[PRISM] Only parse shebang on main script

Fixes [Bug #20730]

1 files changed, 12 insertions, 11 deletions

diff --git a/test/prism/result/warnings_test.rb b/test/prism/result/warnings_test.rb
index 504458e178..fa87295898 100644
--- a/test/prism/result/warnings_test.rb
+++ b/test/prism/result/warnings_test.rb
@@ -336,23 +336,24 @@ module Prism
       def test_shebang_ending_with_carriage_return
         msg = "shebang line ending with \\r may cause problems"
 
-        assert_warning(<<~RUBY, msg, compare: false)
+        assert_warning(<<~RUBY, msg, compare: false, main_script: true)
           #!ruby\r
           p(123)
         RUBY
 
-        assert_warning(<<~RUBY, msg, compare: false)
+        assert_warning(<<~RUBY, msg, compare: false, main_script: true)
           #!ruby \r
           p(123)
         RUBY
 
-        assert_warning(<<~RUBY, msg, compare: false)
+        assert_warning(<<~RUBY, msg, compare: false, main_script: true)
           #!ruby -Eutf-8\r
           p(123)
         RUBY
 
-        # Used with the `-x` object, to ignore the script up until the first shebang that mentioned "ruby".
-        assert_warning(<<~SCRIPT, msg, compare: false)
+        # Used with the `-x` object, to ignore the script up until the first
+        # shebang that mentioned "ruby".
+        assert_warning(<<~SCRIPT, msg, compare: false, main_script: true)
           #!/usr/bin/env bash
           # Some initial shell script or other content
           # that Ruby should ignore
@@ -364,11 +365,11 @@ module Prism
           puts "Hello from Ruby!"
         SCRIPT
 
-        refute_warning("#ruby not_a_shebang\r\n", compare: false)
+        refute_warning("#ruby not_a_shebang\r\n", compare: false, main_script: true)
 
-        # CRuby doesn't emit the warning if a malformed file only has `\r` and not `\n`.
-        # https://bugs.ruby-lang.org/issues/20700
-        refute_warning("#!ruby\r", compare: false)
+        # CRuby doesn't emit the warning if a malformed file only has `\r` and
+        # not `\n`. https://bugs.ruby-lang.org/issues/20700.
+        refute_warning("#!ruby\r", compare: false, main_script: true)
       end
     end
 
@@ -384,8 +385,8 @@ module Prism
 
     private
 
-    def assert_warning(source, *messages, compare: true)
-      warnings = Prism.parse(source).warnings
+    def assert_warning(source, *messages, compare: true, **options)
+      warnings = Prism.parse(source, **options).warnings
       assert_equal messages.length, warnings.length, "Expected #{messages.length} warning(s) in #{source.inspect}, got #{warnings.map(&:message).inspect}"
 
       warnings.zip(messages).each do |warning, message|