Imported Upstream version 1.0.0.9127upstream/1.0.0.9127

1 files changed, 116 insertions, 0 deletions

diff --git a/src/pal/tests/palsuite/c_runtime/memmove/test1/test1.cpp b/src/pal/tests/palsuite/c_runtime/memmove/test1/test1.cpp
new file mode 100644
index 0000000000..8279d67139
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+++ b/src/pal/tests/palsuite/c_runtime/memmove/test1/test1.cpp
@@ -0,0 +1,116 @@
+// 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: Test that memmove correctly copies text from one buffer
+**          to another even when the buffers overlap.
+**
+**
+**==========================================================================*/
+
+#include <palsuite.h>
+
+int __cdecl main(int argc, char **argv)
+{
+    char testA[11] = "abcdefghij";
+    char testB[15] = "aabbccddeeffgg";
+    char testC[15] = "aabbccddeeffgg";
+    char testD[15] = "aabbccddeeffgg";
+    char insString[4] = "zzz";
+    char *retVal;
+
+    if (PAL_Initialize(argc, argv))
+    {
+        return FAIL;
+    }
+
+    /* move a string onto itself */
+    retVal = (char *)memmove(testA + 2, testA, 8);
+    if (retVal != testA + 2)
+    {
+        Fail("The return value should have been the value of the destination"
+             "pointer, but wasn't\n");
+    }
+
+    /*Check the most likely error*/
+    if (memcmp(testA, "ababababab", 11) == 0)
+    {
+        Fail("memmove should have saved the characters in the region of"
+             " overlap between source and destination, but didn't.\n");
+    }
+
+    if (memcmp(testA, "ababcdefgh", 11) != 0)
+    {
+        /* not sure what exactly went wrong. */
+        Fail("memmove was called on a region containing the characters"
+             " \"abcdefghij\".  It was to move the first 8 positions to"
+             " the last 8 positions, giving the result \"ababcdefgh\". "
+             " Instead, it gave the result \"%s\".\n", testA);
+    }
+
+    /* move a string to the front of testB */
+    retVal = (char *)memmove(testB, insString, 3);
+    if(retVal != testB)
+    {
+        Fail("memmove: The function did not return the correct "
+        "string.\n");
+    }
+
+    if(memcmp(testB, "zzzbccddeeffgg",15) != 0)
+    {
+        Fail("memmove: The function failed to move the string "
+        "correctly.\n");
+    }
+
+
+    /* move a string to the middle of testC */
+    retVal = (char*)memmove(testC+5, insString, 3);
+    if(retVal != testC+5)
+    {
+        Fail("memmove: The function did not return the correct "
+        "string.\n");
+    }
+
+    if(memcmp(testC, "aabbczzzeeffgg",15) != 0)
+    {
+        Fail("memmove: The function failed to move the string "
+        "correctly.\n");
+    }
+
+
+    /* move a string to the end of testD */
+    retVal = (char*)memmove(testD+11, insString, 3);
+    if(retVal != testD+11)
+    {
+        Fail("memmove: The function did not return the correct "
+        "string.\n");
+    }
+
+    if(memcmp(testD, "aabbccddeefzzz",15) != 0)
+    {
+        Fail("memmove: The function failed to move the string "
+        "correctly.\n");
+    }
+
+    PAL_Terminate();
+    return PASS;
+
+}
+
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