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// Copyright (c) 2013, 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.
// @dart = 2.9
import 'dart:async';
import 'dart:io';
import 'dart:typed_data';
import "package:async_helper/async_helper.dart";
import "package:expect/expect.dart";
void testZLibDeflateEmpty() {
asyncStart();
var controller = new StreamController(sync: true);
controller.stream.transform(new ZLibEncoder(gzip: false, level: 6)).fold([],
(buffer, data) {
buffer.addAll(data);
return buffer;
}).then((data) {
Expect.listEquals([120, 156, 3, 0, 0, 0, 0, 1], data);
asyncEnd();
});
controller.close();
}
void testZLibDeflateEmptyGzip() {
asyncStart();
var controller = new StreamController(sync: true);
controller.stream
.transform(new ZLibEncoder(gzip: true, level: 6))
.fold(<int>[], (buffer, data) {
buffer.addAll(data);
return buffer;
}).then((data) {
Expect.isTrue(data.length > 0);
Expect.listEquals([], new ZLibDecoder().convert(data));
asyncEnd();
});
controller.close();
}
void testZLibDeflate(List<int> data) {
asyncStart();
var controller = new StreamController(sync: true);
controller.stream.transform(new ZLibEncoder(gzip: false, level: 6)).fold([],
(buffer, data) {
buffer.addAll(data);
return buffer;
}).then((data) {
Expect.listEquals([
120,
156,
99,
96,
100,
98,
102,
97,
101,
99,
231,
224,
4,
0,
0,
175,
0,
46
], data);
asyncEnd();
});
controller.add(data);
controller.close();
}
void testZLibDeflateGZip(List<int> data) {
asyncStart();
var controller = new StreamController(sync: true);
controller.stream.transform(new ZLibEncoder(gzip: true)).fold([],
(buffer, data) {
buffer.addAll(data);
return buffer;
}).then((data) {
Expect.equals(30, data.length);
Expect.listEquals(
[
99,
96,
100,
98,
102,
97,
101,
99,
231,
224,
4,
0,
70,
215,
108,
69,
10,
0,
0,
0
],
// Skip header, as it can change.
data.sublist(10));
asyncEnd();
});
controller.add(data);
controller.close();
}
void testZLibDeflateRaw(List<int> data) {
asyncStart();
var controller = new StreamController(sync: true);
controller.stream.transform(new ZLibEncoder(raw: true, level: 6)).fold([],
(buffer, data) {
buffer.addAll(data);
return buffer;
}).then((data) {
Expect
.listEquals([99, 96, 100, 98, 102, 97, 101, 99, 231, 224, 4, 0], data);
asyncEnd();
});
controller.add(data);
controller.close();
}
void testZLibDeflateInvalidLevel() {
test2(gzip, level) {
[true, false].forEach((gzip) {
[-2, -20, 10, 42, null, "9"].forEach((level) {
Expect.throwsArgumentError(
() => new ZLibEncoder(gzip: gzip, level: level),
"'level' must be in range -1..9");
});
});
}
;
}
void testZLibInflate(List<int> data) {
[true, false].forEach((gzip) {
[
ZLibOption.strategyFiltered,
ZLibOption.strategyHuffmanOnly,
ZLibOption.strategyRle,
ZLibOption.strategyFixed,
ZLibOption.strategyDefault,
].forEach((strategy) {
[3, 6, 9].forEach((level) {
asyncStart();
var controller = new StreamController(sync: true);
controller.stream
.transform(
new ZLibEncoder(gzip: gzip, level: level, strategy: strategy))
.transform(new ZLibDecoder())
.fold([], (buffer, data) {
buffer.addAll(data);
return buffer;
}).then((inflated) {
Expect.listEquals(data, inflated);
asyncEnd();
});
controller.add(data);
controller.close();
});
});
});
}
void testZLibInflateRaw(List<int> data) {
[3, 6, 9].forEach((level) {
asyncStart();
var controller = new StreamController(sync: true);
controller.stream
.transform(new ZLibEncoder(raw: true, level: level))
.transform(new ZLibDecoder(raw: true))
.fold([], (buffer, data) {
buffer.addAll(data);
return buffer;
}).then((inflated) {
Expect.listEquals(data, inflated);
asyncEnd();
});
controller.add(data);
controller.close();
});
}
void testZLibInflateSync(List<int> data) {
[true, false].forEach((gzip) {
[3, 6, 9].forEach((level) {
var encoded = new ZLibEncoder(gzip: gzip, level: level).convert(data);
var decoded = new ZLibDecoder().convert(encoded);
Expect.listEquals(data, decoded);
});
});
}
void testZlibInflateThrowsWithSmallerWindow() {
var data = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
var encoder = new ZLibEncoder(windowBits: 10);
var encodedData = encoder.convert(data);
var decoder = new ZLibDecoder(windowBits: 8);
Expect.throws(() => decoder.convert(encodedData));
}
void testZlibInflateWithLargerWindow() {
var data = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
[true, false].forEach((gzip) {
[3, 6, 9].forEach((level) {
asyncStart();
var controller = new StreamController(sync: true);
controller.stream
.transform(new ZLibEncoder(gzip: gzip, level: level, windowBits: 8))
.transform(new ZLibDecoder(windowBits: 10))
.fold([], (buffer, data) {
buffer.addAll(data);
return buffer;
}).then((inflated) {
Expect.listEquals(data, inflated);
asyncEnd();
});
controller.add(data);
controller.close();
});
});
}
void testZlibWithDictionary() {
var dict = [102, 111, 111, 98, 97, 114];
var data = [98, 97, 114, 102, 111, 111];
[3, 6, 9].forEach((level) {
var encoded = new ZLibEncoder(level: level, dictionary: dict).convert(data);
var decoded = new ZLibDecoder(dictionary: dict).convert(encoded);
Expect.listEquals(data, decoded);
});
}
var generateListTypes = [
(list) => list,
(list) => new Uint8List.fromList(list),
(list) => new Int8List.fromList(list),
(list) => new Uint16List.fromList(list),
(list) => new Int16List.fromList(list),
(list) => new Uint32List.fromList(list),
(list) => new Int32List.fromList(list),
];
var generateViewTypes = [
(list) => new Uint8List.view((new Uint8List.fromList(list)).buffer, 1, 8),
(list) => new Int8List.view((new Int8List.fromList(list)).buffer, 1, 8),
(list) => new Uint16List.view((new Uint16List.fromList(list)).buffer, 2, 6),
(list) => new Int16List.view((new Int16List.fromList(list)).buffer, 2, 6),
(list) => new Uint32List.view((new Uint32List.fromList(list)).buffer, 4, 4),
(list) => new Int32List.view((new Int32List.fromList(list)).buffer, 4, 4),
];
void main() {
asyncStart();
testZLibDeflateEmpty();
testZLibDeflateEmptyGzip();
testZLibDeflateInvalidLevel();
generateListTypes.forEach((f) {
var data = f([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
testZLibDeflate(data);
testZLibDeflateGZip(data);
testZLibDeflateRaw(data);
testZLibInflate(data);
testZLibInflateSync(data);
testZLibInflateRaw(data);
});
generateViewTypes.forEach((f) {
var data = f([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
testZLibInflate(data);
testZLibInflateSync(data);
testZLibInflateRaw(data);
});
testZlibInflateThrowsWithSmallerWindow();
testZlibInflateWithLargerWindow();
testZlibWithDictionary();
asyncEnd();
}