From 969cf7c8617e94b25b201aeb9e84064815cc2f3a Mon Sep 17 00:00:00 2001
From: Chris Roberson <chrisronline@gmail.com>
Date: Fri, 12 Jan 2018 12:34:47 -0500
Subject: [PATCH] Add syncify helper for testing async functions that throw
 exceptions

---
 src/test/index.js   |  1 +
 src/test/syncify.js | 10 ++++++++++
 2 files changed, 11 insertions(+)
 create mode 100644 src/test/syncify.js

diff --git a/src/test/index.js b/src/test/index.js
index af1224e7b7b3..616df81665cb 100644
--- a/src/test/index.js
+++ b/src/test/index.js
@@ -2,3 +2,4 @@ export { requiredProps } from './required_props';
 export { takeMountedSnapshot } from './take_mounted_snapshot';
 export { findTestSubject } from './find_test_subject';
 export { startThrowingReactWarnings, stopThrowingReactWarnings } from './react_warnings';
+export { syncify } from './syncify';
diff --git a/src/test/syncify.js b/src/test/syncify.js
new file mode 100644
index 000000000000..e28f0f1d6f1b
--- /dev/null
+++ b/src/test/syncify.js
@@ -0,0 +1,10 @@
+// Helper designed to help test async/await functions that throw exceptions
+// https://github.com/facebook/jest/issues/1377
+export const syncify = async (fn) => {
+  try {
+    const result = await fn();
+    return () => { return result; };
+  } catch (e) {
+    return () => { throw e; };
+  }
+};