leaflet-elevation/src/utils.spec.js at master · Codeminer42/leaflet-elevation · GitHub

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/**
 * src/utils.js
 */

import { suite } from "uvu";
import * as assert from "uvu/assert";
import "../test/setup/jsdom.js";
import { iAvg, iMin, iMax, iSum } from "../src/utils.js";

const toFixed = (n) => +n.toFixed(2);

const test = suite("src/utils.js");

test("iAvg()", () => {
  let avg;
  avg = iAvg(100, undefined, 1);
  assert.is(toFixed(avg), 100); // average for [100] is 100
  avg = iAvg(100, avg, 2);
  assert.is(toFixed(avg), 100); // average for [100, 100] is 100
  avg = iAvg(200, avg, 3);
  assert.is(toFixed(avg), 133.33); // average for [100, 100, 200] is 133.33
  avg = iAvg(200, avg, 4);
  assert.is(toFixed(avg), 150); // average for [100, 100, 200, 200] is 150
  avg = iAvg(NaN, avg, 5);
  assert.ok(isNaN(avg)); // average for [100, 100, 200, 200, NaN] is NaN
});

test("iMin()", () => {
  let min;
  min = iMin(100, undefined);
  assert.is(toFixed(min), 100); // min for [100] is 100
  min = iMin(NaN, min);
  assert.is(toFixed(min), 100); // min for [100, NaN] is 100
  min = iMin(0, min);
  assert.is(toFixed(min), 0); // min for [100, NaN, 0] is 100
  min = iMin(-200, min);
  assert.is(toFixed(min), -200); // min for [100, NaN, 0, -200] is -200
  min = iMin(200, min);
  assert.is(toFixed(min), -200); // min for [100, NaN, -100, -200, 200] is -200
});

test("iMax()", () => {
  let max;
  max = iMax(100, undefined);
  assert.is(toFixed(max), 100); // max for [100] is 100
  max = iMax(NaN, max);
  assert.is(toFixed(max), 100); // max for [100, NaN] is 100
  max = iMax(0, max);
  assert.is(toFixed(max), 100); // max for [100, NaN, 0] is 100
  max = iMax(-200, max);
  assert.is(toFixed(max), 100); // max for [100, NaN, 0, -200] is 100
  max = iMax(200, max);
  assert.is(toFixed(max), 200); // max for [100, NaN, -100, -200, 200] is 200
});

test("iSum()", () => {
  let sum;
  sum = iSum(10.25, undefined);
  assert.is(toFixed(sum), 10.25); // sum for [10.25] is 10.25
  sum = iSum(0, sum);
  assert.is(toFixed(sum), 10.25); // sum for [10.25, 0] is 10.25
  sum = iSum(-0.25, sum);
  assert.is(toFixed(sum), 10); // sum for [10.25, 0, -0.25] is 10
  sum = iSum(-10, sum);
  assert.is(toFixed(sum), 0); // sum for [10.25, 0, -0.25, -10] is 0
  sum = iSum(NaN, sum);
  assert.ok(isNaN(sum)); // sum for [10.25, 0, -0.25, -10, NaN] is NaN
});

test.run();