Index: /trunk/src/VBox/Runtime/testcase/Makefile.kmk
===================================================================
--- /trunk/src/VBox/Runtime/testcase/Makefile.kmk	(revision 50414)
+++ /trunk/src/VBox/Runtime/testcase/Makefile.kmk	(revision 50415)
@@ -89,4 +89,5 @@
 	tstMove \
 	tstRTMp-1 \
+	tstRTNetIPv4 \
 	tstOnce \
 	tstRTPath \
@@ -436,4 +437,7 @@
 tstRTMp-1_SOURCES = tstRTMp-1.cpp
 
+tstRTNetIPv4_TEMPLATE = VBOXR3TSTEXE
+tstRTNetIPv4_SOURCES = tstRTNetIPv4.cpp
+
 tstNoCrt-1_TEMPLATE = VBOXR3TSTEXE
 tstNoCrt-1_DEFS = RT_WITHOUT_NOCRT_WRAPPER_ALIASES
Index: /trunk/src/VBox/Runtime/testcase/tstRTNetIPv4.cpp
===================================================================
--- /trunk/src/VBox/Runtime/testcase/tstRTNetIPv4.cpp	(revision 50415)
+++ /trunk/src/VBox/Runtime/testcase/tstRTNetIPv4.cpp	(revision 50415)
@@ -0,0 +1,94 @@
+/* $Id$ */
+/** @file
+ * IPRT Testcase - IPv4.
+ */
+
+/*
+ * Copyright (C) 2008-2010 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <iprt/net.h>
+
+#include <iprt/err.h>
+#include <iprt/initterm.h>
+#include <iprt/test.h>
+
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+#define CHECKADDR(String, rcExpected, ExpectedAddr)                     \
+    do {                                                                \
+        RTNETADDRIPV4 Addr;                                             \
+        int rc2 = RTNetStrToIPv4Addr(String, &Addr);                    \
+        if ((rcExpected) && !rc2)                                       \
+        {                                                               \
+            RTTestIFailed("at line %d: '%s': expected %Rrc got %Rrc\n", \
+                          __LINE__, String, (rcExpected), rc2);         \
+        }                                                               \
+        else if (   (rcExpected) != rc2                                 \
+                 || (   rc2 == VINF_SUCCESS                             \
+                     && RT_H2N_U32_C(ExpectedAddr) != Addr.u))          \
+        {                                                               \
+            RTTestIFailed("at line %d: '%s': expected %Rrc got %Rrc,"   \
+                          " expected address %RTnaipv4 got %RTnaipv4\n", \
+                          __LINE__, String, rcExpected, rc2,            \
+                          RT_H2N_U32_C(ExpectedAddr), Addr.u);          \
+        }                                                               \
+    } while (0)
+
+#define GOODADDR(String, ExpectedAddr) \
+    CHECKADDR(String, VINF_SUCCESS, ExpectedAddr)
+
+#define BADADDR(String) \
+    CHECKADDR(String, VERR_INVALID_PARAMETER, 0)
+
+
+int main()
+{
+    RTTEST hTest;
+    int rc = RTTestInitAndCreate("tstRTNetIPv4", &hTest);
+    if (rc)
+        return rc;
+    RTTestBanner(hTest);
+
+    GOODADDR("1.2.3.4",         0x01020304);
+    GOODADDR("0.0.0.0",         0x00000000);
+    GOODADDR("255.255.255.255", 0xFFFFFFFF);
+
+    /* leading and trailing whitespace is allowed */
+    GOODADDR(" 1.2.3.4 ",       0x01020304);
+    GOODADDR("\t1.2.3.4\t",     0x01020304);
+
+    BADADDR("1.2.3.4x");
+    BADADDR("1.2.3.4.");
+    BADADDR("1.2.3");
+    BADADDR("0x1.2.3.4");
+    BADADDR("666.2.3.4");
+    BADADDR("1.666.3.4");
+    BADADDR("1.2.666.4");
+    BADADDR("1.2.3.666");
+
+    return RTTestSummaryAndDestroy(hTest);
+}