Add facilities to run self-tests from a command.

3 files changed, 28 insertions, 3 deletions

diff --git a/hazwaz/command.py b/hazwaz/command.py
index 185070f..1faf0fa 100644
--- a/hazwaz/command.py
+++ b/hazwaz/command.py
@@ -1,5 +1,6 @@
 import argparse
 import logging
+import typing
 
 logger = logging.getLogger(__name__)
 
@@ -128,7 +129,7 @@ class Command:
     the :py:attr:`MainCommand.subcommands`.
     """
 
-    name = None
+    name: typing.Optional[str] = None
     """
     The name used to call this subcommand from the command line.
 
diff --git a/hazwaz/unittest.py b/hazwaz/unittest.py
index 96689d5..0092899 100644
--- a/hazwaz/unittest.py
+++ b/hazwaz/unittest.py
@@ -4,6 +4,8 @@ import sys
 import typing
 import unittest
 
+from .command import Command
+
 
 class HazwazTestCase(unittest.TestCase):
     def run_with_argv(
@@ -30,3 +32,26 @@ class HazwazTestCase(unittest.TestCase):
                 cmd.run()
         sys.argv = old_argv
         return stream
+
+
+class TestCommand(Command):
+    """
+    Run unittests.
+    """
+    name = "test"
+
+    def __init__(self, test_cases: typing.Iterable[unittest.TestCase]):
+        self.test_cases = test_cases
+        super().__init__()
+
+    def main(self):
+        suite = unittest.TestSuite()
+        for test_case in self.test_cases:
+            suite.addTests(
+                unittest.TestLoader().loadTestsFromTestCase(test_case)
+            )
+        unittest.TextTestRunner(verbosity=1).run(suite)
+
+
+def main():
+    unittest.main()
diff --git a/tests/test_command.py b/tests/test_command.py
index 96b36de..1d1402c 100644
--- a/tests/test_command.py
+++ b/tests/test_command.py
@@ -1,5 +1,4 @@
 import logging
-import unittest
 
 import hazwaz
 import hazwaz.unittest
@@ -190,4 +189,4 @@ class testCommand(hazwaz.unittest.HazwazTestCase):
 
 
 if __name__ == '__main__':
-    unittest.main()
+    hazwaz.unittest.main()