1 files changed, 18 insertions, 0 deletions
diff --git a/spec/ruby/library/set/sortedset/exclusion_spec.rb b/spec/ruby/library/set/sortedset/exclusion_spec.rb
new file mode 100644
index 0000000000..193dbb7725
--- /dev/null
+++ b/spec/ruby/library/set/sortedset/exclusion_spec.rb
@@ -0,0 +1,18 @@
+require File.expand_path('../../../../spec_helper', __FILE__)
+require 'set'
+
+describe "SortedSet#^" do
+  before :each do
+    @set = SortedSet[1, 2, 3, 4]
+  end
+
+  it "returns a new SortedSet containing elements that are not in both self and the passed Enumberable" do
+    (@set ^ SortedSet[3, 4, 5]).should == SortedSet[1, 2, 5]
+    (@set ^ [3, 4, 5]).should == SortedSet[1, 2, 5]
+  end
+
+  it "raises an ArgumentError when passed a non-Enumerable" do
+    lambda { @set ^ 3 }.should raise_error(ArgumentError)
+    lambda { @set ^ Object.new }.should raise_error(ArgumentError)
+  end
+end