Move Assert directory into unit-testing

Author: gjbex

source-code/code-testing/README.md

@@ -18,10 +18,6 @@ What is it?
     defined by `unittest.TestCase`.
 1. `run_test.sh`: shell script that actually runs the test code, and that
     uses discovery to minimize maintenance of test code.
-1. `Asserts`: `assert` is a Python statement, so it not part of unit
-    testing per se.  It is mainly intended for contract-based programming
-    and one can prevent code to be emitted for asserts by using the
-    `-O` optimizatino flag when running the code.
 
 Note
 ----

source-code/code-testing/Asserts/README.md renamed to source-code/unit-testing/Asserts/README.md

@@ -1,13 +1,19 @@
 # Unittest
+
 Testing is an integral part of the software development process.  Unit
 testing is a popular technique, and is used in test-driven development
 (TDD).  Python's `unittest` module in its standard library is quite
 versatile.
 
 ## What is it?
+
 1. `Simple`: a simple example demonstrating useful assertion function in
     unittest`.
 1. `Fixtures`: an example of the use of fixtures for unit testing in the
     context of database testing.
 1. `PyTest`: `pytest` is a more modern and convenient testing framework
     than that provided by Python's standard library.
+1. `Asserts`: `assert` is a Python statement, so it not part of unit
+    testing per se.  It is mainly intended for contract-based programming
+    and one can prevent code to be emitted for asserts by using the
+    `-O` optimizatino flag when running the code.