adriengibrat/ts-custom-error

type AnyConstructor = {
    new (...args): any
}

export const checkProtoChain = (
    contructor: AnyConstructor,
    ...chain: AnyConstructor[]
) => {
    const error = new contructor()
    expect(error).toBeInstanceOf(contructor)
    chain.forEach(type => expect(error).toBeInstanceOf(type))
}

type CheckedProperties = {
    [key: string]: any
    name: string
    message: string
}
export const checkProperties = (error: any, properties: CheckedProperties) => {
    Object.keys(properties).forEach(property =>
        expect(error[property]).toBe(properties[property]),
    )
    const stackPattern = properties.message
        ? `${properties.name}: ${properties.message}`
        : new RegExp(`^${properties.name}\\b`)
    expect(error.stack).toMatch(stackPattern)
}