blob: 85fa759e16b72da7fac74e1ae24dd2acf1bc107c [file] [log] [blame]
// 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.
library analyzer_cli.test.utils;
import 'dart:io';
import 'dart:mirrors';
import 'package:analyzer/analyzer.dart';
import 'package:path/path.dart' as pathos;
/// Gets the test directory in a way that works with package:test
/// See <> for more info.
final String testDirectory = pathos.dirname(
pathos.fromUri((reflectClass(_TestUtils).owner as LibraryMirror).uri));
/// Returns the string representation of the [AnalyzerErrorGroup] thrown when
/// parsing [contents] as a Dart file. If [contents] doesn't throw any errors,
/// this will return null.
/// This replaces the filename in the error string with its basename, since the
/// full path will vary from machine to machine. It also replaces the exception
/// message with "..." to decouple these tests from the specific exception
/// messages.
String errorsForFile(String contents) {
return withTempDir((temp) {
var path = pathos.join(temp, 'test.dart');
new File(path).writeAsStringSync(contents);
try {
} on AnalyzerErrorGroup catch (e) {
return e.toString().replaceAllMapped(
new RegExp(r"^(Error on line \d+ of )((?:[A-Z]+:)?[^:]+): .*$",
multiLine: true),
(match) => match[1] + pathos.basename(match[2]) + ': ...');
return null;
/// Creates a temporary directory and passes its path to [fn]. Once [fn]
/// completes, the temporary directory and all its contents will be deleted.
/// Returns the return value of [fn].
dynamic withTempDir(fn(String path)) {
var tempDir = Directory.systemTemp.createTempSync('analyzer_').path;
try {
return fn(tempDir);
} finally {
new Directory(tempDir).deleteSync(recursive: true);
class _TestUtils {}