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49 lines
1.4 KiB
TypeScript
49 lines
1.4 KiB
TypeScript
import { binData } from '@/shared/charts/binCount';
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describe('binCount.ts', () => {
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it('Bins data as expected', () => {
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const testData = [1, 1, 2, 3, 5, 6, 8, 10];
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const res = binData(testData, 3);
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expect(res.length).toEqual(3);
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expect(res).toEqual([
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[1, 4],
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[4.03, 2],
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[7.06, 2],
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]);
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expect(res.map((v) => v[1]).reduce((a, b) => a + b)).toEqual(testData.length);
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const res1 = binData(testData, 5);
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// expect(res1.length).toEqual(5);
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expect(res1).toEqual([
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[1, 3],
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[2.818, 1],
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[4.636, 2],
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[6.454, 1],
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[8.272, 1],
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]);
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expect(res1.map((v) => v[1]).reduce((a, b) => a + b)).toEqual(testData.length);
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});
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it('Bins data with negatives', () => {
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const testData = [1, 1, 2, 3, 5, 6, 8, -1, -3, -5, -4];
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const res = binData(testData, 3);
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expect(res.length).toEqual(3);
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expect(res.map((v) => v[1]).reduce((a, b) => a + b)).toEqual(testData.length);
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expect(res).toEqual([
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[-5, 4],
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[-0.623, 4],
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[3.753, 3],
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]);
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});
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it('Bins data performant', () => {
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const randomSize = 20000;
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const randomData = Array.from({ length: randomSize }, () => Math.floor(Math.random() * 10));
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const startTime = Date.now();
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const res = binData(randomData, 5);
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const endTime = Date.now();
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expect(endTime - startTime).toBeLessThan(20);
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expect(res.map((v) => v[1]).reduce((a, b) => a + b)).toEqual(randomData.length);
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});
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});
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