Retrieve all PR reviews when checking approvals (#190)

The results from octokit.pulls.listReviews are paginated; if
there were more than 30 "reviews" (note that this includes
standalone comments on the PR) before the requested number
of approvals, the PR would be considered unapproved and wouldn't
get merged.

By using the `octokit.paginate` helper we make sure to retrieve
all reviews.

Author: jonathanperret

dist/index.js

@@ -468,7 +468,7 @@ async function fetchApprovalReviewCount(context, pullRequest) {
   }
 
   logger.debug("Getting reviews for", number, "...");
-  let { data: reviews } = await octokit.pulls.listReviews({
+  const reviews = await octokit.paginate(octokit.pulls.listReviews, {
     owner: pullRequest.base.repo.owner.login,
     repo: pullRequest.base.repo.name,
     pull_number: number
@@ -22095,7 +22095,7 @@ module.exports = JSON.parse('[[[0,44],"disallowed_STD3_valid"],[[45,46],"valid"]
 /***/ ((module) => {
 
 "use strict";
-module.exports = JSON.parse('{"name":"automerge-action","version":"0.15.1","description":"GitHub action to automatically merge pull requests","main":"lib/api.js","author":"Pascal","license":"MIT","private":true,"bin":{"automerge-action":"./bin/automerge.js"},"scripts":{"test":"jest","it":"node it/it.js","lint":"prettier -l lib/** test/** && eslint .","compile":"ncc build bin/automerge.js --license LICENSE -o dist","prepublish":"yarn lint && yarn test && yarn compile"},"dependencies":{"@actions/core":"^1.6.0","@octokit/rest":"^18.12.0","argparse":"^2.0.1","fs-extra":"^10.0.1","object-resolve-path":"^1.1.1","tmp":"^0.2.1"},"devDependencies":{"@vercel/ncc":"^0.33.3","dotenv":"^16.0.0","eslint":"^8.11.0","eslint-plugin-jest":"^26.1.3","jest":"^27.5.1","prettier":"^2.6.0"},"prettier":{"trailingComma":"none","arrowParens":"avoid"}}');
+module.exports = JSON.parse('{"name":"automerge-action","version":"0.15.2","description":"GitHub action to automatically merge pull requests","main":"lib/api.js","author":"Pascal","license":"MIT","private":true,"bin":{"automerge-action":"./bin/automerge.js"},"scripts":{"test":"jest","it":"node it/it.js","lint":"prettier -l lib/** test/** && eslint .","compile":"ncc build bin/automerge.js --license LICENSE -o dist","prepublish":"yarn lint && yarn test && yarn compile"},"dependencies":{"@actions/core":"^1.6.0","@octokit/rest":"^18.12.0","argparse":"^2.0.1","fs-extra":"^10.0.1","object-resolve-path":"^1.1.1","tmp":"^0.2.1"},"devDependencies":{"@vercel/ncc":"^0.33.3","dotenv":"^16.0.0","eslint":"^8.11.0","eslint-plugin-jest":"^26.1.3","jest":"^27.5.1","prettier":"^2.6.0"},"prettier":{"trailingComma":"none","arrowParens":"avoid"}}');
 
 /***/ })
 

lib/api.js

@@ -461,7 +461,7 @@ async function fetchApprovalReviewCount(context, pullRequest) {
   }
 
   logger.debug("Getting reviews for", number, "...");
-  let { data: reviews } = await octokit.pulls.listReviews({
+  const reviews = await octokit.paginate(octokit.pulls.listReviews, {
     owner: pullRequest.base.repo.owner.login,
     repo: pullRequest.base.repo.name,
     pull_number: number

test/api.test.js

@@ -48,8 +48,9 @@ test("only merge PRs with required approvals", async () => {
     pulls: {
       list: jest.fn(() => ({ data: [pr] })),
       merge: jest.fn(() => (merged = true)),
-      listReviews: jest.fn(() => ({ data: [] }))
-    }
+      listReviews: Symbol("listReviews")
+    },
+    paginate: jest.fn(() => [])
   };
 
   const event = {
@@ -63,24 +64,20 @@ test("only merge PRs with required approvals", async () => {
   expect(merged).toEqual(false); // if there's no approval, it should fail
 
   merged = false;
-  octokit.pulls.listReviews.mockReturnValueOnce({
-    data: [
-      { state: "APPROVED", user: { login: "approval_user" } },
-      { state: "APPROVED", user: { login: "approval_user2" } }
-    ]
-  });
+  octokit.paginate.mockReturnValueOnce([
+    { state: "APPROVED", user: { login: "approval_user" } },
+    { state: "APPROVED", user: { login: "approval_user2" } }
+  ]);
 
   // WHEN
   await api.executeGitHubAction({ config, octokit }, "check_suite", event);
   expect(merged).toEqual(true); // if there are two approvals, it should succeed
 
   merged = false;
-  octokit.pulls.listReviews.mockReturnValueOnce({
-    data: [
-      { state: "APPROVED", user: { login: "approval_user" } },
-      { state: "APPROVED", user: { login: "approval_user" } }
-    ]
-  });
+  octokit.paginate.mockReturnValueOnce([
+    { state: "APPROVED", user: { login: "approval_user" } },
+    { state: "APPROVED", user: { login: "approval_user" } }
+  ]);
 
   // WHEN a user has given
   await api.executeGitHubAction({ config, octokit }, "check_suite", event);