diff --git a/mezcla/unittest_wrapper.py b/mezcla/unittest_wrapper.py
index ee062556..9da8b2cb 100755
--- a/mezcla/unittest_wrapper.py
+++ b/mezcla/unittest_wrapper.py
@@ -184,7 +184,7 @@ def setUpClass(cls, filename=None, module=None):
         """Per-class initialization: make sure script_module set properly
         Note: Optional FILENAME is path for testing script and MODULE the imported object for tested script
         """
-        debug.trace(6, f"TestWrapper.setupClass({cls}, fn={filename}, mod={module})")
+        debug.trace(6, f"TestWrapper.setUpClass({cls}, fn={filename}, mod={module})")
         super().setUpClass()
         cls.class_setup = True
         debug.trace_object(7, cls, "TestWrapper class")
@@ -273,7 +273,7 @@ def get_module_file_path(test_filename):
     @classmethod
     def set_module_info(cls, test_filename, module_object=None):
         """Sets both script_module and script_path
-        Note: normally invoked in setupClass method
+        Note: normally invoked in setUpClass method
         Usage: cls.set_module_info(__file__, THE_MODULE)
         """
         debug.trace(7, f'set_module_info({test_filename}, {module_object})')
@@ -289,8 +289,8 @@ def setUp(self):
         # Note: By default, each test gets its own temp file.
         debug.trace(6, "TestWrapper.setUp()")
         if not self.class_setup:
-            debug.trace(5, "Warning: invoking setupClass in setup")
-            TestWrapper.setupClass(self.__class__)
+            debug.trace(5, "Warning: invoking setUpClass in setup")
+            TestWrapper.setUpClass(self.__class__)
         if not gh.ALLOW_SUBCOMMAND_TRACING:
             gh.disable_subcommand_tracing()
         # The temp file is an extension of temp-base file by default.
@@ -308,7 +308,7 @@ def setUp(self):
         return
 
     def run_script(self, options=None, data_file=None, log_file=None, trace_level=4,
-                   out_file=None, env_options=None, uses_stdin=None, post_options=None, background=None):
+                   out_file=None, env_options=None, uses_stdin=None, post_options=None, background=None, skip_stdin=None):
         """Runs the script over the DATA_FILE (optional), passing (positional)
         OPTIONS and optional setting ENV_OPTIONS. If OUT_FILE and LOG_FILE are
         not specified, they  are derived from self.temp_file. The optional POST_OPTIONS
@@ -316,7 +316,8 @@ def run_script(self, options=None, data_file=None, log_file=None, trace_level=4,
         Notes:
         - OPTIONS uses quotes around shell special characters used (e.g., '<', '>', '|')
         - issues warning if script invocation leads to error
-        - if USES_STDIN, requires explicit empty string for DATA_FILE to avoid use of - (n.b., as a precaution against hangups)"""
+        - if USES_STDIN, requires explicit empty string for DATA_FILE to avoid use of - (n.b., as a precaution against hangups)
+        - if """
         debug.trace_fmtd(trace_level + 1,
                          "TestWrapper.run_script(opts={opts!r}, data={df}, log={lf}, lvl={lvl}, out={of}, env={env}, stdin={stdin}, post={post}, back={back})",
                          opts=options, df=data_file, lf=log_file, lvl=trace_level, of=out_file,
@@ -327,12 +328,14 @@ def run_script(self, options=None, data_file=None, log_file=None, trace_level=4,
             env_options = ""
         if post_options is None:
             post_options = ""
+        if skip_stdin is None:
+            skip_stdin = False
 
         # Derive the full paths for data file and log, and then invoke script.
         # TODO: derive from temp base and data file name?;
         # TODO1: derive default for uses_stdin based on use of filename argment (e.g., from usage)
         uses_stdin_false = ((uses_stdin is not None) and not bool(uses_stdin))
-        data_path = ("" if uses_stdin_false else "-")
+        data_path = ("" if (skip_stdin or uses_stdin_false) else "-")
         if data_file is not None:
             data_path = (gh.resolve_path(data_file) if len(data_file) else data_file)
         if not log_file: