Test case for multiline string attribute values

Author: bradleyayers

test.js

@@ -2622,6 +2622,34 @@ test('roundtrip', async function (t) {
       equal(source, source)
     }
   )
+
+  await t.test(
+    'should roundtrip `JSX attributes containing new lines`',
+    async function () {
+      equal(
+        `<a
+  text={\`
+0
+ 1
+  2
+   3
+    4
+     5\`}
+/>
+`,
+        `<a
+  text={\`
+0
+ 1
+  2
+   3
+    4
+     5\`}
+/>
+`
+      )
+    }
+  )
 })
 
 /**