diff --git a/.coveragerc b/.coveragerc
index c1b7a4327f8d655d75b7cea1e93cf4d1b19892b5..d68648e8c096f0300e16d601dbe217ddb7a38a72 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -1,2 +1,5 @@
 [run]
-include = gimmecert/*
\ No newline at end of file
+include = gimmecert/*
+
+[report]
+fail_under = 100
\ No newline at end of file
diff --git a/docs/development.rst b/docs/development.rst
index 28ca2a156d90f9b38664e09a5e62648ea2c75ae7..ef4d2455c2d08b18bee1d8dd6eeca9766611b62b 100644
--- a/docs/development.rst
+++ b/docs/development.rst
@@ -67,9 +67,6 @@ Testing
 Project includes both unit tests (within ``tests/`` directory) , and
 functional tests (within ``functional_tests/`` directory).
 
-Running the tests will also generate coverage report in HTML format,
-stored within directory ``coverage/``.
-
 Tests can be run in a number of different ways, depending on what you
 want to test and how.
 
@@ -83,21 +80,47 @@ repository root::
 
   pytest
 
+Tests can be also run with coverage checks. By default coverage is
+configured to report to standard output. Report will only list files
+which lack coverage. For each file a percentage will be shown, as well
+as line numbers that were not covered by tests. To include coverage
+checks, run tests with::
+
+  pytest --cov
+
+.. warning::
+   Gimmecert project has 100% coverage requirement. Anything below
+   will trigger failures when coverage checks are run.
+
+Should you desire to generate coverage report in HTML format, run
+(coverage report will be put into directory ``coverage/``)::
+
+  pytest --cov --cov-report=html:coverage/
+
 Functional tests must be run explicitly (since they tend to take more
 time), with::
 
   pytest functional_tests/
 
-Linting checks are performed as part of testing. Linting checks can
-easily be run with command::
+In addition to proper linting, implemented code should be pruned of
+unused imports and variables. Linting should be conformant to PEP8,
+with the exception of line length, which is allowed to be up to 160
+characters. Linting and code sanity checks are not executed
+automatically, but can easily be run with::
 
   flake8
 
+Documentation should be buildable at all times. Documentation build
+can be triggered with a simple::
+
+  cd docs/
+  make html
+
 Tests can also be run using `tox <https://tox.readthedocs.io/>`_:
 
 .. note::
-   When running tests via ``tox``, functional tests are included as
-   well.
+   When running tests via ``tox``, functional tests and coverage
+   checks are included as well.
 
 ::
 
diff --git a/pytest.ini b/pytest.ini
index aee70046d0190540df49774a2a0fc49b5f6a72cf..eed06c2e48efe6a7278ab7150d4cbcac261f3fb7 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,2 +1,3 @@
 [pytest]
-addopts = --flake8 --cov --cov-report=html:coverage
\ No newline at end of file
+addopts = --cov-report=term-missing:skip-covered
+testpaths = tests/
\ No newline at end of file
diff --git a/setup.py b/setup.py
index 260b1ec9e1873949dde3d905fa3f015af21e4b4a..41019f205ed75e1e94e85e5434e0353ad21f9a1d 100755
--- a/setup.py
+++ b/setup.py
@@ -37,11 +37,10 @@ test_lint_requirements = [
     'flake8>=3.5,<3.6',
 ]
 
-test_requirements = test_lint_requirements + [
+test_requirements = [
     'freezegun>=0.3,<0.4',
     'pytest>=3.4,<3.5',
     'pytest-cov>=2.5,<2.6',
-    'pytest-flake8>=0.9,<0.10',
     'tox>=2.9,<2.10',
 ]
 
diff --git a/tox.ini b/tox.ini
index 0541b6cc6c26a3a2150fc3a430807b3775694228..89b12037325e5f4ac238637ce0fa875c09f1ee43 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,12 +1,13 @@
 [tox]
 envlist = {py34,py35,py36},lint,doc
 
-
 [testenv]
 whitelist_externals =
   make
 
 basepython =
+  doc: python3
+  lint: python3
   py34: python3.4
   py35: python3.5
   py36: python3.6
@@ -15,20 +16,25 @@ deps =
   .[test]
 
 commands =
-  pytest --basetemp={envtmpdir}
-  pytest --basetemp={envtmpdir} functional_tests/
+  # Must specify cov-report explicitly, otherwise coverage starts
+  # going through the tests as well.
+  pytest --cov --cov-report=term-missing:skip-covered --basetemp={envtmpdir} tests/ functional_tests/
 
 [testenv:lint]
-basepython = python3
 deps =
   .[testlint]
 commands =
   flake8
 
 [testenv:doc]
-basepython = python3
 deps =
   .[doc]
-changedir = {toxinidir}/docs/
+setenv =
+  # Override Sphinx build directory so we do not trample over user's
+  # build in source directory.
+  BUILDDIR={envtmpdir}/docs_build
 commands =
-  make html
\ No newline at end of file
+  # Easier to run than changing directory with separate comand. -e
+  # will ensure the BUILDDIR gets picked-up and overrides the Makefile
+  # content.
+  make -C docs/ -e html