darling-objc4/test/runtime.m

/* 
TEST_BUILD_OUTPUT
.*runtime.m:\d+:\d+: warning: null passed to a callee that requires a non-null argument \[-Wnonnull\](\n.* note: expanded from macro 'testassert')?
.*runtime.m:\d+:\d+: warning: null passed to a callee that requires a non-null argument \[-Wnonnull\](\n.* note: expanded from macro 'testassert')?
.*runtime.m:\d+:\d+: warning: null passed to a callee that requires a non-null argument \[-Wnonnull\](\n.* note: expanded from macro 'testassert')?
END

TEST_RUN_OUTPUT
objc\[\d+\]: class `SwiftV1Class\' not linked into application
objc\[\d+\]: class `DoesNotExist\' not linked into application
OK: runtime.m
OR
confused by Foundation
OK: runtime.m
END 
*/


#include "test.h"
#include "testroot.i"
#include <string.h>
#include <dlfcn.h>
#include <mach-o/ldsyms.h>
#include <objc/objc-runtime.h>

#if __has_feature(objc_arc)

int main()
{
    // provoke the same nullability warnings as the real test
    objc_getClass(nil);
    objc_getClass(nil);
    objc_getClass(nil);
    
    testwarn("rdar://11368528 confused by Foundation");
    fprintf(stderr, "confused by Foundation\n");
    succeed(__FILE__);
}

#else

@interface Sub : TestRoot @end
@implementation Sub @end

#define SwiftV1MangledName "_TtC6Module12SwiftV1Class"
#define SwiftV1MangledName2 "_TtC2Sw13SwiftV1Class2"
#define SwiftV1MangledName3 "_TtCs13SwiftV1Class3"
#define SwiftV1MangledName4 "_TtC6Swiftt13SwiftV1Class4"

__attribute__((objc_runtime_name(SwiftV1MangledName)))
@interface SwiftV1Class : TestRoot @end
@implementation SwiftV1Class @end

__attribute__((objc_runtime_name(SwiftV1MangledName2)))
@interface SwiftV1Class2 : TestRoot @end
@implementation SwiftV1Class2 @end

__attribute__((objc_runtime_name(SwiftV1MangledName3)))
@interface SwiftV1Class3 : TestRoot @end
@implementation SwiftV1Class3 @end

__attribute__((objc_runtime_name(SwiftV1MangledName4)))
@interface SwiftV1Class4 : TestRoot @end
@implementation SwiftV1Class4 @end


int main()
{
    Class list[100];
    Class *list2;
    unsigned int count, count0, count2;
    unsigned int i;
    int foundTestRoot;
    int foundSub;
    int foundSwiftV1;
    int foundSwiftV1class2;
    int foundSwiftV1class3;
    int foundSwiftV1class4;
    const char **names;
    const char **namesFromHeader;
    Dl_info info;

    [TestRoot class];

    // This shouldn't touch any classes.
    dladdr(&_mh_execute_header, &info);
    names = objc_copyClassNamesForImage(info.dli_fname, &count);
    testassert(names);
    testassert(count == 6);
    testassert(names[count] == NULL);
    foundTestRoot = 0;
    foundSub = 0;
    foundSwiftV1 = 0;
    foundSwiftV1class2 = 0;
    foundSwiftV1class3 = 0;
    foundSwiftV1class4 = 0;
    for (i = 0; i < count; i++) {
        if (0 == strcmp(names[i], "TestRoot")) foundTestRoot++;
        if (0 == strcmp(names[i], "Sub")) foundSub++;
        if (0 == strcmp(names[i], "Module.SwiftV1Class")) foundSwiftV1++;
        if (0 == strcmp(names[i], "Sw.SwiftV1Class2")) foundSwiftV1class2++;
        if (0 == strcmp(names[i], "Swift.SwiftV1Class3")) foundSwiftV1class3++;
        if (0 == strcmp(names[i], "Swiftt.SwiftV1Class4")) foundSwiftV1class4++;
    }
    testassert(foundTestRoot == 1);
    testassert(foundSub == 1);
    testassert(foundSwiftV1 == 1);
    testassert(foundSwiftV1class2 == 1);
    testassert(foundSwiftV1class3 == 1);
    testassert(foundSwiftV1class4 == 1);

    // Getting the names using the header should give us the same list.
    namesFromHeader = objc_copyClassNamesForImage(info.dli_fname, &count0);
    testassert(namesFromHeader);
    testassert(count == count0);
    for (i = 0; i < count; i++) {
        testassert(!strcmp(names[i], namesFromHeader[i]));
    }
    
    
    // class Sub hasn't been touched - make sure it's in the class list too
    count0 = objc_getClassList(NULL, 0);
    testassert(count0 >= 2  &&  count0 < 100);
    
    list[count0-1] = NULL;
    count = objc_getClassList(list, count0-1);
    testassert(list[count0-1] == NULL);
    testassert(count == count0);

    // So that demangling works, fake what would have happened with Swift
    // and force the "Swift" bit on the class
    ((uintptr_t *)objc_getClass(SwiftV1MangledName))[4] |= 2;
    ((uintptr_t *)objc_getClass(SwiftV1MangledName2))[4] |= 2;
    ((uintptr_t *)objc_getClass(SwiftV1MangledName3))[4] |= 2;
    ((uintptr_t *)objc_getClass(SwiftV1MangledName4))[4] |= 2;

    count = objc_getClassList(list, count0);
    testassert(count == count0);

    for (i = 0; i < count; i++) {
        testprintf("%s\n", class_getName(list[i]));
    }

    foundTestRoot = 0;
    foundSub = 0;
    foundSwiftV1 = 0;
    foundSwiftV1class2 = 0;
    foundSwiftV1class3 = 0;
    foundSwiftV1class4 = 0;
    for (i = 0; i < count; i++) {
        if (0 == strcmp(class_getName(list[i]), "TestRoot")) foundTestRoot++;
        if (0 == strcmp(class_getName(list[i]), "Sub")) foundSub++;
        if (0 == strcmp(class_getName(list[i]), "Module.SwiftV1Class")) foundSwiftV1++;
        if (0 == strcmp(class_getName(list[i]), "Sw.SwiftV1Class2")) foundSwiftV1class2++;
        if (0 == strcmp(class_getName(list[i]), "Swift.SwiftV1Class3")) foundSwiftV1class3++;
        if (0 == strcmp(class_getName(list[i]), "Swiftt.SwiftV1Class4")) foundSwiftV1class4++;
        // list should be non-meta classes only
        testassert(!class_isMetaClass(list[i]));
    }
    testassert(foundTestRoot == 1);
    testassert(foundSub == 1);
    testassert(foundSwiftV1 == 1);
    testassert(foundSwiftV1class2 == 1);
    testassert(foundSwiftV1class3 == 1);
    testassert(foundSwiftV1class4 == 1);

    // fixme check class handler
    testassert(objc_getClass("TestRoot") == [TestRoot class]);
    testassert(objc_getClass("Module.SwiftV1Class") == [SwiftV1Class class]);
    testassert(objc_getClass(SwiftV1MangledName) == [SwiftV1Class class]);
    testassert(objc_getClass("Sw.SwiftV1Class2") == [SwiftV1Class2 class]);
    testassert(objc_getClass(SwiftV1MangledName2) == [SwiftV1Class2 class]);
    testassert(objc_getClass("Swift.SwiftV1Class3") == [SwiftV1Class3 class]);
    testassert(objc_getClass(SwiftV1MangledName3) == [SwiftV1Class3 class]);
    testassert(objc_getClass("Swiftt.SwiftV1Class4") == [SwiftV1Class4 class]);
    testassert(objc_getClass(SwiftV1MangledName4) == [SwiftV1Class4 class]);
    testassert(objc_getClass("SwiftV1Class") == nil);
    testassert(objc_getClass("DoesNotExist") == nil);
    testassert(objc_getClass(NULL) == nil);

    testassert(objc_getMetaClass("TestRoot") == object_getClass([TestRoot class]));
    testassert(objc_getMetaClass("Module.SwiftV1Class") == object_getClass([SwiftV1Class class]));
    testassert(objc_getMetaClass(SwiftV1MangledName) == object_getClass([SwiftV1Class class]));
    testassert(objc_getMetaClass("SwiftV1Class") == nil);
    testassert(objc_getMetaClass("DoesNotExist") == nil);
    testassert(objc_getMetaClass(NULL) == nil);

    // fixme check class no handler
    testassert(objc_lookUpClass("TestRoot") == [TestRoot class]);
    testassert(objc_lookUpClass("Module.SwiftV1Class") == [SwiftV1Class class]);
    testassert(objc_lookUpClass(SwiftV1MangledName) == [SwiftV1Class class]);
    testassert(objc_lookUpClass("SwiftV1Class") == nil);
    testassert(objc_lookUpClass("DoesNotExist") == nil);
    testassert(objc_lookUpClass(NULL) == nil);

    testassert(! object_isClass(nil));
    testassert(! object_isClass([TestRoot new]));
    testassert(object_isClass([TestRoot class]));
    testassert(object_isClass(object_getClass([TestRoot class])));
    testassert(object_isClass([Sub class]));
    testassert(object_isClass(object_getClass([Sub class])));
    testassert(object_isClass([SwiftV1Class class]));
    testassert(object_isClass(object_getClass([SwiftV1Class class])));

    list2 = objc_copyClassList(&count2);
    testassert(count2 == count);
    testassert(list2);
    testassert(malloc_size(list2) >= (1+count2) * sizeof(Class));
    for (i = 0; i < count; i++) {
        testassert(list[i] == list2[i]);
    }
    testassert(list2[count] == NULL);
    free(list2);
    free(objc_copyClassList(NULL));
    
    // Make sure metaclasses get demangled too.
    testassert(strcmp(class_getName([TestRoot class]), class_getName(object_getClass([TestRoot class]))) == 0);
    testassert(strcmp(class_getName([Sub class]), class_getName(object_getClass([Sub class]))) == 0);
    testassert(strcmp(class_getName([SwiftV1Class class]), class_getName(object_getClass([SwiftV1Class class]))) == 0);
    testassert(strcmp(class_getName([SwiftV1Class2 class]), class_getName(object_getClass([SwiftV1Class2 class]))) == 0);
    testassert(strcmp(class_getName([SwiftV1Class3 class]), class_getName(object_getClass([SwiftV1Class3 class]))) == 0);
    testassert(strcmp(class_getName([SwiftV1Class4 class]), class_getName(object_getClass([SwiftV1Class4 class]))) == 0);

    testassert(!_class_isSwift([TestRoot class]));
    testassert(!_class_isSwift([Sub class]));
    testassert(_class_isSwift([SwiftV1Class class]));
    testassert(_class_isSwift([SwiftV1Class2 class]));
    testassert(_class_isSwift([SwiftV1Class3 class]));
    testassert(_class_isSwift([SwiftV1Class4 class]));

    succeed(__FILE__);
}

#endif