add unity to test project

tests/unity/docs/Unity Summary.txt

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+==============
+Unity Test API
+==============
+
+[Copyright (c) 2007 - 2012 Unity Project by Mike Karlesky, Mark VanderVoord, and Greg Williams]
+
+-------------
+Running Tests 
+------------- 
+
+RUN_TEST(func, linenum)
+
+Each Test is run within the macro RUN_TEST.  This macro performs necessary setup before the test is called and handles cleanup and result tabulation afterwards.
+
+--------------
+Ignoring Tests
+--------------
+
+There are times when a test is incomplete or not valid for some reason.  At these times, TEST_IGNORE can be called.  Control will immediately be returned to the caller of the test, and no failures will be returned.
+
+TEST_IGNORE()
+
+Ignore this test and return immediately
+
+TEST_IGNORE_MESSAGE (message)
+
+Ignore this test and return immediately.  Output a message stating why the test was ignored.
+
+--------------
+Aborting Tests
+--------------
+
+There are times when a test will contain an infinite loop on error conditions, or there may be reason to escape from the test early without executing the rest of the test.  A pair of macros support this functionality in Unity.  The first (TEST_PROTECT) sets up the feature, and handles emergency abort cases.  TEST_ABORT can then be used at any time within the tests to return to the last TEST_PROTECT call.
+
+TEST_PROTECT()
+
+Setup and Catch macro
+
+TEST_ABORT()
+
+Abort Test macro
+
+Example:
+
+main()
+{
+    if (TEST_PROTECT() == 0)
+    {
+        MyTest();
+    }
+}
+
+If MyTest calls TEST_ABORT, program control will immediately return to TEST_PROTECT with a non-zero return value.
+
+
+=======================
+Unity Assertion Summary
+=======================
+
+--------------------
+Basic Validity Tests
+--------------------
+
+TEST_ASSERT_TRUE(condition)
+
+Evaluates whatever code is in condition and fails if it evaluates to false
+
+TEST_ASSERT_FALSE(condition)
+
+Evaluates whatever code is in condition and fails if it evaluates to true
+
+TEST_ASSERT(condition)
+
+Another way of calling TEST_ASSERT_TRUE
+
+TEST_ASSERT_UNLESS(condition)
+
+Another way of calling TEST_ASSERT_FALSE
+
+TEST_FAIL()
+TEST_FAIL_MESSAGE(message)
+
+This test is automatically marked as a failure.  The message is output stating why.
+
+------------------------------
+Numerical Assertions: Integers
+------------------------------
+
+TEST_ASSERT_EQUAL_INT(expected, actual)
+TEST_ASSERT_EQUAL_INT8(expected, actual)
+TEST_ASSERT_EQUAL_INT16(expected, actual)
+TEST_ASSERT_EQUAL_INT32(expected, actual)
+TEST_ASSERT_EQUAL_INT64(expected, actual)
+
+Compare two integers for equality and display errors as signed integers. A cast will be performed
+to your natural integer size so often this can just be used.  When you need to specify the exact size,
+like when comparing arrays, you can use a specific version:
+
+TEST_ASSERT_EQUAL_UINT(expected, actual)
+TEST_ASSERT_EQUAL_UINT8(expected, actual)
+TEST_ASSERT_EQUAL_UINT16(expected, actual)
+TEST_ASSERT_EQUAL_UINT32(expected, actual)
+TEST_ASSERT_EQUAL_UINT64(expected, actual)
+
+Compare two integers for equality and display errors as unsigned integers.  Like INT, there are 
+variants for different sizes also.
+
+TEST_ASSERT_EQUAL_HEX(expected, actual)
+TEST_ASSERT_EQUAL_HEX8(expected, actual)
+TEST_ASSERT_EQUAL_HEX16(expected, actual)
+TEST_ASSERT_EQUAL_HEX32(expected, actual)
+TEST_ASSERT_EQUAL_HEX64(expected, actual)
+
+Compares two integers for equality and display errors as hexadecimal.  Like the other integer comparisons,
+you can specify the size... here the size will also effect how many nibbles are shown (for example, HEX16 
+will show 4 nibbles).
+
+_ARRAY
+
+You can append _ARRAY to any of these macros to make an array comparison of that type.  Here you will
+need to care a bit more about the actual size of the value being checked.  You will also specify an
+additional argument which is the number of elements to compare.  For example:
+
+TEST_ASSERT_EQUAL_HEX8_ARRAY(expected, actual, elements)
+
+TEST_ASSERT_EQUAL(expected, actual)
+
+Another way of calling TEST_ASSERT_EQUAL_INT
+
+TEST_ASSERT_INT_WITHIN(delta, expected, actual)
+
+Asserts that the actual value is within plus or minus delta of the expected value.  This also comes in 
+size specific variants.
+
+
+-----------------------------
+Numerical Assertions: Bitwise
+-----------------------------
+
+TEST_ASSERT_BITS(mask, expected, actual)
+
+Use an integer mask to specify which bits should be compared between two other integers.  High bits in the mask are compared, low bits ignored.
+
+TEST_ASSERT_BITS_HIGH(mask, actual)
+
+Use an integer mask to specify which bits should be inspected to determine if they are all set high.  High bits in the mask are compared, low bits ignored.
+
+TEST_ASSERT_BITS_LOW(mask, actual)
+
+Use an integer mask to specify which bits should be inspected to determine if they are all set low.  High bits in the mask are compared, low bits ignored.
+
+TEST_ASSERT_BIT_HIGH(bit, actual)
+
+Test a single bit and verify that it is high.  The bit is specified 0-31 for a 32-bit integer.
+
+TEST_ASSERT_BIT_LOW(bit, actual)
+
+Test a single bit and verify that it is low.  The bit is specified 0-31 for a 32-bit integer.
+
+----------------------------
+Numerical Assertions: Floats
+----------------------------
+
+TEST_ASSERT_FLOAT_WITHIN(delta, expected, actual)
+
+Asserts that the actual value is within plus or minus delta of the expected value.
+
+TEST_ASSERT_EQUAL_FLOAT(expected, actual)
+TEST_ASSERT_EQUAL_DOUBLE(expected, actual)
+
+Asserts that two floating point values are "equal" within a small % delta of the expected value.
+
+-----------------
+String Assertions
+-----------------
+
+TEST_ASSERT_EQUAL_STRING(expected, actual)
+
+Compare two null-terminate strings.  Fail if any character is different or if the lengths are different.
+
+TEST_ASSERT_EQUAL_STRING_MESSAGE(expected, actual, message)
+
+Compare two null-terminate strings.  Fail if any character is different or if the lengths are different. Output a custom message on failure.
+
+------------------
+Pointer Assertions
+------------------
+
+Most pointer operations can be performed by simply using the integer comparisons above.  However, a couple of special cases are added for clarity.
+
+TEST_ASSERT_NULL(pointer)
+
+Fails if the pointer is not equal to NULL
+
+TEST_ASSERT_NOT_NULL(pointer)
+
+Fails if the pointer is equal to NULL
+
+
+-----------------
+Memory Assertions
+-----------------
+
+TEST_ASSERT_EQUAL_MEMORY(expected, actual, len)
+
+Compare two blocks of memory.  This is a good generic assertion for types that can't be coerced into acting like
+standard types... but since it's a memory compare, you have to be careful that your data types are packed.
+
+--------
+_MESSAGE
+--------
+
+you can append _MESSAGE to any of the macros to make them take an additional argument.  This argument
+is a string that will be printed at the end of the failure strings.  This is useful for specifying more
+information about the problem.
+

tests/unity/docs/license.txt

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+ Copyright (c) 2007-2010 Mike Karlesky, Mark VanderVoord, Greg Williams
+
+ Permission is hereby granted, free of charge, to any person
+ obtaining a copy of this software and associated documentation
+ files (the "Software"), to deal in the Software without
+ restriction, including without limitation the rights to use,
+ copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software, and to permit persons to whom the
+ Software is furnished to do so, subject to the following
+ conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ The end-user documentation included with the redistribution, if 
+ any, must include the following acknowledgment: "This product 
+ includes software developed for the Unity Project, by Mike Karlesky,
+ Mark VanderVoord, and Greg Williams and other contributors", in 
+ the same place and form as other third-party acknowledgments. 
+ Alternately, this acknowledgment may appear in the software 
+ itself, in the same form and location as other such third-party 
+ acknowledgments.
+ 
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ OTHER DEALINGS IN THE SOFTWARE.