1 files changed, 41 insertions, 0 deletions
diff --git a/spec/ruby/core/range/initialize_spec.rb b/spec/ruby/core/range/initialize_spec.rb
new file mode 100644
index 0000000000..457f048f8a
--- /dev/null
+++ b/spec/ruby/core/range/initialize_spec.rb
@@ -0,0 +1,41 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Range#initialize" do
+  before do
+    @range = Range.allocate
+  end
+
+  it "is private" do
+    Range.should have_private_instance_method("initialize")
+  end
+
+  it "initializes correctly the Range object when given 2 arguments" do
+    lambda { @range.send(:initialize, 0, 1) }.should_not raise_error
+  end
+
+  it "initializes correctly the Range object when given 3 arguments" do
+    lambda { @range.send(:initialize, 0, 1, true) }.should_not raise_error
+  end
+
+  it "raises an ArgumentError if passed without or with only one argument" do
+    lambda { @range.send(:initialize) }.should raise_error(ArgumentError)
+    lambda { @range.send(:initialize, 1) }.should raise_error(ArgumentError)
+  end
+
+  it "raises an ArgumentError if passed with four or more arguments" do
+    lambda { @range.send(:initialize, 1, 3, 5, 7) }.should raise_error(ArgumentError)
+    lambda { @range.send(:initialize, 1, 3, 5, 7, 9) }.should raise_error(ArgumentError)
+  end
+
+  it "raises a NameError if called on an already initialized Range" do
+    lambda { (0..1).send(:initialize, 1, 3) }.should raise_error(NameError)
+    lambda { (0..1).send(:initialize, 1, 3, true) }.should raise_error(NameError)
+  end
+
+  it "raises an ArgumentError if arguments don't respond to <=>" do
+    o1 = Object.new
+    o2 = Object.new
+
+    lambda { @range.send(:initialize, o1, o2) }.should raise_error(ArgumentError)
+  end
+end