blob: 045557ab8eb4867e585c898a722e45ec7ad04375 [file] [log] [blame]
// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
// for details. 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:http_parser/http_parser.dart';
import 'package:charcode/charcode.dart';
import 'package:test/test.dart';
void main() {
group('encoder', () {
test('adds a header to the chunk of bytes', () {
expect(chunkedCoding.encode([1, 2, 3]),
equals([$3, $cr, $lf, 1, 2, 3, $cr, $lf, $0, $cr, $lf, $cr, $lf]));
});
test('uses hex for chunk size', () {
final data = Iterable<int>.generate(0xA7).toList();
expect(
chunkedCoding.encode(data),
equals(
[$a, $7, $cr, $lf, ...data, $cr, $lf, $0, $cr, $lf, $cr, $lf]));
});
test('just generates a footer for an empty input', () {
expect(chunkedCoding.encode([]), equals([$0, $cr, $lf, $cr, $lf]));
});
group('with chunked conversion', () {
late List<List<int>> results;
late ByteConversionSink sink;
setUp(() {
results = [];
final controller = StreamController<List<int>>(sync: true);
controller.stream.listen(results.add);
sink = chunkedCoding.encoder.startChunkedConversion(controller.sink);
});
test('adds headers to each chunk of bytes', () {
sink.add([1, 2, 3, 4]);
expect(
results,
equals([
[$4, $cr, $lf, 1, 2, 3, 4, $cr, $lf]
]));
sink.add([5, 6, 7]);
expect(
results,
equals([
[$4, $cr, $lf, 1, 2, 3, 4, $cr, $lf],
[$3, $cr, $lf, 5, 6, 7, $cr, $lf],
]));
sink.close();
expect(
results,
equals([
[$4, $cr, $lf, 1, 2, 3, 4, $cr, $lf],
[$3, $cr, $lf, 5, 6, 7, $cr, $lf],
[$0, $cr, $lf, $cr, $lf],
]));
});
test('handles empty chunks', () {
sink.add([]);
expect(results, equals([[]]));
sink.add([1, 2, 3]);
expect(
results,
equals([
[],
[$3, $cr, $lf, 1, 2, 3, $cr, $lf]
]));
sink.add([]);
expect(
results,
equals([
[],
[$3, $cr, $lf, 1, 2, 3, $cr, $lf],
[]
]));
sink.close();
expect(
results,
equals([
[],
[$3, $cr, $lf, 1, 2, 3, $cr, $lf],
[],
[$0, $cr, $lf, $cr, $lf],
]));
});
group('addSlice()', () {
test('adds bytes from the specified slice', () {
sink.addSlice([1, 2, 3, 4, 5], 1, 4, false);
expect(
results,
equals([
[$3, $cr, $lf, 2, 3, 4, $cr, $lf]
]));
});
test("doesn't add a header if the slice is empty", () {
sink.addSlice([1, 2, 3, 4, 5], 1, 1, false);
expect(results, equals([[]]));
});
test('adds a footer if isLast is true', () {
sink.addSlice([1, 2, 3, 4, 5], 1, 4, true);
expect(
results,
equals([
[$3, $cr, $lf, 2, 3, 4, $cr, $lf, $0, $cr, $lf, $cr, $lf]
]));
// Setting isLast shuld close the sink.
expect(() => sink.add([]), throwsStateError);
});
group('disallows', () {
test('start < 0', () {
expect(() => sink.addSlice([1, 2, 3, 4, 5], -1, 4, false),
throwsRangeError);
});
test('start > end', () {
expect(() => sink.addSlice([1, 2, 3, 4, 5], 3, 2, false),
throwsRangeError);
});
test('end > length', () {
expect(() => sink.addSlice([1, 2, 3, 4, 5], 1, 10, false),
throwsRangeError);
});
});
});
});
});
group('decoder', () {
test('parses chunked data', () {
expect(
chunkedCoding.decode([
$3,
$cr,
$lf,
1,
2,
3,
$cr,
$lf,
$4,
$cr,
$lf,
4,
5,
6,
7,
$cr,
$lf,
$0,
$cr,
$lf,
$cr,
$lf,
]),
equals([1, 2, 3, 4, 5, 6, 7]));
});
test('parses hex size', () {
final data = Iterable<int>.generate(0xA7).toList();
expect(
chunkedCoding.decode(
[$a, $7, $cr, $lf, ...data, $cr, $lf, $0, $cr, $lf, $cr, $lf]),
equals(data));
});
test('parses capital hex size', () {
final data = Iterable<int>.generate(0xA7).toList();
expect(
chunkedCoding.decode(
[$A, $7, $cr, $lf, ...data, $cr, $lf, $0, $cr, $lf, $cr, $lf]),
equals(data));
});
test('parses an empty message', () {
expect(chunkedCoding.decode([$0, $cr, $lf, $cr, $lf]), isEmpty);
});
group('disallows a message', () {
test('that ends without any input', () {
expect(() => chunkedCoding.decode([]), throwsFormatException);
});
test('that ends after the size', () {
expect(() => chunkedCoding.decode([$a]), throwsFormatException);
});
test('that ends after CR', () {
expect(() => chunkedCoding.decode([$a, $cr]), throwsFormatException);
});
test('that ends after LF', () {
expect(
() => chunkedCoding.decode([$a, $cr, $lf]), throwsFormatException);
});
test('that ends after insufficient bytes', () {
expect(() => chunkedCoding.decode([$a, $cr, $lf, 1, 2, 3]),
throwsFormatException);
});
test("that ends after a chunk's bytes", () {
expect(() => chunkedCoding.decode([$1, $cr, $lf, 1]),
throwsFormatException);
});
test("that ends after a chunk's CR", () {
expect(() => chunkedCoding.decode([$1, $cr, $lf, 1, $cr]),
throwsFormatException);
});
test("that ends atfter a chunk's LF", () {
expect(() => chunkedCoding.decode([$1, $cr, $lf, 1, $cr, $lf]),
throwsFormatException);
});
test('that ends after the empty chunk', () {
expect(
() => chunkedCoding.decode([$0, $cr, $lf]), throwsFormatException);
});
test('that ends after the closing CR', () {
expect(() => chunkedCoding.decode([$0, $cr, $lf, $cr]),
throwsFormatException);
});
test('with a chunk without a size', () {
expect(() => chunkedCoding.decode([$cr, $lf, $0, $cr, $lf, $cr, $lf]),
throwsFormatException);
});
test('with a chunk with a non-hex size', () {
expect(
() => chunkedCoding.decode([$q, $cr, $lf, $0, $cr, $lf, $cr, $lf]),
throwsFormatException);
});
});
group('with chunked conversion', () {
late List<List<int>> results;
late ByteConversionSink sink;
setUp(() {
results = [];
final controller = StreamController<List<int>>(sync: true);
controller.stream.listen(results.add);
sink = chunkedCoding.decoder.startChunkedConversion(controller.sink);
});
test('decodes each chunk of bytes', () {
sink.add([$4, $cr, $lf, 1, 2, 3, 4, $cr, $lf]);
expect(
results,
equals([
[1, 2, 3, 4]
]));
sink.add([$3, $cr, $lf, 5, 6, 7, $cr, $lf]);
expect(
results,
equals([
[1, 2, 3, 4],
[5, 6, 7]
]));
sink.add([$0, $cr, $lf, $cr, $lf]);
sink.close();
expect(
results,
equals([
[1, 2, 3, 4],
[5, 6, 7]
]));
});
test('handles empty chunks', () {
sink.add([]);
expect(results, isEmpty);
sink.add([$3, $cr, $lf, 1, 2, 3, $cr, $lf]);
expect(
results,
equals([
[1, 2, 3]
]));
sink.add([]);
expect(
results,
equals([
[1, 2, 3]
]));
sink.add([$0, $cr, $lf, $cr, $lf]);
sink.close();
expect(
results,
equals([
[1, 2, 3]
]));
});
test('throws if the sink is closed before the message is done', () {
sink.add([$3, $cr, $lf, 1, 2, 3]);
expect(() => sink.close(), throwsFormatException);
});
group('preserves state when a byte array ends', () {
test('within chunk size', () {
sink.add([$a]);
expect(results, isEmpty);
final data = Iterable<int>.generate(0xA7).toList();
sink.add([$7, $cr, $lf, ...data]);
expect(results, equals([data]));
});
test('after chunk size', () {
sink.add([$3]);
expect(results, isEmpty);
sink.add([$cr, $lf, 1, 2, 3]);
expect(
results,
equals([
[1, 2, 3]
]));
});
test('after CR', () {
sink.add([$3, $cr]);
expect(results, isEmpty);
sink.add([$lf, 1, 2, 3]);
expect(
results,
equals([
[1, 2, 3]
]));
});
test('after LF', () {
sink.add([$3, $cr, $lf]);
expect(results, isEmpty);
sink.add([1, 2, 3]);
expect(
results,
equals([
[1, 2, 3]
]));
});
test('after some bytes', () {
sink.add([$3, $cr, $lf, 1, 2]);
expect(
results,
equals([
[1, 2]
]));
sink.add([3]);
expect(
results,
equals([
[1, 2],
[3]
]));
});
test('after all bytes', () {
sink.add([$3, $cr, $lf, 1, 2, 3]);
expect(
results,
equals([
[1, 2, 3]
]));
sink.add([$cr, $lf, $3, $cr, $lf, 2, 3, 4, $cr, $lf]);
expect(
results,
equals([
[1, 2, 3],
[2, 3, 4]
]));
});
test('after a post-chunk CR', () {
sink.add([$3, $cr, $lf, 1, 2, 3, $cr]);
expect(
results,
equals([
[1, 2, 3]
]));
sink.add([$lf, $3, $cr, $lf, 2, 3, 4, $cr, $lf]);
expect(
results,
equals([
[1, 2, 3],
[2, 3, 4]
]));
});
test('after a post-chunk LF', () {
sink.add([$3, $cr, $lf, 1, 2, 3, $cr, $lf]);
expect(
results,
equals([
[1, 2, 3]
]));
sink.add([$3, $cr, $lf, 2, 3, 4, $cr, $lf]);
expect(
results,
equals([
[1, 2, 3],
[2, 3, 4]
]));
});
test('after empty chunk size', () {
sink.add([$0]);
expect(results, isEmpty);
sink.add([$cr, $lf, $cr, $lf]);
expect(results, isEmpty);
sink.close();
expect(results, isEmpty);
});
test('after first empty chunk CR', () {
sink.add([$0, $cr]);
expect(results, isEmpty);
sink.add([$lf, $cr, $lf]);
expect(results, isEmpty);
sink.close();
expect(results, isEmpty);
});
test('after first empty chunk LF', () {
sink.add([$0, $cr, $lf]);
expect(results, isEmpty);
sink.add([$cr, $lf]);
expect(results, isEmpty);
sink.close();
expect(results, isEmpty);
});
test('after second empty chunk CR', () {
sink.add([$0, $cr, $lf, $cr]);
expect(results, isEmpty);
sink.add([$lf]);
expect(results, isEmpty);
sink.close();
expect(results, isEmpty);
});
});
group('addSlice()', () {
test('adds bytes from the specified slice', () {
sink.addSlice([1, $3, $cr, $lf, 2, 3, 4, 5], 1, 7, false);
expect(
results,
equals([
[2, 3, 4]
]));
});
test("doesn't decode if the slice is empty", () {
sink.addSlice([1, 2, 3, 4, 5], 1, 1, false);
expect(results, isEmpty);
});
test('closes the sink if isLast is true', () {
sink.addSlice([1, $0, $cr, $lf, $cr, $lf, 7], 1, 6, true);
expect(results, isEmpty);
});
group('disallows', () {
test('start < 0', () {
expect(() => sink.addSlice([1, 2, 3, 4, 5], -1, 4, false),
throwsRangeError);
});
test('start > end', () {
expect(() => sink.addSlice([1, 2, 3, 4, 5], 3, 2, false),
throwsRangeError);
});
test('end > length', () {
expect(() => sink.addSlice([1, 2, 3, 4, 5], 1, 10, false),
throwsRangeError);
});
});
});
});
});
}