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diff --git a/tiler/testlib.h b/tiler/testlib.h
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+/*
+ *  testlib.h
+ *
+ *  Unit test interface API.
+ *
+ *  Copyright (C) 2009-2011 Texas Instruments, Inc.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions
+ *  are met:
+ *
+ *  *  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *
+ *  *  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ *  *  Neither the name of Texas Instruments Incorporated nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ *  THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ *  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ *  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ *  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ *  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ *  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ *  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ *  EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _TESTLIB_H_
+#define _TESTLIB_H_
+
+/* error type definitions */
+#define TESTLIB_UNAVAILABLE -65378
+#define TESTLIB_INVALID        -1
+
+#define T(test) ++i; \
+    if (!id || i == id) printf("TEST #% 3d - %s\n", i, #test); \
+    if (i == id) { \
+        printf("TEST_DESC - "); \
+        fflush(stdout); \
+        return __internal__TestLib_Report(test); \
+    }
+
+/* test run function that must be defined from the test app */
+
+/**
+ * Runs a specified test by id, or lists all test cases.  This
+ * function uses the TESTS macros, and defines each T(test) to
+ * run a test starting from id == 1, and then return the result.
+ *
+ * @author a0194118 (9/7/2009)
+ *
+ * @param id   Test case id, or 0 if only listing test cases
+ *
+ * @return Summary result: TEST_RESULT_OK, FAIL, INVALID or
+ *         UNAVAILABLE.
+ */
+#define TESTS_ \
+    int __internal__TestLib_DoList(int id) { int i = 0;
+
+#define _TESTS \
+    return TESTLIB_INVALID; }
+
+#define DEFINE_TESTS(TESTS) TESTS_ TESTS _TESTS
+
+/* internal function prototypes and defines */
+extern int __internal__TestLib_Report(int res);
+extern void __internal__TestLib_NullFn(void *ptr);
+
+#define nullfn __internal__TestLib_NullFn
+
+/**
+ * Parses argument list, prints usage on error, lists test
+ * cases, runs tests and reports results.
+ *
+ * @author a0194118 (9/12/2009)
+ *
+ * @param argc      Number of test arguments
+ * @param argv      Test argument array
+ * @param init_fn   Initialization function of void fn(void *).
+ *                  This is called before the testing.
+ * @param exit_fn   Deinit function of void fn(void *).  This is
+ *                  done after the testing concludes.
+ * @param ptr       Custom pointer that is passed into the
+ *                  initialization functions.
+ *
+ * @return # of test cases failed, 0 on success, -1 if no tests
+ *         were run because of an error or a list request.
+ */
+int TestLib_Run(int argc, char **argv, void(*init_fn)(void *),
+                void(*exit_fn)(void *), void *ptr);
+
+#endif
+