1 files changed, 62 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/c_runtime/wcsstr/test1/test1.c b/src/pal/tests/palsuite/c_runtime/wcsstr/test1/test1.c
new file mode 100644
index 0000000000..8296a74983
--- /dev/null
+++ b/src/pal/tests/palsuite/c_runtime/wcsstr/test1/test1.c
@@ -0,0 +1,62 @@
+// 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:  test1.c
+**
+** Purpose: 
+** Tests that wcsstr correctly find substrings in wide stings, including 
+** returning NULL when the substring can't be found.
+**
+**
+**==========================================================================*/
+
+#include <palsuite.h>
+
+int __cdecl main(int argc, char *argv[])
+{
+    WCHAR *string;
+    WCHAR *key1;
+    WCHAR *key2;
+    WCHAR key3[] = { 0 };
+    WCHAR *result;
+        
+    if (PAL_Initialize(argc, argv))
+    {
+        return FAIL;
+    }
+
+    string = convert("foo bar baz bar");
+    key1 = convert("bar");
+    key2 = convert("Bar");
+
+    result = wcsstr(string, key1);
+    if (result != string + 4)
+    {
+        Fail("ERROR: Got incorrect result in scanning \"%s\" for \"%s\".\n"
+            "Expected to get pointer to %#p, got %#p\n", convertC(string),
+            convertC(key1), string + 4, result);
+    }
+
+
+    result = wcsstr(string, key2);
+    if (result != NULL)
+    {
+        Fail("ERROR: Got incorrect result in scanning \"%s\" for \"%s\".\n"
+            "Expected to get pointer to %#p, got %#p\n", convertC(string),
+            convertC(key2), NULL, result);
+    }
+
+    result = wcsstr(string, key3);
+    if (result != string)
+    {
+        Fail("ERROR: Got incorrect result in scanning \"%s\" for \"%s\".\n"
+            "Expected to get pointer to %#p, got %#p\n", convertC(string),
+            convertC(key3), string, result);
+    }
+
+    PAL_Terminate();
+    return PASS;
+}