import assert from "node:assert";

/**
 * Asserts that two numbers are equal when rounded to a specified precision.
 */
export function assertRoundedEqual(
    value: number | undefined,
    expected: number,
    precision: number = 5,
    message?: string,
): void {
    if (value === undefined) {
        throw new Error("Value is undefined");
    }

    const factor = Math.pow(10, precision);
    const roundedValue = Math.round(value * factor) / factor;
    const roundedExpected = Math.round(expected * factor) / factor;

    assert.strictEqual(
        roundedValue,
        roundedExpected,
        message ||
            `Expected ${roundedValue} to be equal to ${roundedExpected} when rounded to ${precision} decimal places.`,
    );
}