tests: Switch to unit2 test runner, with coverage

This means test files are imported as modules, not run as scripts. THey
can still be run individually if so desired. Test coverage is measured,
and an html report generated in htmlcov/. Test cases are automativally
discovered, so they need not be listed twice. An overall
passed/failed/skipped summary is printed, rather than for each file.

Arguments passed to ./test are passed on to unit2. For instance

    ./test -v

will print each test name as it is run.

.gitignore

@@ -1,7 +1,9 @@
+.coverage
 .venv
 **/.DS_Store
 MANIFEST
 build/
 dist/
 docs/_build
+htmlcov/
 *.egg-info

.travis.yml

@@ -12,7 +12,7 @@ install:
 - pip install -r dev_requirements.txt
 
 script:
-- MITOGEN_LOG_LEVEL=debug PYTHONPATH=. ${TRAVIS_BUILD_DIR}/test.sh
+- MITOGEN_LOG_LEVEL=debug PYTHONPATH=. ${TRAVIS_BUILD_DIR}/test
 
 services:
   - docker

setup.cfg

@@ -1,3 +1,10 @@
+[coverage:run]
+branch = true
+source =
+    mitogen
+omit =
+    mitogen/compat/*
+
 [flake8]
 ignore = E402,E128,W503
 exclude = mitogen/compat

test

@@ -0,0 +1,11 @@
+#/bin/sh
+
+UNIT2="$(which unit2)"
+
+coverage erase
+coverage run "${UNIT2}" discover \
+                        --start-directory "tests" \
+                        --pattern '*_test.py' \
+                        "$@"
+coverage html
+echo coverage report is at "file://$(pwd)/htmlcov/index.html"

test.sh

@@ -1,63 +0,0 @@
-#!/bin/bash
-
-timeout()
-{
-    python -c '
-import subprocess
-import sys
-import time
-
-deadline = time.time() + float(sys.argv[1])
-proc = subprocess.Popen(sys.argv[2:])
-while time.time() < deadline and proc.poll() is None:
-    time.sleep(1.0)
-
-if proc.poll() is not None:
-    sys.exit(proc.returncode)
-proc.terminate()
-print
-print >> sys.stderr, "Timeout! Command was:", sys.argv[2:]
-print
-sys.exit(1)
-    ' "$@"
-}
-
-trap 'sigint' INT
-sigint()
-{
-    echo "SIGINT received, stopping.."
-    exit 1
-}
-
-run_test()
-{
-    echo "Running $1.."
-    timeout 10 python $1 || fail=$?
-}
-
-run_test tests/ansible_helpers_test.py
-run_test tests/call_error_test.py
-run_test tests/call_function_test.py
-run_test tests/channel_test.py
-run_test tests/fakessh_test.py
-run_test tests/first_stage_test.py
-run_test tests/fork_test.py
-run_test tests/id_allocation_test.py
-run_test tests/importer_test.py
-run_test tests/latch_test.py
-run_test tests/local_test.py
-run_test tests/master_test.py
-run_test tests/module_finder_test.py
-run_test tests/nested_test.py
-run_test tests/parent_test.py
-run_test tests/receiver_test.py
-run_test tests/responder_test.py
-run_test tests/router_test.py
-run_test tests/select_test.py
-run_test tests/ssh_test.py
-run_test tests/utils_test.py
-
-if [ "$fail" ]; then
-    echo "AT LEAST ONE TEST FAILED" >&2
-    exit 1
-fi

tests/README.md

@@ -27,4 +27,4 @@ and run the tests there.
 1. Build the virtual environment ``virtualenv ../venv``
 1. Enable the virtual environment we just built ``source ../venv/bin/activate``
 1. Install Mitogen in pip editable mode ``pip install -e .``
-1. Run ``test.sh``
+1. Run ``test``

tox.ini

@@ -8,7 +8,7 @@ deps =
     -r{toxinidir}/dev_requirements.txt
 
 commands =
-    {posargs:./test.sh}
+    {posargs:./test}
 
 [testenv:docs]
 basepython = python