cover more retryable errors for quote resolution

packages/backend/test/unit/misc/is-retryable-error.ts

@@ -0,0 +1,73 @@
+/*
+ * SPDX-FileCopyrightText: hazelnoot and other Sharkey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { UnrecoverableError } from 'bullmq';
+import { AbortError } from 'node-fetch';
+import { isRetryableError } from '@/misc/is-retryable-error.js';
+import { StatusError } from '@/misc/status-error.js';
+import { IdentifiableError } from '@/misc/identifiable-error.js';
+
+describe(isRetryableError, () => {
+	it('should return true for retryable StatusError', () => {
+		const error = new StatusError('test error', 500);
+		const result = isRetryableError(error);
+		expect(result).toBeTruthy();
+	});
+
+	it('should return false for permanent StatusError', () => {
+		const error = new StatusError('test error', 400);
+		const result = isRetryableError(error);
+		expect(result).toBeFalsy();
+	});
+
+	it('should return true for retryable IdentifiableError', () => {
+		const error = new IdentifiableError('id', 'message', true);
+		const result = isRetryableError(error);
+		expect(result).toBeTruthy();
+	});
+
+	it('should return false for permanent StatusError', () => {
+		const error = new IdentifiableError('id', 'message', false);
+		const result = isRetryableError(error);
+		expect(result).toBeFalsy();
+	});
+
+	it('should return false for UnrecoverableError', () => {
+		const error = new UnrecoverableError();
+		const result = isRetryableError(error);
+		expect(result).toBeFalsy();
+	});
+
+	it('should return true for typed AbortError', () => {
+		const error = new AbortError();
+		const result = isRetryableError(error);
+		expect(result).toBeTruthy();
+	});
+
+	it('should return true for named AbortError', () => {
+		const error = new Error();
+		error.name = 'AbortError';
+
+		const result = isRetryableError(error);
+
+		expect(result).toBeTruthy();
+	});
+
+	const nonErrorInputs = [
+		[null, 'null'],
+		[undefined, 'undefined'],
+		[0, 'number'],
+		['string', 'string'],
+		[true, 'boolean'],
+		[[], 'array'],
+		[{}, 'object'],
+	];
+	for (const [input, label] of nonErrorInputs) {
+		it(`should return true for ${label} input`, () => {
+			const result = isRetryableError(input);
+			expect(result).toBeTruthy();
+		});
+	}
+});