diff options
Diffstat (limited to 'spec/ruby/core/env/dup_spec.rb')
| -rw-r--r-- | spec/ruby/core/env/dup_spec.rb | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/spec/ruby/core/env/dup_spec.rb b/spec/ruby/core/env/dup_spec.rb new file mode 100644 index 0000000000..46d125aca8 --- /dev/null +++ b/spec/ruby/core/env/dup_spec.rb @@ -0,0 +1,11 @@ +require_relative '../../spec_helper' + +describe "ENV#dup" do + ruby_version_is "3.1" do + it "raises TypeError" do + -> { + ENV.dup + }.should raise_error(TypeError, /Cannot dup ENV, use ENV.to_h to get a copy of ENV as a hash/) + end + end +end |