1 files changed, 77 insertions, 0 deletions
diff --git a/spec/ruby/core/range/new_spec.rb b/spec/ruby/core/range/new_spec.rb
new file mode 100644
index 0000000000..9a35f28c7e
--- /dev/null
+++ b/spec/ruby/core/range/new_spec.rb
@@ -0,0 +1,77 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe "Range.new" do
+  it "constructs a range using the given start and end" do
+    range = Range.new('a', 'c')
+    range.should == ('a'..'c')
+
+    range.first.should == 'a'
+    range.last.should == 'c'
+  end
+
+  it "includes the end object when the third parameter is omitted or false" do
+    Range.new('a', 'c').to_a.should == ['a', 'b', 'c']
+    Range.new(1, 3).to_a.should == [1, 2, 3]
+
+    Range.new('a', 'c', false).to_a.should == ['a', 'b', 'c']
+    Range.new(1, 3, false).to_a.should == [1, 2, 3]
+
+    Range.new('a', 'c', true).to_a.should == ['a', 'b']
+    Range.new(1, 3, 1).to_a.should == [1, 2]
+
+    Range.new(1, 3, mock('[1,2]')).to_a.should == [1, 2]
+    Range.new(1, 3, :test).to_a.should == [1, 2]
+  end
+
+  it "raises an ArgumentError when the given start and end can't be compared by using #<=>" do
+    -> { Range.new(1, mock('x'))         }.should.raise(ArgumentError)
+    -> { Range.new(mock('x'), mock('y')) }.should.raise(ArgumentError)
+
+    b = mock('x')
+    (a = mock('nil')).should_receive(:<=>).with(b).and_return(nil)
+    -> { Range.new(a, b) }.should.raise(ArgumentError)
+  end
+
+  it "does not rescue exception raised in #<=> when compares the given start and end" do
+    b = mock('a')
+    a = mock('b')
+    a.should_receive(:<=>).with(b).and_raise(RangeSpecs::ComparisonError)
+
+    -> { Range.new(a, b) }.should.raise(RangeSpecs::ComparisonError)
+  end
+
+  describe "beginless/endless range" do
+    it "allows beginless left boundary" do
+      range = Range.new(nil, 1)
+      range.begin.should == nil
+    end
+
+    it "distinguishes ranges with included and excluded right boundary" do
+      range_exclude = Range.new(nil, 1, true)
+      range_include = Range.new(nil, 1, false)
+
+      range_exclude.should_not == range_include
+    end
+
+    it "allows endless right boundary" do
+      range = Range.new(1, nil)
+      range.end.should == nil
+    end
+
+    it "distinguishes ranges with included and excluded right boundary" do
+      range_exclude = Range.new(1, nil, true)
+      range_include = Range.new(1, nil, false)
+
+      range_exclude.should_not == range_include
+    end
+
+    it "creates a frozen range if the class is Range.class" do
+      Range.new(1, 2).should.frozen?
+    end
+
+    it "does not create a frozen range if the class is not Range.class" do
+      Class.new(Range).new(1, 2).should_not.frozen?
+    end
+  end
+end