/
pb-long.spec.ts
313 lines (240 loc) · 9.87 KB
/
pb-long.spec.ts
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import {PbLong, PbULong} from "../src";
import {int64toString} from "../src/goog-varint";
describe('PbULong', function () {
it('can be constructed with bits', function () {
let bi = new PbULong(0, 1);
expect(bi.lo).toBe(0);
expect(bi.hi).toBe(1);
});
it('should from() max unsigned int64 string', function () {
let str = '18446744073709551615';
let uLong = PbULong.from(str);
expect(uLong.lo).toBe(-1);
expect(uLong.hi).toBe(-1);
});
it('should from() max unsigned int64 native bigint', function () {
if (globalThis.BigInt === undefined)
pending('No BigInt support on current platform');
// @ts-ignore
let uLong = PbULong.from(18446744073709551615n);
expect(uLong.lo).toBe(-1);
expect(uLong.hi).toBe(-1);
});
it('should from() max safe integer number', function () {
let uLong = PbULong.from(Number.MAX_SAFE_INTEGER);
expect(uLong.lo).toBe(-1);
expect(uLong.hi).toBe(2097151);
expect(uLong.toNumber()).toBe(Number.MAX_SAFE_INTEGER);
});
it('should toString() max unsigned int64', function () {
let uLong = new PbULong(-1, -1);
expect(uLong.toString()).toBe('18446744073709551615');
});
it('should toBigInt()', function () {
if (globalThis.BigInt === undefined)
pending('No BigInt support on current platform');
let uLong = new PbULong(-1, -1);
// @ts-ignore
expect(uLong.toBigInt()).toBe(18446744073709551615n);
});
it('should fail from() max unsigned int64 native bigint', function () {
if (globalThis.BigInt === undefined)
pending('No BigInt support on current platform');
// @ts-ignore
expect(() => PbULong.from(18446744073709551615n + 10n)).toThrowError("ulong too large");
});
it('should fail invalid from() value', function () {
expect(() => PbULong.from("")).toThrowError();
expect(() => PbULong.from("0.75")).toThrowError();
expect(() => PbULong.from("1,000")).toThrowError();
expect(() => PbULong.from("1-000")).toThrowError();
expect(() => PbULong.from("-1")).toThrowError();
expect(() => PbULong.from(-1)).toThrowError();
expect(() => PbULong.from(Number.NaN)).toThrowError();
expect(() => PbULong.from(Number.POSITIVE_INFINITY)).toThrowError();
});
it('0 has lo = 0, hi = 0', function () {
let ulong = PbULong.from(0);
expect(ulong.hi).toBe(0);
expect(ulong.lo).toBe(0);
});
it('int64toString should serialize the same was as BigInt.toString()', function () {
let ulong = PbULong.from(1661324400000);
expect(ulong.hi).toBe(386);
expect(ulong.lo).toBe(-827943552);
expect(ulong.toString()).toBe('1661324400000')
expect(int64toString(ulong.lo, ulong.hi)).toBe('1661324400000')
});
});
describe('PbLong', function () {
it('can be constructed with bits', function () {
let bi = new PbLong(0, 1);
expect(bi.lo).toBe(0);
expect(bi.hi).toBe(1);
});
it('should from() max signed int64 string', function () {
let str = '9223372036854775807';
let uLong = PbLong.from(str);
expect(uLong.lo).toBe(-1);
expect(uLong.hi).toBe(2147483647);
expect(uLong.toString()).toBe("9223372036854775807");
});
it('should from() min signed int64 string', function () {
let str = '-9223372036854775808';
let uLong = PbLong.from(str);
expect(uLong.lo).toBe(0);
expect(uLong.hi).toBe(-2147483648);
});
it('should toString() min signed int64', function () {
let uLong = new PbLong(0, -2147483648);
expect(uLong.toString()).toBe('-9223372036854775808');
});
it('should from() max safe integer number', function () {
let uLong = PbLong.from(Number.MAX_SAFE_INTEGER);
expect(uLong.lo).toBe(-1);
expect(uLong.hi).toBe(2097151);
expect(uLong.toNumber()).toBe(Number.MAX_SAFE_INTEGER);
});
it('should from() min safe integer number', function () {
let uLong = PbLong.from(Number.MIN_SAFE_INTEGER);
expect(uLong.lo).toBe(1);
expect(uLong.hi).toBe(-2097152);
expect(uLong.toNumber()).toBe(Number.MIN_SAFE_INTEGER);
});
it('should fail invalid from() value', function () {
expect(() => PbLong.from("")).toThrowError();
expect(() => PbLong.from("0.75")).toThrowError();
expect(() => PbLong.from("1,000")).toThrowError();
expect(() => PbLong.from("1-000")).toThrowError();
let maxSignedPlusOneStr = "9223372036854775808"
expect(() => PbLong.from(maxSignedPlusOneStr)).toThrowError();
expect(() => PbLong.from(Number.NaN)).toThrowError();
expect(() => PbLong.from(Number.POSITIVE_INFINITY)).toThrowError();
});
it('should toBigInt()', function () {
if (globalThis.BigInt === undefined)
pending('No BigInt support on current platform');
let bi = new PbLong(-620756991, 53471156);
// @ts-ignore
expect(bi.toBigInt()).toBe(229656869973524481n);
bi = new PbLong(1234567890, 0);
// @ts-ignore
expect(bi.toBigInt()).toBe(1234567890n);
// signed max value
bi = new PbLong(-1, 2147483647);
// @ts-ignore
expect(bi.toBigInt()).toBe(9223372036854775807n);
});
it('should isNegative()', function () {
let long = PbLong.from(-9223372)
expect(long.isNegative()).toBeTrue();
long = PbLong.from("-9223372")
expect(long.isNegative()).toBeTrue();
long = PbLong.from(9223372)
expect(long.isNegative()).toBeFalse();
long = PbLong.from("9223372")
expect(long.isNegative()).toBeFalse();
})
it('should isNegative() with negative native bigint', function () {
if (globalThis.BigInt === undefined)
pending('No BigInt support on current platform');
// @ts-ignore
let long = PbLong.from(-9223372036854775808n)
expect(long.isNegative()).toBeTrue();
// @ts-ignore
long = PbLong.from(9223372036854775807n)
expect(long.isNegative()).toBeFalse();
})
it('from(bigint) set expected bits', function () {
if (globalThis.BigInt === undefined)
pending('No BigInt support on current platform');
// @ts-ignore
let bi = PbLong.from(9223372036854775807n);
expect(bi.lo).toBe(0xFFFFFFFF | 0);
expect(bi.hi).toBe(0x7FFFFFFF | 0);
// @ts-ignore
expect(bi.toBigInt()).toBe(9223372036854775807n);
});
it('0 has lo = 0, hi = 0', function () {
let ulong = PbLong.from(0);
expect(ulong.hi).toBe(0);
expect(ulong.lo).toBe(0);
});
});
describe('testing native bigint', function () {
it('max uint64 value should survive string conversion', function () {
if (globalThis.BigInt === undefined)
pending('No BigInt support on current platform');
// @ts-ignore
let m = 18446744073709551615n;
let s = "18446744073709551615"
expect(m.toString()).toBe(s);
expect(globalThis.BigInt(s)).toBe(m);
});
it('min int64 value should survive string conversion', function () {
if (globalThis.BigInt === undefined)
pending('No BigInt support on current platform');
// @ts-ignore
let m = -9223372036854775808n;
let s = "-9223372036854775808"
expect(m.toString()).toBe(s);
expect(globalThis.BigInt(s)).toBe(m);
});
it('max int64 value should survive string conversion', function () {
if (globalThis.BigInt === undefined)
pending('No BigInt support on current platform');
// @ts-ignore
let m = 9223372036854775807n;
let s = "9223372036854775807"
expect(m.toString()).toBe(s);
expect(globalThis.BigInt(s)).toBe(m);
});
it('max uint64 value should survive DataView round trip', function () {
if (globalThis.BigInt === undefined)
pending('No BigInt support on current platform');
// @ts-ignore
let expected = 18446744073709551615n;
// write
let view64 = new DataView(new ArrayBuffer(8));
view64.setBigUint64(0, expected, true);
let lo = view64.getInt32(0, true) | 0;
let hi = view64.getInt32(4, true) | 0;
// read
view64.setInt32(0, lo, true);
view64.setInt32(4, hi, true);
let bigint = view64.getBigUint64(0, true);
expect(bigint === expected).toBeTrue();
});
it('max int64 value should survive DataView round trip', function () {
if (globalThis.BigInt === undefined)
pending('No BigInt support on current platform');
// @ts-ignore
let expected = 9223372036854775807n;
// write
let view64 = new DataView(new ArrayBuffer(8));
view64.setBigInt64(0, expected, true);
let lo = view64.getInt32(0, true) | 0;
let hi = view64.getInt32(4, true) | 0;
// read
view64.setInt32(0, lo, true);
view64.setInt32(4, hi, true);
let actual = view64.getBigInt64(0, true);
expect(actual.toString()).toBe(expected.toString());
});
it('min int64 value should survive DataView round trip', function () {
if (globalThis.BigInt === undefined)
pending('No BigInt support on current platform');
// @ts-ignore
let expected = -9223372036854775808n;
// write
let view64 = new DataView(new ArrayBuffer(8));
view64.setBigInt64(0, expected, true);
let lo = view64.getInt32(0, true) | 0;
let hi = view64.getInt32(4, true) | 0;
// read
view64.setInt32(0, lo, true);
view64.setInt32(4, hi, true);
let actual = view64.getBigInt64(0, true);
expect(actual.toString()).toBe(expected.toString());
});
});