1 files changed, 17 insertions, 0 deletions
diff --git a/spec/ruby/core/set/exclusion_spec.rb b/spec/ruby/core/set/exclusion_spec.rb
new file mode 100644
index 0000000000..52ee34fe78
--- /dev/null
+++ b/spec/ruby/core/set/exclusion_spec.rb
@@ -0,0 +1,17 @@
+require_relative '../../spec_helper'
+
+describe "Set#^" do
+  before :each do
+    @set = Set[1, 2, 3, 4]
+  end
+
+  it "returns a new Set containing elements that are not in both self and the passed Enumerable" do
+    (@set ^ Set[3, 4, 5]).should == Set[1, 2, 5]
+    (@set ^ [3, 4, 5]).should == Set[1, 2, 5]
+  end
+
+  it "raises an ArgumentError when passed a non-Enumerable" do
+    -> { @set ^ 3 }.should.raise(ArgumentError)
+    -> { @set ^ Object.new }.should.raise(ArgumentError)
+  end
+end