Method poll

test/automation/src/code.ts:353–387

(
		fn: () => Promise<T>,
		acceptFn: (result: T) => boolean,
		timeoutMessage: string,
		retryCount = 200,
		retryInterval = 100 // millis
	)

	}

	private async poll<T>(
		fn: () => Promise<T>,
		acceptFn: (result: T) => boolean,
		timeoutMessage: string,
		retryCount = 200,
		retryInterval = 100 // millis
	): Promise<T> {
		let trial = 1;
		let lastError: string = '';

		while (true) {
			if (trial > retryCount) {
				this.logger.log('Timeout!');
				this.logger.log(lastError);
				this.logger.log(`Timeout: ${timeoutMessage} after ${(retryCount * retryInterval) / 1000} seconds.`);

				throw new Error(`Timeout: ${timeoutMessage} after ${(retryCount * retryInterval) / 1000} seconds.`);
			}

			let result;
			try {
				result = await fn();
				if (acceptFn(result)) {
					return result;
				} else {
					lastError = 'Did not pass accept function';
				}
			} catch (e: any) {
				lastError = Array.isArray(e.stack) ? e.stack.join(os.EOL) : e.stack;
			}

			await this.wait(retryInterval);
			trial++;
		}
	}
}

export function findElement(element: IElement, fn: (element: IElement) => boolean): IElement | null {