0edb52054a
* add duckdb-ui-client & other ts pkgs * workflow fixes * fix working dir * no sparse checkout; specify package.json path * path to pnpm-lock.yaml * add check & build test * workflow step descriptions * use comments & names * one more naming tweak
62 lines
3.7 KiB
TypeScript
62 lines
3.7 KiB
TypeScript
import { expect, suite, test } from 'vitest';
|
||
import { getVarIntFromBytes } from '../../src/conversion/getVarIntFromBytes';
|
||
|
||
suite('getVarIntFromBytes', () => {
|
||
test('should return correct value for varint representation of 0', () => {
|
||
expect(
|
||
getVarIntFromBytes(new Uint8Array([0x80, 0x00, 0x01, 0x00])),
|
||
).toEqual(0n);
|
||
});
|
||
test('should return correct value for varint representation of 1', () => {
|
||
expect(
|
||
getVarIntFromBytes(new Uint8Array([0x80, 0x00, 0x01, 0x01])),
|
||
).toEqual(1n);
|
||
});
|
||
test('should return correct value for varint representation of -1', () => {
|
||
expect(
|
||
getVarIntFromBytes(new Uint8Array([0x7f, 0xff, 0xfe, 0xfe])),
|
||
).toEqual(-1n);
|
||
});
|
||
test('should return correct value for max varint', () => {
|
||
// max VARINT = max IEEE double = 2^1023 * (1 + (1 − 2^−52)) ~= 1.7976931348623157 * 10^308
|
||
// Note that the storage format supports much larger than this, but DuckDB specifies this max to support conversion to/from DOUBLE.
|
||
expect(
|
||
getVarIntFromBytes(
|
||
// prettier-ignore
|
||
new Uint8Array([0x80, 0x00, 0x80,
|
||
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||
]),
|
||
),
|
||
).toEqual(
|
||
179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368n,
|
||
);
|
||
});
|
||
test('should return correct value for min varint', () => {
|
||
// min VARINT = -max VARINT
|
||
expect(
|
||
getVarIntFromBytes(
|
||
// prettier-ignore
|
||
new Uint8Array([0x7F, 0xFF, 0x7F,
|
||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
||
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
||
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
||
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
||
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
||
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
||
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
||
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
||
]),
|
||
),
|
||
).toEqual(
|
||
-179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368n,
|
||
);
|
||
});
|
||
});
|