Collect unit test coverage

Author: dflook

.config/.coveragerc

@@ -0,0 +1,16 @@
+[run]
+branch = true
+source = python_minifier
+parallel = true
+context = ${COVERAGE_CONTEXT}
+
+[report]
+exclude_lines =
+    pragma: no cover
+    raise NotImplementedError
+    if TYPE_CHECKING:
+
+[paths]
+source =
+    src/python_minifier
+    */site-packages/python_minifier

.config/.coveragerc-legacy

@@ -0,0 +1,15 @@
+[run]
+branch = true
+source = python_minifier
+parallel = true
+
+[report]
+exclude_lines =
+    pragma: no cover
+    raise NotImplementedError
+    if TYPE_CHECKING:
+
+[paths]
+source =
+    src/python_minifier
+    */site-packages/python_minifier

.gitignore

@@ -18,3 +18,4 @@ docs/source/transforms/*.min.py
 .circleci-config.yml
 .coverage
 .mypy_cache/
+.tox/

tox.ini

@@ -4,246 +4,68 @@ envlist = python27,python33,python34,python35,python36,python37,python38,python3
 [testenv]
 setenv =
     PYTHONHASHSEED = 0
+    COVERAGE_FILE = {toxinidir}/.coverage.{envname}
+    COVERAGE_CONTEXT = {envname}
+deps = -r{toxinidir}/tox/{envname}-requirements.txt
 commands =
-    pytest {posargs:test} --junitxml=junit-{envname}.xml --verbose
+    pytest {posargs:test --cov --cov-config={toxinidir}/.config/.coveragerc} --junitxml=junit-{envname}.xml --verbose
 
 [testenv:python27]
 basepython = /usr/bin/python2.7
-deps =
-    atomicwrites==1.4.1
-    attrs==20.3.0
-    backports.functools-lru-cache==1.6.6
-    configparser==4.0.2
-    contextlib2==0.6.0.post1
-    funcsigs==1.0.2
-    importlib-metadata==2.1.3
-    more-itertools==5.0.0
-    pathlib2==2.3.7.post1
-    pluggy==0.13.1
-    py==1.11.0
-    pytest==4.5.0
-    PyYAML==5.1
-    scandir==1.10.0
-    sh==1.12.14
-    six==1.16.0
-    typing==3.10.0.0
-    wcwidth==0.2.13
-    zipp==1.2.0
 
 [testenv:python33]
 basepython = /usr/bin/python3.3
-deps =
-    py==1.4.34
-    pytest==3.2.5
-    PyYAML==3.13
-    sh==1.12.14
+setenv =
+    PYTHONHASHSEED = 0
+    COVERAGE_FILE = {toxinidir}/.coverage.{envname}
+commands =
+    pytest {posargs:test --cov --cov-config={toxinidir}/.config/.coveragerc-legacy} --junitxml=junit-{envname}.xml --verbose
 
 [testenv:python34]
 basepython = /usr/bin/python3.4
-deps =
-    atomicwrites==1.4.1
-    attrs==20.3.0
-    importlib-metadata==1.1.3
-    more-itertools==7.2.0
-    pathlib2==2.3.7.post1
-    pluggy==0.13.1
-    py==1.10.0
-    pytest==4.5.0
-    PyYAML==5.1
-    scandir==1.10.0
-    sh==1.12.14
-    six==1.16.0
-    typing==3.10.0.0
-    wcwidth==0.2.13
-    zipp==1.2.0
+setenv =
+    PYTHONHASHSEED = 0
+    COVERAGE_FILE = {toxinidir}/.coverage.{envname}
+commands =
+    pytest {posargs:test --cov --cov-config={toxinidir}/.config/.coveragerc-legacy} --junitxml=junit-{envname}.xml --verbose
 
 [testenv:python35]
 basepython = /usr/bin/python3.5
-deps =
-    atomicwrites==1.4.1
-    attrs==20.3.0
-    importlib-metadata==2.1.3
-    more-itertools==8.14.0
-    pathlib2==2.3.7.post1
-    pluggy==0.13.1
-    py==1.11.0
-    pytest==4.5.0
-    PyYAML==5.1
-    sh==1.12.14
-    six==1.16.0
-    wcwidth==0.2.13
-    zipp==1.2.0
 
 [testenv:python36]
 basepython = /usr/bin/python3.6
-deps =
-    atomicwrites==1.4.1
-    attrs==20.3.0
-    importlib-metadata==4.8.3
-    more-itertools==8.14.0
-    pluggy==0.13.1
-    py==1.11.0
-    pytest==4.5.0
-    PyYAML==5.1
-    sh==1.12.14
-    six==1.16.0
-    typing-extensions==4.1.1
-    wcwidth==0.2.13
-    zipp==3.6.0
 
 [testenv:python37]
 basepython = /usr/bin/python3.7
-deps =
-    atomicwrites==1.4.1
-    attrs==20.3.0
-    importlib-metadata==6.7.0
-    more-itertools==9.1.0
-    pluggy==0.13.1
-    py==1.11.0
-    pytest==4.5.0
-    PyYAML==5.1
-    sh==1.12.14
-    six==1.16.0
-    typing-extensions==4.7.1
-    wcwidth==0.2.13
-    zipp==3.15.0
 
 [testenv:python38]
 basepython = /usr/bin/python3.8
-deps =
-    atomicwrites==1.4.1
-    attrs==20.3.0
-    more-itertools==10.5.0
-    pluggy==0.13.1
-    py==1.11.0
-    pytest==4.5.0
-    PyYAML==5.1
-    sh==1.12.14
-    six==1.16.0
-    wcwidth==0.2.13
 
 [testenv:python39]
 basepython = /usr/local/bin/python3.9
-deps =
-    exceptiongroup==1.2.2
-    iniconfig==2.0.0
-    packaging==24.1
-    pluggy==1.5.0
-    pytest==8.3.3
-    PyYAML==6.0.2
-    sh==2.0.7
-    tomli==2.0.1
 
 [testenv:python310]
 basepython = /usr/local/bin/python3.10
 setenv =
+    PYTHONHASHSEED = 0
+    COVERAGE_FILE = {toxinidir}/.coverage.{envname}
+    COVERAGE_CONTEXT = {envname}
     PIP_CONSTRAINT={toxinidir}/tox/pyyaml-5.4.1-constraints.txt
-deps =
-    attrs==24.2.0
-    iniconfig==2.0.0
-    packaging==24.1
-    pluggy==0.13.1
-    py==1.11.0
-    pyperf==2.2.0
-    pytest==6.2.4
-    PyYAML==5.4.1
-    sh==1.14.2
-    toml==0.10.2
 
 [testenv:python311]
 basepython = /usr/local/bin/python3.11
-deps =
-    attrs==24.2.0
-    iniconfig==2.0.0
-    packaging==24.1
-    pluggy==1.5.0
-    py==1.11.0
-    pyperf==2.4.1
-    pytest==7.1.2
-    PyYAML==6.0
-    sh==1.14.3
-    tomli==2.0.1
 
 [testenv:python312]
 basepython = /usr/local/bin/python3.12
-deps =
-    iniconfig==2.0.0
-    packaging==24.1
-    pip==24.2
-    pluggy==1.5.0
-    psutil==6.0.0
-    pyperf==2.6.1
-    pytest==7.4.2
-    PyYAML==6.0.1
-    sh==2.0.6
 
 [testenv:python313]
 basepython = /usr/local/bin/python3.13
-deps =
-    iniconfig==2.0.0
-    packaging==24.1
-    pip==24.2
-    pluggy==1.5.0
-    psutil==6.0.0
-    pyperf==2.7.0
-    pytest==8.3.3
-    PyYAML==6.0.2
-    sh==2.0.7
 
 [testenv:python314]
 basepython = /usr/local/bin/python3.14
-deps =
-    iniconfig==2.1.0
-    packaging==25.0
-    pip==25.2
-    pluggy==1.6.0
-    Pygments==2.19.2
-    pytest==8.4.1
-    PyYAML==6.0.2
-    sh==2.2.2
 
 [testenv:pypy]
 basepython = /usr/bin/pypy
-deps =
-    atomicwrites==1.4.1
-    attrs==20.3.0
-    backports.functools-lru-cache==1.6.6
-    cffi==1.12.0
-    configparser==4.0.2
-    contextlib2==0.6.0.post1
-    funcsigs==1.0.2
-    greenlet==0.4.13
-    importlib-metadata==2.1.3
-    more-itertools==5.0.0
-    pathlib2==2.3.7.post1
-    pluggy==0.13.1
-    py==1.11.0
-    pytest==4.5.0
-    PyYAML==5.1
-    readline==6.2.4.1
-    scandir==1.10.0
-    sh==1.12.14
-    six==1.16.0
-    typing==3.10.0.0
-    wcwidth==0.2.13
-    zipp==1.2.0
 
 [testenv:pypy3]
 basepython = /usr/bin/pypy3
-deps =
-    atomicwrites==1.4.1
-    attrs==20.3.0
-    cffi==1.12.0
-    greenlet==0.4.13
-    importlib-metadata==2.1.3
-    more-itertools==8.14.0
-    pathlib2==2.3.7.post1
-    pluggy==0.13.1
-    py==1.11.0
-    pytest==4.5.0
-    PyYAML==5.1
-    readline==6.2.4.1
-    sh==1.12.14
-    six==1.16.0
-    wcwidth==0.2.13
-    zipp==1.2.0