@fractorysolutions/safe-units/src/unit/__test__/quantityTests.ts

Type-safe TypeScript units of measure

import { Measure } from "../../measure/numberMeasure";
import * as Quantity from "../quantities";

describe("Quantities", () => {
  const QuantityNames = Object.keys(Quantity);

  function forEachQuantity(
    fn: (quantity: Measure<any>, name: string) => void,
  ): void {
    QuantityNames.forEach((name) => {
      fn((Quantity as any)[name], name);
    });
  }

  it("no two quantities should have the same dimensions", () => {
    forEachQuantity((a, aName) => {
      forEachQuantity((b, bName) => {
        if (aName === bName) {
          return;
        }
        try {
          expect(a.unit).not.toEqual(b.unit);
        } catch (e) {
          console.log(`Quantities '${aName}' and '${bName}' are the same.`);
          throw e;
        }
      });
    });
  });

  it("all quantities should be normalized", () => {
    forEachQuantity((quantity) => {
      expect(quantity.value).toBe(1);
    });
  });
});