Index: configure.ac
==================================================================
--- configure.ac
+++ configure.ac
@@ -169,14 +169,14 @@
 ], [
 	Foo *foo = (id)0;
 	[foo setBar: (id)0];
 	foo = [foo bar];
 ], [
-	AC_SUBST(PROPERTIESTESTS_M, "PropertiesTests.m")
 	AC_MSG_RESULT(yes)
 ], [
 	AC_MSG_RESULT(no)
+	AC_MSG_ERROR(Compiler does not support properties!)
 ])
 
 AC_MSG_CHECKING(whether Objective C compiler supports blocks)
 old_OBJCFLAGS="$OBJCFLAGS"
 OBJCFLAGS="$OBJCFLAGS -fblocks"

Index: extra.mk.in
==================================================================
--- extra.mk.in
+++ extra.mk.in
@@ -38,11 +38,10 @@
 OFKERNELEVENTOBSERVER_KQUEUE_M = @OFKERNELEVENTOBSERVER_KQUEUE_M@
 OFKERNELEVENTOBSERVER_POLL_M = @OFKERNELEVENTOBSERVER_POLL_M@
 OFKERNELEVENTOBSERVER_SELECT_M = @OFKERNELEVENTOBSERVER_SELECT_M@
 OFSTDIOSTREAM_WIN32CONSOLE_M = @OFSTDIOSTREAM_WIN32CONSOLE_M@
 OFZIP = @OFZIP@
-PROPERTIESTESTS_M = @PROPERTIESTESTS_M@
 REEXPORT_LIBOBJC = @REEXPORT_LIBOBJC@
 RUNTIME = @RUNTIME@
 RUNTIME_A = @RUNTIME_A@
 RUNTIME_RUNTIME_A = @RUNTIME_RUNTIME_A@
 RUNTIME_RUNTIME_LIB_A = @RUNTIME_RUNTIME_LIB_A@

Index: tests/Makefile
==================================================================
--- tests/Makefile
+++ tests/Makefile
@@ -23,11 +23,11 @@
        OFStringTests.m			\
        OFURLTests.m			\
        OFXMLElementBuilderTests.m	\
        OFXMLNodeTests.m			\
        OFXMLParserTests.m		\
-       ${PROPERTIESTESTS_M}		\
+       RuntimeTests.m			\
        TestsAppDelegate.m		\
        ${USE_SRCS_FILES}		\
        ${USE_SRCS_PLUGINS}		\
        ${USE_SRCS_SOCKETS}		\
        ${USE_SRCS_THREADS}		\

DELETED tests/PropertiesTests.m
Index: tests/PropertiesTests.m
==================================================================
--- tests/PropertiesTests.m
+++ tests/PropertiesTests.m
@@ -1,66 +0,0 @@
-/*
- * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
- *   Jonathan Schleifer <js@heap.zone>
- *
- * All rights reserved.
- *
- * This file is part of ObjFW. It may be distributed under the terms of the
- * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
- * the packaging of this file.
- *
- * Alternatively, it may be distributed under the terms of the GNU General
- * Public License, either version 2 or 3, which can be found in the file
- * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
- * file.
- */
-
-#include "config.h"
-
-#import "OFString.h"
-#import "OFAutoreleasePool.h"
-
-#import "TestsAppDelegate.h"
-
-static OFString *module = @"Properties";
-
-@interface PropertiesTest: OFObject
-{
-	OFString *foo;
-	OFString *bar;
-}
-
-@property (copy, nonatomic) OFString *foo;
-@property (retain) OFString *bar;
-@end
-
-@implementation PropertiesTest
-@synthesize foo;
-@synthesize bar;
-
-- (void)dealloc
-{
-	[foo release];
-	[bar release];
-
-	[super dealloc];
-}
-@end
-
-@implementation TestsAppDelegate (PropertiesTests)
-- (void)propertiesTests
-{
-	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
-	PropertiesTest *pt = [[[PropertiesTest alloc] init] autorelease];
-	OFString *t = [OFMutableString stringWithString: @"foo"];
-	OFString *foo = @"foo";
-
-	[pt setFoo: t];
-	TEST(@"copy, nonatomic", [[pt foo] isEqual: foo] &&
-	    [pt foo] != foo && [[pt foo] retainCount] == 1)
-
-	[pt setBar: t];
-	TEST(@"retain, atomic", [pt bar] == t && [t retainCount] == 3)
-
-	[pool drain];
-}
-@end

ADDED   tests/RuntimeTests.m
Index: tests/RuntimeTests.m
==================================================================
--- tests/RuntimeTests.m
+++ tests/RuntimeTests.m
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
+ *   Jonathan Schleifer <js@heap.zone>
+ *
+ * All rights reserved.
+ *
+ * This file is part of ObjFW. It may be distributed under the terms of the
+ * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
+ * the packaging of this file.
+ *
+ * Alternatively, it may be distributed under the terms of the GNU General
+ * Public License, either version 2 or 3, which can be found in the file
+ * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
+ * file.
+ */
+
+#include "config.h"
+
+#import "OFString.h"
+#import "OFAutoreleasePool.h"
+
+#import "TestsAppDelegate.h"
+
+static OFString *module = @"Runtime";
+
+@interface RuntimeTest: OFObject
+{
+	OFString *_foo, *_bar;
+}
+
+@property (copy, nonatomic) OFString *foo;
+@property (retain) OFString *bar;
+@end
+
+@implementation RuntimeTest
+@synthesize foo = _foo;
+@synthesize bar = _bar;
+
+- (void)dealloc
+{
+	[_foo release];
+	[_bar release];
+
+	[super dealloc];
+}
+@end
+
+@implementation TestsAppDelegate (RuntimeTests)
+- (void)runtimeTests
+{
+	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
+	RuntimeTest *rt = [[[RuntimeTest alloc] init] autorelease];
+	OFString *t = [OFMutableString stringWithString: @"foo"];
+	OFString *foo = @"foo";
+
+	[rt setFoo: t];
+	TEST(@"copy, nonatomic properties", [[rt foo] isEqual: foo] &&
+	    [rt foo] != foo && [[rt foo] retainCount] == 1)
+
+	[rt setBar: t];
+	TEST(@"retain, atomic properties",
+	    [rt bar] == t && [t retainCount] == 3)
+
+	[pool drain];
+}
+@end

Index: tests/TestsAppDelegate.h
==================================================================
--- tests/TestsAppDelegate.h
+++ tests/TestsAppDelegate.h
@@ -130,12 +130,12 @@
 
 @interface TestsAppDelegate (OFPluginTests)
 - (void)pluginTests;
 @end
 
-@interface TestsAppDelegate (PropertiesTests)
-- (void)propertiesTests;
+@interface TestsAppDelegate (RuntimeTests)
+- (void)runtimeTests;
 @end
 
 @interface TestsAppDelegate (OFRIPEMD160HashTests)
 - (void)RIPEMD160HashTests;
 @end

Index: tests/TestsAppDelegate.m
==================================================================
--- tests/TestsAppDelegate.m
+++ tests/TestsAppDelegate.m
@@ -359,10 +359,12 @@
 #if defined(OF_WII) && defined(OF_HAVE_FILES)
 	[[OFFileManager defaultManager]
 	    changeCurrentDirectoryPath: @"/apps/objfw-tests"];
 #endif
 
+	[self runtimeTests];
+	[self forwardingTests];
 	[self objectTests];
 #ifdef OF_HAVE_BLOCKS
 	[self blockTests];
 #endif
 	[self stringTests];
@@ -404,12 +406,10 @@
 #endif
 	[self JSONTests];
 #ifdef OF_HAVE_PLUGINS
 	[self pluginTests];
 #endif
-	[self forwardingTests];
-	[self propertiesTests];
 
 #if defined(OF_WII)
 	[self outputString: @"Press home button to exit!\n"
 		   inColor: NO_COLOR];
 	for (;;) {