Use the 'append' action, instead of specifying tags as a comma-separated list of values.

python/subunit/_output.py

@@ -115,11 +115,10 @@ def parse_arguments(args=None, ParserClass=OptionParser):
     parser.add_option_group(file_commands)
 
     parser.add_option(
-        "--tags",
+        "--tag",
-        help="A comma-separated list of tags to associate with a test. This "
+        help="Specifies a tag. May be used multiple times",
-            "option may only be used with a status command.",
+        action="append",
-        action="callback",
+        dest="tags",
-        callback=set_tags_cb,
         default=[]
     )
 
@@ -139,7 +138,7 @@ def parse_arguments(args=None, ParserClass=OptionParser):
             except IOError as e:
                 parser.error("Cannot open %s (%s)" % (options.attach_file, e.strerror))
     if options.tags and not options.action:
-        parser.error("Cannot specify --tags without a status command")
+        parser.error("Cannot specify --tag without a status command")
     if not (options.attach_file or options.action):
         parser.error("Must specify either --attach-file or a status command")
 
@@ -156,12 +155,6 @@ def set_status_cb(option, opt_str, value, parser, status_name):
     parser.values.test_id = parser.rargs.pop(0)
 
 
-def set_tags_cb(option, opt_str, value, parser):
-    if not parser.rargs:
-        raise OptionValueError("Must specify at least one tag with --tags")
-    parser.values.tags = parser.rargs.pop(0).split(',')
-
-
 def generate_stream_results(args, output_writer):
     output_writer.startTestRun()
 
@@ -202,7 +195,6 @@ def generate_stream_results(args, output_writer):
             write_status = partial(write_status, test_id=args.test_id)
 
         if is_last_packet:
-            write_status = partial(write_status, eof=True)
             if args.action in _FINAL_ACTIONS:
                 write_status = partial(write_status, test_status=args.action)
 

python/subunit/tests/test_output_filter.py

@@ -103,7 +103,7 @@ class TestStatusArgParserTests(WithScenarios, TestCaseWithPatchedStderr):
 
     def test_all_commands_accept_tags_argument(self):
         args = safe_parse_arguments(
-            args=[self.option, 'foo', '--tags', "foo,bar,baz"]
+            args=[self.option, 'foo', '--tag', "foo", "--tag", "bar", "--tag", "baz"]
         )
         self.assertThat(args.tags, Equals(["foo", "bar", "baz"]))
 
@@ -180,18 +180,18 @@ class ArgParserTests(TestCaseWithPatchedStderr):
         )
 
     def test_cannot_specify_tags_without_status_command(self):
-        fn = lambda: safe_parse_arguments(['--tags', 'foo'])
+        fn = lambda: safe_parse_arguments(['--tag', 'foo'])
         self.assertThat(
             fn,
             raises(RuntimeError('subunit-output: error: Cannot specify '
-                '--tags without a status command\n'))
+                '--tag without a status command\n'))
         )
 
     def test_must_specify_tags_with_tags_options(self):
-        fn = lambda: safe_parse_arguments(['--fail', 'foo', '--tags'])
+        fn = lambda: safe_parse_arguments(['--fail', 'foo', '--tag'])
         self.assertThat(
             fn,
-            raises(RuntimeError('subunit-output: error: Must specify at least one tag with --tags\n'))
+            raises(RuntimeError('subunit-output: error: --tag option requires 1 argument\n'))
         )
 
 
@@ -255,7 +255,7 @@ class StatusStreamResultTests(WithScenarios, TestCase):
         )
 
     def test_all_commands_generate_tags(self):
-        result = get_result_for([self.option, self.test_id, '--tags', 'hello,world'])
+        result = get_result_for([self.option, self.test_id, '--tag', 'hello', '--tag', 'world'])
         self.assertThat(
             result._events[0],
             MatchesStatusCall(test_tags=set(['hello', 'world']))
@@ -387,8 +387,10 @@ class StatusStreamResultTests(WithScenarios, TestCase):
                 self.test_id,
                 '--attach-file',
                 f.name,
-                '--tags',
+                '--tag',
-                'foo,bar',
+                'foo',
+                '--tag',
+                'bar',
             ])
 
             self.assertThat(