- added get_function, to parse out the test function name out of a te…

…st node id;

- added missing tests;

src/pytest_cleanslate/reduce.py

@@ -138,10 +138,15 @@ def get_module(testid: str) -> str:
     return testid.split('::')[0]
 
 
-def is_module(testid: str) -> bool:
+def _is_module(testid: str) -> bool:
     return '::' not in testid
 
 
+def get_function(testid: str) -> str:
+    if '::' in testid:
+        return testid.split('::')[1].split('[')[0]
+
+
 def run_pytest(tests_path: Path, pytest_args=(), *,
                modules: T.List[Path] = None, tests: T.List[str] = None, trace: bool = False) -> dict:
     import tempfile
@@ -261,7 +266,7 @@ def reduce(*, tests_path: Path, results: Results = None, pytest_args: T.List[str
             'error': 'No tests failed',
         }
 
-    failed_is_module = is_module(failed_id)
+    failed_is_module = _is_module(failed_id)
     if failed_is_module:
         if trace: print()
         print(f"Module \"{failed_id}\"'s collection failed; trying it by itself...", flush=True)

tests/test_reduce.py

@@ -9,12 +9,19 @@
 
 import pytest_cleanslate.reduce as reduce
 
-from pytest_cleanslate.reduce import MODULE_LIST_ARG, TEST_LIST_ARG, RESULTS_ARG, Results
+from pytest_cleanslate.reduce import MODULE_LIST_ARG, TEST_LIST_ARG, RESULTS_ARG, Results, \
+            get_module, get_function
 
 
-def get_test_module(testid):
-    return testid.split('::')[0]
+def test_get_module():
+    assert 'test.py' == get_module('test.py')
+    assert 'test.py' == get_module('test.py::test_foo')
+    assert 'test.py' == get_module('test.py::test_foo[1]')
 
+def test_get_function():
+    assert None == get_function('test.py')
+    assert 'test_foo' == get_function('test.py::test_foo')
+    assert 'test_foo' == get_function('test.py::test_foo[1]')
 
 def test_run_pytest_collect_failure(tests_dir):
     test1 = seq2p(tests_dir, 1)
@@ -148,7 +155,7 @@ def test_reduce(tests_dir, pollute_in_collect, fail_collect, r):
     reduction = r(tests_path=tests_dir, trace=True)
 
     assert reduction['failed'] == failing
-    assert reduction['modules'] == [get_test_module(polluter)]
+    assert reduction['modules'] == [get_module(polluter)]
     assert reduction['tests'] == [] if pollute_in_collect else [polluter]
 
 
@@ -180,7 +187,7 @@ def test_nothing():
     reduction = r(tests_path=tests_dir, trace=True)
 
     assert reduction['failed'] == failing
-    assert reduction['modules'] == [get_test_module(polluter)]
+    assert reduction['modules'] == [get_module(polluter)]
     assert reduction['tests'] == []
 
 
@@ -196,7 +203,7 @@ def test_reduce_pytest_args(tests_dir, pollute_in_collect, fail_collect, r):
     reduction = r(tests_path=tests_dir, trace=True, pytest_args=['--noconftest'])
 
     assert reduction['failed'] == failing
-    assert reduction['modules'] == [get_test_module(polluter)]
+    assert reduction['modules'] == [get_module(polluter)]
     assert reduction['tests'] == [] if pollute_in_collect else [polluter]