[ruby/prism] Return 1-indexed line numbers

https://github.com/ruby/prism/commit/ad17f58729

1 files changed, 17 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..62b24723b8
--- /dev/null
+++ b/test/prism/format_errors_test.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+return if Prism::BACKEND == :FFI
+
+require_relative "test_helper"
+
+module Prism
+  class FormatErrorsTest < TestCase
+    def test_format_errors
+      assert_equal <<~ERROR, Debug.format_errors("<>", false)
+        > 1 | <>
+            | ^ cannot parse the expression
+            |  ^ cannot parse the expression
+      ERROR
+    end
+  end
+end