70 lines
2.1 KiB
TypeScript
70 lines
2.1 KiB
TypeScript
import _ from 'lodash';
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import { initialMapState, reevaluateState } from './map';
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//interface CustomMatchers<R = unknown> {
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// isDeepEqual(received: any, target: any): R;
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//}
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//declare global {
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// namespace jest {
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// interface Expect extends CustomMatchers {}
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// interface Matchers<R> extends CustomMatchers<R> {}
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// interface InverseAsymmetricMatchers extends CustomMatchers {}
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// }
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//}
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expect.extend({
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isDeepEqual: (received: any, target: any) => {
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const pass = _.isEqual(received, target);
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if (pass) {
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return { message: () => '', pass: true };
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}
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return {
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message: () =>
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`${JSON.stringify(received)} instead of\n ${JSON.stringify(target)}`,
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pass: false,
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};
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},
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isAlmostDeepEqual: (received: any, target: any, delta: number) => {
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const pass = _.isEqualWith(received, target, (r: any, t: any) => {
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if (typeof r !== 'number' || typeof t !== 'number') {
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return undefined;
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}
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console.log(`r: ${r}, t:${t}, ${Math.abs(r - t) <= delta}`);
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return Math.abs(r - t) <= delta;
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});
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if (pass) {
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return { message: () => '', pass: true };
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}
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return {
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message: () =>
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`${JSON.stringify(received)} instead of\n ${JSON.stringify(target)}`,
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pass: false,
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};
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},
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});
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describe('Our isAlmostDeepEqual matcher', () => {
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test('compares correctly two numbers that are almost equals', () => {
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expect({ x: 1.001 }).isAlmostDeepEqual({ x: 1 }, 1e-2);
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});
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});
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describe('Map store methods', () => {
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test('initialize its state', () => {
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const state = _.cloneDeep(initialMapState);
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expect(state.tiles.nb.x).not.toBe(0);
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});
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test('reevaluateState keeps the same values', () => {
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const state = _.cloneDeep(initialMapState);
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reevaluateState(state);
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expect(state).isAlmostDeepEqual(initialMapState, 1e-7);
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});
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test('reevaluateState computes the right longitude after a shift 50 pixels left', () => {
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const state = _.cloneDeep(initialMapState);
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state.slippy.translation.x = state.slippy.translation.x - 50;
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reevaluateState(state);
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expect(state.scope.center.lon).not.toBe(77.5539501);
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});
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});
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