_test_json_stringify.ts

import { TestStructure } from "../helpers/TestStructure";
import { primitive_equal_to } from "../helpers/primitive_equal_to";

export const _test_json_stringify =
    (name: string) =>
    <T>(factory: TestStructure<T>) =>
    (stringify: (input: T) => string) =>
    () => {
        const data: T = factory.generate();
        const optimized: string = stringify(data);

        if (predicate(data, optimized) === false)
            throw new Error(
                `Bug on typia.json.stringify(): failed to understand the ${name} type.`,
            );
    };

function predicate<T>(data: any, optimized: string): boolean {
    // SPECIAL CASE, UNDEFINED
    if (
        optimized === undefined &&
        (data === undefined ||
            typeof data === "function" ||
            (data.toJSON && data.toJSON() === undefined))
    )
        return true;

    // DO COMPARE
    const parsed: T = JSON.parse(optimized);
    const expected: T = JSON.parse(JSON.stringify(data));

    return primitive_equal_to(parsed, expected);
}