initial version

mezcla/tests/test_unittest_wrapper.py

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+#! /usr/bin/env python
+#
+# Test(s) for ../unittest_wrapper.py
+#
+# Notes:
+# - For debugging the tested script, the ALLOW_SUBCOMMAND_TRACING environment
+#   option shows tracing output normally suppressed by unittest_wrapper.py.
+# - This can be run as follows:
+#   $ PYTHONPATH=".:$PYTHONPATH" python ./mezcla/tests/test_unittest_wrapper.py
+#
+
+"""Tests for unittest_wrapper module"""
+
+# Installed packages
+import pytest
+
+# Local packages
+## TODO (effing pytest): from mezcla.unittest_wrapper import TestWrapper, trap_exception, pytest_fixture_wrapper
+from mezcla.unittest_wrapper import TestWrapper
+from mezcla import debug
+from mezcla.my_regex import my_re
+
+# Note: Two references are used for the module to be tested:
+#    THE_MODULE:                  global module object
+#    TestTemplate.script_module:  path to file
+import mezcla.unittest_wrapper as THE_MODULE
+#
+# Note: sanity test for customization (TODO: remove if desired)
+if not my_re.search(__file__, r"\btemplate.py$"):
+    debug.assertion("mezcla.template" not in str(THE_MODULE))
+
+
+## TODO (use TestWrapper directly):
+
+## class TestIt(TestWrapper):
+##     """Class for command-line based testcase definition"""
+##     script_module = TestWrapper.get_testing_module_name(__file__, THE_MODULE)
+## 
+##     ## TODO: @pytest.mark.xfail                   # TODO: remove xfail
+##     ## TODO:
+##     ## @pytest_fixture_wrapper
+##     ## @trap_exception
+##     def test_do_assert(self, capsys):
+##         """Ensure do_assert identifies failing line"""
+##         debug.trace(4, f"TestIt.test_do_assert({capsys}); self={self}")
+##         captured_trace = ""
+##         try:
+##             captured_trace = capsys.readouterr()
+##             self.do_assert(False)
+##         except AssertionError:
+##             pass
+##         self.do_assert(my_re.search("do_assert", captured_trace))
+##         return
+
+class TestIt2:
+    """Class for API usage"""
+
+    ## TODO:
+    ## @pytest_fixture_wrapper
+    ## @trap_exception
+    def test_do_assert(self, capsys):
+        """Ensure do_assert identifies failing line"""
+        debug.trace(4, f"TestIt.test_do_assert({capsys}); self={self}")
+        #
+        class SubTestIt(TestWrapper):
+            """Embedded test suite"""
+            pass
+        #
+        sti = SubTestIt()        
+        captured_trace = ""
+        try:
+            sti.do_assert(False)
+        except AssertionError:
+            pass
+        captured_trace = capsys.readouterr().err
+        debug.trace_expr(5, captured_trace)
+        assert(my_re.search(r"\bdo_assert\b", captured_trace))
+        return
+
+#------------------------------------------------------------------------
+
+if __name__ == '__main__':
+    debug.trace_current_context()
+    pytest.main([__file__])