1 files changed, 47 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/c_runtime/isdigit/test1/test1.cpp b/src/pal/tests/palsuite/c_runtime/isdigit/test1/test1.cpp
new file mode 100644
index 0000000000..ad2344827f
--- /dev/null
+++ b/src/pal/tests/palsuite/c_runtime/isdigit/test1/test1.cpp
@@ -0,0 +1,47 @@
+// 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: Checks every character against the known range of digits.
+**
+**
+**==========================================================================*/
+
+
+#include <palsuite.h>
+
+int __cdecl main(int argc, char *argv[])
+{
+    int i;
+
+    if (PAL_Initialize(argc, argv))
+    {
+        return FAIL;
+    }
+
+
+    for (i=0; i<256; i++)
+    {
+        if (isdigit(i))
+        {
+            if (i < '0' || i > '9')
+            {
+                Fail("ERROR: isdigit returned true for '%c' (%d)!\n", i, i);
+            }
+        }
+        else
+        {
+            if (i >= '0' && i <= '9')
+            {
+                Fail("ERROR: isdigit returned false for '%c' (%d)!\n", i, i);
+            }
+        }
+    }
+
+    PAL_Terminate();
+    return PASS;
+}