Index: tests/Makefile
==================================================================
--- tests/Makefile
+++ tests/Makefile
@@ -27,10 +27,11 @@
        OFObjectTests.m			\
        OFPropertyListTests.m		\
        OFSetTests.m			\
        OFStreamTests.m			\
        OFStringTests.m			\
+       OFSystemInfoTests.m		\
        OFURLTests.m			\
        OFValueTests.m			\
        OFXMLElementBuilderTests.m	\
        OFXMLNodeTests.m			\
        OFXMLParserTests.m		\

Index: tests/OFLocalizationTests.m
==================================================================
--- tests/OFLocalizationTests.m
+++ tests/OFLocalizationTests.m
@@ -19,37 +19,25 @@
 
 #import "OFLocalization.h"
 #import "OFAutoreleasePool.h"
 
 #import "TestsAppDelegate.h"
+
+static OFString *module = @"OFLocalization";
 
 @implementation TestsAppDelegate (OFLocalizationTests)
 - (void)localizationTests
 {
 	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
-	OFString *msg;
-
-	msg = [OFString stringWithFormat:
-	     @"[OFLocalization] Language: %@\n", [OFLocalization language]];
-	[self outputString: msg
-		   inColor: GREEN];
-
-	msg = [OFString stringWithFormat:
-	    @"[OFLocalization] Territory: %@\n", [OFLocalization territory]];
-	[self outputString: msg
-		   inColor: GREEN];
-
-	msg = [OFString stringWithFormat:
-	    @"[OFLocalization] Encoding: %@\n",
-	    of_string_name_of_encoding([OFLocalization encoding])];
-	[self outputString: msg
-		   inColor: GREEN];
-
-	msg = [OFString stringWithFormat:
-	    @"[OFLocalization] Decimal point: %@\n",
-	    [OFLocalization decimalPoint]];
-	[self outputString: msg
-		   inColor: GREEN];
+
+	PRINT(GREEN, @"Language: %@", [OFLocalization language]);
+
+	PRINT(GREEN, @"Territory: %@", [OFLocalization territory]);
+
+	PRINT(GREEN, @"Encoding: %@",
+	    of_string_name_of_encoding([OFLocalization encoding]));
+
+	PRINT(GREEN, @"Decimal point: %@", [OFLocalization decimalPoint]);
 
 	[pool drain];
 }
 @end

ADDED   tests/OFSystemInfoTests.m
Index: tests/OFSystemInfoTests.m
==================================================================
--- tests/OFSystemInfoTests.m
+++ tests/OFSystemInfoTests.m
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
+ *               2018
+ *   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 "OFSystemInfo.h"
+#import "OFAutoreleasePool.h"
+
+#import "TestsAppDelegate.h"
+
+static OFString *module = @"OFSystemInfo";
+
+@implementation TestsAppDelegate (OFSystemInfoTests)
+- (void)systemInfoTests
+{
+	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
+
+	PRINT(GREEN, @"Page size: %zd", [OFSystemInfo pageSize]);
+
+	PRINT(GREEN, @"Number of CPUs: %zd", [OFSystemInfo numberOfCPUs]);
+
+	PRINT(GREEN, @"Operating system name: %@",
+	    [OFSystemInfo operatingSystemName]);
+
+	PRINT(GREEN, @"Operating system version: %@",
+	    [OFSystemInfo operatingSystemVersion]);
+
+#ifdef OF_HAVE_FILES
+	PRINT(GREEN, @"User data path: %@", [OFSystemInfo userDataPath]);
+
+	PRINT(GREEN, @"User config path: %@", [OFSystemInfo userDataPath]);
+#endif
+
+	PRINT(GREEN, @"CPU vendor: %@", [OFSystemInfo CPUVendor]);
+
+#if defined(OF_X86_64) || defined(OF_X86)
+	PRINT(GREEN, @"Supports MMX: %d", [OFSystemInfo supportsMMX]);
+
+	PRINT(GREEN, @"Supports SSE: %d", [OFSystemInfo supportsSSE]);
+
+	PRINT(GREEN, @"Supports SSE2: %d", [OFSystemInfo supportsSSE2]);
+
+	PRINT(GREEN, @"Supports SSE3: %d", [OFSystemInfo supportsSSE3]);
+
+	PRINT(GREEN, @"Supports SSSE3: %d", [OFSystemInfo supportsSSSE3]);
+
+	PRINT(GREEN, @"Supports SSE4.1: %d", [OFSystemInfo supportsSSE41]);
+
+	PRINT(GREEN, @"Supports SSE4.2: %d", [OFSystemInfo supportsSSE42]);
+
+	PRINT(GREEN, @"Supports AVX: %d", [OFSystemInfo supportsAVX]);
+
+	PRINT(GREEN, @"Supports AVX2: %d", [OFSystemInfo supportsAVX2]);
+#endif
+
+#ifdef OF_POWERPC
+	PRINT(GREEN, @"Supports AltiVec: %d", [OFSystemInfo supportsAltiVec]);
+#endif
+
+	[pool drain];
+}
+@end

Index: tests/TestsAppDelegate.h
==================================================================
--- tests/TestsAppDelegate.h
+++ tests/TestsAppDelegate.h
@@ -53,10 +53,17 @@
 				   inModule: module];	\
 			_fails++;			\
 		}					\
 	}
 #define R(...) (__VA_ARGS__, 1)
+#define PRINT(color, fmt, ...)					\
+	{							\
+		OFString *msg = [OFString stringWithFormat:	\
+		    @"[%@] " fmt @"\n", module, __VA_ARGS__];	\
+		[self outputString: msg				\
+			   inColor: color];			\
+	}
 
 @class OFString;
 
 enum {
 	NO_COLOR,
@@ -205,10 +212,14 @@
 @end
 
 @interface TestsAppDelegate (OFSHA512HashTests)
 - (void)SHA512HashTests;
 @end
+
+@interface TestsAppDelegate (OFSystemInfoTests)
+- (void)systemInfoTests;
+@end
 
 @interface TestsAppDelegate (OFHMACTests)
 - (void)HMACTests;
 @end
 

Index: tests/TestsAppDelegate.m
==================================================================
--- tests/TestsAppDelegate.m
+++ tests/TestsAppDelegate.m
@@ -433,10 +433,11 @@
 	[self propertyListTests];
 #if defined(OF_HAVE_PLUGINS)
 	[self pluginTests];
 #endif
 
+	[self systemInfoTests];
 	[self localizationTests];
 
 #if defined(OF_IOS)
 	[self outputString: [OFString stringWithFormat: @"%d tests failed!",
 							_fails]