Test async error throwing.

astegmaier · Dec 12, 2022 · 8c57969 · 8c57969
1 parent d2a6eec
commit 8c57969
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Showing 3 changed files with 16 additions and 0 deletions.
diff --git a/src/iframe.js b/src/iframe.js
@@ -143,3 +143,7 @@ window.triggerConsoleTraceWithObject = function () {
 window.triggerConsoleLogObjectWithSubstitution = function () {
   console.log("a string: %s; an integer: %i; an object: %o", "foo", 1.23, { a: 1 }); // The leak goes away if you stringify a param.
 };
+
+window.triggerAsyncThrowError = async function () {
+  throw new Error("MyAsyncError");
+};
diff --git a/src/index.html b/src/index.html
@@ -61,6 +61,7 @@ <h1>Test page for iframe error objects</h1>
       <!-- <option value="trigger-console-log-object-with-substitution-in-iframe">
         Call console log with an object with string substitution -- (**CAUSES A LEAK**)
       </option> -->
+      <option value="catch-async-thrown-error-from-iframe">Try catching an error from inside the iframe -- (**CAUSES A LEAK**)</option>
     </select>
 
     <button id="add-iframe">Add iframe</button>

diff --git a/src/index.js b/src/index.js
@@ -160,6 +160,9 @@ function doPostAddingScenario(iframe) {
     case "trigger-console-log-object-with-substitution-in-iframe":
       iframe.contentWindow.triggerConsoleLogObjectWithSubstitution();
       return;
+    case "catch-async-thrown-error-from-iframe":
+      throwAsyncErrorInIframeAndCatchItOutside(iframe);
+      return;
     default:
       alert("Invalid value for after-adding-iframe dropdown");
       return;
@@ -352,3 +355,11 @@ function overrideConsoleErrorToStringifyNonPrimitives(iframeWindow) {
     }
   };
 }
+
+async function throwAsyncErrorInIframeAndCatchItOutside(iframe) {
+  try {
+    await iframe.contentWindow.triggerAsyncThrowError();
+  } catch (e) {
+    console.log("Could not load", e);
+  }
+}