1 files changed, 26 insertions, 0 deletions
diff --git a/spec/ruby/core/set/classify_spec.rb b/spec/ruby/core/set/classify_spec.rb
new file mode 100644
index 0000000000..d86ea2722d
--- /dev/null
+++ b/spec/ruby/core/set/classify_spec.rb
@@ -0,0 +1,26 @@
+require_relative '../../spec_helper'
+
+describe "Set#classify" do
+  before :each do
+    @set = Set["one", "two", "three", "four"]
+  end
+
+  it "yields each Object in self" do
+    res = []
+    @set.classify { |x| res << x }
+    res.sort.should == ["one", "two", "three", "four"].sort
+  end
+
+  it "returns an Enumerator when passed no block" do
+    enum = @set.classify
+    enum.should be_an_instance_of(Enumerator)
+
+    classified = enum.each { |x| x.length }
+    classified.should == { 3 => Set["one", "two"], 4 => Set["four"], 5 => Set["three"] }
+  end
+
+  it "classifies the Objects in self based on the block's return value" do
+    classified = @set.classify { |x| x.length }
+    classified.should == { 3 => Set["one", "two"], 4 => Set["four"], 5 => Set["three"] }
+  end
+end