first commit

packages/cli/test/integration/shared/retry-until.ts

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+/**
+ * Retries the given assertion until it passes or the timeout is reached
+ *
+ * @example
+ * await retryUntil(
+ *   () => expect(service.someState).toBe(true)
+ * );
+ */
+export const retryUntil = async <T>(
+	assertion: () => Promise<T> | T,
+	{ intervalMs = 200, timeoutMs = 5000 } = {},
+): Promise<T> => {
+	return await new Promise<T>((resolve, reject) => {
+		const startTime = Date.now();
+
+		const tryAgain = () => {
+			setTimeout(async () => {
+				try {
+					resolve(await assertion());
+				} catch (error) {
+					if (Date.now() - startTime > timeoutMs) {
+						reject(error);
+					} else {
+						tryAgain();
+					}
+				}
+			}, intervalMs);
+		};
+
+		tryAgain();
+	});
+};