1 files changed, 73 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/locale_info/MultiByteToWideChar/test3/test3.cpp b/src/pal/tests/palsuite/locale_info/MultiByteToWideChar/test3/test3.cpp
new file mode 100644
index 0000000000..1b3a4bd4f5
--- /dev/null
+++ b/src/pal/tests/palsuite/locale_info/MultiByteToWideChar/test3/test3.cpp
@@ -0,0 +1,73 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+/*============================================================================
+**
+** Source: test3.c
+**
+** Purpose: Tests that MultiByteToWideChar correctly handles the following 
+**          error conditions: insufficient buffer space, invalid code pages,
+**          and invalid flags.
+**
+**
+**==========================================================================*/
+
+#include <palsuite.h>
+
+
+int __cdecl main(int argc, char *argv[])
+{    
+    char mbStr[128];
+    WCHAR wideStr[128];
+    int ret;
+    int i;
+
+    if (PAL_Initialize(argc, argv))
+    {
+        return FAIL;
+    }
+
+    for (i=0; i<128; i++)
+    {
+        mbStr[i] = 'a';
+        wideStr[i] = 0;
+    }
+
+    mbStr[127] = 0;
+
+    /* try with insufficient buffer space */
+    ret = MultiByteToWideChar(CP_ACP, 0, mbStr, -1, wideStr, 10);
+    if (ret != 0)
+    {
+        Fail("MultiByteToWideChar did not return an error!\n"
+            "Expected return of 0, got %d", ret);
+    }
+
+    ret = GetLastError();
+    if (ret != ERROR_INSUFFICIENT_BUFFER)
+    {
+        Fail("MultiByteToWideChar did not set the last error to "
+            "ERROR_INSUFFICIENT_BUFFER!\n");
+    }
+
+    /* try with a wacky code page */
+    ret = MultiByteToWideChar(-1, 0, mbStr, -1, wideStr, 128);
+    if (ret != 0)
+    {
+        Fail("MultiByteToWideChar did not return an error!\n"
+            "Expected return of 0, got %d", ret);
+    }
+
+    ret = GetLastError();
+    if (ret != ERROR_INVALID_PARAMETER)
+    {
+        Fail("MultiByteToWideChar did not set the last error to "
+            "ERROR_INVALID_PARAMETER!\n");
+    }
+
+    PAL_Terminate();
+
+    return PASS;
+}
+