[ruby/prism] Support offset

665f533373

test/prism/ruby_api_test.rb

@@ -231,6 +231,21 @@ module Prism
       assert_equal 16, base[parse_expression("0x1")]
     end
 
+    def test_offset
+      source = <<~RUBY
+        #!/bin/sh
+
+        echo "foo"
+        exit 0
+
+        #!/usr/bin/env ruby
+
+        puts "bar"
+      RUBY
+
+      assert Prism.parse_success?(source, offset: 30)
+    end
+
     private
 
     def parse_expression(source)