7ca2e97155
Sazerac is a library for data-driven tests, where a series of tests asserts that the return value of a function matches the expected value. It provides nice syntax for tightening this up. https://hackernoon.com/sazerac-data-driven-testing-for-javascript-e3408ac29d8c This converts our tests to use it, and replaces some similar home-grown code. I fixed one bug I encountered along the way: mikec/sazerac#12.
56 lines
1.8 KiB
JavaScript
56 lines
1.8 KiB
JavaScript
'use strict';
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const { test, given, forCases } = require('sazerac');
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const {
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coveragePercentage,
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colorScale,
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age
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} = require('./color-formatters');
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describe('Color formatters', function() {
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const byPercentage = colorScale([Number.EPSILON, 80, 90, 100]);
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test(byPercentage, () => {
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given(-1).expect('red');
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given(0).expect('red');
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given(0.5).expect('yellow');
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given(1).expect('yellow');
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given(50).expect('yellow');
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given(80).expect('yellowgreen');
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given(85).expect('yellowgreen');
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given(90).expect('green');
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given(100).expect('brightgreen');
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given(101).expect('brightgreen');
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forCases([-1, 0, 0.5, 1, 50, 80, 85, 90, 100, 101]
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.map(v => given(v).expect(coveragePercentage(v))))
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.should("return '%s', for parity with coveragePercentage()");
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});
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context('when reversed', function () {
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test(colorScale([7, 30, 180, 365, 730], undefined, true), () => {
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given(3).expect('brightgreen');
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given(7).expect('green');
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given(10).expect('green');
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given(60).expect('yellowgreen');
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given(250).expect('yellow');
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given(400).expect('orange');
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given(800).expect('red');
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});
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});
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const monthsAgo = months => {
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const result = new Date();
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// This looks wack but it works.
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result.setMonth(result.getMonth() - months);
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return result;
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};
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test(age, () => {
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given(Date.now()).describe('when given the current timestamp').expect('brightgreen');
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given(new Date()).describe('when given the current Date').expect('brightgreen');
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given(new Date(2001, 1, 1)).describe('when given a Date many years ago').expect('red');
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given(monthsAgo(2)).describe('when given a Date two months ago').expect('yellowgreen');
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given(monthsAgo(15)).describe('when given a Date 15 months ago').expect('orange');
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});
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});
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