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Merged
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Feb 17, 2024
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Additional int testing #3

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304 changes: 0 additions & 304 deletions test/bigint64.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -49,307 +49,3 @@ describe("useBigInt64: true", () => {
assert.deepStrictEqual(decoded, value);
});
});

interface TestCase {
input: bigint;
expected: Map<IntMode, number | bigint | "error">;
}

// declared as a function to delay referencing the BigInt constructor
function BIGINTSPECS(): Record<string, TestCase> {
return {
ZERO: {
input: BigInt(0),
expected: new Map<IntMode, number | bigint>([
[IntMode.UNSAFE_NUMBER, 0],
[IntMode.SAFE_NUMBER, 0],
[IntMode.MIXED, 0],
[IntMode.BIGINT, BigInt(0)],
]),
},
ONE: {
input: BigInt(1),
expected: new Map<IntMode, number | bigint>([
[IntMode.UNSAFE_NUMBER, 1],
[IntMode.SAFE_NUMBER, 1],
[IntMode.MIXED, 1],
[IntMode.BIGINT, BigInt(1)],
]),
},
MINUS_ONE: {
input: BigInt(-1),
expected: new Map<IntMode, number | bigint>([
[IntMode.UNSAFE_NUMBER, -1],
[IntMode.SAFE_NUMBER, -1],
[IntMode.MIXED, -1],
[IntMode.BIGINT, BigInt(-1)],
]),
},
X_FF: {
input: BigInt(0xff),
expected: new Map<IntMode, number | bigint>([
[IntMode.UNSAFE_NUMBER, 0xff],
[IntMode.SAFE_NUMBER, 0xff],
[IntMode.MIXED, 0xff],
[IntMode.BIGINT, BigInt(0xff)],
]),
},
MINUS_X_FF: {
input: BigInt(-0xff),
expected: new Map<IntMode, number | bigint>([
[IntMode.UNSAFE_NUMBER, -0xff],
[IntMode.SAFE_NUMBER, -0xff],
[IntMode.MIXED, -0xff],
[IntMode.BIGINT, BigInt(-0xff)],
]),
},
INT32_MAX: {
input: BigInt(0x7fffffff),
expected: new Map<IntMode, number | bigint>([
[IntMode.UNSAFE_NUMBER, 0x7fffffff],
[IntMode.SAFE_NUMBER, 0x7fffffff],
[IntMode.MIXED, 0x7fffffff],
[IntMode.BIGINT, BigInt(0x7fffffff)],
]),
},
INT32_MIN: {
input: BigInt(-0x7fffffff - 1),
expected: new Map<IntMode, number | bigint>([
[IntMode.UNSAFE_NUMBER, -0x7fffffff - 1],
[IntMode.SAFE_NUMBER, -0x7fffffff - 1],
[IntMode.MIXED, -0x7fffffff - 1],
[IntMode.BIGINT, BigInt(-0x7fffffff - 1)],
]),
},
MAX_SAFE_INTEGER: {
input: BigInt(Number.MAX_SAFE_INTEGER),
expected: new Map<IntMode, number | bigint>([
[IntMode.UNSAFE_NUMBER, Number.MAX_SAFE_INTEGER],
[IntMode.SAFE_NUMBER, Number.MAX_SAFE_INTEGER],
[IntMode.MIXED, Number.MAX_SAFE_INTEGER],
[IntMode.BIGINT, BigInt(Number.MAX_SAFE_INTEGER)],
]),
},
MAX_SAFE_INTEGER_PLUS_ONE: {
input: BigInt(Number.MAX_SAFE_INTEGER) + BigInt(1),
expected: new Map<IntMode, number | bigint | "error">([
// exclude IntMode.UNSAFE_NUMBER, behavior will not be exact
[IntMode.SAFE_NUMBER, "error"],
[IntMode.MIXED, BigInt(Number.MAX_SAFE_INTEGER) + BigInt(1)],
[IntMode.BIGINT, BigInt(Number.MAX_SAFE_INTEGER) + BigInt(1)],
]),
},
MIN_SAFE_INTEGER: {
input: BigInt(Number.MIN_SAFE_INTEGER),
expected: new Map<IntMode, number | bigint>([
[IntMode.UNSAFE_NUMBER, Number.MIN_SAFE_INTEGER],
[IntMode.SAFE_NUMBER, Number.MIN_SAFE_INTEGER],
[IntMode.MIXED, Number.MIN_SAFE_INTEGER],
[IntMode.BIGINT, BigInt(Number.MIN_SAFE_INTEGER)],
]),
},
MIN_SAFE_INTEGER_MINUS_ONE: {
input: BigInt(Number.MIN_SAFE_INTEGER) - BigInt(1),
expected: new Map<IntMode, number | bigint | "error">([
// exclude IntMode.UNSAFE_NUMBER, behavior will not be exact
[IntMode.SAFE_NUMBER, "error"],
[IntMode.MIXED, BigInt(Number.MIN_SAFE_INTEGER) - BigInt(1)],
[IntMode.BIGINT, BigInt(Number.MIN_SAFE_INTEGER) - BigInt(1)],
]),
},
INT64_MAX: {
input: BigInt("0x7fffffffffffffff"),
expected: new Map<IntMode, number | bigint | "error">([
// exclude IntMode.UNSAFE_NUMBER, behavior will not be exact
[IntMode.SAFE_NUMBER, "error"],
[IntMode.MIXED, BigInt("0x7fffffffffffffff")],
[IntMode.BIGINT, BigInt("0x7fffffffffffffff")],
]),
},
INT64_MIN: {
input: BigInt(-1) * BigInt("0x8000000000000000"),
expected: new Map<IntMode, number | bigint | "error">([
// exclude IntMode.UNSAFE_NUMBER, behavior will not be exact
[IntMode.SAFE_NUMBER, "error"],
[IntMode.MIXED, BigInt(-1) * BigInt("0x8000000000000000")],
[IntMode.BIGINT, BigInt(-1) * BigInt("0x8000000000000000")],
]),
},
};
}

// declared as a function to delay referencing the BigInt constructor
function BIGUINTSPECS(): Record<string, TestCase> {
return {
ZERO: {
input: BigInt(0),
expected: new Map<IntMode, number | bigint>([
[IntMode.UNSAFE_NUMBER, 0],
[IntMode.SAFE_NUMBER, 0],
[IntMode.MIXED, 0],
[IntMode.BIGINT, BigInt(0)],
]),
},
ONE: {
input: BigInt(1),
expected: new Map<IntMode, number | bigint>([
[IntMode.UNSAFE_NUMBER, 1],
[IntMode.SAFE_NUMBER, 1],
[IntMode.MIXED, 1],
[IntMode.BIGINT, BigInt(1)],
]),
},
X_FF: {
input: BigInt(0xff),
expected: new Map<IntMode, number | bigint>([
[IntMode.UNSAFE_NUMBER, 0xff],
[IntMode.SAFE_NUMBER, 0xff],
[IntMode.MIXED, 0xff],
[IntMode.BIGINT, BigInt(0xff)],
]),
},
UINT32_MAX: {
input: BigInt(0xffffffff),
expected: new Map<IntMode, number | bigint>([
[IntMode.UNSAFE_NUMBER, 0xffffffff],
[IntMode.SAFE_NUMBER, 0xffffffff],
[IntMode.MIXED, 0xffffffff],
[IntMode.BIGINT, BigInt(0xffffffff)],
]),
},
MAX_SAFE_INTEGER: {
input: BigInt(Number.MAX_SAFE_INTEGER),
expected: new Map<IntMode, number | bigint>([
[IntMode.UNSAFE_NUMBER, Number.MAX_SAFE_INTEGER],
[IntMode.SAFE_NUMBER, Number.MAX_SAFE_INTEGER],
[IntMode.MIXED, Number.MAX_SAFE_INTEGER],
[IntMode.BIGINT, BigInt(Number.MAX_SAFE_INTEGER)],
]),
},
MAX_SAFE_INTEGER_PLUS_ONE: {
input: BigInt(Number.MAX_SAFE_INTEGER) + BigInt(1),
expected: new Map<IntMode, number | bigint | "error">([
// exclude IntMode.UNSAFE_NUMBER, behavior will not be exact
[IntMode.SAFE_NUMBER, "error"],
[IntMode.MIXED, BigInt(Number.MAX_SAFE_INTEGER) + BigInt(1)],
[IntMode.BIGINT, BigInt(Number.MAX_SAFE_INTEGER) + BigInt(1)],
]),
},
UINT64_MAX: {
input: BigInt("0xffffffffffffffff"),
expected: new Map<IntMode, number | bigint | "error">([
// exclude IntMode.UNSAFE_NUMBER, behavior will not be exact
[IntMode.SAFE_NUMBER, "error"],
[IntMode.MIXED, BigInt("0xffffffffffffffff")],
[IntMode.BIGINT, BigInt("0xffffffffffffffff")],
]),
},
};
}

function abs(value: bigint): bigint {
if (value < 0) {
return BigInt(-1) * value;
}
return value;
}

const extensionCodec = new ExtensionCodec();
extensionCodec.register({
type: 0,
encode: (input: unknown) => {
if (typeof input === "bigint") {
if (input <= Number.MAX_SAFE_INTEGER && input >= Number.MIN_SAFE_INTEGER) {
return encode(parseInt(input.toString(), 10));
} else {
return encode(input.toString());
}
} else {
return null;
}
},
decode: (data: Uint8Array) => {
const val = decode(data);
if (!(typeof val === "string" || typeof val === "number")) {
throw new DecodeError(`unexpected BigInt source: ${val} (${typeof val})`);
}
return BigInt(val);
},
});
context("extension", () => {
it("encodes and decodes 0n", () => {
const value = BigInt(0);
const encoded = encode(value, { extensionCodec });
assert.deepStrictEqual(decode(encoded, { extensionCodec }), value);
});

it("encodes and decodes MAX_SAFE_INTEGER+1", () => {
const value = BigInt(Number.MAX_SAFE_INTEGER) + BigInt(1);
const encoded = encode(value, { extensionCodec });
assert.deepStrictEqual(decode(encoded, { extensionCodec }), value);
});

it("encodes and decodes MIN_SAFE_INTEGER-1", () => {
const value = BigInt(Number.MIN_SAFE_INTEGER) - BigInt(1);
const encoded = encode(value, { extensionCodec });
assert.deepStrictEqual(decode(encoded, { extensionCodec }), value);
});
});

context("native", () => {
context("int 64", () => {
const specs = BIGINTSPECS();

for (const name of Object.keys(specs)) {
const testCase = specs[name]!;

it(`sets and gets ${testCase.input} (${testCase.input < 0 ? "-" : ""}0x${abs(testCase.input).toString(
16,
)})`, () => {
const b = new Uint8Array(8);
const view = new DataView(b.buffer);
view.setBigInt64(0, testCase.input);
for (const [mode, expected] of testCase.expected) {
if (expected === "error") {
assert.throws(
() => getInt64(view, 0, mode),
new RegExp(
`Mode is IntMode\\.SAFE_NUMBER and value is not a safe integer: ${testCase.input < 0 ? "-" : ""}0x${abs(
testCase.input,
).toString(16)}$`,
),
);
continue;
}
assert.deepStrictEqual(getInt64(view, 0, mode), expected);
}
});
}
});

context("uint 64", () => {
const specs = BIGUINTSPECS();

for (const name of Object.keys(specs)) {
const testCase = specs[name]!;

it(`sets and gets ${testCase.input} (0x${testCase.input.toString(16)})`, () => {
const b = new Uint8Array(8);
const view = new DataView(b.buffer);
view.setBigUint64(0, testCase.input);
for (const [mode, expected] of testCase.expected) {
if (expected === "error") {
assert.throws(
() => getUint64(view, 0, mode),
new RegExp(
`Mode is IntMode\\.SAFE_NUMBER and value is not a safe integer: 0x${testCase.input.toString(16)}$`,
),
);
continue;
}
assert.deepStrictEqual(getUint64(view, 0, mode), expected);
}
});
}
});
});
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