1 files changed, 20 insertions, 0 deletions
diff --git a/spec/ruby/core/kernel/shared/then.rb b/spec/ruby/core/kernel/shared/then.rb
new file mode 100644
index 0000000000..c71393bf50
--- /dev/null
+++ b/spec/ruby/core/kernel/shared/then.rb
@@ -0,0 +1,20 @@
+describe :kernel_then, shared: true do
+  it "yields self" do
+    object = Object.new
+    object.send(@method) { |o| o.should.equal? object }
+  end
+
+  it "returns the block return value" do
+    object = Object.new
+    object.send(@method) { 42 }.should.equal? 42
+  end
+
+  it "returns a sized Enumerator when no block given" do
+    object = Object.new
+    enum = object.send(@method)
+    enum.should.instance_of? Enumerator
+    enum.size.should.equal? 1
+    enum.peek.should.equal? object
+    enum.first.should.equal? object
+  end
+end