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Remove `skip-string-normalization` in Python formatter config
[babeltrace.git] / tests / bindings / python / bt2 / test_port.py
diff --git a/tests/bindings/python/bt2/test_port.py b/tests/bindings/python/bt2/test_port.py
index 3ba46cdd1772cc4ae3d72b206c758d62ed89256d..17945cb0a5119a3cd01bec6a96cc86a978ad4b57 100644 (file)
--- a/tests/bindings/python/bt2/test_port.py
+++ b/tests/bindings/python/bt2/test_port.py
@@ -1,20 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2019 EfficiOS Inc.
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; only version 2
-# of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
-#
 
 import unittest
 import bt2
@@ -27,7 +14,7 @@ class PortTestCase(unittest.TestCase):
         graph = bt2.Graph()
 
         if name is None:
-            name = 'comp'
+            name = "comp"
 
         return graph.add_component(comp_cls, name)
 
@@ -36,41 +23,104 @@ class PortTestCase(unittest.TestCase):
             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                port = comp_self._add_output_port('out')
-                self.assertEqual(port.name, 'out')
+                port = comp_self._add_output_port("out")
+                self.assertEqual(port.name, "out")
 
         comp = self._create_comp(MySource)
         self.assertEqual(len(comp.output_ports), 1)
-        self.assertIs(type(comp.output_ports['out']), bt2_port._OutputPortConst)
+        self.assertIs(type(comp.output_ports["out"]), bt2_port._OutputPortConst)
+
+    # Test adding output port with duplicate name to source.
+    def test_src_add_output_port_dup_name_raises(self):
+        class MySource(
+            bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
+        ):
+            def __init__(comp_self, config, params, obj):
+                comp_self._add_output_port("out")
+
+                with self.assertRaisesRegex(
+                    ValueError,
+                    "source component `comp` already contains an output port named `out`",
+                ):
+                    comp_self._add_output_port("out")
+
+                nonlocal seen
+                seen = True
+
+        seen = False
+        self._create_comp(MySource)
+        self.assertTrue(seen)
 
     def test_flt_add_output_port(self):
         class MyFilter(
             bt2._UserFilterComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                port = comp_self._add_output_port('out')
-                self.assertEqual(port.name, 'out')
+                port = comp_self._add_output_port("out")
+                self.assertEqual(port.name, "out")
 
         comp = self._create_comp(MyFilter)
         self.assertEqual(len(comp.output_ports), 1)
 
+    # Test adding output port with duplicate name to filter.
+    def test_flt_add_output_port_dup_name_raises(self):
+        class MyFilter(
+            bt2._UserFilterComponent, message_iterator_class=bt2._UserMessageIterator
+        ):
+            def __init__(comp_self, config, params, obj):
+                comp_self._add_output_port("out")
+
+                with self.assertRaisesRegex(
+                    ValueError,
+                    "filter component `comp` already contains an output port named `out`",
+                ):
+                    comp_self._add_output_port("out")
+
+                nonlocal seen
+                seen = True
+
+        seen = False
+        self._create_comp(MyFilter)
+        self.assertTrue(seen)
+
     def test_flt_add_input_port(self):
         class MyFilter(
             bt2._UserFilterComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                port = comp_self._add_input_port('in')
-                self.assertEqual(port.name, 'in')
+                port = comp_self._add_input_port("in")
+                self.assertEqual(port.name, "in")
 
         comp = self._create_comp(MyFilter)
         self.assertEqual(len(comp.input_ports), 1)
-        self.assertIs(type(comp.input_ports['in']), bt2_port._InputPortConst)
+        self.assertIs(type(comp.input_ports["in"]), bt2_port._InputPortConst)
+
+    # Test adding input port with duplicate name to filter.
+    def test_flt_add_input_port_dup_name_raises(self):
+        class MyFilter(
+            bt2._UserFilterComponent, message_iterator_class=bt2._UserMessageIterator
+        ):
+            def __init__(comp_self, config, params, obj):
+                comp_self._add_input_port("in")
+
+                with self.assertRaisesRegex(
+                    ValueError,
+                    "filter component `comp` already contains an input port named `in`",
+                ):
+                    comp_self._add_input_port("in")
+
+                nonlocal seen
+                seen = True
+
+        seen = False
+        self._create_comp(MyFilter)
+        self.assertTrue(seen)
 
     def test_sink_add_input_port(self):
         class MySink(bt2._UserSinkComponent):
             def __init__(comp_self, config, params, obj):
-                port = comp_self._add_input_port('in')
-                self.assertEqual(port.name, 'in')
+                port = comp_self._add_input_port("in")
+                self.assertEqual(port.name, "in")
 
             def _user_consume(self):
                 pass
@@ -78,17 +128,39 @@ class PortTestCase(unittest.TestCase):
         comp = self._create_comp(MySink)
         self.assertEqual(len(comp.input_ports), 1)
 
+    # Test adding input port with duplicate name to sink.
+    def test_sink_add_input_port_dup_name_raises(self):
+        class MySink(bt2._UserSinkComponent):
+            def __init__(comp_self, config, params, obj):
+                comp_self._add_input_port("in")
+
+                with self.assertRaisesRegex(
+                    ValueError,
+                    "sink component `comp` already contains an input port named `in`",
+                ):
+                    comp_self._add_input_port("in")
+
+                nonlocal seen
+                seen = True
+
+            def _user_consume(self):
+                pass
+
+        seen = False
+        self._create_comp(MySink)
+        self.assertTrue(seen)
+
     def test_user_src_output_ports_getitem(self):
         class MySource(
             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                port1 = comp_self._add_output_port('clear')
-                port2 = comp_self._add_output_port('print')
-                port3 = comp_self._add_output_port('insert')
-                self.assertEqual(port3.addr, comp_self._output_ports['insert'].addr)
-                self.assertEqual(port2.addr, comp_self._output_ports['print'].addr)
-                self.assertEqual(port1.addr, comp_self._output_ports['clear'].addr)
+                port1 = comp_self._add_output_port("clear")
+                port2 = comp_self._add_output_port("print")
+                port3 = comp_self._add_output_port("insert")
+                self.assertEqual(port3.addr, comp_self._output_ports["insert"].addr)
+                self.assertEqual(port2.addr, comp_self._output_ports["print"].addr)
+                self.assertEqual(port1.addr, comp_self._output_ports["clear"].addr)
 
         self._create_comp(MySource)
 
@@ -97,12 +169,12 @@ class PortTestCase(unittest.TestCase):
             bt2._UserFilterComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                port1 = comp_self._add_output_port('clear')
-                port2 = comp_self._add_output_port('print')
-                port3 = comp_self._add_output_port('insert')
-                self.assertEqual(port3.addr, comp_self._output_ports['insert'].addr)
-                self.assertEqual(port2.addr, comp_self._output_ports['print'].addr)
-                self.assertEqual(port1.addr, comp_self._output_ports['clear'].addr)
+                port1 = comp_self._add_output_port("clear")
+                port2 = comp_self._add_output_port("print")
+                port3 = comp_self._add_output_port("insert")
+                self.assertEqual(port3.addr, comp_self._output_ports["insert"].addr)
+                self.assertEqual(port2.addr, comp_self._output_ports["print"].addr)
+                self.assertEqual(port1.addr, comp_self._output_ports["clear"].addr)
 
         self._create_comp(MyFilter)
 
@@ -111,24 +183,24 @@ class PortTestCase(unittest.TestCase):
             bt2._UserFilterComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                port1 = comp_self._add_input_port('clear')
-                port2 = comp_self._add_input_port('print')
-                port3 = comp_self._add_input_port('insert')
-                self.assertEqual(port3.addr, comp_self._input_ports['insert'].addr)
-                self.assertEqual(port2.addr, comp_self._input_ports['print'].addr)
-                self.assertEqual(port1.addr, comp_self._input_ports['clear'].addr)
+                port1 = comp_self._add_input_port("clear")
+                port2 = comp_self._add_input_port("print")
+                port3 = comp_self._add_input_port("insert")
+                self.assertEqual(port3.addr, comp_self._input_ports["insert"].addr)
+                self.assertEqual(port2.addr, comp_self._input_ports["print"].addr)
+                self.assertEqual(port1.addr, comp_self._input_ports["clear"].addr)
 
         self._create_comp(MyFilter)
 
     def test_user_sink_input_ports_getitem(self):
         class MySink(bt2._UserSinkComponent):
             def __init__(comp_self, config, params, obj):
-                port1 = comp_self._add_input_port('clear')
-                port2 = comp_self._add_input_port('print')
-                port3 = comp_self._add_input_port('insert')
-                self.assertEqual(port3.addr, comp_self._input_ports['insert'].addr)
-                self.assertEqual(port2.addr, comp_self._input_ports['print'].addr)
-                self.assertEqual(port1.addr, comp_self._input_ports['clear'].addr)
+                port1 = comp_self._add_input_port("clear")
+                port2 = comp_self._add_input_port("print")
+                port3 = comp_self._add_input_port("insert")
+                self.assertEqual(port3.addr, comp_self._input_ports["insert"].addr)
+                self.assertEqual(port2.addr, comp_self._input_ports["print"].addr)
+                self.assertEqual(port1.addr, comp_self._input_ports["clear"].addr)
 
             def _user_consume(self):
                 pass
@@ -140,12 +212,12 @@ class PortTestCase(unittest.TestCase):
             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_output_port('clear')
-                comp_self._add_output_port('print')
-                comp_self._add_output_port('insert')
+                comp_self._add_output_port("clear")
+                comp_self._add_output_port("print")
+                comp_self._add_output_port("insert")
 
                 with self.assertRaises(KeyError):
-                    comp_self._output_ports['hello']
+                    comp_self._output_ports["hello"]
 
         self._create_comp(MySource)
 
@@ -154,12 +226,12 @@ class PortTestCase(unittest.TestCase):
             bt2._UserFilterComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_output_port('clear')
-                comp_self._add_output_port('print')
-                comp_self._add_output_port('insert')
+                comp_self._add_output_port("clear")
+                comp_self._add_output_port("print")
+                comp_self._add_output_port("insert")
 
                 with self.assertRaises(KeyError):
-                    comp_self._output_ports['hello']
+                    comp_self._output_ports["hello"]
 
         self._create_comp(MyFilter)
 
@@ -168,24 +240,24 @@ class PortTestCase(unittest.TestCase):
             bt2._UserFilterComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_input_port('clear')
-                comp_self._add_input_port('print')
-                comp_self._add_input_port('insert')
+                comp_self._add_input_port("clear")
+                comp_self._add_input_port("print")
+                comp_self._add_input_port("insert")
 
                 with self.assertRaises(KeyError):
-                    comp_self._input_ports['hello']
+                    comp_self._input_ports["hello"]
 
         self._create_comp(MyFilter)
 
     def test_user_sink_input_ports_getitem_invalid_key(self):
         class MySink(bt2._UserSinkComponent):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_input_port('clear')
-                comp_self._add_input_port('print')
-                comp_self._add_input_port('insert')
+                comp_self._add_input_port("clear")
+                comp_self._add_input_port("print")
+                comp_self._add_input_port("insert")
 
                 with self.assertRaises(KeyError):
-                    comp_self._input_ports['hello']
+                    comp_self._input_ports["hello"]
 
             def _user_consume(self):
                 pass
@@ -197,9 +269,9 @@ class PortTestCase(unittest.TestCase):
             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_output_port('clear')
-                comp_self._add_output_port('print')
-                comp_self._add_output_port('insert')
+                comp_self._add_output_port("clear")
+                comp_self._add_output_port("print")
+                comp_self._add_output_port("insert")
                 self.assertEqual(len(comp_self._output_ports), 3)
 
         self._create_comp(MySource)
@@ -209,9 +281,9 @@ class PortTestCase(unittest.TestCase):
             bt2._UserFilterComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_output_port('clear')
-                comp_self._add_output_port('print')
-                comp_self._add_output_port('insert')
+                comp_self._add_output_port("clear")
+                comp_self._add_output_port("print")
+                comp_self._add_output_port("insert")
                 self.assertEqual(len(comp_self._output_ports), 3)
 
         self._create_comp(MyFilter)
@@ -221,9 +293,9 @@ class PortTestCase(unittest.TestCase):
             bt2._UserFilterComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_input_port('clear')
-                comp_self._add_input_port('print')
-                comp_self._add_input_port('insert')
+                comp_self._add_input_port("clear")
+                comp_self._add_input_port("print")
+                comp_self._add_input_port("insert")
                 self.assertEqual(len(comp_self._input_ports), 3)
 
         self._create_comp(MyFilter)
@@ -231,9 +303,9 @@ class PortTestCase(unittest.TestCase):
     def test_user_sink_input_ports_len(self):
         class MySink(bt2._UserSinkComponent):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_input_port('clear')
-                comp_self._add_input_port('print')
-                comp_self._add_input_port('insert')
+                comp_self._add_input_port("clear")
+                comp_self._add_input_port("print")
+                comp_self._add_input_port("insert")
                 self.assertEqual(len(comp_self._input_ports), 3)
 
             def _user_consume(self):
@@ -246,19 +318,19 @@ class PortTestCase(unittest.TestCase):
             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                port1 = comp_self._add_output_port('clear')
-                port2 = comp_self._add_output_port('print')
-                port3 = comp_self._add_output_port('insert')
+                port1 = comp_self._add_output_port("clear")
+                port2 = comp_self._add_output_port("print")
+                port3 = comp_self._add_output_port("insert")
                 ports = []
 
                 for port_name, port in comp_self._output_ports.items():
                     ports.append((port_name, port))
 
-                self.assertEqual(ports[0][0], 'clear')
+                self.assertEqual(ports[0][0], "clear")
                 self.assertEqual(ports[0][1].addr, port1.addr)
-                self.assertEqual(ports[1][0], 'print')
+                self.assertEqual(ports[1][0], "print")
                 self.assertEqual(ports[1][1].addr, port2.addr)
-                self.assertEqual(ports[2][0], 'insert')
+                self.assertEqual(ports[2][0], "insert")
                 self.assertEqual(ports[2][1].addr, port3.addr)
 
         self._create_comp(MySource)
@@ -268,19 +340,19 @@ class PortTestCase(unittest.TestCase):
             bt2._UserFilterComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                port1 = comp_self._add_output_port('clear')
-                port2 = comp_self._add_output_port('print')
-                port3 = comp_self._add_output_port('insert')
+                port1 = comp_self._add_output_port("clear")
+                port2 = comp_self._add_output_port("print")
+                port3 = comp_self._add_output_port("insert")
                 ports = []
 
                 for port_name, port in comp_self._output_ports.items():
                     ports.append((port_name, port))
 
-                self.assertEqual(ports[0][0], 'clear')
+                self.assertEqual(ports[0][0], "clear")
                 self.assertEqual(ports[0][1].addr, port1.addr)
-                self.assertEqual(ports[1][0], 'print')
+                self.assertEqual(ports[1][0], "print")
                 self.assertEqual(ports[1][1].addr, port2.addr)
-                self.assertEqual(ports[2][0], 'insert')
+                self.assertEqual(ports[2][0], "insert")
                 self.assertEqual(ports[2][1].addr, port3.addr)
 
         self._create_comp(MyFilter)
@@ -290,19 +362,19 @@ class PortTestCase(unittest.TestCase):
             bt2._UserFilterComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                port1 = comp_self._add_input_port('clear')
-                port2 = comp_self._add_input_port('print')
-                port3 = comp_self._add_input_port('insert')
+                port1 = comp_self._add_input_port("clear")
+                port2 = comp_self._add_input_port("print")
+                port3 = comp_self._add_input_port("insert")
                 ports = []
 
                 for port_name, port in comp_self._input_ports.items():
                     ports.append((port_name, port))
 
-                self.assertEqual(ports[0][0], 'clear')
+                self.assertEqual(ports[0][0], "clear")
                 self.assertEqual(ports[0][1].addr, port1.addr)
-                self.assertEqual(ports[1][0], 'print')
+                self.assertEqual(ports[1][0], "print")
                 self.assertEqual(ports[1][1].addr, port2.addr)
-                self.assertEqual(ports[2][0], 'insert')
+                self.assertEqual(ports[2][0], "insert")
                 self.assertEqual(ports[2][1].addr, port3.addr)
 
         self._create_comp(MyFilter)
@@ -310,19 +382,19 @@ class PortTestCase(unittest.TestCase):
     def test_user_sink_input_ports_iter(self):
         class MySink(bt2._UserSinkComponent):
             def __init__(comp_self, config, params, obj):
-                port1 = comp_self._add_input_port('clear')
-                port2 = comp_self._add_input_port('print')
-                port3 = comp_self._add_input_port('insert')
+                port1 = comp_self._add_input_port("clear")
+                port2 = comp_self._add_input_port("print")
+                port3 = comp_self._add_input_port("insert")
                 ports = []
 
                 for port_name, port in comp_self._input_ports.items():
                     ports.append((port_name, port))
 
-                self.assertEqual(ports[0][0], 'clear')
+                self.assertEqual(ports[0][0], "clear")
                 self.assertEqual(ports[0][1].addr, port1.addr)
-                self.assertEqual(ports[1][0], 'print')
+                self.assertEqual(ports[1][0], "print")
                 self.assertEqual(ports[1][1].addr, port2.addr)
-                self.assertEqual(ports[2][0], 'insert')
+                self.assertEqual(ports[2][0], "insert")
                 self.assertEqual(ports[2][1].addr, port3.addr)
 
             def _user_consume(self):
@@ -340,14 +412,14 @@ class PortTestCase(unittest.TestCase):
         ):
             def __init__(comp_self, config, params, obj):
                 nonlocal port1, port2, port3
-                port1 = comp_self._add_output_port('clear')
-                port2 = comp_self._add_output_port('print')
-                port3 = comp_self._add_output_port('insert')
+                port1 = comp_self._add_output_port("clear")
+                port2 = comp_self._add_output_port("print")
+                port3 = comp_self._add_output_port("insert")
 
         comp = self._create_comp(MySource)
-        self.assertEqual(port3.addr, comp.output_ports['insert'].addr)
-        self.assertEqual(port2.addr, comp.output_ports['print'].addr)
-        self.assertEqual(port1.addr, comp.output_ports['clear'].addr)
+        self.assertEqual(port3.addr, comp.output_ports["insert"].addr)
+        self.assertEqual(port2.addr, comp.output_ports["print"].addr)
+        self.assertEqual(port1.addr, comp.output_ports["clear"].addr)
         del port1
         del port2
         del port3
@@ -362,14 +434,14 @@ class PortTestCase(unittest.TestCase):
         ):
             def __init__(comp_self, config, params, obj):
                 nonlocal port1, port2, port3
-                port1 = comp_self._add_output_port('clear')
-                port2 = comp_self._add_output_port('print')
-                port3 = comp_self._add_output_port('insert')
+                port1 = comp_self._add_output_port("clear")
+                port2 = comp_self._add_output_port("print")
+                port3 = comp_self._add_output_port("insert")
 
         comp = self._create_comp(MyFilter)
-        self.assertEqual(port3.addr, comp.output_ports['insert'].addr)
-        self.assertEqual(port2.addr, comp.output_ports['print'].addr)
-        self.assertEqual(port1.addr, comp.output_ports['clear'].addr)
+        self.assertEqual(port3.addr, comp.output_ports["insert"].addr)
+        self.assertEqual(port2.addr, comp.output_ports["print"].addr)
+        self.assertEqual(port1.addr, comp.output_ports["clear"].addr)
         del port1
         del port2
         del port3
@@ -384,14 +456,14 @@ class PortTestCase(unittest.TestCase):
         ):
             def __init__(comp_self, config, params, obj):
                 nonlocal port1, port2, port3
-                port1 = comp_self._add_input_port('clear')
-                port2 = comp_self._add_input_port('print')
-                port3 = comp_self._add_input_port('insert')
+                port1 = comp_self._add_input_port("clear")
+                port2 = comp_self._add_input_port("print")
+                port3 = comp_self._add_input_port("insert")
 
         comp = self._create_comp(MyFilter)
-        self.assertEqual(port3.addr, comp.input_ports['insert'].addr)
-        self.assertEqual(port2.addr, comp.input_ports['print'].addr)
-        self.assertEqual(port1.addr, comp.input_ports['clear'].addr)
+        self.assertEqual(port3.addr, comp.input_ports["insert"].addr)
+        self.assertEqual(port2.addr, comp.input_ports["print"].addr)
+        self.assertEqual(port1.addr, comp.input_ports["clear"].addr)
         del port1
         del port2
         del port3
@@ -404,17 +476,17 @@ class PortTestCase(unittest.TestCase):
         class MySink(bt2._UserSinkComponent):
             def __init__(comp_self, config, params, obj):
                 nonlocal port1, port2, port3
-                port1 = comp_self._add_input_port('clear')
-                port2 = comp_self._add_input_port('print')
-                port3 = comp_self._add_input_port('insert')
+                port1 = comp_self._add_input_port("clear")
+                port2 = comp_self._add_input_port("print")
+                port3 = comp_self._add_input_port("insert")
 
             def _user_consume(self):
                 pass
 
         comp = self._create_comp(MySink)
-        self.assertEqual(port3.addr, comp.input_ports['insert'].addr)
-        self.assertEqual(port2.addr, comp.input_ports['print'].addr)
-        self.assertEqual(port1.addr, comp.input_ports['clear'].addr)
+        self.assertEqual(port3.addr, comp.input_ports["insert"].addr)
+        self.assertEqual(port2.addr, comp.input_ports["print"].addr)
+        self.assertEqual(port1.addr, comp.input_ports["clear"].addr)
         del port1
         del port2
         del port3
@@ -424,52 +496,52 @@ class PortTestCase(unittest.TestCase):
             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_output_port('clear')
-                comp_self._add_output_port('print')
-                comp_self._add_output_port('insert')
+                comp_self._add_output_port("clear")
+                comp_self._add_output_port("print")
+                comp_self._add_output_port("insert")
 
         comp = self._create_comp(MySource)
 
         with self.assertRaises(KeyError):
-            comp.output_ports['hello']
+            comp.output_ports["hello"]
 
     def test_gen_flt_output_ports_getitem_invalid_key(self):
         class MyFilter(
             bt2._UserFilterComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_output_port('clear')
-                comp_self._add_output_port('print')
-                comp_self._add_output_port('insert')
+                comp_self._add_output_port("clear")
+                comp_self._add_output_port("print")
+                comp_self._add_output_port("insert")
 
         comp = self._create_comp(MyFilter)
 
         with self.assertRaises(KeyError):
-            comp.output_ports['hello']
+            comp.output_ports["hello"]
 
     def test_gen_flt_input_ports_getitem_invalid_key(self):
         class MyFilter(
             bt2._UserFilterComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_input_port('clear')
-                comp_self._add_input_port('print')
-                comp_self._add_input_port('insert')
+                comp_self._add_input_port("clear")
+                comp_self._add_input_port("print")
+                comp_self._add_input_port("insert")
 
         comp = self._create_comp(MyFilter)
 
         with self.assertRaises(KeyError):
-            comp.input_ports['hello']
+            comp.input_ports["hello"]
 
     def test_gen_sink_input_ports_getitem_invalid_key(self):
         class MySink(bt2._UserSinkComponent):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_input_port('clear')
-                comp_self._add_input_port('print')
-                comp_self._add_input_port('insert')
+                comp_self._add_input_port("clear")
+                comp_self._add_input_port("print")
+                comp_self._add_input_port("insert")
 
                 with self.assertRaises(KeyError):
-                    comp_self._input_ports['hello']
+                    comp_self._input_ports["hello"]
 
             def _user_consume(self):
                 pass
@@ -477,16 +549,16 @@ class PortTestCase(unittest.TestCase):
         comp = self._create_comp(MySink)
 
         with self.assertRaises(KeyError):
-            comp.input_ports['hello']
+            comp.input_ports["hello"]
 
     def test_gen_src_output_ports_len(self):
         class MySource(
             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_output_port('clear')
-                comp_self._add_output_port('print')
-                comp_self._add_output_port('insert')
+                comp_self._add_output_port("clear")
+                comp_self._add_output_port("print")
+                comp_self._add_output_port("insert")
 
         comp = self._create_comp(MySource)
         self.assertEqual(len(comp.output_ports), 3)
@@ -496,9 +568,9 @@ class PortTestCase(unittest.TestCase):
             bt2._UserFilterComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_output_port('clear')
-                comp_self._add_output_port('print')
-                comp_self._add_output_port('insert')
+                comp_self._add_output_port("clear")
+                comp_self._add_output_port("print")
+                comp_self._add_output_port("insert")
 
         comp = self._create_comp(MyFilter)
         self.assertEqual(len(comp.output_ports), 3)
@@ -508,9 +580,9 @@ class PortTestCase(unittest.TestCase):
             bt2._UserFilterComponent, message_iterator_class=bt2._UserMessageIterator
         ):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_input_port('clear')
-                comp_self._add_input_port('print')
-                comp_self._add_input_port('insert')
+                comp_self._add_input_port("clear")
+                comp_self._add_input_port("print")
+                comp_self._add_input_port("insert")
 
         comp = self._create_comp(MyFilter)
         self.assertEqual(len(comp.input_ports), 3)
@@ -518,9 +590,9 @@ class PortTestCase(unittest.TestCase):
     def test_gen_sink_input_ports_len(self):
         class MySink(bt2._UserSinkComponent):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_input_port('clear')
-                comp_self._add_input_port('print')
-                comp_self._add_input_port('insert')
+                comp_self._add_input_port("clear")
+                comp_self._add_input_port("print")
+                comp_self._add_input_port("insert")
 
             def _user_consume(self):
                 pass
@@ -538,9 +610,9 @@ class PortTestCase(unittest.TestCase):
         ):
             def __init__(comp_self, config, params, obj):
                 nonlocal port1, port2, port3
-                port1 = comp_self._add_output_port('clear')
-                port2 = comp_self._add_output_port('print')
-                port3 = comp_self._add_output_port('insert')
+                port1 = comp_self._add_output_port("clear")
+                port2 = comp_self._add_output_port("print")
+                port3 = comp_self._add_output_port("insert")
 
         comp = self._create_comp(MySource)
         ports = []
@@ -548,11 +620,11 @@ class PortTestCase(unittest.TestCase):
         for port_name, port in comp.output_ports.items():
             ports.append((port_name, port))
 
-        self.assertEqual(ports[0][0], 'clear')
+        self.assertEqual(ports[0][0], "clear")
         self.assertEqual(ports[0][1].addr, port1.addr)
-        self.assertEqual(ports[1][0], 'print')
+        self.assertEqual(ports[1][0], "print")
         self.assertEqual(ports[1][1].addr, port2.addr)
-        self.assertEqual(ports[2][0], 'insert')
+        self.assertEqual(ports[2][0], "insert")
         self.assertEqual(ports[2][1].addr, port3.addr)
         del port1
         del port2
@@ -568,9 +640,9 @@ class PortTestCase(unittest.TestCase):
         ):
             def __init__(comp_self, config, params, obj):
                 nonlocal port1, port2, port3
-                port1 = comp_self._add_output_port('clear')
-                port2 = comp_self._add_output_port('print')
-                port3 = comp_self._add_output_port('insert')
+                port1 = comp_self._add_output_port("clear")
+                port2 = comp_self._add_output_port("print")
+                port3 = comp_self._add_output_port("insert")
 
         comp = self._create_comp(MyFilter)
         ports = []
@@ -578,11 +650,11 @@ class PortTestCase(unittest.TestCase):
         for port_name, port in comp.output_ports.items():
             ports.append((port_name, port))
 
-        self.assertEqual(ports[0][0], 'clear')
+        self.assertEqual(ports[0][0], "clear")
         self.assertEqual(ports[0][1].addr, port1.addr)
-        self.assertEqual(ports[1][0], 'print')
+        self.assertEqual(ports[1][0], "print")
         self.assertEqual(ports[1][1].addr, port2.addr)
-        self.assertEqual(ports[2][0], 'insert')
+        self.assertEqual(ports[2][0], "insert")
         self.assertEqual(ports[2][1].addr, port3.addr)
         del port1
         del port2
@@ -598,9 +670,9 @@ class PortTestCase(unittest.TestCase):
         ):
             def __init__(comp_self, config, params, obj):
                 nonlocal port1, port2, port3
-                port1 = comp_self._add_input_port('clear')
-                port2 = comp_self._add_input_port('print')
-                port3 = comp_self._add_input_port('insert')
+                port1 = comp_self._add_input_port("clear")
+                port2 = comp_self._add_input_port("print")
+                port3 = comp_self._add_input_port("insert")
 
         comp = self._create_comp(MyFilter)
         ports = []
@@ -608,11 +680,11 @@ class PortTestCase(unittest.TestCase):
         for port_name, port in comp.input_ports.items():
             ports.append((port_name, port))
 
-        self.assertEqual(ports[0][0], 'clear')
+        self.assertEqual(ports[0][0], "clear")
         self.assertEqual(ports[0][1].addr, port1.addr)
-        self.assertEqual(ports[1][0], 'print')
+        self.assertEqual(ports[1][0], "print")
         self.assertEqual(ports[1][1].addr, port2.addr)
-        self.assertEqual(ports[2][0], 'insert')
+        self.assertEqual(ports[2][0], "insert")
         self.assertEqual(ports[2][1].addr, port3.addr)
         del port1
         del port2
@@ -626,9 +698,9 @@ class PortTestCase(unittest.TestCase):
         class MySink(bt2._UserSinkComponent):
             def __init__(comp_self, config, params, obj):
                 nonlocal port1, port2, port3
-                port1 = comp_self._add_input_port('clear')
-                port2 = comp_self._add_input_port('print')
-                port3 = comp_self._add_input_port('insert')
+                port1 = comp_self._add_input_port("clear")
+                port2 = comp_self._add_input_port("print")
+                port3 = comp_self._add_input_port("insert")
 
             def _user_consume(self):
                 pass
@@ -639,11 +711,11 @@ class PortTestCase(unittest.TestCase):
         for port_name, port in comp.input_ports.items():
             ports.append((port_name, port))
 
-        self.assertEqual(ports[0][0], 'clear')
+        self.assertEqual(ports[0][0], "clear")
         self.assertEqual(ports[0][1].addr, port1.addr)
-        self.assertEqual(ports[1][0], 'print')
+        self.assertEqual(ports[1][0], "print")
         self.assertEqual(ports[1][1].addr, port2.addr)
-        self.assertEqual(ports[2][0], 'insert')
+        self.assertEqual(ports[2][0], "insert")
         self.assertEqual(ports[2][1].addr, port3.addr)
         del port1
         del port2
@@ -652,41 +724,41 @@ class PortTestCase(unittest.TestCase):
     def test_name(self):
         class MySink(bt2._UserSinkComponent):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_input_port('clear')
+                comp_self._add_input_port("clear")
 
             def _user_consume(self):
                 pass
 
         comp = self._create_comp(MySink)
-        self.assertEqual(comp.input_ports['clear'].name, 'clear')
+        self.assertEqual(comp.input_ports["clear"].name, "clear")
 
     def test_connection_none(self):
         class MySink(bt2._UserSinkComponent):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_input_port('clear')
+                comp_self._add_input_port("clear")
 
             def _user_consume(self):
                 pass
 
         comp = self._create_comp(MySink)
-        self.assertIsNone(comp.input_ports['clear'].connection)
+        self.assertIsNone(comp.input_ports["clear"].connection)
 
     def test_is_connected_false(self):
         class MySink(bt2._UserSinkComponent):
             def __init__(comp_self, config, params, obj):
-                comp_self._add_input_port('clear')
+                comp_self._add_input_port("clear")
 
             def _user_consume(self):
                 pass
 
         comp = self._create_comp(MySink)
-        self.assertFalse(comp.input_ports['clear'].is_connected)
+        self.assertFalse(comp.input_ports["clear"].is_connected)
 
     def test_self_name(self):
         class MySink(bt2._UserSinkComponent):
             def __init__(comp_self, config, params, obj):
-                port = comp_self._add_input_port('clear')
-                self.assertEqual(port.name, 'clear')
+                port = comp_self._add_input_port("clear")
+                self.assertEqual(port.name, "clear")
 
             def _user_consume(self):
                 pass
@@ -696,7 +768,7 @@ class PortTestCase(unittest.TestCase):
     def test_self_connection_none(self):
         class MySink(bt2._UserSinkComponent):
             def __init__(comp_self, config, params, obj):
-                port = comp_self._add_input_port('clear')
+                port = comp_self._add_input_port("clear")
                 self.assertIsNone(port.connection)
 
             def _user_consume(self):
@@ -707,7 +779,7 @@ class PortTestCase(unittest.TestCase):
     def test_self_is_connected_false(self):
         class MySink(bt2._UserSinkComponent):
             def __init__(comp_self, config, params, obj):
-                port = comp_self._add_input_port('clear')
+                port = comp_self._add_input_port("clear")
                 self.assertFalse(port.is_connected)
 
             def _user_consume(self):
@@ -727,11 +799,11 @@ class PortTestCase(unittest.TestCase):
             def __init__(comp_self, config, params, obj):
                 nonlocal user_datas
 
-                p = comp_self._add_output_port('port1')
+                p = comp_self._add_output_port("port1")
                 user_datas.append(p.user_data)
-                p = comp_self._add_output_port('port2', 2)
+                p = comp_self._add_output_port("port2", 2)
                 user_datas.append(p.user_data)
-                p = comp_self._add_output_port('port3', MyUserData())
+                p = comp_self._add_output_port("port3", MyUserData())
                 user_datas.append(p.user_data)
 
         user_datas = []
@@ -761,18 +833,18 @@ class PortTestCase(unittest.TestCase):
             def __init__(comp_self, config, params, obj):
                 nonlocal user_datas
 
-                p = comp_self._add_output_port('port1')
+                p = comp_self._add_output_port("port1")
                 user_datas.append(p.user_data)
-                p = comp_self._add_output_port('port2', 'user data string')
+                p = comp_self._add_output_port("port2", "user data string")
                 user_datas.append(p.user_data)
-                p = comp_self._add_output_port('port3', MyUserData())
+                p = comp_self._add_output_port("port3", MyUserData())
                 user_datas.append(p.user_data)
 
-                p = comp_self._add_input_port('port4')
+                p = comp_self._add_input_port("port4")
                 user_datas.append(p.user_data)
-                p = comp_self._add_input_port('port5', user_data={'user data': 'dict'})
+                p = comp_self._add_input_port("port5", user_data={"user data": "dict"})
                 user_datas.append(p.user_data)
-                p = comp_self._add_input_port('port6', MyUserData())
+                p = comp_self._add_input_port("port6", MyUserData())
                 user_datas.append(p.user_data)
 
         user_datas = []
@@ -781,10 +853,10 @@ class PortTestCase(unittest.TestCase):
         comp = self._create_comp(MyFilter)
         self.assertEqual(len(user_datas), 6)
         self.assertIs(user_datas[0], None)
-        self.assertEqual(user_datas[1], 'user data string')
+        self.assertEqual(user_datas[1], "user data string")
         self.assertIs(type(user_datas[2]), MyUserData)
         self.assertIs(user_datas[3], None)
-        self.assertEqual(user_datas[4], {'user data': 'dict'})
+        self.assertEqual(user_datas[4], {"user data": "dict"})
         self.assertIs(type(user_datas[5]), MyUserData)
 
         # Verify that the user data gets freed.
@@ -803,9 +875,9 @@ class PortTestCase(unittest.TestCase):
             def __init__(comp_self, config, params, obj):
                 nonlocal user_datas
 
-                p = comp_self._add_input_port('port1')
+                p = comp_self._add_input_port("port1")
                 user_datas.append(p.user_data)
-                p = comp_self._add_input_port('port2', MyUserData())
+                p = comp_self._add_input_port("port2", MyUserData())
                 user_datas.append(p.user_data)
 
             def _user_consume(self):
@@ -826,5 +898,5 @@ class PortTestCase(unittest.TestCase):
         self.assertEqual(objects_deleted, 1)
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     unittest.main()
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