1 files changed, 15 insertions, 0 deletions
diff --git a/spec/ruby/library/set/sortedset/shared/intersection.rb b/spec/ruby/library/set/sortedset/shared/intersection.rb
new file mode 100644
index 0000000000..d3cfa96656
--- /dev/null
+++ b/spec/ruby/library/set/sortedset/shared/intersection.rb
@@ -0,0 +1,15 @@
+describe :sorted_set_intersection, shared: true do
+  before :each do
+    @set = SortedSet["a", "b", "c"]
+  end
+
+  it "returns a new SortedSet containing only elements shared by self and the passed Enumerable" do
+    @set.send(@method, SortedSet["b", "c", "d", "e"]).should == SortedSet["b", "c"]
+    @set.send(@method, ["b", "c", "d"]).should == SortedSet["b", "c"]
+  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