feat: added rule based connection validation and connection limits to the editor

test/pages/visProgPage/visualProgrammingUI/VisProgStores.test.tsx

@@ -1,5 +1,6 @@
 import {act} from '@testing-library/react';
 import type {Connection, Edge, Node} from "@xyflow/react";
+import type {HandleRule, RuleResult} from "../../../../src/pages/VisProgPage/visualProgrammingUI/HandleRuleLogic.ts";
 import { NodeDisconnections } from "../../../../src/pages/VisProgPage/visualProgrammingUI/NodeRegistry.ts";
 import type {PhaseNodeData} from "../../../../src/pages/VisProgPage/visualProgrammingUI/nodes/PhaseNode.tsx";
 import useFlowStore from '../../../../src/pages/VisProgPage/visualProgrammingUI/VisProgStores.tsx';
@@ -594,5 +595,48 @@ describe('FlowStore Functionality', () => {
       expect(updatedState.nodes).toHaveLength(1);
       expect(updatedState.nodes[0]).toMatchObject(expected.node);
     })
-  })
+  describe('Handle Rule Registry', () => {
+    it('should register and retrieve rules', () => {
+      const mockRules: HandleRule[] = [() => ({ isSatisfied: true } as RuleResult)];
+
+      useFlowStore.getState().registerRules('node1', 'handleA', mockRules);
+      const rules = useFlowStore.getState().getTargetRules('node1', 'handleA');
+
+      expect(rules).toEqual(mockRules);
+    });
+
+    it('should warn and return empty array if rules are missing', () => {
+      const consoleSpy = jest.spyOn(console, 'warn').mockImplementation(() => {});
+
+      const rules = useFlowStore.getState().getTargetRules('missingNode', 'missingHandle');
+      expect(rules).toEqual([]);
+      expect(consoleSpy).toHaveBeenCalledWith(expect.stringContaining('No rules were registered'));
+
+      consoleSpy.mockRestore();
+    });
+
+    it('should unregister a specific handle rule', () => {
+      const mockRules: HandleRule[] = [() => ({ isSatisfied: true } as RuleResult)];
+      useFlowStore.getState().registerRules('node1', 'handleA', mockRules);
+
+      useFlowStore.getState().unregisterHandleRules('node1', 'handleA');
+      const rules = useFlowStore.getState().getTargetRules('node1', 'handleA');
+
+      expect(rules).toEqual([]);
+    });
+
+    it('should unregister all rules for a node', () => {
+      const mockRules: HandleRule[] = [() => ({ isSatisfied: true } as RuleResult)];
+      useFlowStore.getState().registerRules('node1', 'handleA', mockRules);
+      useFlowStore.getState().registerRules('node1', 'handleB', mockRules);
+      useFlowStore.getState().registerRules('node2', 'handleC', mockRules);
+
+      useFlowStore.getState().unregisterNodeRules('node1');
+
+      expect(useFlowStore.getState().getTargetRules('node1', 'handleA')).toEqual([]);
+      expect(useFlowStore.getState().getTargetRules('node1', 'handleB')).toEqual([]);
+      expect(useFlowStore.getState().getTargetRules('node2', 'handleC')).toEqual(mockRules);
+    });
+  });
+})
 });