Created utils test

test/utils/utils.test.js

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+import * as sinon from 'sinon';
+import L from 'leaflet';
+import marker2x from 'leaflet/dist/images/marker-icon-2x.png';
+import marker from 'leaflet/dist/images/marker-icon.png';
+import markerShadow from 'leaflet/dist/images/marker-shadow.png';
+import { stateFlagTimeout as stateFlagTimeoutFactory, determineOrderDir, fixLeafletIcons } from '../../src/utils/utils';
+
+describe('utils', () => {
+  describe('stateFlagTimeout', () => {
+    it('sets state and initializes timeout with provided delay', () => {
+      const setTimeout = sinon.fake((callback) => callback());
+      const setState = sinon.spy();
+      const stateFlagTimeout = stateFlagTimeoutFactory(setTimeout);
+      const delay = 5000;
+      const expectedSetStateCalls = 2;
+
+      stateFlagTimeout(setState, 'foo', false, delay);
+
+      expect(setState.callCount).toEqual(expectedSetStateCalls);
+      expect(setState.getCall(0).args).toEqual([{ foo: false }]);
+      expect(setState.getCall(1).args).toEqual([{ foo: true }]);
+      expect(setTimeout.callCount).toEqual(1);
+      expect(setTimeout.getCall(0).args[1]).toEqual(delay);
+    });
+  });
+
+  describe('determineOrderDir', () => {
+    it('returns ASC when current order field and selected field are different', () => {
+      expect(determineOrderDir('foo', 'bar')).toEqual('ASC');
+      expect(determineOrderDir('bar', 'foo')).toEqual('ASC');
+    });
+
+    it('returns ASC when no current order dir is provided', () => {
+      expect(determineOrderDir('foo', 'foo')).toEqual('ASC');
+      expect(determineOrderDir('bar', 'bar')).toEqual('ASC');
+    });
+
+    it('returns DESC when current order field and selected field are equal and current order dir is ASC', () => {
+      expect(determineOrderDir('foo', 'foo', 'ASC')).toEqual('DESC');
+      expect(determineOrderDir('bar', 'bar', 'ASC')).toEqual('DESC');
+    });
+
+    it('returns undefined when current order field and selected field are equal and current order dir is DESC', () => {
+      expect(determineOrderDir('foo', 'foo', 'DESC')).toBeUndefined();
+      expect(determineOrderDir('bar', 'bar', 'DESC')).toBeUndefined();
+    });
+  });
+
+  describe('fixLeafletIcons', () => {
+    it('updates icons used by leaflet', () => {
+      fixLeafletIcons();
+
+      const { iconRetinaUrl, iconUrl, shadowUrl } = L.Icon.Default.prototype.options;
+
+      expect(iconRetinaUrl).toEqual(marker2x);
+      expect(iconUrl).toEqual(marker);
+      expect(shadowUrl).toEqual(markerShadow);
+    });
+  });
+});