Jaco
a030330808
* Additional test cleanups * More compact test loops * Correct float expected values * Adjust
53 lines
1.8 KiB
TypeScript
53 lines
1.8 KiB
TypeScript
// Copyright 2017-2023 @polkadot/util authors & contributors
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// SPDX-License-Identifier: Apache-2.0
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/// <reference types="@polkadot/dev-test/globals.d.ts" />
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import { u8aToHex } from '../u8a/index.js';
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import { floatToU8a } from './index.js';
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class ExtNumber extends Number {
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foo = 'bar';
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}
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class ExtString extends String {
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foo = 'bar';
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}
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// NOTE Hex value outputs created via online conversion tool:
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// https://www.h-schmidt.net/FloatConverter/IEEE754.html
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// eslint-disable-next-line @typescript-eslint/ban-types
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const TESTS: [isLe: boolean | undefined, bitLength: 32 | 64 | undefined, input: String | string | number | Number, output: string][] = [
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[undefined, undefined, +0.0, '0x00000000'],
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[undefined, undefined, -0.0, '0x00000080'],
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[undefined, undefined, 123.456, '0x79e9f642'],
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[undefined, undefined, '123.456', '0x79e9f642'],
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[undefined, undefined, new ExtNumber(123.456), '0x79e9f642'],
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[undefined, undefined, new ExtString(123.456), '0x79e9f642'],
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[true, 32, new ExtString(123.456), '0x79e9f642'],
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[true, undefined, Number.NaN, '0x0000c07f'],
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[false, undefined, -0.0, '0x80000000'],
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[undefined, 64, +0.0, '0x0000000000000000'],
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[true, 64, -0.0, '0x0000000000000080'],
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[false, 64, -0.0, '0x8000000000000000'],
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[undefined, 64, Number.NaN, '0x000000000000f87f']
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];
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describe('floatToU8a', (): void => {
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it('throws on invalid bitLength', (): void => {
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expect(
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() => floatToU8a(123, { bitLength: 48 as 32 })
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).toThrow();
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});
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describe('conversion tests', (): void => {
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TESTS.forEach(([isLe, bitLength, input, output], i): void => {
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it(`#${i}: correctly encodes ${typeof input === 'number' ? input : input.toString()} (typeof=${typeof input})`, (): void => {
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expect(
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u8aToHex(floatToU8a(input, { bitLength, isLe }))
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).toEqual(output);
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});
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});
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});
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});
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