refactor and add tests for retry options

__test__/get-retry-options.test.ts

@@ -0,0 +1,70 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
+
+import {getRetryOptions} from '../src/retry-options'
+
+describe('getRequestOptions', () => {
+  test('retries disabled if retries == 0', async () => {
+    const [retryOptions, requestOptions] = getRetryOptions(0, 8, [
+      400,
+      500,
+      502
+    ])
+
+    expect(retryOptions.enabled).toBe(false)
+    expect(retryOptions.doNotRetry).toBeFalsy()
+
+    expect(requestOptions.retries).toBeFalsy()
+  })
+
+  test('properties set if retries > 0', async () => {
+    const [retryOptions, requestOptions] = getRetryOptions(1, 8, [
+      400,
+      500,
+      502
+    ])
+
+    expect(retryOptions.enabled).toBe(true)
+    expect(retryOptions.doNotRetry).toEqual([400, 500, 502])
+
+    expect(requestOptions.retries).toEqual(1)
+    expect(requestOptions.retryAfter).toEqual(8)
+  })
+
+  test('properties set if retries > 0', async () => {
+    const [retryOptions, requestOptions] = getRetryOptions(1, 8, [
+      400,
+      500,
+      502
+    ])
+
+    expect(retryOptions.enabled).toBe(true)
+    expect(retryOptions.doNotRetry).toEqual([400, 500, 502])
+
+    expect(requestOptions.retries).toEqual(1)
+    expect(requestOptions.retryAfter).toEqual(8)
+  })
+
+  test('retryAfter can be set to zero', async () => {
+    const [retryOptions, requestOptions] = getRetryOptions(1, 0, [
+      400,
+      500,
+      502
+    ])
+
+    expect(retryOptions.enabled).toBe(true)
+    expect(retryOptions.doNotRetry).toEqual([400, 500, 502])
+
+    expect(requestOptions.retries).toEqual(1)
+    expect(requestOptions.retryAfter).toEqual(0)
+  })
+
+  test('retryOptions.doNotRetry not set if doNotRetry isEmpty', async () => {
+    const [retryOptions, requestOptions] = getRetryOptions(1, 0, [])
+
+    expect(retryOptions.enabled).toBe(true)
+    expect(retryOptions.doNotRetry).toBeUndefined()
+
+    expect(requestOptions.retries).toEqual(1)
+    expect(requestOptions.retryAfter).toEqual(0)
+  })
+})