1 files changed, 30 insertions, 0 deletions
diff --git a/spec/ruby/core/enumerable/to_set_spec.rb b/spec/ruby/core/enumerable/to_set_spec.rb
new file mode 100644
index 0000000000..7b04c72bce
--- /dev/null
+++ b/spec/ruby/core/enumerable/to_set_spec.rb
@@ -0,0 +1,30 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe "Enumerable#to_set" do
+  it "returns a new Set created from self" do
+    [1, 2, 3].to_set.should == Set[1, 2, 3]
+    {a: 1, b: 2}.to_set.should == Set[[:b, 2], [:a, 1]]
+  end
+
+  it "passes down passed blocks" do
+    [1, 2, 3].to_set { |x| x * x }.should == Set[1, 4, 9]
+  end
+
+  ruby_version_is "4.0"..."4.1" do
+    it "instantiates an object of provided as the first argument set class" do
+      set = nil
+      proc{set = [1, 2, 3].to_set(EnumerableSpecs::SetSubclass)}.should complain(/Enumerable#to_set/)
+      set.should.is_a?(EnumerableSpecs::SetSubclass)
+      set.to_a.sort.should == [1, 2, 3]
+    end
+  end
+
+  ruby_version_is ""..."4.0" do
+    it "instantiates an object of provided as the first argument set class" do
+      set = [1, 2, 3].to_set(EnumerableSpecs::SetSubclass)
+      set.should.is_a?(EnumerableSpecs::SetSubclass)
+      set.to_a.sort.should == [1, 2, 3]
+    end
+  end
+end