API/tests/Regress141809.mm

   1 /*
   2  * Copyright (C) 2015 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  23  * THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #import "config.h"
  27 #import "Regress141809.h"
  28
  29 #import <objc/objc.h>
  30 #import <objc/runtime.h>
  31
  32 #if JSC_OBJC_API_ENABLED
  33
  34 extern "C" void checkResult(NSString *description, bool passed);
  35 extern "C" void JSSynchronousGarbageCollectForDebugging(JSContextRef);
  36
  37 @protocol TestClassAExports <JSExport>
  38 @end
  39
  40 @interface TestClassA : NSObject<TestClassAExports>
  41 @end
  42
  43 @implementation TestClassA
  44 @end
  45
  46 @protocol TestClassBExports <JSExport>
  47 - (NSString *)name;
  48 @end
  49
  50 @interface TestClassB : TestClassA <TestClassBExports>
  51 @end
  52
  53 @implementation TestClassB
  54 - (NSString *)name
  55 {
  56     return @"B";
  57 }
  58 @end
  59
  60 @protocol TestClassCExports <JSExport>
  61 - (NSString *)name;
  62 @end
  63
  64 @interface TestClassC : TestClassB <TestClassCExports>
  65 @end
  66
  67 @implementation TestClassC
  68 - (NSString *)name
  69 {
  70     return @"C";
  71 }
  72 @end
  73
  74 void runRegress141809()
  75 {
  76     // Test that the ObjC API can correctly re-construct the synthesized
  77     // prototype and constructor of JS exported ObjC classes.
  78     // See <https://webkit.org/b/141809>
  79     @autoreleasepool {
  80         JSContext *context = [[JSContext alloc] init];
  81         context[@"print"] = ^(NSString* str) {
  82             NSLog(@"%@", str);
  83         };
  84
  85         [context evaluateScript:@"function dumpPrototypes(obj) { \
  86             var objDepth = 0; \
  87             var currObj = obj; \
  88             var objChain = ''; \
  89             do { \
  90                 var propIndex = 0; \
  91                 var props = ''; \
  92                 Object.getOwnPropertyNames(currObj).forEach(function(val, idx, array) { \
  93                     props += ((propIndex > 0 ? ', ' : '') + val); \
  94                     propIndex++; \
  95                 }); \
  96                 var str = ''; \
  97                 if (!objDepth) \
  98                     str += 'obj '; \
  99                 else { \
 100                     for (i = 0; i < objDepth; i++) \
 101                         str += ' '; \
 102                     str += '--> proto '; \
 103                 } \
 104                 str += currObj; \
 105                 if (props) \
 106                     str += (' with ' + propIndex + ' props: ' + props); \
 107                 print(str); \
 108                 objChain += (str + '\\n'); \
 109                 objDepth++; \
 110                 currObj = Object.getPrototypeOf(currObj); \
 111             } while (currObj); \
 112             return { objDepth: objDepth, objChain: objChain }; \
 113         }"];
 114         JSValue* dumpPrototypes = context[@"dumpPrototypes"];
 115
 116         JSValue* resultBeforeGC = nil;
 117         @autoreleasepool {
 118             TestClassC* obj = [[TestClassC alloc] init];
 119             resultBeforeGC = [dumpPrototypes callWithArguments:@[obj]];
 120         }
 121
 122         JSSynchronousGarbageCollectForDebugging([context JSGlobalContextRef]);
 123
 124         @autoreleasepool {
 125             TestClassC* obj = [[TestClassC alloc] init];
 126             JSValue* resultAfterGC = [dumpPrototypes callWithArguments:@[obj]];
 127             checkResult(@"object and prototype chain depth is 5 deep", [resultAfterGC[@"objDepth"] toInt32] == 5);
 128             checkResult(@"object and prototype chain depth before and after GC matches", [resultAfterGC[@"objDepth"] toInt32] == [resultBeforeGC[@"objDepth"] toInt32]);
 129             checkResult(@"object and prototype chain before and after GC matches", [[resultAfterGC[@"objChain"] toString] isEqualToString:[resultBeforeGC[@"objChain"] toString]]);
 130         }
 131     }
 132 }
 133
 134 #endif // JSC_OBJC_API_ENABLED