diff --git a/.assets/sample.idl b/.assets/sample.idl
new file mode 100644
index 0000000..5c72c95
--- /dev/null
+++ b/.assets/sample.idl
@@ -0,0 +1,115 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Use the <code>chrome.webrtcLoggingPrivate</code> API to control diagnostic
+// WebRTC logging.
+namespace webrtcLoggingPrivate {
+  dictionary MetaDataEntry {
+    // The meta data entry key.
+    DOMString key;
+
+    // The meta data entry value.
+    DOMString value;
+  };
+
+  dictionary UploadResult {
+    // The report ID for the uploaded log. Will be empty if not successful.
+    DOMString reportId;
+  };
+
+  dictionary RequestInfo {
+    // The tab identifier from the chrome.tabs API, if the request is from a
+    // tab.
+    long? tabId;
+
+    // The guest process id for the requester, if the request is from a
+    // webview.
+    long? guestProcessId;
+  };
+
+  callback GenericDoneCallback = void ();
+  callback UploadDoneCallback = void (UploadResult result);
+
+  interface Functions {
+    // For all functions, |request| determines which render process to apply
+    // the operation on. |request| identifies the requesting process.
+    // |securityOrigin| is the security origin for the tab identified by |tabId|
+    // and is used for verifying that the tab is the correct one and has not
+    // been navigated away from.
+
+    // Sets additional custom meta data that will be uploaded along with the
+    // log. |metaData| is a dictionary of the metadata (key, value).
+    static void setMetaData(RequestInfo request,
+                            DOMString securityOrigin,
+                            MetaDataEntry[] metaData,
+                            GenericDoneCallback callback);
+
+    // Starts logging. If logging has already been started for this render
+    // process, the call will be ignored. |appSessionId| is the unique session
+    // ID which will be added to the log.
+    static void start(RequestInfo request,
+                      DOMString securityOrigin,
+                      GenericDoneCallback callback);
+
+    // Sets whether the log should be uploaded automatically for the case when
+    // the render process goes away (tab is closed or crashes) and stop has not
+    // been called before that. If |shouldUpload| is true it will be uploaded,
+    // otherwise it will be discarded. The default setting is to discard it.
+    static void setUploadOnRenderClose(RequestInfo request,
+                                       DOMString securityOrigin,
+                                       boolean shouldUpload);
+
+    // Stops logging. After stop has finished, either upload() or discard()
+    // should be called, otherwise the log will be kept in memory until the
+    // render process is closed or logging restarted.
+    static void stop(RequestInfo request,
+                     DOMString securityOrigin,
+                     GenericDoneCallback callback);
+
+    // Stores the current log without uploading. The log may stay around for
+    // as much as 5 days. The application has the option of supplying an id
+    // for uniquely identifying the log for later upload via a call to
+    // uploadStored().
+    static void store(RequestInfo request,
+                      DOMString securityOrigin,
+                      DOMString logId,
+                      GenericDoneCallback callback);
+
+    // Uploads a previously kept log that was stored via a call to store().
+    // The caller needs to know the logId as was originally provided in the
+    // call to store().
+    static void uploadStored(RequestInfo request,
+                             DOMString securityOrigin,
+                             DOMString logId,
+                             UploadDoneCallback callback);
+
+    // Uploads the log and the RTP dumps, if they exist. Logging and RTP dumping
+    // must be stopped before this function is called.
+    static void upload(RequestInfo request,
+                       DOMString securityOrigin,
+                       UploadDoneCallback callback);
+
+    // Discards the log. Logging must be stopped before this function is called.
+    static void discard(RequestInfo request,
+                        DOMString securityOrigin,
+                        GenericDoneCallback callback);
+
+    // Starts RTP dumping. If it has already been started for this render
+    // process, the call will be ignored.
+    static void startRtpDump(RequestInfo request,
+                             DOMString securityOrigin,
+                             boolean incoming,
+                             boolean outgoing,
+                             GenericDoneCallback callback);
+
+    // Stops RTP dumping. After stop has finished, the dumps will be
+    // uploaded with the log if upload is called. Otherwise, the dumps will be
+    // discarded.
+    static void stopRtpDump(RequestInfo request,
+                            DOMString securityOrigin,
+                            boolean incoming,
+                            boolean outgoing,
+                            GenericDoneCallback callback);
+  };
+};
diff --git a/tests/lib/idl-convert.js b/tests/lib/idl-convert.js
new file mode 100644
index 0000000..53ac18e
--- /dev/null
+++ b/tests/lib/idl-convert.js
@@ -0,0 +1,36 @@
+/**
+ * Copyright 2022 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import test from 'ava';
+import { convertFromIdl } from '../../tools/lib/idl-convert.js';
+import { fetchAllTo } from '../../tools/lib/chrome-source.js';
+import { toolsPaths } from '../../tools/prepare.js';
+import { chromeVersions } from '../../tools/lib/chrome-versions.js';
+
+test('convertFromIdl', async (t) => {
+  // Make sure IDL still generated
+  const filename = '.assets/sample.idl';
+  let root = process.cwd();
+
+  if (process.env.CI) {
+    const {head} = await chromeVersions()
+    await fetchAllTo(root, toolsPaths, head);
+  }
+
+  await t.notThrowsAsync(() =>
+    convertFromIdl(root, filename)
+  );
+});
diff --git a/tools/prepare.js b/tools/prepare.js
index 5ea3f72..d95600d 100755
--- a/tools/prepare.js
+++ b/tools/prepare.js
@@ -51,7 +51,7 @@ const definitionPaths = [
 /**
  * Fetch these folders to run the IDL => JSON converter.
  */
-const toolsPaths = [
+export const toolsPaths = [
   'tools/json_schema_compiler',
   'tools/json_comment_eater',
   'ppapi/generators',