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//
// 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"
#import "GTMFoundationUnitTestingUtilities.h"
@interface GTMSignalHandlerTest : GTMTestCase
@end
@interface SignalCounter : NSObject<GTMUnitTestingRunLoopContext> {
@public
int signalCount_;
int lastSeenSignal_;
BOOL shouldStop_;
}
- (int)count;
- (int)lastSeen;
- (void)countSignal:(int)signo;
+ (id)signalCounter;
- (void)resetShouldStop;
@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;
shouldStop_ = YES;
}
- (BOOL)shouldStop {
return shouldStop_;
}
- (void)resetShouldStop {
shouldStop_ = NO;
}
@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 {
SignalCounter *counter = [SignalCounter signalCounter];
XCTAssertNotNil(counter);
GTMSignalHandler *handler = [[[GTMSignalHandler alloc]
initWithSignal:SIGWINCH
target:counter
action:@selector(countSignal:)]
autorelease];
XCTAssertNotNil(handler);
raise(SIGWINCH);
NSRunLoop *rl = [NSRunLoop currentRunLoop];
[rl gtm_runUpToSixtySecondsWithContext:counter];
XCTAssertEqual([counter count], 1);
XCTAssertEqual([counter lastSeen], SIGWINCH);
[counter resetShouldStop];
raise(SIGWINCH);
[rl gtm_runUpToSixtySecondsWithContext:counter];
XCTAssertEqual([counter count], 2);
XCTAssertEqual([counter lastSeen], SIGWINCH);
[counter resetShouldStop];
// create a second one to make sure we're seding data where we want
SignalCounter *counter2 = [SignalCounter signalCounter];
XCTAssertNotNil(counter2);
[[[GTMSignalHandler alloc] initWithSignal:SIGUSR1
target:counter2
action:@selector(countSignal:)] autorelease];
raise(SIGUSR1);
[rl gtm_runUpToSixtySecondsWithContext:counter2];
XCTAssertEqual([counter count], 2);
XCTAssertEqual([counter lastSeen], SIGWINCH);
XCTAssertEqual([counter2 count], 1);
XCTAssertEqual([counter2 lastSeen], SIGUSR1);
[handler invalidate];
// The signal is still ignored (so we shouldn't die), but the
// the handler method should not get called.
raise(SIGWINCH);
[rl runUntilDate:[NSDate dateWithTimeIntervalSinceNow:.2]];
XCTAssertEqual([counter count], 2);
XCTAssertEqual([counter lastSeen], SIGWINCH);
XCTAssertEqual([counter2 count], 1);
XCTAssertEqual([counter2 lastSeen], SIGUSR1);
}
- (void)testIgnore {
SignalCounter *counter = [SignalCounter signalCounter];
XCTAssertNotNil(counter);
[[[GTMSignalHandler alloc] initWithSignal:SIGUSR1
target:counter
action:NULL] autorelease];
raise(SIGUSR1);
NSRunLoop *rl = [NSRunLoop currentRunLoop];
[rl runUntilDate:[NSDate dateWithTimeIntervalSinceNow:.2]];
XCTAssertEqual([counter count], 0);
}
@end
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