Create test_flow_graph.py

tests_06/test_flow_graph.py

@@ -0,0 +1,27 @@
+from engine_03.flow.graph_models import table_to_flowgraph
+from engine_03.flow.mermaid_renderer import build_mermaid
+from engine_03.flow.simulator import simulate_flowgraph
+
+
+def test_basic_flow():
+    nodes = [
+        ["a", "Start", "event"],
+        ["b", "Middle", "function"],
+        ["c", "End", "output"],
+    ]
+    edges = [
+        ["a", "b", ""],
+        ["b", "c", ""],
+    ]
+
+    flow = table_to_flowgraph(nodes, edges)
+    mermaid = build_mermaid(flow)
+    sim = simulate_flowgraph(flow)
+
+    assert "a[Start]" in mermaid
+    assert "b[Middle]" in mermaid
+    assert "c[End]" in mermaid
+
+    assert "Node `a`" in sim
+    assert "Node `b`" in sim
+    assert "Node `c`" in sim