New Testing Setup documentation

TESTING.md

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+# Running Anchore Engine Tests
+Anchore Engine is covered by automated Unit, Integration, and Functional Tests.
+Each type can be run locally using the following steps. 
+
+All require a local checkout of Anchore Engine. Ensure steps are executed from repository root. 
+
+## Running Unit Tests
+###Set Up
+  * \<Some Set Up Steps>
+<br>
+
+###Run Tests 
+* From PyCharm:
+  * Select 'Run PyTest' for test script to run
+* From Terminal:
+  * `make test-unit`
+
+## Running Integration Tests
+
+###Set Up
+  * \<Some Set Up Steps>
+<br>
+
+###Run Tests
+* From PyCharm:
+  * Select 'Run PyTest' for test script to run
+* From Container:
+  * `sh setup_deps.sh`
+<br>
+
+###Clean Up
+* If ran from container
+  * `teardown_deps`
+
+## Running Functional Tests
+###Set Up
+* `source ./tests/functional/local.env`
+* `sh ./scripts/ci/prep-local-docker-registry-credentials`
+* `make compose-up`
+<br>
+
+###Run Tests 
+* From PyCharm:
+  * Select 'Run PyTest' for test script to run
+* From Container:
+  * `docker exec -it ci_job-runner_1 /bin/bash`
+  * `pytest tests/functional/.../some_test.py`
+  <br>
+
+###Clean Up
+*:q