3 files changed, 123 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/c_runtime/islower/test1/CMakeLists.txt b/src/pal/tests/palsuite/c_runtime/islower/test1/CMakeLists.txt
new file mode 100644
index 0000000000..b7f5ad069f
--- /dev/null
+++ b/src/pal/tests/palsuite/c_runtime/islower/test1/CMakeLists.txt
@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 2.8.12.2)
+
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+set(SOURCES
+  test1.c
+)
+
+add_executable(paltest_islower_test1
+  ${SOURCES}
+)
+
+add_dependencies(paltest_islower_test1 coreclrpal)
+
+target_link_libraries(paltest_islower_test1
+  pthread
+  m
+  coreclrpal
+)
diff --git a/src/pal/tests/palsuite/c_runtime/islower/test1/test1.c b/src/pal/tests/palsuite/c_runtime/islower/test1/test1.c
new file mode 100644
index 0000000000..c8e877b705
--- /dev/null
+++ b/src/pal/tests/palsuite/c_runtime/islower/test1/test1.c
@@ -0,0 +1,85 @@
+// 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 the PAL implementation of the islower function
+**          Check that a number of characters return the correct
+**          values for whether they are lower case or not.
+**
+**
+**===================================================================*/
+
+#include <palsuite.h>
+
+struct testCase
+{
+    int CorrectResult;
+    int character;
+};
+
+int __cdecl main(int argc, char **argv)
+{
+  
+    int result;  
+    int i;
+  
+    struct testCase testCases[] = 
+        {
+            {1,  'a'},  /* Basic cases */
+            {1, 'z'},
+            {0,  'B'},  /* Lower case */
+            {0,  '?'},  /* Characters without case */
+            {0,  230},
+            {0, '5'}
+        };
+  
+    if (PAL_Initialize(argc, argv))
+    {
+        return FAIL;
+    }
+
+  
+    /* Loop through each case. Check to see if each is lower case or
+       not.
+    */
+  
+    for(i = 0; i < sizeof(testCases) / sizeof(struct testCase); i++)
+    {
+      
+        result = islower(testCases[i].character);
+     
+        /* The return value is 'non-zero' for success.  This if condition
+         * will still work if that non-zero isn't just 1 
+         */ 
+        if ( ((testCases[i].CorrectResult == 1) && (result == 0)) ||
+             ( (testCases[i].CorrectResult == 0) && (result != 0) ))
+        {
+            Fail("ERROR: islower returned %i instead of %i for "
+                   "character %c.\n",
+                   result, testCases[i].CorrectResult, 
+                   testCases[i].character);
+        }
+    
+    }      
+  
+  
+    PAL_Terminate();
+    return PASS;
+} 
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/src/pal/tests/palsuite/c_runtime/islower/test1/testinfo.dat b/src/pal/tests/palsuite/c_runtime/islower/test1/testinfo.dat
new file mode 100644
index 0000000000..49a6fb761d
--- /dev/null
+++ b/src/pal/tests/palsuite/c_runtime/islower/test1/testinfo.dat
@@ -0,0 +1,19 @@
+# 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.
+
+Version = 1.0
+Section = C Runtime
+Function = islower
+Name = Positive Test for islower
+TYPE = DEFAULT
+EXE1 = test1
+Description
+= Tests the PAL implementation of the islower function
+= Check that a number of characters return the correct values for whether
+= they are lower case or not.
+
+
+
+
+