From 93fc476352387b476ba4cf861de9be4da8b3f4ab Mon Sep 17 00:00:00 2001
From: Sebastian Silbermann <silbermann.sebastian@gmail.com>
Date: Mon, 25 Mar 2019 15:56:49 +0100
Subject: [PATCH] [ListItem] Add type test for button prop

---
 .../src/ListItem/ListItem.spec.tsx            | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 packages/material-ui/src/ListItem/ListItem.spec.tsx

diff --git a/packages/material-ui/src/ListItem/ListItem.spec.tsx b/packages/material-ui/src/ListItem/ListItem.spec.tsx
new file mode 100644
index 00000000000000..74ddc7e59f86e0
--- /dev/null
+++ b/packages/material-ui/src/ListItem/ListItem.spec.tsx
@@ -0,0 +1,21 @@
+import React from 'react';
+import ListItem from '@material-ui/core/ListItem';
+
+// button: boolean
+function BooleanButtonTest() {
+  // https://github.com/mui-org/material-ui/issues/14971
+
+  function EditableItemFail(props: { editable: boolean }) {
+    const { editable } = props;
+    // 'boolean' is not assignable to type 'true'
+    return <ListItem button={editable}>Editable? {editable}</ListItem>; // $ExpectError
+  }
+
+  function EditableItemValid(props: { editable: boolean }) {
+    const { editable } = props;
+    if (editable) {
+      <ListItem button>Editable? Yes</ListItem>;
+    }
+    return <ListItem>Editable? No</ListItem>;
+  }
+}