Regress141809.mm   [plain text]

/*
* Copyright (C) 2015 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/

#import "config.h"
#import "Regress141809.h"

#import <objc/objc.h>
#import <objc/runtime.h>

#if JSC_OBJC_API_ENABLED

extern "C" void checkResult(NSString *description, bool passed);
extern "C" void JSSynchronousGarbageCollectForDebugging(JSContextRef);

@protocol TestClassAExports <JSExport>
@end

@interface TestClassA : NSObject<TestClassAExports>
@end

@implementation TestClassA
@end

@protocol TestClassBExports <JSExport>
- (NSString *)name;
@end

@interface TestClassB : TestClassA <TestClassBExports>
@end

@implementation TestClassB
- (NSString *)name
{
return @"B";
}
@end

@protocol TestClassCExports <JSExport>
- (NSString *)name;
@end

@interface TestClassC : TestClassB <TestClassCExports>
@end

@implementation TestClassC
- (NSString *)name
{
return @"C";
}
@end

void runRegress141809()
{
// Test that the ObjC API can correctly re-construct the synthesized
// prototype and constructor of JS exported ObjC classes.
// See <https://webkit.org/b/141809>
@autoreleasepool {
JSContext *context = [[JSContext alloc] init];
context[@"print"] = ^(NSString* str) {
NSLog(@"%@", str);
};

[context evaluateScript:@"function dumpPrototypes(obj) { \
var objDepth = 0; \
var currObj = obj; \
var objChain = ''; \
do { \
var propIndex = 0; \
var props = ''; \
Object.getOwnPropertyNames(currObj).forEach(function(val, idx, array) { \
props += ((propIndex > 0 ? ', ' : '') + val); \
propIndex++; \
}); \
var str = ''; \
if (!objDepth) \
str += 'obj '; \
else { \
for (i = 0; i < objDepth; i++) \
str += ' '; \
str += '--> proto '; \
} \
str += currObj; \
if (props) \
str += (' with ' + propIndex + ' props: ' + props); \
print(str); \
objChain += (str + '\\n'); \
objDepth++; \
currObj = Object.getPrototypeOf(currObj); \
} while (currObj); \
return { objDepth: objDepth, objChain: objChain }; \
}"];
JSValue* dumpPrototypes = context[@"dumpPrototypes"];

JSValue* resultBeforeGC = nil;
@autoreleasepool {
TestClassC* obj = [[TestClassC alloc] init];
resultBeforeGC = [dumpPrototypes callWithArguments:@[obj]];
}

JSSynchronousGarbageCollectForDebugging([context JSGlobalContextRef]);

@autoreleasepool {
TestClassC* obj = [[TestClassC alloc] init];
JSValue* resultAfterGC = [dumpPrototypes callWithArguments:@[obj]];
checkResult(@"object and prototype chain depth is 5 deep", [resultAfterGC[@"objDepth"] toInt32] == 5);
checkResult(@"object and prototype chain depth before and after GC matches", [resultAfterGC[@"objDepth"] toInt32] == [resultBeforeGC[@"objDepth"] toInt32]);
checkResult(@"object and prototype chain before and after GC matches", [[resultAfterGC[@"objChain"] toString] isEqualToString:[resultBeforeGC[@"objChain"] toString]]);
}
}
}

#endif // JSC_OBJC_API_ENABLED