| // Copyright (c) 2012, 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:convert'; |
| import "dart:typed_data"; |
| import "package:expect/expect.dart"; |
| |
| main() { |
| for (var list in [ |
| <int>[], |
| [0x00], |
| [0xff, 0x00], |
| [0xff, 0xaa, 0x55], |
| [0x00, 0x01, 0x02, 0x03], |
| new Iterable<int>.generate(13).toList(), |
| new Iterable<int>.generate(254).toList(), |
| new Iterable<int>.generate(255).toList(), |
| new Iterable<int>.generate(256).toList() |
| ]) { |
| testRoundtrip(list, "List#${list.length}"); |
| testRoundtrip(new Uint8List.fromList(list), "Uint8List#${list.length}"); |
| } |
| testErrors(); |
| testIssue25577(); |
| |
| // Decoder is lenient with mixed styles. |
| Expect.listEquals([0xfb, 0xff, 0xbf, 0x00], base64.decode("-_+/AA%3D=")); |
| Expect.listEquals([0xfb, 0xff, 0xbf, 0x00], base64.decode("-_+/AA=%3D")); |
| } |
| |
| void testRoundtrip(List<int> list, String name) { |
| // Direct. |
| String encodedNormal = base64.encode(list); |
| String encodedPercent = encodedNormal.replaceAll("=", "%3D"); |
| String uriEncoded = base64Url.encode(list); |
| String expectedUriEncoded = |
| encodedNormal.replaceAll("+", "-").replaceAll("/", "_"); |
| Expect.equals(expectedUriEncoded, uriEncoded); |
| |
| List result = base64.decode(encodedNormal); |
| Expect.listEquals(list, result, name); |
| result = base64.decode(encodedPercent); |
| Expect.listEquals(list, result, name); |
| result = base64.decode(uriEncoded); |
| Expect.listEquals(list, result, name); |
| |
| int increment = list.length ~/ 7 + 1; |
| // Chunked. |
| for (int i = 0; i < list.length; i += increment) { |
| for (int j = i; j < list.length; j += increment) { |
| // Normal |
| { |
| // Using add/close |
| var results; |
| var sink = new ChunkedConversionSink<String>.withCallback((v) { |
| results = v; |
| }); |
| var encoder = base64.encoder.startChunkedConversion(sink); |
| encoder.add(list.sublist(0, i)); |
| encoder.add(list.sublist(i, j)); |
| encoder.add(list.sublist(j, list.length)); |
| encoder.close(); |
| var name = "0-$i-$j-${list.length}: list"; |
| Expect.equals(encodedNormal, results.join(""), name); |
| } |
| { |
| // Using addSlice |
| var results; |
| var sink = new ChunkedConversionSink<String>.withCallback((v) { |
| results = v; |
| }); |
| var encoder = base64.encoder.startChunkedConversion(sink); |
| encoder.addSlice(list, 0, i, false); |
| encoder.addSlice(list, i, j, false); |
| encoder.addSlice(list, j, list.length, true); |
| var name = "0-$i-$j-${list.length}: $list"; |
| Expect.equals(encodedNormal, results.join(""), name); |
| } |
| // URI |
| { |
| // Using add/close |
| var results; |
| var sink = new ChunkedConversionSink<String>.withCallback((v) { |
| results = v; |
| }); |
| var encoder = base64Url.encoder.startChunkedConversion(sink); |
| encoder.add(list.sublist(0, i)); |
| encoder.add(list.sublist(i, j)); |
| encoder.add(list.sublist(j, list.length)); |
| encoder.close(); |
| var name = "0-$i-$j-${list.length}: list"; |
| Expect.equals(uriEncoded, results.join(""), name); |
| } |
| { |
| // Using addSlice |
| var results; |
| var sink = new ChunkedConversionSink<String>.withCallback((v) { |
| results = v; |
| }); |
| var encoder = base64Url.encoder.startChunkedConversion(sink); |
| encoder.addSlice(list, 0, i, false); |
| encoder.addSlice(list, i, j, false); |
| encoder.addSlice(list, j, list.length, true); |
| var name = "0-$i-$j-${list.length}: $list"; |
| Expect.equals(uriEncoded, results.join(""), name); |
| } |
| } |
| } |
| // Using .encode |
| Expect.equals(uriEncoded, base64Url.encode(list), ".encode($list)"); |
| // Using base64UrlEncode |
| Expect.equals(uriEncoded, base64UrlEncode(list), ".encode($list)"); |
| |
| for (var encoded in [encodedNormal, encodedPercent, uriEncoded]) { |
| increment = encoded.length ~/ 7 + 1; |
| for (int i = 0; i < encoded.length; i += increment) { |
| for (int j = i; j < encoded.length; j += increment) { |
| { |
| // Using add/close |
| List<List<int>> results; |
| var sink = new ChunkedConversionSink<List<int>>.withCallback((v) { |
| results = v; |
| }); |
| var decoder = base64.decoder.startChunkedConversion(sink); |
| decoder.add(encoded.substring(0, i)); |
| decoder.add(encoded.substring(i, j)); |
| decoder.add(encoded.substring(j, encoded.length)); |
| decoder.close(); |
| var name = "0-$i-$j-${encoded.length}: $encoded"; |
| Expect.listEquals(list, results.expand((x) => x).toList(), name); |
| } |
| { |
| // Using addSlice |
| List<List<int>> results; |
| var sink = new ChunkedConversionSink<List<int>>.withCallback((v) { |
| results = v; |
| }); |
| var decoder = base64.decoder.startChunkedConversion(sink); |
| decoder.addSlice(encoded, 0, i, false); |
| decoder.addSlice(encoded, i, j, false); |
| decoder.addSlice(encoded, j, encoded.length, true); |
| var name = "0-$i-$j-${encoded.length}: $encoded"; |
| Expect.listEquals(list, results.expand((x) => x).toList(), name); |
| } |
| } |
| } |
| Expect.listEquals(list, base64.decode(encoded), ".decode($encoded)"); |
| Expect.listEquals(list, base64Url.decode(encoded), "url.decode($encoded)"); |
| Expect.listEquals(list, base64Decode(encoded), "base64Decode($encoded)"); |
| } |
| } |
| |
| void testErrors() { |
| void badChunkDecode(List<String> list) { |
| Expect.throwsFormatException(() { |
| var sink = new ChunkedConversionSink<List<int>>.withCallback((v) { |
| Expect.fail("Should have thrown: chunk $list"); |
| }); |
| var c = base64.decoder.startChunkedConversion(sink); |
| for (String string in list) { |
| c.add(string); |
| } |
| c.close(); |
| }, "chunk $list"); |
| } |
| |
| void badDecode(String string) { |
| Expect.throwsFormatException(() => base64.decode(string), string); |
| Expect.throwsFormatException(() => base64Url.decode(string), string); |
| badChunkDecode([string]); |
| badChunkDecode(["", string]); |
| badChunkDecode([string, ""]); |
| badChunkDecode([string, "", ""]); |
| badChunkDecode(["", string, ""]); |
| } |
| |
| badDecode("A"); |
| badDecode("AA"); |
| badDecode("AAA"); |
| badDecode("AAAAA"); |
| badDecode("AAAAAA"); |
| badDecode("AAAAAAA"); |
| badDecode("AAAA="); |
| badDecode("AAAA=="); |
| badDecode("AAAA==="); |
| badDecode("AAAA===="); |
| badDecode("AAAA%"); |
| badDecode("AAAA%3"); |
| badDecode("AAAA%3D"); |
| badDecode("AAA%3D%"); |
| badDecode("AAA%3D="); |
| badDecode("A="); |
| badDecode("A=A"); |
| badDecode("A=="); |
| badDecode("A==A"); |
| badDecode("A==="); |
| badDecode("===="); |
| badDecode("AA="); |
| badDecode("AA%="); |
| badDecode("AA%3"); |
| badDecode("AA%3D"); |
| badDecode("AA==="); |
| badDecode("AAA=="); |
| badDecode("AAA=AAAA"); |
| badDecode("AAA\x00"); |
| badDecode("AAA=\x00"); |
| badDecode("AAA\x80"); |
| badDecode("AAA\xFF"); |
| badDecode("AAA\u{141}"); |
| badDecode("AAA\u{1041}"); |
| badDecode("AAA\u{10041}"); |
| badDecode("AA\u{141}="); |
| badDecode("AA\u{1041}="); |
| badDecode("AA\u{10041}="); |
| |
| var alphabet = |
| "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz+/-_"; |
| var units = alphabet.codeUnits; |
| for (int i = 0; i < 128; i++) { |
| if (!units.contains(i)) { |
| badDecode(new String.fromCharCode(i) * 4); |
| } |
| } |
| |
| badChunkDecode(["A", "A"]); |
| badChunkDecode(["A", "A", "A"]); |
| badChunkDecode(["A", "A", "="]); |
| badChunkDecode(["A", "A", "=", ""]); |
| badChunkDecode(["A", "A", "=", "=", "="]); |
| badChunkDecode(["AAA", "=="]); |
| badChunkDecode(["A", "A", "A"]); |
| badChunkDecode(["AAA", ""]); |
| badChunkDecode(["AA=", ""]); |
| badChunkDecode(["AB==", ""]); |
| |
| badChunkEncode(List<int> list) { |
| for (int i = 0; i < list.length; i++) { |
| for (int j = 0; j < list.length; j++) { |
| Expect.throwsArgumentError(() { |
| var sink = new ChunkedConversionSink<String>.withCallback((v) { |
| Expect.fail("Should have thrown: chunked $list"); |
| }); |
| var c = base64.encoder.startChunkedConversion(sink); |
| c.add(list.sublist(0, i)); |
| c.add(list.sublist(i, j)); |
| c.add(list.sublist(j, list.length)); |
| c.close(); |
| }, "chunk $list"); |
| } |
| } |
| for (int i = 0; i < list.length; i++) { |
| for (int j = 0; j < list.length; j++) { |
| Expect.throwsArgumentError(() { |
| var sink = new ChunkedConversionSink<String>.withCallback((v) { |
| Expect.fail("Should have thrown: chunked $list"); |
| }); |
| var c = base64.encoder.startChunkedConversion(sink); |
| c.addSlice(list, 0, i, false); |
| c.addSlice(list, i, j, false); |
| c.addSlice(list, j, list.length, true); |
| }, "chunk $list"); |
| } |
| } |
| } |
| |
| void badEncode(int invalid) { |
| Expect.throwsArgumentError(() => base64.encode([invalid]), "$invalid"); |
| Expect.throwsArgumentError( |
| () => base64.encode([0, invalid, 0]), "$invalid"); |
| badChunkEncode([invalid]); |
| badChunkEncode([0, invalid]); |
| badChunkEncode([0, 0, invalid]); |
| badChunkEncode([0, invalid, 0]); |
| badChunkEncode([invalid, 0, 0]); |
| } |
| |
| badEncode(-1); |
| badEncode(0x100); |
| badEncode(0x1000); |
| badEncode(0x10000); |
| badEncode(0x100000000); // //# 01: ok |
| badEncode(0x7000000000000000); // //# 01: continued |
| } |
| |
| void testIssue25577() { |
| // Regression test for http://dartbug.com/25577. |
| StringConversionSink decodeSink = |
| base64.decoder.startChunkedConversion(new TestSink<List<int>>()); |
| ByteConversionSink encodeSink = |
| base64.encoder.startChunkedConversion(new TestSink<String>()); |
| } |
| |
| // Implementation of Sink<T> to test type constraints. |
| class TestSink<T> implements Sink<T> { |
| void add(T value) {} |
| void close() {} |
| } |