Add components test to sfg tests

test/test_sfg.py

@@ -20,7 +20,7 @@ class TestConstructor:
         add1 = Addition(None, None, "ADD1")
         add2 = Addition(None, None, "ADD2")
 
-        sig1 = add2.input(0).connect(add1)
+        sig1 = add2.input(0).connect(add1, "S1")
 
         sfg = SFG(input_signals=[sig1], output_signals=[sig1])
 
@@ -88,3 +88,29 @@ class TestDeepCopy:
         for g_id, component in mac_sfg._components_by_id.items():
             component_copy = mac_sfg_deep_copy.find_by_id(g_id)
             assert component.name == component_copy.name
+
+
+class TestComponents:
+
+    def test_advanced_components(self):
+        inp1 = Input("INP1")
+        inp2 = Input("INP2")
+        inp3 = Input("INP3")
+        add1 = Addition(None, None, "ADD1")
+        add2 = Addition(None, None, "ADD2")
+        mul1 = Multiplication(None, None, "MUL1")
+        out1 = Output(None, "OUT1")
+
+        add1.input(0).connect(inp1, "S1")
+        add1.input(1).connect(inp2, "S2")
+        add2.input(0).connect(add1, "S4")
+        add2.input(1).connect(inp3, "S3")
+        mul1.input(0).connect(add1, "S5")
+        mul1.input(1).connect(add2, "S6")
+        out1.input(0).connect(mul1, "S7")
+
+        mac_sfg = SFG(inputs=[inp1, inp2],
+                      outputs=[out1], name="mac_sfg")
+
+        assert set([comp.name for comp in mac_sfg.components]) == {
+            "INP1", "INP2", "INP3", "ADD1", "ADD2", "MUL1", "OUT1", "S1", "S2", "S3", "S4", "S5", "S6", "S7"}