unittest-discover: Print results when no tests are found/run.

python-stdlib/unittest-discover/manifest.py

@@ -1,4 +1,4 @@
-metadata(version="0.1.1")
+metadata(version="0.1.2")
 
 require("argparse")
 require("fnmatch")

python-stdlib/unittest-discover/unittest/__main__.py

@@ -111,7 +111,6 @@ def _dirname_filename_no_ext(path):
 
 
 def discover_main():
-    failures = 0
     runner = TestRunner()
 
     if len(sys.argv) == 1 or (
@@ -121,22 +120,27 @@ def discover_main():
     ):
         # No args, or `python -m unittest discover ...`.
         result = _discover(runner)
-        failures += result.failuresNum or result.errorsNum
     else:
+        result = TestResult()
         for test_spec in sys.argv[1:]:
             try:
                 os.stat(test_spec)
                 # File exists, strip extension and import with its parent directory in sys.path.
                 dirname, module_name = _dirname_filename_no_ext(test_spec)
-                result = _run_test_module(runner, module_name, dirname)
+                res = _run_test_module(runner, module_name, dirname)
             except OSError:
                 # Not a file, treat as named module to import.
-                result = _run_test_module(runner, test_spec)
+                res = _run_test_module(runner, test_spec)
 
-            failures += result.failuresNum or result.errorsNum
+            result += res
+
+    if not result.testsRun:
+        # If tests are run their results are already printed.
+        # Ensure an appropriate output is printed if no tests are found.
+        runner.run(TestSuite())
 
     # Terminate with non zero return code in case of failures.
-    sys.exit(failures)
+    sys.exit(result.failuresNum + result.errorsNum)
 
 
 discover_main()

python-stdlib/unittest/manifest.py

@@ -1,3 +1,3 @@
-metadata(version="0.10.2")
+metadata(version="0.10.3")
 
 package("unittest")

python-stdlib/unittest/unittest/__init__.py

@@ -300,9 +300,10 @@ def wasSuccessful(self):
         return self.errorsNum == 0 and self.failuresNum == 0
 
     def printErrors(self):
-        print()
-        self.printErrorList(self.errors)
-        self.printErrorList(self.failures)
+        if self.errors or self.failures:
+            print()
+            self.printErrorList(self.errors)
+            self.printErrorList(self.failures)
 
     def printErrorList(self, lst):
         sep = "----------------------------------------------------------------------"