blob: 877cfb2263bacbd10358da47ac2e77d74a963d99 [file] [log] [blame]
// 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.
library unittest.utils;
import 'package:stack_trace/stack_trace.dart';
/// Indent each line in [str] by two spaces.
String indent(String str) =>
str.replaceAll(new RegExp("^", multiLine: true), " ");
/// A pair of values.
class Pair<E, F> {
final E first;
final F last;
Pair(this.first, this.last);
String toString() => '($first, $last)';
bool operator ==(other) {
if (other is! Pair) return false;
return other.first == first && other.last == last;
int get hashCode => first.hashCode ^ last.hashCode;
/// Returns a Trace object from a StackTrace object or a String, or the
/// unchanged input if formatStacks is false;
Trace getTrace(stack, bool formatStacks, bool filterStacks) {
Trace trace;
if (stack == null || !formatStacks) return null;
if (stack is String) {
trace = new Trace.parse(stack);
} else if (stack is StackTrace) {
trace = new Trace.from(stack);
} else {
throw new Exception('Invalid stack type ${stack.runtimeType} for $stack.');
if (!filterStacks) return trace;
// Format the stack trace by removing everything above TestCase._runTest,
// which is usually going to be irrelevant. Also fold together unittest and
// core library calls so only the function the user called is visible.
return new Trace(trace.frames.takeWhile((frame) {
return frame.package != 'unittest' || frame.member != 'TestCase._runTest';
})).terse.foldFrames((frame) => frame.package == 'unittest' || frame.isCore);