60 lines
1.9 KiB
JavaScript
60 lines
1.9 KiB
JavaScript
import expect from '../expect.js';
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import {memoizeOne} from '../../../src/ol/functions.js';
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describe('ol/functions.js', function () {
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describe('memoizeOne()', function () {
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it('returns the result from the first call when called a second time with the same args', function () {
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const arg1 = {};
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const arg2 = {};
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const arg3 = {};
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function call(a1, a2, a3) {
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return {};
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}
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const memoized = memoizeOne(call);
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const result = memoized(arg1, arg2, arg3);
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expect(memoized(arg1, arg2, arg3)).to.be(result);
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});
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it('returns the result from the first call when called a second time with the same this object', function () {
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const arg1 = {};
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const arg2 = {};
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const arg3 = {};
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function call(a1, a2, a3) {
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return {};
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}
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const memoized = memoizeOne(call);
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const thisObj = {};
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const result = memoized.call(thisObj, arg1, arg2, arg3);
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expect(memoized.call(thisObj, arg1, arg2, arg3)).to.be(result);
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});
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it('returns a different result when called a second time with the different args', function () {
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const arg1 = {};
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const arg2 = {};
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const arg3 = {};
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function call(a1, a2, a3) {
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return {};
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}
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const memoized = memoizeOne(call);
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const result = memoized(arg1, arg2, arg3);
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expect(memoized(arg3, arg2, arg1)).not.to.be(result);
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});
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it('returns a different result when called a second time with a different this object', function () {
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const arg1 = {};
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const arg2 = {};
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const arg3 = {};
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function call(a1, a2, a3) {
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return {};
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}
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const firstThis = {};
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const secondThis = {};
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const memoized = memoizeOne(call);
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const result = memoized.call(firstThis, arg1, arg2, arg3);
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expect(memoized.call(secondThis, arg1, arg2, arg3)).not.to.be(result);
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});
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});
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});
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