feat: add GHPullRequest.markReadyForReview for draft PRs

src/main/java/org/kohsuke/github/GHPullRequest.java

@@ -539,6 +539,30 @@ public PagedIterable<GHPullRequestReview> listReviews() {
                 .toIterable(GHPullRequestReview[].class, item -> item.wrapUp(this));
     }
 
+    /**
+     * Converts a draft pull request to ready for review.
+     *
+     * @throws IOException
+     *             the io exception
+     * @throws IllegalStateException
+     *             if the pull request is not a draft
+     */
+    public void markReadyForReview() throws IOException {
+        if (!draft) {
+            throw new IllegalStateException("Pull request is not a draft");
+        }
+
+        StringBuilder inputBuilder = new StringBuilder();
+        addParameter(inputBuilder, "pullRequestId", this.getNodeId());
+
+        String graphqlBody = "mutation MarkReadyForReview { markPullRequestReadyForReview(input: {" + inputBuilder
+                + "}) { pullRequest { id } } }";
+
+        root().createGraphQLRequest(graphqlBody).sendGraphQL();
+
+        refresh();
+    }
+
     /**
      * Merge this pull request.
      *

src/test/java/org/kohsuke/github/GHPullRequestTest.java

@@ -416,6 +416,48 @@ public void getUserTest() throws IOException {
         }
     }
 
+    /**
+     * Test marking a draft pull request as ready for review.
+     *
+     * @throws Exception
+     *             the exception
+     */
+    @Test
+    public void markReadyForReview() throws Exception {
+        // Create a draft PR first
+        GHPullRequest p = getRepository()
+                .createPullRequest("markReadyForReview", "test/stable", "main", "## test", false, true);
+        assertThat(p.isDraft(), is(true));
+
+        // Mark it ready for review
+        p.markReadyForReview();
+
+        // Verify it's no longer a draft
+        assertThat(p.isDraft(), is(false));
+    }
+
+    /**
+     * Marking a non-draft pull request as ready for review throws an exception.
+     *
+     * @throws Exception
+     *             the exception
+     */
+    @Test
+    public void markReadyForReviewNonDraft() throws Exception {
+        // Create a non-draft PR
+        GHPullRequest p = getRepository()
+                .createPullRequest("markReadyForReviewNonDraft", "test/stable", "main", "## test");
+        assertThat(p.isDraft(), is(false));
+
+        // Attempting to mark a non-draft PR as ready should throw
+        try {
+            p.markReadyForReview();
+            fail("Expected IllegalStateException");
+        } catch (IllegalStateException e) {
+            assertThat(e.getMessage(), equalTo("Pull request is not a draft"));
+        }
+    }
+
     /**
      * Merge commit SHA.
      *

src/test/resources/org/kohsuke/github/GHPullRequestTest/wiremock/markReadyForReview/__files/1-user.json

@@ -0,0 +1,36 @@
+{
+  "login": "Anonycoders",
+  "id": 40047636,
+  "node_id": "MDQ6VXNlcjQwMDQ3NjM2",
+  "avatar_url": "https://avatars.githubusercontent.com/u/40047636?v=4",
+  "gravatar_id": "",
+  "url": "https://api.github.com/users/Anonycoders",
+  "html_url": "https://github.com/Anonycoders",
+  "followers_url": "https://api.github.com/users/Anonycoders/followers",
+  "following_url": "https://api.github.com/users/Anonycoders/following{/other_user}",
+  "gists_url": "https://api.github.com/users/Anonycoders/gists{/gist_id}",
+  "starred_url": "https://api.github.com/users/Anonycoders/starred{/owner}{/repo}",
+  "subscriptions_url": "https://api.github.com/users/Anonycoders/subscriptions",
+  "organizations_url": "https://api.github.com/users/Anonycoders/orgs",
+  "repos_url": "https://api.github.com/users/Anonycoders/repos",
+  "events_url": "https://api.github.com/users/Anonycoders/events{/privacy}",
+  "received_events_url": "https://api.github.com/users/Anonycoders/received_events",
+  "type": "User",
+  "user_view_type": "public",
+  "site_admin": false,
+  "name": "Sorena Sarabadani",
+  "company": "@Adevinta",
+  "blog": "",
+  "location": "Berlin, Germany",
+  "email": "sorena.sarabadani@gmail.com",
+  "hireable": null,
+  "bio": "Ex-Shopifyer - Adevinta/Kleinanzeigen",
+  "twitter_username": "sorena_s",
+  "notification_email": "sorena.sarabadani@gmail.com",
+  "public_repos": 12,
+  "public_gists": 0,
+  "followers": 38,
+  "following": 4,
+  "created_at": "2018-06-08T02:07:15Z",
+  "updated_at": "2026-01-24T22:07:12Z"
+}

src/test/resources/org/kohsuke/github/GHPullRequestTest/wiremock/markReadyForReview/__files/2-orgs_hub4j-test-org.json

@@ -0,0 +1,76 @@
+{
+  "login": "hub4j-test-org",
+  "id": 7544739,
+  "node_id": "MDEyOk9yZ2FuaXphdGlvbjc1NDQ3Mzk=",
+  "url": "https://api.github.com/orgs/hub4j-test-org",
+  "repos_url": "https://api.github.com/orgs/hub4j-test-org/repos",
+  "events_url": "https://api.github.com/orgs/hub4j-test-org/events",
+  "hooks_url": "https://api.github.com/orgs/hub4j-test-org/hooks",
+  "issues_url": "https://api.github.com/orgs/hub4j-test-org/issues",
+  "members_url": "https://api.github.com/orgs/hub4j-test-org/members{/member}",
+  "public_members_url": "https://api.github.com/orgs/hub4j-test-org/public_members{/member}",
+  "avatar_url": "https://avatars.githubusercontent.com/u/7544739?v=4",
+  "description": "Hub4j Test Org Description (this could be null or blank too)",
+  "name": "Hub4j Test Org Name (this could be null or blank too)",
+  "company": null,
+  "blog": "https://hub4j.url.io/could/be/null",
+  "location": "Hub4j Test Org Location (this could be null or blank too)",
+  "email": "hub4jtestorgemail@could.be.null.com",
+  "twitter_username": null,
+  "is_verified": false,
+  "has_organization_projects": true,
+  "has_repository_projects": true,
+  "public_repos": 27,
+  "public_gists": 0,
+  "followers": 2,
+  "following": 0,
+  "html_url": "https://github.com/hub4j-test-org",
+  "created_at": "2014-05-10T19:39:11Z",
+  "updated_at": "2025-08-05T00:53:03Z",
+  "archived_at": null,
+  "type": "Organization",
+  "total_private_repos": 8,
+  "owned_private_repos": 8,
+  "private_gists": 0,
+  "disk_usage": 12076,
+  "collaborators": 1,
+  "billing_email": "kk@kohsuke.org",
+  "default_repository_permission": "none",
+  "members_can_create_repositories": false,
+  "two_factor_requirement_enabled": false,
+  "members_allowed_repository_creation_type": "none",
+  "members_can_create_public_repositories": false,
+  "members_can_create_private_repositories": false,
+  "members_can_create_internal_repositories": false,
+  "members_can_create_pages": true,
+  "members_can_fork_private_repositories": false,
+  "web_commit_signoff_required": false,
+  "deploy_keys_enabled_for_repositories": false,
+  "members_can_delete_repositories": true,
+  "members_can_change_repo_visibility": true,
+  "members_can_invite_outside_collaborators": true,
+  "members_can_delete_issues": false,
+  "display_commenter_full_name_setting_enabled": false,
+  "readers_can_create_discussions": true,
+  "members_can_create_teams": true,
+  "members_can_view_dependency_insights": true,
+  "default_repository_branch": "main",
+  "members_can_create_public_pages": true,
+  "members_can_create_private_pages": true,
+  "plan": {
+    "name": "free",
+    "space": 976562499,
+    "private_repos": 10000,
+    "filled_seats": 53,
+    "seats": 3
+  },
+  "advanced_security_enabled_for_new_repositories": false,
+  "dependabot_alerts_enabled_for_new_repositories": false,
+  "dependabot_security_updates_enabled_for_new_repositories": false,
+  "dependency_graph_enabled_for_new_repositories": false,
+  "secret_scanning_enabled_for_new_repositories": false,
+  "secret_scanning_push_protection_enabled_for_new_repositories": false,
+  "secret_scanning_push_protection_custom_link_enabled": false,
+  "secret_scanning_push_protection_custom_link": null,
+  "secret_scanning_validity_checks_enabled": false
+}