| // Copyright (c) 2015, 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. |
| |
| const sampleText = "Sample text file."; |
| |
| main() async { |
| const uriText = "package:package_test_data/resources/sample.txt"; |
| const resource = const Resource(uriText); |
| |
| if (resource.uri != Uri.parse(uriText)) { |
| throw "Incorrect URI: ${resource.uri}"; |
| } |
| |
| var text = await resource.readAsString(); |
| if (!text.startsWith("Sample text file.")) { |
| throw "Incorrect reading of text file: $text"; |
| } |
| |
| var bytes = await resource.readAsBytes(); |
| if (!compareBytes(bytes, sampleText.codeUnits)) { |
| throw "Incorrect reading of bytes: $bytes"; |
| } |
| |
| var streamBytes = []; |
| await for (var byteSlice in resource.openRead()) { |
| streamBytes.addAll(byteSlice); |
| } |
| if (!compareBytes(streamBytes, sampleText.codeUnits)) { |
| throw "Incorrect reading of bytes: $bytes"; |
| } |
| |
| if (!compareBytes(streamBytes, bytes)) { |
| throw "Inconsistent reading of bytes: $bytes / $streamBytes"; |
| } |
| } |
| |
| /// Checks that [bytes] starts with [expectedBytes]. |
| /// |
| /// The bytes may be longer (because the test file is a text file and its |
| /// terminating line ending may be mangled on some platforms). |
| bool compareBytes(bytes, expectedBytes) { |
| if (bytes.length < expectedBytes.length) return false; |
| for (int i = 0; i < expectedBytes.length; i++) { |
| if (bytes[i] != expectedBytes[i]) return false; |
| } |
| return true; |
| } |