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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#import "chrome/browser/mac/exception_processor.h"
#import <Cocoa/Cocoa.h>
#include <stddef.h>
#include <sys/wait.h>
#include "base/mac/os_crash_dumps.h"
#include "base/test/scoped_feature_list.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
class ExceptionProcessorTest : public testing::Test {
public:
ExceptionProcessorTest() {
features_.InitWithFeatures({kForceCrashOnExceptions}, {});
}
protected:
base::test::ScopedFeatureList features_;
};
void RaiseExceptionInRunLoop() {
CFRunLoopRef run_loop = CFRunLoopGetCurrent();
CFRunLoopPerformBlock(run_loop, kCFRunLoopCommonModes, ^{
[NSException raise:@"ThrowExceptionInRunLoop" format:@""];
});
CFRunLoopPerformBlock(run_loop, kCFRunLoopCommonModes, ^{
CFRunLoopStop(run_loop);
});
CFRunLoopRun();
}
void ThrowExceptionInRunLoop() {
base::mac::DisableOSCrashDumps();
InstallObjcExceptionPreprocessor();
RaiseExceptionInRunLoop();
fprintf(stderr, "TEST FAILED\n");
exit(1);
}
// Tests that when the preprocessor is installed, exceptions thrown from
// a runloop callout are made fatal, so that the stack trace is useful.
TEST_F(ExceptionProcessorTest, ThrowExceptionInRunLoop) {
GTEST_FLAG_SET(death_test_style, "threadsafe");
EXPECT_DEATH(ThrowExceptionInRunLoop(),
".*FATAL:.*exception_processor\\.mm.*"
"Terminating from Objective-C exception:.*");
}
void ThrowAndCatchExceptionInRunLoop() {
base::mac::DisableOSCrashDumps();
InstallObjcExceptionPreprocessor();
CFRunLoopRef run_loop = CFRunLoopGetCurrent();
CFRunLoopPerformBlock(run_loop, kCFRunLoopCommonModes, ^{
@try {
[NSException raise:@"ObjcExceptionPreprocessCaught" format:@""];
} @catch (id exception) {
}
});
CFRunLoopPerformBlock(run_loop, kCFRunLoopCommonModes, ^{
CFRunLoopStop(run_loop);
});
CFRunLoopRun();
fprintf(stderr, "TEST PASS\n");
exit(0);
}
// Tests that exceptions can still be caught when the preprocessor is enabled.
TEST_F(ExceptionProcessorTest, ThrowAndCatchExceptionInRunLoop) {
GTEST_FLAG_SET(death_test_style, "threadsafe");
EXPECT_EXIT(ThrowAndCatchExceptionInRunLoop(),
[](int exit_code) -> bool {
return WEXITSTATUS(exit_code) == 0;
},
".*TEST PASS.*");
}
void ThrowExceptionFromSelector() {
base::mac::DisableOSCrashDumps();
InstallObjcExceptionPreprocessor();
NSException* exception = [NSException exceptionWithName:@"ThrowFromSelector"
reason:@""
userInfo:nil];
[exception performSelector:@selector(raise) withObject:nil afterDelay:0.1];
[[NSRunLoop currentRunLoop] runUntilDate:
[NSDate dateWithTimeIntervalSinceNow:10]];
fprintf(stderr, "TEST FAILED\n");
exit(1);
}
TEST_F(ExceptionProcessorTest, ThrowExceptionFromSelector) {
GTEST_FLAG_SET(death_test_style, "threadsafe");
EXPECT_DEATH(ThrowExceptionFromSelector(),
".*FATAL:.*exception_processor\\.mm.*"
"Terminating from Objective-C exception:.*");
}
void ThrowInNotificationObserver() {
base::mac::DisableOSCrashDumps();
InstallObjcExceptionPreprocessor();
NSNotification* notification =
[NSNotification notificationWithName:@"TestExceptionInObserver"
object:nil];
NSNotificationCenter* center = [NSNotificationCenter defaultCenter];
[center addObserverForName:[notification name]
object:nil
queue:nil
usingBlock:^(NSNotification*) {
[NSException raise:@"ThrowInNotificationObserver"
format:@""];
}];
[center performSelector:@selector(postNotification:)
withObject:notification
afterDelay:0];
[[NSRunLoop currentRunLoop] runUntilDate:
[NSDate dateWithTimeIntervalSinceNow:10]];
fprintf(stderr, "TEST FAILED\n");
exit(1);
}
TEST_F(ExceptionProcessorTest, ThrowInNotificationObserver) {
GTEST_FLAG_SET(death_test_style, "threadsafe");
EXPECT_DEATH(ThrowInNotificationObserver(),
".*FATAL:.*exception_processor\\.mm.*"
"Terminating from Objective-C exception:.*");
}
void ThrowExceptionInRunLoopWithoutProcessor() {
base::mac::DisableOSCrashDumps();
UninstallObjcExceptionPreprocessor();
@try {
RaiseExceptionInRunLoop();
} @catch (id exception) {
fprintf(stderr, "TEST PASS\n");
exit(0);
}
fprintf(stderr, "TEST FAILED\n");
exit(1);
}
// Under LSAN this dies from leaking the run loop instead of how we expect it to
// die, so the exit code is wrong.
#if defined(LEAK_SANITIZER)
#define MAYBE_ThrowExceptionInRunLoopWithoutProcessor \
DISABLED_ThrowExceptionInRunLoopWithoutProcessor
#else
#define MAYBE_ThrowExceptionInRunLoopWithoutProcessor \
ThrowExceptionInRunLoopWithoutProcessor
#endif
// Tests basic exception handling when the preprocessor is disabled.
TEST_F(ExceptionProcessorTest, MAYBE_ThrowExceptionInRunLoopWithoutProcessor) {
GTEST_FLAG_SET(death_test_style, "threadsafe");
EXPECT_EXIT(ThrowExceptionInRunLoopWithoutProcessor(),
[](int exit_code) -> bool {
return WEXITSTATUS(exit_code) == 0;
},
".*TEST PASS.*");
}
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