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
|
//
// GTMSignalHandlerTest.m
//
// Copyright 2008 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy
// of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
//
#import "GTMSenTestCase.h"
#import "GTMSignalHandler.h"
#pragma clang diagnostic push
// Ignore all of the deprecation warnings for GTMRegex
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
@interface GTMSignalHandlerTest : GTMTestCase
@end
@interface SignalCounter : NSObject {
int signalCount_;
int lastSeenSignal_;
}
- (int)count;
- (int)lastSeen;
- (void)countSignal:(int)signo;
+ (id)signalCounter;
@end // SignalCounter
@implementation SignalCounter
+ (id)signalCounter {
return [[[self alloc] init] autorelease];
}
- (int)count {
return signalCount_;
}
- (int)lastSeen {
return lastSeenSignal_;
}
// Count the number of times this signal handler has fired.
- (void)countSignal:(int)signo {
signalCount_++;
lastSeenSignal_ = signo;
}
@end
@implementation GTMSignalHandlerTest
- (void)nomnomnom:(int)blah {
XCTFail(@"Should never be called!");
}
- (void)testNillage {
GTMSignalHandler *handler;
// Just an init should return nil.
handler = [[[GTMSignalHandler alloc] init] autorelease];
XCTAssertNil(handler);
// Zero signal should return nil as well.
handler = [[[GTMSignalHandler alloc]
initWithSignal:0
target:self
action:@selector(nomnomnom:)] autorelease];
XCTAssertNil(handler);
}
- (void)testSingleHandler {
// SIGIO and SIGWINCH were chosen for this test because LLDB does not trap
// them which allows you to run this test under the debugger.
// If you need to use other signals and the debugger is getting annoying
// https://stackoverflow.com/questions/11984051/how-to-tell-lldb-debugger-not-to-handle-sigbus
SignalCounter *counter = [SignalCounter signalCounter];
// Raising our signals off of a background queue becuase raising them
// off of dispatch_main_queue does not work with a CFRunLoop.
// https://openradar.appspot.com/radar?id=5030997057863680
dispatch_queue_t raiseQueue =
dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
const int deltaT = 5000000;
XCTAssertNotNil(counter);
GTMSignalHandler *handler = [[[GTMSignalHandler alloc]
initWithSignal:SIGWINCH
target:counter
action:@selector(countSignal:)]
autorelease];
XCTAssertNotNil(handler);
[self expectationForPredicate:
[NSPredicate predicateWithFormat:@"self.lastSeen == %d", SIGWINCH]
evaluatedWithObject:counter handler:NULL];
[self expectationForPredicate:
[NSPredicate predicateWithFormat:@"self.count == 1"]
evaluatedWithObject:counter handler:NULL];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, deltaT), raiseQueue, ^{
// Using dispatch_after to make sure our signal is sent AFTER the runloop
// is being spun in waitForExpectationsWithTimeout.
raise(SIGWINCH);
});
[self waitForExpectationsWithTimeout:5 handler:NULL];
[self expectationForPredicate:
[NSPredicate predicateWithFormat:@"self.lastSeen == %d", SIGWINCH]
evaluatedWithObject:counter handler:NULL];
[self expectationForPredicate:
[NSPredicate predicateWithFormat:@"self.count == 2"]
evaluatedWithObject:counter handler:NULL];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, deltaT), raiseQueue, ^{
raise(SIGWINCH);
});
[self waitForExpectationsWithTimeout:5 handler:NULL];
// create a second one to make sure we're sending data where we want
SignalCounter *counter2 = [SignalCounter signalCounter];
XCTAssertNotNil(counter2);
[[[GTMSignalHandler alloc] initWithSignal:SIGIO
target:counter2
action:@selector(countSignal:)] autorelease];
[self expectationForPredicate:
[NSPredicate predicateWithFormat:@"self.lastSeen == %d", SIGIO]
evaluatedWithObject:counter2 handler:NULL];
[self expectationForPredicate:
[NSPredicate predicateWithFormat:@"self.count == 1"]
evaluatedWithObject:counter2 handler:NULL];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, deltaT), raiseQueue, ^{
raise(SIGIO);
});
[self waitForExpectationsWithTimeout:5 handler:NULL];
XCTAssertEqual([counter count], 2);
XCTAssertEqual([counter lastSeen], SIGWINCH);
[handler invalidate];
// The signal is still ignored (so we shouldn't die), but the
// the handler method should not get called.
[self expectationForPredicate:
[NSPredicate predicateWithFormat:@"self.lastSeen == %d", SIGWINCH]
evaluatedWithObject:counter handler:NULL].inverted = YES;
[self expectationForPredicate:
[NSPredicate predicateWithFormat:@"self.count == 2"]
evaluatedWithObject:counter handler:NULL].inverted = YES;
raise(SIGWINCH);
[self waitForExpectationsWithTimeout:.2 handler:NULL];
}
- (void)testIgnore {
SignalCounter *counter = [SignalCounter signalCounter];
XCTAssertNotNil(counter);
[[[GTMSignalHandler alloc] initWithSignal:SIGIO
target:counter
action:NULL] autorelease];
[self expectationForPredicate:
[NSPredicate predicateWithFormat:@"self.count == 0"]
evaluatedWithObject:counter handler:NULL].inverted = YES;
raise(SIGIO);
[self waitForExpectationsWithTimeout:.2 handler:NULL];
}
@end
#pragma clang diagnostic pop
|
