it("should be parsed when prefixed", () => {
expect(Qty("mAh").eq(Qty("3.6 C"))).toBe(true);
});
it("should be cached", () => {
const qty = Qty("100 m"),
converted = qty.to("ft");
expect(qty.to("ft") === converted).toBe(true);
});
it("should be supported as prefix", () => {
// µ as greek letter
expect(Qty("1 \u03BCm").eq(Qty("1 um"))).toBe(true);
// µ as micro sign
expect(Qty("1 \u00B5m").eq(Qty("1 um"))).toBe(true);
});
it("should allow whitespaces between sign and scalar", () => {
const qty = Qty("- 1m");
expect(qty.scalar).toEqual(-1);
expect(qty.units()).toEqual("m");
});
it("should return true with dimensionless quantities", () => {
const qty1 = Qty("1");
const qty2 = Qty("2");
expect(qty1.isCompatible(qty2)).toBe(true);
});
it("should accept empty string as unitless 1", () => {
expect(Qty("").same(Qty("1"))).toBe(true);
expect(Qty(" ").same(Qty("1"))).toBe(true);
});
it("should keep init value as is", () => {
const initValue = " 66 cm3 ";
const qty = Qty(initValue);
expect(qty.initValue).toEqual(initValue);
});
it("should create from numbers with explicit units", () => {
const qty = Qty(1.5, "m");
expect(qty.scalar).toBe(1.5);
expect(qty.numerator).toEqual(["<meter>"]);
expect(qty.denominator).toEqual(["<1>"]);
});
expect(() => { Qty("-1 tempR"); }).toThrow("Temperatures must not be less than absolute zero");
it("should create unit only", () => {
const qty = Qty("m");
expect(qty.numerator).toEqual(["<meter>"]);
expect(qty.scalar).toBe(1);
});
