81 lines
2.5 KiB
JavaScript
81 lines
2.5 KiB
JavaScript
import {
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getAverageByMonth,
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getEarliestDate,
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generateDataKeys,
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} from '~/analytics/instance_statistics/utils';
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import {
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mockCountsData1,
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mockCountsData2,
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countsMonthlyChartData1,
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countsMonthlyChartData2,
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} from './mock_data';
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describe('getAverageByMonth', () => {
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it('collects data into average by months', () => {
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expect(getAverageByMonth(mockCountsData1)).toStrictEqual(countsMonthlyChartData1);
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expect(getAverageByMonth(mockCountsData2)).toStrictEqual(countsMonthlyChartData2);
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});
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it('it transforms a data point to the first of the month', () => {
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const item = mockCountsData1[0];
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const firstOfTheMonth = item.recordedAt.replace(/-[0-9]{2}$/, '-01');
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expect(getAverageByMonth([item])).toStrictEqual([[firstOfTheMonth, item.count]]);
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});
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it('it uses sane defaults', () => {
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expect(getAverageByMonth()).toStrictEqual([]);
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});
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it('it errors when passing null', () => {
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expect(() => {
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getAverageByMonth(null);
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}).toThrow();
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});
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describe('when shouldRound = true', () => {
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const options = { shouldRound: true };
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it('rounds the averages', () => {
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const roundedData1 = countsMonthlyChartData1.map(([date, avg]) => [date, Math.round(avg)]);
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const roundedData2 = countsMonthlyChartData2.map(([date, avg]) => [date, Math.round(avg)]);
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expect(getAverageByMonth(mockCountsData1, options)).toStrictEqual(roundedData1);
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expect(getAverageByMonth(mockCountsData2, options)).toStrictEqual(roundedData2);
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});
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});
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});
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describe('getEarliestDate', () => {
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it('returns the date of the final item in the array', () => {
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expect(getEarliestDate(mockCountsData1)).toBe('2020-06-12');
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});
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it('returns null for an empty array', () => {
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expect(getEarliestDate([])).toBeNull();
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});
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it("returns null if the array has data but `recordedAt` isn't defined", () => {
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expect(
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getEarliestDate(mockCountsData1.map(({ recordedAt: date, ...rest }) => ({ date, ...rest }))),
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).toBeNull();
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});
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});
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describe('generateDataKeys', () => {
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const fakeQueries = [
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{ identifier: 'from' },
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{ identifier: 'first' },
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{ identifier: 'to' },
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{ identifier: 'last' },
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];
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const defaultValue = 'default value';
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const res = generateDataKeys(fakeQueries, defaultValue);
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it('extracts each query identifier and sets them as object keys', () => {
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expect(Object.keys(res)).toEqual(['from', 'first', 'to', 'last']);
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});
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it('sets every value to the `defaultValue` provided', () => {
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expect(Object.values(res)).toEqual(Array(fakeQueries.length).fill(defaultValue));
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});
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});
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