test: test backoff by mocking setTimeout

src/eventHandlers/checkSuite/index.spec.ts

@@ -7,6 +7,7 @@ import { getOctokit } from '@actions/github';
 import { OK } from 'http-status-codes';
 import * as nock from 'nock';
 
+import { useSetTimeoutImmediateInvocation } from '../../../test/utilities';
 import { mergePullRequestMutation } from '../../graphql/mutations';
 import { AllowedMergeMethods } from '../../utilities/inputParsers';
 import * as log from '../../utilities/log';
@@ -388,6 +389,8 @@ describe('check Suite event handler', (): void => {
     const logDebugSpy = jest.spyOn(log, 'logDebug');
     const logInfoSpy = jest.spyOn(log, 'logInfo');
 
+    useSetTimeoutImmediateInvocation();
+
     try {
       await checkSuiteHandle(octokit, 'dependabot-preview[bot]', 2);
     } catch (error) {
@@ -399,8 +402,8 @@ describe('check Suite event handler', (): void => {
       expect(logInfoSpy.mock.calls[1][0]).toStrictEqual(
         'An error ocurred while merging the Pull Request. This is usually caused by the base branch being out of sync with the target branch. In this case, the base branch must be rebased. Some tools, such as Dependabot, do that automatically.',
       );
-      expect(logInfoSpy.mock.calls[2][0]).toStrictEqual('Retrying in 100...');
-      expect(logInfoSpy.mock.calls[4][0]).toStrictEqual('Retrying in 400...');
+      expect(logInfoSpy.mock.calls[2][0]).toStrictEqual('Retrying in 1000...');
+      expect(logInfoSpy.mock.calls[4][0]).toStrictEqual('Retrying in 4000...');
     }
   });
 

src/eventHandlers/pullRequest/index.spec.ts

@@ -7,6 +7,7 @@ import { getOctokit } from '@actions/github';
 import { OK } from 'http-status-codes';
 import * as nock from 'nock';
 
+import { useSetTimeoutImmediateInvocation } from '../../../test/utilities';
 import { mergePullRequestMutation } from '../../graphql/mutations';
 import { AllowedMergeMethods } from '../../utilities/inputParsers';
 import * as log from '../../utilities/log';
@@ -66,10 +67,7 @@ describe('pull request event handler', (): void => {
       });
     nock('https://api.github.com').post('/graphql').reply(OK);
 
-    await pullRequestHandle(octokit, 'dependabot-preview[bot]', {
-      maximumRetries: 2,
-      minimumWaitTime: 100,
-    });
+    await pullRequestHandle(octokit, 'dependabot-preview[bot]', 2);
 
     expect(warningSpy).not.toHaveBeenCalled();
   });
@@ -81,10 +79,7 @@ describe('pull request event handler', (): void => {
       data: null,
     });
 
-    await pullRequestHandle(octokit, 'dependabot-preview[bot]', {
-      maximumRetries: 2,
-      minimumWaitTime: 100,
-    });
+    await pullRequestHandle(octokit, 'dependabot-preview[bot]', 2);
   });
 
   it('does not approve an already approved pull request', async (): Promise<
@@ -136,10 +131,7 @@ describe('pull request event handler', (): void => {
       })
       .reply(OK);
 
-    await pullRequestHandle(octokit, 'dependabot-preview[bot]', {
-      maximumRetries: 2,
-      minimumWaitTime: 100,
-    });
+    await pullRequestHandle(octokit, 'dependabot-preview[bot]', 2);
   });
 
   it('retries up to two times before failing', async (): Promise<void> => {
@@ -189,6 +181,8 @@ describe('pull request event handler', (): void => {
     const logDebugSpy = jest.spyOn(log, 'logDebug');
     const logInfoSpy = jest.spyOn(log, 'logInfo');
 
+    useSetTimeoutImmediateInvocation();
+
     try {
       await pullRequestHandle(octokit, 'dependabot-preview[bot]', 2);
     } catch (error) {
@@ -200,8 +194,8 @@ describe('pull request event handler', (): void => {
       expect(logInfoSpy.mock.calls[1][0]).toStrictEqual(
         'An error ocurred while merging the Pull Request. This is usually caused by the base branch being out of sync with the target branch. In this case, the base branch must be rebased. Some tools, such as Dependabot, do that automatically.',
       );
-      expect(logInfoSpy.mock.calls[2][0]).toStrictEqual('Retrying in 100...');
-      expect(logInfoSpy.mock.calls[4][0]).toStrictEqual('Retrying in 400...');
+      expect(logInfoSpy.mock.calls[2][0]).toStrictEqual('Retrying in 1000...');
+      expect(logInfoSpy.mock.calls[4][0]).toStrictEqual('Retrying in 4000...');
     }
   });
 

src/eventHandlers/push/index.spec.ts

@@ -7,6 +7,7 @@ import { getOctokit } from '@actions/github';
 import { OK } from 'http-status-codes';
 import * as nock from 'nock';
 
+import { useSetTimeoutImmediateInvocation } from '../../../test/utilities';
 import { mergePullRequestMutation } from '../../graphql/mutations';
 import { AllowedMergeMethods } from '../../utilities/inputParsers';
 import * as log from '../../utilities/log';
@@ -300,6 +301,8 @@ describe('push event handler', (): void => {
     const logDebugSpy = jest.spyOn(log, 'logDebug');
     const logInfoSpy = jest.spyOn(log, 'logInfo');
 
+    useSetTimeoutImmediateInvocation();
+
     try {
       await pushHandle(octokit, 'dependabot-preview[bot]', 2);
     } catch (error) {
@@ -311,8 +314,8 @@ describe('push event handler', (): void => {
       expect(logInfoSpy.mock.calls[1][0]).toStrictEqual(
         'An error ocurred while merging the Pull Request. This is usually caused by the base branch being out of sync with the target branch. In this case, the base branch must be rebased. Some tools, such as Dependabot, do that automatically.',
       );
-      expect(logInfoSpy.mock.calls[2][0]).toStrictEqual('Retrying in 100...');
-      expect(logInfoSpy.mock.calls[4][0]).toStrictEqual('Retrying in 400...');
+      expect(logInfoSpy.mock.calls[2][0]).toStrictEqual('Retrying in 1000...');
+      expect(logInfoSpy.mock.calls[4][0]).toStrictEqual('Retrying in 4000...');
     }
   });
 

test/utilities.ts

@@ -0,0 +1,10 @@
+export const useSetTimeoutImmediateInvocation = (): jest.SpyInstance<
+  NodeJS.Timeout,
+  [(...args: unknown[]) => void, number, ...unknown[]]
+> =>
+  jest
+    .spyOn(global, 'setTimeout')
+    .mockImplementation(
+      (callback: () => void): NodeJS.Timeout =>
+        (callback() as unknown) as NodeJS.Timeout,
+    );