1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
|
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Reactive.Disposables;
using System.Reactive.Linq;
#if WINDOWS8
using Microsoft.VisualStudio.TestPlatform.UnitTestFramework;
#else
using Microsoft.VisualStudio.TestTools.UnitTesting;
#endif
namespace Microsoft.Reactive.Testing
{
/// <summary>
/// Helper class to write asserts in unit tests for applications and libraries built using Reactive Extensions.
/// </summary>
public static class ReactiveAssert
{
static string Message<T>(IEnumerable<T> actual, IEnumerable<T> expected)
{
var sb = new StringBuilder();
sb.AppendLine();
sb.Append("Expected: [");
sb.Append(string.Join(", ", expected.Select(x => x.ToString()).ToArray()));
sb.Append("]");
sb.AppendLine();
sb.Append("Actual..: [");
sb.Append(string.Join(", ", actual.Select(x => x.ToString()).ToArray()));
sb.Append("]");
sb.AppendLine();
return sb.ToString();
}
/// <summary>
/// Asserts that both enumerable sequences have equal length and equal elements.
/// </summary>
/// <typeparam name="T">The type of the elements in the sequence.</typeparam>
/// <param name="expected">Expected sequence.</param>
/// <param name="actual">Actual sequence to compare against the expected one.</param>
/// <exception cref="ArgumentNullException"><paramref name="expected"/> or <paramref name="actual"/> is null.</exception>
public static void AreElementsEqual<T>(IEnumerable<T> expected, IEnumerable<T> actual)
{
if (expected == null)
throw new ArgumentNullException("expected");
if (actual == null)
throw new ArgumentNullException("actual");
if (!expected.SequenceEqual(actual))
Assert.Fail(Message(actual, expected));
}
/// <summary>
/// Asserts that both enumerable sequences have equal length and equal elements.
/// </summary>
/// <typeparam name="T">The type of the elements in the sequence.</typeparam>
/// <param name="expected">Expected sequence.</param>
/// <param name="actual">Actual sequence to compare against the expected one.</param>
/// <param name="message">Error message for assert failure.</param>
/// <exception cref="ArgumentNullException"><paramref name="expected"/> or <paramref name="actual"/> is null.</exception>
public static void AreElementsEqual<T>(IEnumerable<T> expected, IEnumerable<T> actual, string message)
{
if (expected == null)
throw new ArgumentNullException("expected");
if (actual == null)
throw new ArgumentNullException("actual");
if (!expected.SequenceEqual(actual))
Assert.Fail(message);
}
/// <summary>
/// Asserts that both observable sequences have equal length and equal notifications.
/// </summary>
/// <typeparam name="T">The type of the elements in the sequence.</typeparam>
/// <param name="expected">Expected sequence.</param>
/// <param name="actual">Actual sequence to compare against the expected one.</param>
/// <exception cref="ArgumentNullException"><paramref name="expected"/> or <paramref name="actual"/> is null.</exception>
public static void AreElementsEqual<T>(IObservable<T> expected, IObservable<T> actual)
{
if (expected == null)
throw new ArgumentNullException("expected");
if (actual == null)
throw new ArgumentNullException("actual");
AreElementsEqual(expected.Materialize().ToEnumerable(), actual.Materialize().ToEnumerable());
}
/// <summary>
/// Asserts that both observable sequences have equal length and equal elements.
/// </summary>
/// <typeparam name="T">The type of the elements in the sequence.</typeparam>
/// <param name="expected">Expected sequence.</param>
/// <param name="actual">Actual sequence to compare against the expected one.</param>
/// <param name="message">Error message for assert failure.</param>
/// <exception cref="ArgumentNullException"><paramref name="expected"/> or <paramref name="actual"/> is null.</exception>
public static void AreElementsEqual<T>(IObservable<T> expected, IObservable<T> actual, string message)
{
if (expected == null)
throw new ArgumentNullException("expected");
if (actual == null)
throw new ArgumentNullException("actual");
AreElementsEqual(expected.Materialize().ToEnumerable(), actual.Materialize().ToEnumerable(), message);
}
/// <summary>
/// Asserts that the given action throws an exception of the type specified in the generic parameter, or a subtype thereof.
/// </summary>
/// <typeparam name="TException">Type of the exception to check for.</typeparam>
/// <param name="action">Action to run.</param>
/// <exception cref="ArgumentNullException"><paramref name="action"/> is null.</exception>
public static void Throws<TException>(Action action) where TException : Exception
{
if (action == null)
throw new ArgumentNullException("action");
var failed = false;
try
{
action();
failed = true;
}
catch (TException)
{
}
catch (Exception ex)
{
Assert.Fail(string.Format(CultureInfo.CurrentCulture, "Expected {0} threw {1}.\r\n\r\nStack trace:\r\n{2}", typeof(TException).Name, ex.GetType().Name, ex.StackTrace));
}
if (failed)
Assert.Fail(string.Format(CultureInfo.CurrentCulture, "Expected {0}.", typeof(TException).Name));
}
/// <summary>
/// Asserts that the given action throws an exception of the type specified in the generic parameter, or a subtype thereof.
/// </summary>
/// <typeparam name="TException">Type of the exception to check for.</typeparam>
/// <param name="action">Action to run.</param>
/// <param name="message">Error message for assert failure.</param>
/// <exception cref="ArgumentNullException"><paramref name="action"/> is null.</exception>
public static void Throws<TException>(Action action, string message) where TException : Exception
{
if (action == null)
throw new ArgumentNullException("action");
var failed = false;
try
{
action();
failed = true;
}
catch (TException)
{
}
catch
{
Assert.Fail(message);
}
if (failed)
Assert.Fail(message);
}
/// <summary>
/// Asserts that the given action throws the specified exception.
/// </summary>
/// <typeparam name="TException">Type of the exception to check for.</typeparam>
/// <param name="exception">Exception to assert being thrown.</param>
/// <param name="action">Action to run.</param>
/// <exception cref="ArgumentNullException"><paramref name="action"/> is null.</exception>
public static void Throws<TException>(TException exception, Action action) where TException : Exception
{
if (action == null)
throw new ArgumentNullException("action");
var failed = false;
try
{
action();
failed = true;
}
catch (TException ex)
{
Assert.AreSame(exception, ex);
}
catch (Exception ex)
{
Assert.Fail(string.Format(CultureInfo.CurrentCulture, "Expected {0} threw {1}.\r\n\r\nStack trace:\r\n{2}", typeof(TException).Name, ex.GetType().Name, ex.StackTrace));
}
if (failed)
Assert.Fail(string.Format(CultureInfo.CurrentCulture, "Expected {0}.", typeof(TException).Name));
}
/// <summary>
/// Asserts that the given action throws the specified exception.
/// </summary>
/// <typeparam name="TException">Type of the exception to check for.</typeparam>
/// <param name="exception">Exception to assert being thrown.</param>
/// <param name="action">Action to run.</param>
/// <param name="message">Error message for assert failure.</param>
/// <exception cref="ArgumentNullException"><paramref name="action"/> is null.</exception>
public static void Throws<TException>(TException exception, Action action, string message) where TException : Exception
{
if (action == null)
throw new ArgumentNullException("action");
var failed = false;
try
{
action();
failed = true;
}
catch (TException ex)
{
Assert.AreSame(exception, ex);
}
catch
{
Assert.Fail(message);
}
if (failed)
Assert.Fail(message);
}
/// <summary>
/// Asserts that both enumerable sequences have equal length and equal elements.
/// </summary>
/// <typeparam name="T">The type of the elements in the sequence.</typeparam>
/// <param name="actual">Actual sequence to compare against the expected one.</param>
/// <param name="expected">Expected sequence.</param>
/// <exception cref="ArgumentNullException"><paramref name="expected"/> or <paramref name="actual"/> is null.</exception>
public static void AssertEqual<T>(this IEnumerable<T> actual, IEnumerable<T> expected)
{
if (actual == null)
throw new ArgumentNullException("actual");
if (expected == null)
throw new ArgumentNullException("expected");
ReactiveAssert.AreElementsEqual(expected, actual);
}
/// <summary>
/// Asserts the enumerable sequence has the expected elements.
/// </summary>
/// <typeparam name="T">The type of the elements in the sequence.</typeparam>
/// <param name="actual">Actual sequence to compare against the expected elements.</param>
/// <param name="expected">Expected elements.</param>
/// <exception cref="ArgumentNullException"><paramref name="expected"/> or <paramref name="actual"/> is null.</exception>
public static void AssertEqual<T>(this IEnumerable<T> actual, params T[] expected)
{
if (actual == null)
throw new ArgumentNullException("actual");
if (expected == null)
throw new ArgumentNullException("expected");
ReactiveAssert.AreElementsEqual(expected, actual);
}
/// <summary>
/// Asserts that both observable sequences have equal length and equal notifications.
/// </summary>
/// <typeparam name="T">The type of the elements in the sequence.</typeparam>
/// <param name="actual">Actual sequence to compare against the expected one.</param>
/// <param name="expected">Expected sequence.</param>
/// <exception cref="ArgumentNullException"><paramref name="expected"/> or <paramref name="actual"/> is null.</exception>
public static void AssertEqual<T>(this IObservable<T> actual, IObservable<T> expected)
{
if (actual == null)
throw new ArgumentNullException("actual");
if (expected == null)
throw new ArgumentNullException("expected");
ReactiveAssert.AreElementsEqual(expected, actual);
}
}
}
|
