chore: improve pool branch test coverage

Author: galargh

lambdas/functions/control-plane/src/pool/pool.test.ts

@@ -268,6 +268,7 @@ describe('Test simple pool.', () => {
     });
 
     it('Should not top up if pool size is invalid.', async () => {
+      process.env.RUNNER_LABELS = undefined;
       await expect(await adjust({ poolSize: -2 })).resolves;
       expect(createRunners).not.toHaveBeenCalled();
     });
@@ -369,6 +370,10 @@ describe('Test simple pool.', () => {
           status: 'queued',
           labels: [...LABELS, 'label3'],
         },
+        {
+          status: 'queued',
+          labels: [],
+        },
       ]);
       await expect(await adjust({ poolSize: -1 })).resolves;
       expect(createRunners).not.toHaveBeenCalled();

lambdas/functions/control-plane/src/pool/pool.ts

@@ -69,8 +69,6 @@ export async function adjust(event: PoolEvent): Promise<void> {
     const ghAuth = await createGithubInstallationAuth(installationId, ghesApiUrl);
     const githubInstallationClient = await createOctoClient(ghAuth.token, ghesApiUrl);
 
-    githubInstallationClient.paginate;
-
     // Get statusses of runners registed in GitHub
     const runnerStatusses = await getGitHubRegisteredRunnnerStatusses(
       githubInstallationClient,