Added some test cases

test/port/test_inputport.py

@@ -7,9 +7,7 @@ from b_asic import InputPort
 import pytest
 
 def test_connect_multiple_signals(signals):
-    """
-    test if only one signal can connect to an input port
-    """
+    """test if only one signal can connect to an input port."""
     inp_port = InputPort(0, None)
 
     for s in signals:

test/port/test_outputport.py

@@ -6,9 +6,7 @@ from b_asic import OutputPort
 import pytest
 
 def test_connect_multiple_signals(signals):
-    """
-    test if multiple signals can connect to an output port
-    """
+    """test if multiple signals can connect to an output port."""
     outp_port = OutputPort(0, None)
 
     for s in signals:

test/port/test_port.py

+from b_asic import InputPort, OutputPort
+
+import pytest
+
+def test_connect_two_ports(signal):
+    """test if one inputport can connect to one outputport with one signal."""
+    inp_port = InputPort(0, None)
+    outp_port = OutputPort(1, None)
+
+    outp_port.connect(inp_port)
+
+    assert inp_port.connected_ports == [outp_port]
+    assert outp_port.connected_ports == [inp_port]
\ No newline at end of file

test/signal/test_signal.py

+from b_asic.port import InputPort, OutputPort
+from b_asic.signal import Signal
+
+import pytest
+
+def test_explicit_signal_creation():
+    inp_port = InputPort(0, None)
+    outp_port = OutputPort(1, None)
+    s = Signal(inp_port, outp_port)
+
+    assert inp_port.signals == [s]
+    assert outp_port.signals == [s]
+
+def test_implicit_signal_creation():
+    inp_port = InputPort(0, None)
+    outp_port = OutputPort(1, None)
+    s = inp_port.connect_port(outp_port)
+
+    assert inp_port.signals == [s]
+    assert outp_port.signals == [s]
\ No newline at end of file