Enhance error handling and add tests for wiki tools

src/tools/wiki.ts

@@ -27,13 +27,26 @@ function configureWikiTools(
       project: z.string().optional().describe("The project name or ID where the wiki is located. If not provided, the default project will be used."),
     },
     async ({ wikiIdentifier, project }) => {
-      const connection = await connectionProvider();
-      const wikiApi = await connection.getWikiApi();
-      const wiki = await wikiApi.getWiki(wikiIdentifier, project);
-
-      return {
-        content: [{ type: "text", text: JSON.stringify(wiki, null, 2) }],
-      };
+      try {
+        const connection = await connectionProvider();
+        const wikiApi = await connection.getWikiApi();
+        const wiki = await wikiApi.getWiki(wikiIdentifier, project);
+
+        if (!wiki) {
+          return { content: [{ type: "text", text: "No wiki found" }], isError: true };
+        }
+
+        return {
+          content: [{ type: "text", text: JSON.stringify(wiki, null, 2) }],
+        };
+      } catch (error) {
+        const errorMessage = error instanceof Error ? error.message : 'Unknown error occurred';
+
+        return { 
+          content: [{ type: "text", text: `Error fetching wiki: ${errorMessage}` }], 
+          isError: true
+        };
+      }
     }
   );
 
@@ -44,13 +57,26 @@ function configureWikiTools(
       project: z.string().optional().describe("The project name or ID to filter wikis. If not provided, all wikis in the organization will be returned."),
     },
     async ({ project }) => {
-      const connection = await connectionProvider();
-      const wikiApi = await connection.getWikiApi();
-      const wikis = await wikiApi.getAllWikis(project);
-
-      return {
-        content: [{ type: "text", text: JSON.stringify(wikis, null, 2) }],
-      };
+      try {
+        const connection = await connectionProvider();
+        const wikiApi = await connection.getWikiApi();
+        const wikis = await wikiApi.getAllWikis(project);
+
+        if (!wikis) {
+          return { content: [{ type: "text", text: "No wikis found" }], isError: true };
+        }
+
+        return {
+          content: [{ type: "text", text: JSON.stringify(wikis, null, 2) }],
+        };
+      } catch (error) {
+        const errorMessage = error instanceof Error ? error.message : 'Unknown error occurred';
+
+        return { 
+          content: [{ type: "text", text: `Error fetching wikis: ${errorMessage}` }], 
+          isError: true
+        };
+      }
     }
   );
 
@@ -71,24 +97,37 @@ function configureWikiTools(
       continuationToken,
       pageViewsForDays,
     }) => {
-      const connection = await connectionProvider();
-      const wikiApi = await connection.getWikiApi();
-
-      const pagesBatchRequest: WikiPagesBatchRequest = {
-        top,
-        continuationToken,
-        pageViewsForDays,
-      };
-
-      const pages = await wikiApi.getPagesBatch(
-        pagesBatchRequest,
-        project,
-        wikiIdentifier
-      );
-
-      return {
-        content: [{ type: "text", text: JSON.stringify(pages, null, 2) }],
-      };
+      try {
+        const connection = await connectionProvider();
+        const wikiApi = await connection.getWikiApi();
+
+        const pagesBatchRequest: WikiPagesBatchRequest = {
+          top,
+          continuationToken,
+          pageViewsForDays,
+        };
+
+        const pages = await wikiApi.getPagesBatch(
+          pagesBatchRequest,
+          project,
+          wikiIdentifier
+        );
+
+        if (!pages) {
+          return { content: [{ type: "text", text: "No wiki pages found" }], isError: true };
+        }
+
+        return {
+          content: [{ type: "text", text: JSON.stringify(pages, null, 2) }],
+        };
+      } catch (error) {
+        const errorMessage = error instanceof Error ? error.message : 'Unknown error occurred';
+
+        return { 
+          content: [{ type: "text", text: `Error fetching wiki pages: ${errorMessage}` }], 
+          isError: true
+        };
+      }
     }
   );
 
@@ -101,23 +140,36 @@ function configureWikiTools(
       path: z.string().describe("The path of the wiki page to retrieve content for."),
     },
     async ({ wikiIdentifier, project, path }) => {
-      const connection = await connectionProvider();
-      const wikiApi = await connection.getWikiApi();
-
-      const stream = await wikiApi.getPageText(
-        project,
-        wikiIdentifier,
-        path,
-        undefined,
-        undefined,
-        true
-      );
-
-      const content = await streamToString(stream);
-
-      return {
-        content: [{ type: "text", text: JSON.stringify(content, null, 2) }],
-      };
+      try {
+        const connection = await connectionProvider();
+        const wikiApi = await connection.getWikiApi();
+
+        const stream = await wikiApi.getPageText(
+          project,
+          wikiIdentifier,
+          path,
+          undefined,
+          undefined,
+          true
+        );
+
+        if (!stream) {
+          return { content: [{ type: "text", text: "No wiki page content found" }], isError: true };
+        }
+
+        const content = await streamToString(stream);
+
+        return {
+          content: [{ type: "text", text: JSON.stringify(content, null, 2) }],
+        };
+      } catch (error) {
+        const errorMessage = error instanceof Error ? error.message : 'Unknown error occurred';
+
+        return { 
+          content: [{ type: "text", text: `Error fetching wiki page content: ${errorMessage}` }], 
+          isError: true
+        };
+      }
     }
   );
 }