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import {
isError,
fromTwos, toTwos,
getBigInt, getNumber, toBeArray, toBeHex, toQuantity,
} from "../index.js";
describe("Tests Quantity Functions", function() {
const quantities: Array<{ name: string, value: any, expected: string }> = [
{
name: "zero number",
value: 0,
expected: "0x0"
},
{
name: "zero single hex",
value: "0x0",
expected: "0x0"
},
{
name: "zero double hex",
value: "0x00",
expected: "0x0"
},
{
name: "zero array(0)",
value: new Uint8Array([ ]),
expected: "0x0"
},
{
name: "zero array(1)",
value: new Uint8Array([ 0 ]),
expected: "0x0"
},
{
name: "single hex digit",
value: 0x5,
expected: "0x5"
},
{
name: "double hex digit",
value: 0x42,
expected: "0x42"
},
{
name: "big array, odd output",
value: new Uint8Array([ 0x0f, 254, 253, 252 ]),
expected: "0xffefdfc"
},
{
name: "big array, even output",
value: new Uint8Array([ 255, 254, 253, 252 ]),
expected: "0xfffefdfc"
},
];
for (const { name, value, expected } of quantities) {
it(`computes quantity: ${ name }`, function() {
assert.equal(toQuantity(value), expected);
});
}
});
describe("Tests Bad Math Values", function() {
const badBigInts: Array<{ name: string, value: any, error: string }> = [
{
name: "empty string",
value: "",
error: "invalid BigNumberish string"
},
{
name: "non-numeric string",
value: "foobar",
error: "invalid BigNumberish string"
},
{
name: "double negative sign",
value: "--42",
error: "invalid BigNumberish string"
},
{
name: "non-numeric thing",
value: true,
error: "invalid BigNumberish value"
},
];
for (const { name, value, error } of badBigInts) {
it(`correctly fails on bad bigint: ${ name }`, function() {
assert.throws(() => {
const result = getBigInt(value);
console.log(result);
}, (e: any) => {
return (isError(e, "INVALID_ARGUMENT") &&
e.message.startsWith(error));
});
});
}
const badNumbers: Array<{ name: string, value: any, error: string }> = [
{
name: "empty string",
value: "",
error: "invalid numeric string"
},
{
name: "non-numeric string",
value: "foobar",
error: "invalid numeric string"
},
{
name: "double negative sign",
value: "--42",
error: "invalid numeric string"
},
{
name: "non-numeric thing",
value: true,
error: "invalid numeric value"
},
{
name: "too big",
value: Number.MAX_SAFE_INTEGER + 10,
error: "overflow"
},
{
name: "too small",
value: -Number.MAX_SAFE_INTEGER - 10,
error: "overflow"
},
];
for (const { name, value, error } of badNumbers) {
it(`correctly fails on bad numeric: ${ name }`, function() {
assert.throws(() => {
const result = getNumber(value);
console.log(result);
}, (e: any) => {
return (isError(e, "INVALID_ARGUMENT") &&
e.message.startsWith(error));
});
});
}
const badHex: Array<{ name: string, value: any, error: string, width?: number }> = [
{
name: "negative value",
value: -4,
error: "unsigned value cannot be negative"
},
{
name: "width too short",
value: 0x123456,
width: 2,
error: "value exceeds width"
},
];
for (const { name, value, error, width } of badHex) {
it(`correctly fails on bad toBeHex values: ${ name }`, function() {
assert.throws(() => {
const result = toBeHex(value, width);
console.log(result);
}, (e: any) => {
return (isError(e, "NUMERIC_FAULT") && e.fault === "overflow" &&
e.message.startsWith(error));
});
});
}
it(`correctly fails on nad toBeArray values: negative value`, function() {
assert.throws(() => {
const result = toBeArray(-4);
console.log(result);
}, (e: any) => {
return (isError(e, "NUMERIC_FAULT") && e.fault === "overflow" &&
e.message.startsWith("unsigned value cannot be negative"));
});
});
});
describe("Tests Twos Compliemnts Functions", function() {
const tests = [
{ width: 8, value: 0, twos: 0 },
{ width: 8, value: 1, twos: 1 },
{ width: 8, value: -1, twos: 0xff },
{ width: 8, value: 127, twos: 127 },
{ width: 8, value: -128, twos: 0x80 },
];
for (const { twos, width, value } of tests) {
it(`computes twos compliment values: ${ value }[${ width } bits]`, function() {
const result = toTwos(value, width);
assert.equal(result, twos);
});
}
for (const { twos, width, value } of tests) {
it(`computes values from twos compliment: ${ value }[${ width } bits]`, function() {
const result = fromTwos(twos, width);
assert.equal(result, value);
});
}
});
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