tests: Remove aggregate_tests.py

This was essentially unused now (originally it was used to
randomize the test order).

Signed-off-by: Jussi Kukkonen <[email protected]>

Author: jku

docs/CONTRIBUTING.rst

@@ -39,21 +39,18 @@ you need debug/run outside ``tox``.
 Unit tests
 ----------
 
-More specifically, the Update Framework's test suite can be executed by invoking
-the test aggregation script inside the *tests* subdirectory. ``tuf`` and its
-dependencies must already be installed.
+test suite can be executed directly as well (in this case the environment managed by tox is
+not used):
 ::
 
-     cd tests/
-     python3 aggregate_tests.py
+     python3 -m unittest
 
 
 Individual tests can also be executed. Optional ``-v`` flags can be added to
 increase log level up to DEBUG (``-vvvv``).
 ::
 
-     cd tests/
-     python3 test_updater_ng.py -v
+     python3 tests/test_updater_ng.py -v
 
 
 Coverage
@@ -65,7 +62,7 @@ via PyPI).
 ::
 
      cd tests/
-     coverage run aggregate_tests.py && coverage report
+     coverage run -m unittest
 
 
 Auto-formatting

tests/aggregate_tests.py

@@ -9,14 +9,9 @@ envlist = lint,docs,py
 skipsdist = true
 
 [testenv]
-# TODO: Consider refactoring the tests to not require the aggregation script
-# being invoked from the `tests` directory. This seems to be the convention and
-# would make use of other testing tools such as coverage/coveralls easier.
-changedir = tests
-
 commands =
     python3 --version
-    python3 -m coverage run aggregate_tests.py
+    python3 -m coverage run -m unittest
     python3 -m coverage report --rcfile {toxinidir}/pyproject.toml -m --fail-under 97
 
 deps =
@@ -37,7 +32,7 @@ commands_pre =
     python3 -m pip install --force-reinstall git+https://github.com/secure-systems-lab/securesystemslib.git@main#egg=securesystemslib[crypto,pynacl]
 
 commands =
-    python3 -m coverage run aggregate_tests.py
+    python3 -m coverage run -m unittest
     python3 -m coverage report  --rcfile {toxinidir}/pyproject.toml -m
 
 [testenv:lint]