diff options
Diffstat (limited to 'test/lib/parser_support.rb')
| -rw-r--r-- | test/lib/parser_support.rb | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/test/lib/parser_support.rb b/test/lib/parser_support.rb new file mode 100644 index 0000000000..0daf45e87b --- /dev/null +++ b/test/lib/parser_support.rb @@ -0,0 +1,20 @@ +# frozen_string_literal: true + +module ParserSupport + module_function + + # Determines whether or not Prism is being used in the current process. This + # would have been determined by `--parser=prism` on either the command line or + # from within various environment variables. + def prism_enabled? + RubyVM::InstructionSequence.compile("").to_a[4][:parser] == :prism + end + + # Determines whether or not Prism would be used by a subprocess. This is + # necessary because some tests run in subprocesses, and we need to know if we + # expect Prism to be used by those tests. This happens if Prism is configured + # as the default parser. + def prism_enabled_in_subprocess? + EnvUtil.invoke_ruby(["-v"], "", true, false)[0].include?("+PRISM") + end +end |