Issue 1597: Tested and implemented GHRepository.listCodeownersErrors()

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

@@ -0,0 +1,77 @@
+package org.kohsuke.github;
+
+/**
+ * Represents an error in a {@code CODEOWNERS} file. See <a href=
+ * "https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners">the
+ * relevant documentation</a>.
+ *
+ * @author Michael Grant
+ */
+public class GHCodeownersError {
+    private int line, column;
+
+    private String kind, source, suggestion, message, path;
+
+    /**
+     * Gets line.
+     *
+     * @return the line
+     */
+    public int getLine() {
+        return line;
+    }
+
+    /**
+     * Gets column.
+     *
+     * @return the column
+     */
+    public int getColumn() {
+        return column;
+    }
+
+    /**
+     * Gets kind.
+     *
+     * @return the kind
+     */
+    public String getKind() {
+        return kind;
+    }
+
+    /**
+     * Gets source.
+     *
+     * @return the source
+     */
+    public String getSource() {
+        return source;
+    }
+
+    /**
+     * Gets suggestion.
+     *
+     * @return the suggestion
+     */
+    public String getSuggestion() {
+        return suggestion;
+    }
+
+    /**
+     * Gets message.
+     *
+     * @return the message
+     */
+    public String getMessage() {
+        return message;
+    }
+
+    /**
+     * Gets path.
+     *
+     * @return the path
+     */
+    public String getPath() {
+        return path;
+    }
+}

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

@@ -2956,6 +2956,25 @@ public GHSubscription getSubscription() throws IOException {
         }
     }
 
+    // Only used within listCodeownersErrors().
+    private static class GHCodeownersErrors {
+        public List<GHCodeownersError> errors;
+    }
+
+    /**
+     * List errors in the {@code CODEOWNERS} file. Note that GitHub skips lines with incorrect syntax; these are
+     * reported in the web interface, but not in the API call which this library uses.
+     *
+     * @return the list of errors
+     * @throws IOException
+     *             the io exception
+     */
+    public List<GHCodeownersError> listCodeownersErrors() throws IOException {
+        return root().createRequest()
+                .withUrlPath(getApiTailUrl("codeowners/errors"))
+                .fetch(GHCodeownersErrors.class).errors;
+    }
+
     /**
      * List contributors paged iterable.
      *

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

@@ -0,0 +1,55 @@
+package org.kohsuke.github;
+
+import org.junit.Test;
+
+import java.io.IOException;
+import java.util.List;
+
+import static org.hamcrest.Matchers.*;
+
+/**
+ * Test class for listing errors in CODEOWNERS files.
+ *
+ * @author Michael Grant
+ */
+public class GHCodeownersErrorTest extends AbstractGitHubWireMockTest {
+
+    /**
+     * Gets the {@code CODEOWNERS} errors.
+     *
+     * @throws IOException
+     *             the exception
+     */
+    @Test
+    public void testGetCodeownersErrors() throws IOException {
+        final GHRepository repo = getRepository(gitHub);
+        final List<GHCodeownersError> codeownersErrors = repo.listCodeownersErrors();
+        assertThat(codeownersErrors.size(), is(1));
+        final GHCodeownersError firstError = codeownersErrors.get(0);
+        assertThat(firstError.getLine(), is(1));
+        assertThat(firstError.getColumn(), is(3));
+        assertThat(firstError.getKind(), is("Unknown owner"));
+        assertThat(firstError.getSource(),
+                is("* @nonexistent-user # Deliberate error to test response to repo.listCodeownersErrors()\n"));
+        assertThat(firstError.getSuggestion(),
+                is("make sure @nonexistent-user exists and has write access to the repository"));
+        assertThat(firstError.getMessage(),
+                is("Unknown owner on line 1: make sure @nonexistent-user exists and has write access to the repository\n\n  * @nonexistent-user # Deliberate error to test response to repo.listCodeownersErrors()\n    ^"));
+        assertThat(firstError.getPath(), is(".github/CODEOWNERS"));
+    }
+
+    /**
+     * Gets the repository.
+     *
+     * @return the repository
+     * @throws IOException
+     *             Signals that an I/O exception has occurred.
+     */
+    protected GHRepository getRepository() throws IOException {
+        return getRepository(gitHub);
+    }
+
+    private GHRepository getRepository(GitHub gitHub) throws IOException {
+        return gitHub.getOrganization(GITHUB_API_TEST_ORG).getRepository("github-api");
+    }
+}

src/test/resources/org/kohsuke/github/GHCodeownersErrorTest/wiremock/testGetCodeownersErrors/__files/orgs_hub4j-test-org-1.json

@@ -0,0 +1,31 @@
+{
+  "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": 54,
+  "public_gists": 0,
+  "followers": 1,
+  "following": 0,
+  "html_url": "https://github.com/hub4j-test-org",
+  "created_at": "2014-05-10T19:39:11Z",
+  "updated_at": "2020-06-04T05:56:10Z",
+  "type": "Organization"
+}