diff --git a/tests/stores/mapPathStore.test.js b/tests/stores/mapPathStore.test.js
new file mode 100644
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--- /dev/null
+++ b/tests/stores/mapPathStore.test.js
@@ -0,0 +1,169 @@
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import { setActivePinia, createPinia } from 'pinia';
+
+// Mock allMapData store (used by createInsightWithPath / createPaths)
+vi.mock('@/stores/allMapData.js', () => ({
+  default: () => ({ insights: {} }),
+}));
+
+// Mock SVG asset imports
+vi.mock('@/assets/capsule1-glow.svg', () => ({ default: 'glow1' }));
+vi.mock('@/assets/capsule2-glow.svg', () => ({ default: 'glow2' }));
+vi.mock('@/assets/capsule3-glow.svg', () => ({ default: 'glow3' }));
+vi.mock('@/assets/capsule4-glow.svg', () => ({ default: 'glow4' }));
+vi.mock('@/assets/capsule1.svg', () => ({ default: 'cap1' }));
+vi.mock('@/assets/capsule2.svg', () => ({ default: 'cap2' }));
+vi.mock('@/assets/capsule3.svg', () => ({ default: 'cap3' }));
+vi.mock('@/assets/capsule4.svg', () => ({ default: 'cap4' }));
+
+import useMapPathStore from '@/stores/mapPathStore.ts';
+
+/**
+ * Creates a mock Cytoscape node.
+ */
+function mockNode(label, level = 0) {
+  const nodeData = { label, level, nodeImageUrl: '' };
+  const classes = new Set();
+  const node = {
+    data: vi.fn((key, value) => {
+      if (value !== undefined) {
+        nodeData[key] = value;
+        return node;
+      }
+      return nodeData[key];
+    }),
+    addClass: vi.fn((cls) => { classes.add(cls); return node; }),
+    removeClass: vi.fn((cls) => { classes.delete(cls); return node; }),
+    hasClass: (cls) => classes.has(cls),
+    outgoers: vi.fn(() => mockCollection([])),
+    incomers: vi.fn(() => mockCollection([])),
+    edgesTo: vi.fn(() => mockCollection([])),
+    edgesWith: vi.fn(() => mockCollection([])),
+    _nodeData: nodeData,
+    _classes: classes,
+  };
+  return node;
+}
+
+/**
+ * Creates a mock Cytoscape edge.
+ */
+function mockEdge() {
+  const classes = new Set();
+  const edge = {
+    addClass: vi.fn((cls) => { classes.add(cls); return edge; }),
+    removeClass: vi.fn((cls) => { classes.delete(cls); return edge; }),
+    source: vi.fn(() => mockNode('src')),
+    target: vi.fn(() => mockNode('tgt')),
+    _classes: classes,
+  };
+  return edge;
+}
+
+/**
+ * Creates a mock Cytoscape collection.
+ */
+function mockCollection(items) {
+  const col = {
+    forEach: (fn) => items.forEach(fn),
+    map: (fn) => items.map(fn),
+    filter: (fn) => mockCollection(items.filter(fn)),
+    addClass: vi.fn(() => col),
+    removeClass: vi.fn(() => col),
+    length: items.length,
+  };
+  return col;
+}
+
+/**
+ * Creates a mock Cytoscape instance.
+ */
+function mockCytoscape(nodes = [], edges = []) {
+  return {
+    nodes: vi.fn(() => mockCollection(nodes)),
+    edges: vi.fn(() => mockCollection(edges)),
+  };
+}
+
+describe('mapPathStore', () => {
+  let store;
+
+  beforeEach(() => {
+    setActivePinia(createPinia());
+    store = useMapPathStore();
+    vi.clearAllMocks();
+  });
+
+  it('has correct default state', () => {
+    expect(store.processOrBPMN).toBe('process');
+    expect(store.curveType).toBe('curved');
+    expect(store.directionType).toBe('horizontal');
+    expect(store.isBPMNOn).toBe(false);
+    expect(store.allPaths).toEqual([]);
+    expect(store.activeTrace).toBe(0);
+    expect(store.lastClickedNode).toBeNull();
+  });
+
+  it('setIsBPMNOn updates state', () => {
+    store.setIsBPMNOn(true);
+    expect(store.isBPMNOn).toBe(true);
+    store.setIsBPMNOn(false);
+    expect(store.isBPMNOn).toBe(false);
+  });
+
+  describe('clearAllHighlight', () => {
+    it('removes highlight classes from all nodes and edges', () => {
+      const node1 = mockNode('A', 0);
+      const edge1 = mockEdge();
+      const cy = mockCytoscape([node1], [edge1]);
+      store.cytoscape.process.curved.horizontal = cy;
+
+      store.clearAllHighlight();
+
+      expect(cy.edges).toHaveBeenCalled();
+      expect(cy.nodes).toHaveBeenCalled();
+    });
+
+    it('does not throw when cytoscape is null', () => {
+      store.cytoscape.process.curved.horizontal = null;
+      expect(() => store.clearAllHighlight()).not.toThrow();
+    });
+  });
+
+  describe('onNodeClickHighlightEdges', () => {
+    it('highlights clicked node and its edges', () => {
+      const node = mockNode('Activity', 1);
+      const outEdge = mockEdge();
+      const inEdge = mockEdge();
+      node.outgoers.mockReturnValue(mockCollection([outEdge]));
+      node.incomers.mockReturnValue(mockCollection([inEdge]));
+
+      store.cytoscape.process.curved.horizontal = mockCytoscape();
+
+      store.onNodeClickHighlightEdges(node);
+
+      expect(node.addClass).toHaveBeenCalledWith('highlight-node');
+      expect(outEdge.addClass).toHaveBeenCalledWith('highlight-edge');
+      expect(inEdge.addClass).toHaveBeenCalledWith('highlight-edge');
+      expect(store.lastClickedNode).toStrictEqual(node);
+    });
+  });
+
+  describe('onEdgeClickHighlightNodes', () => {
+    it('highlights source and target nodes of clicked edge', () => {
+      const src = mockNode('Start', 0);
+      const tgt = mockNode('End', 2);
+      const edge = mockEdge();
+      edge.source.mockReturnValue(src);
+      edge.target.mockReturnValue(tgt);
+
+      store.cytoscape.process.curved.horizontal = mockCytoscape();
+
+      store.onEdgeClickHighlightNodes(edge);
+
+      expect(src.addClass).toHaveBeenCalledWith('highlight-node');
+      expect(tgt.addClass).toHaveBeenCalledWith('highlight-node');
+      expect(edge.addClass).toHaveBeenCalledWith('highlight-edge');
+    });
+  });
+});