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Diffstat (limited to 'spec/ruby/library/set/shared/difference.rb')
-rw-r--r-- | spec/ruby/library/set/shared/difference.rb | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/spec/ruby/library/set/shared/difference.rb b/spec/ruby/library/set/shared/difference.rb new file mode 100644 index 0000000000..9439715da7 --- /dev/null +++ b/spec/ruby/library/set/shared/difference.rb @@ -0,0 +1,15 @@ +describe :set_difference, shared: true do + before :each do + @set = Set[:a, :b, :c] + end + + it "returns a new Set containting self's elements excluding the elements in the passed Enumerable" do + @set.send(@method, Set[:a, :b]).should == Set[:c] + @set.send(@method, [:b, :c]).should == Set[:a] + end + + it "raises an ArgumentError when passed a non-Enumerable" do + lambda { @set.send(@method, 1) }.should raise_error(ArgumentError) + lambda { @set.send(@method, Object.new) }.should raise_error(ArgumentError) + end +end |