.ci/get_tests.py: Add dynamic test skip list

Custom rules in tox.ini are migrated into get_tests.py so
that they can be dynamically collated together.

Disable phpmd test test_cleancode_violation, as it is currently
failing due to a minor text change in the error emitted by the
linter.

Related to coala#2943
Related to coala#1476

.ci/get_tests.py

@@ -123,14 +123,34 @@ def get_tests(bears):
     return tests
 
 
+def get_pytest_deselected_tests(args, tests):
+    not_list = []
+    if 'tests/documentation/DocGrammarBearTest.py' in tests:
+        if 'win' in args:
+            not_list.append('test_language_french')
+
+    if 'tests/python/YapfBearTest.py' in tests:
+        if 'py34' in args:
+            not_list.append('test_valid_async')
+
+    if 'tests/php/PHPMessDetectorBearTest.py' in tests:
+        not_list.append('test_cleancode_violation')
+
+    return not_list
+
+
 def main():
     args_orig = sys.argv[1:]
     metadata = get_metadata()
 
     include_disabled = False
+    show_deselected = False
     if args_orig[0] == '--disabled':
         include_disabled = True
         args_orig = args_orig[1:]
+    elif args_orig[0] == '--deselected':
+        show_deselected = True
+        args_orig = args_orig[1:]
 
     args = []
     for arg in args_orig:
@@ -149,7 +169,14 @@ def main():
 
     bears = get_bears(metadata, args, include_disabled)
     tests = get_tests(bears)
-    print(' '.join(sorted(tests)))
+    if show_deselected:
+        not_list = get_pytest_deselected_tests(args, tests)
+        if len(not_list) > 1:
+            print('-k "not ({})"'.format(' or '.join(not_list)))
+        elif len(not_list) == 1:
+            print('-k "not {}"'.format(not_list[0]))
+    else:
+        print(' '.join(sorted(tests)))
 
 
 if __name__ == '__main__':

tox.ini

@@ -97,18 +97,17 @@ deps =
 setenv =
   LINTR_COMMENT_BOT=false
   ENVNAMEBEARS=`python .ci/get_tests.py {envname}`
+  PYTEST_DESELECT_ARG=`python .ci/get_tests.py --deselected {envname}`
   adhoc: ADHOCBEARS=`python .ci/get_tests.py {env:BEAR_LIST}`
   disabled: DISABLEDBEARS=`python .ci/get_tests.py --disabled {env:BEAR_LIST}`
   SELECTED={env:ENVNAMEBEARS:} {env:ADHOCBEARS:} {env:DISABLEDBEARS:}
   noskip: PYTEST_ARGS=--error-for-skips
-  py34-noskip: PYTEST_ARGS=--error-for-skips -k 'not test_valid_async'
-  win-noskip: PYTEST_ARGS=--error-for-skips -k 'not test_language_french and not test_valid_async'
   collectonly,list: PYTEST_ARGS=--collect-only
   codecov: CODECOV_FLAGS=`python .ci/get_codecov_tags.py {envname}`
 commands =
   check,list,all: python .ci/get_bears.py --missing {env:SELECTED}
   !py34,!apt_get: python .ci/generate_coverage_thresholds.py {posargs:{env:SELECTED}}
   py34,apt_get: python .ci/generate_coverage_thresholds.py none
-  !list: pytest {env:PYTEST_ARGS:} --cov --cov-fail-under=0 --continue-on-collection-errors --cov-report term-missing:skip-covered --deselect=requirements.txt {posargs:{env:SELECTED}}
+  !list: pytest {env:PYTEST_ARGS:} --cov --cov-fail-under=0 --continue-on-collection-errors --cov-report term-missing:skip-covered --deselect=requirements.txt {posargs:{env:SELECTED}} {env:PYTEST_DESELECT_ARG:}
 commands_post =
   codecov: codecov --name={envname} --flags={env:CODECOV_FLAGS}