRequest(this.exception);
final Object exception;
@override
Future<io.HttpClientRequest> getUrl(Uri url) async {
return FakeHttpClientRequestThrowing(exception);
}
@override
dynamic noSuchMethod(Invocation invocation) {
throw 'io.HttpClient - $invocation';
}
}
class FakeHttpClientRequest implements io.HttpClientRequest {
FakeHttpClientRequest(this.statusCode, { this.data });
final int statusCode;
final String data;
@override
Future<io.HttpClientResponse> close() async {
return FakeHttpClientResponse(statusCode, data: data);
}
@override
dynamic noSuchMethod(Invocation invocation) {
throw 'io.HttpClientRequest - $invocation';
}
}
class FakeHttpClientRequestThrowing implements io.HttpClientRequest {
FakeHttpClientRequestThrowing(this.exception);
final Object exception;
@override
Future<io.HttpClientResponse> close() async {
throw exception;
}
@override
dynamic noSuchMethod(Invocation invocation) {
throw 'io.HttpClientRequest - $invocation';
}
}
class FakeHttpClientResponse implements io.HttpClientResponse {
FakeHttpClientResponse(this.statusCode, { this.data });
@override
final int statusCode;
final String data;
@override
String get reasonPhrase => '<reason phrase>';
@override
StreamSubscription<List<int>> listen(
void onData(List<int> event), {
Function onError,
void onDone(),
bool cancelOnError,
}) {
if (data == null) {
return Stream<List<int>>.fromFuture(Future<List<int>>.error(
const io.SocketException('test'),
)).listen(onData, onError: onError, onDone: onDone, cancelOnError: cancelOnError);
} else {
return Stream<List<int>>.fromFuture(Future<List<int>>.value(
utf8.encode(data),
)).listen(onData, onError: onError, onDone: onDone, cancelOnError: cancelOnError);
}
}
@override
Future<dynamic> forEach(void Function(List<int> element) action) async {
if (data == null) {
return Future<void>.error(const io.SocketException('test'));
} else {
return Future<void>.microtask(() => action(utf8.encode(data)));
}
}
@override
dynamic noSuchMethod(Invocation invocation) {
throw 'io.HttpClientResponse - $invocation';
}
}