diff options
Diffstat (limited to 'spec/ruby')
| -rw-r--r-- | spec/ruby/core/set/merge_spec.rb | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/spec/ruby/core/set/merge_spec.rb b/spec/ruby/core/set/merge_spec.rb index 2ee6a4b709..0c6ed27670 100644 --- a/spec/ruby/core/set/merge_spec.rb +++ b/spec/ruby/core/set/merge_spec.rb @@ -16,6 +16,13 @@ describe "Set#merge" do -> { Set[1, 2].merge(Object.new) }.should raise_error(ArgumentError) end + it "raises RuntimeError when called during iteration" do + set = Set[:a, :b] + set.each do |_m| + -> { set.merge([1, 2]) }.should raise_error(RuntimeError, /iteration/) + end + end + ruby_version_is ""..."3.3" do it "accepts only a single argument" do -> { Set[].merge([], []) }.should raise_error(ArgumentError, "wrong number of arguments (given 2, expected 1)") |