pkgs/path/test/utils.dart

// 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.

import 'package:path/path.dart' as p;
import 'package:test/test.dart';

/// A matcher for a closure that throws a [p.PathException].
final throwsPathException = throwsA(const TypeMatcher<p.PathException>());

void expectEquals(p.Context context, String path1, String path2) {
  expect(
    context.equals(path1, path2),
    isTrue,
    reason: 'Expected "$path1" to equal "$path2".',
  );
  expect(
    context.equals(path2, path1),
    isTrue,
    reason: 'Expected "$path2" to equal "$path1".',
  );
  expect(
    context.hash(path1),
    equals(context.hash(path2)),
    reason: 'Expected "$path1" to hash the same as "$path2".',
  );
}

void expectNotEquals(
  p.Context context,
  String path1,
  String path2, {
  bool allowSameHash = false,
}) {
  expect(
    context.equals(path1, path2),
    isFalse,
    reason: 'Expected "$path1" not to equal "$path2".',
  );
  expect(
    context.equals(path2, path1),
    isFalse,
    reason: 'Expected "$path2" not to equal "$path1".',
  );

  // Hash collisions are allowed, but the test author should be explicitly aware
  // when they occur.
  if (allowSameHash) return;
  expect(
    context.hash(path1),
    isNot(equals(context.hash(path2))),
    reason: 'Expected "$path1" not to hash the same as "$path2".',
  );
}