Move tests into their own directory

As we add more tests this will make it easier to navigate.

Author: jhesketh

pip_check_reqs/test_find_missing_reqs.py renamed to tests/test_find_missing_reqs.py

@@ -11,7 +11,7 @@
 import pytest
 import pretend
 
-from . import find_missing_reqs
+from pip_check_reqs import find_missing_reqs
 
 
 @pytest.fixture

tox.ini

@@ -6,7 +6,7 @@ deps =
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt
 commands =
-    coverage run --source pip_check_reqs/find_missing_reqs.py \
+    coverage run --source pip_check_reqs/ \
         -m pytest --strict []
     coverage report -m --fail-under 100
 
@@ -19,10 +19,9 @@ norecursedirs = .git .tox *.egg build
 
 [testenv:pep8]
 deps = flake8
-commands = flake8 pip_check_reqs
+commands = flake8 pip_check_reqs tests
 
 [testenv:pip-missing-reqs]
 # Overwrite deps so not to dirty the environment
 deps = -r{toxinidir}/requirements.txt
-commands = python -m pip_check_reqs.find_missing_reqs \
-    --ignore-file=pip_check_reqs/test* pip-check-reqs
+commands = python -m pip_check_reqs.find_missing_reqs pip_check_reqs