1 files changed, 24 insertions, 0 deletions
diff --git a/test/prism/format_errors_test.rb b/test/prism/format_errors_test.rb
new file mode 100644
index 0000000000..a1edbef2e8
--- /dev/null
+++ b/test/prism/format_errors_test.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+require_relative "test_helper"
+
+return if Prism::BACKEND == :FFI
+
+module Prism
+  class FormatErrorsTest < TestCase
+    def test_format_errors
+      assert_equal <<~ERROR, Debug.format_errors("<>", false)
+        > 1 | <>
+            | ^ unexpected '<', ignoring it
+            |  ^ unexpected '>', ignoring it
+      ERROR
+
+      assert_equal <<~'ERROR', Debug.format_errors('"%W"\u"', false)
+        > 1 | "%W"\u"
+            |     ^ unexpected backslash, ignoring it
+            |      ^ unexpected local variable or method, expecting end-of-input
+            |        ^ unterminated string meets end of file
+      ERROR
+    end
+  end
+end