Add store tests with mocked axios and apiError

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/stores/mapCompareStore.test.js

@@ -0,0 +1,31 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import { setActivePinia, createPinia } from 'pinia';
+import useMapCompareStore from '@/stores/mapCompareStore.ts';
+
+describe('mapCompareStore', () => {
+  let store;
+
+  beforeEach(() => {
+    setActivePinia(createPinia());
+    store = useMapCompareStore();
+  });
+
+  it('has correct default state', () => {
+    expect(store.routeParam).toEqual({
+      primaryType: '',
+      primaryId: '',
+      secondaryType: '',
+      secondaryId: '',
+    });
+  });
+
+  it('setCompareRouteParam sets all params', () => {
+    store.setCompareRouteParam('log', '1', 'filter', '2');
+    expect(store.routeParam).toEqual({
+      primaryType: 'log',
+      primaryId: '1',
+      secondaryType: 'filter',
+      secondaryId: '2',
+    });
+  });
+});