1 files changed, 57 insertions, 0 deletions
diff --git a/spec/ruby/core/range/last_spec.rb b/spec/ruby/core/range/last_spec.rb
new file mode 100644
index 0000000000..a7db7f85a7
--- /dev/null
+++ b/spec/ruby/core/range/last_spec.rb
@@ -0,0 +1,57 @@
+require_relative '../../spec_helper'
+require_relative 'shared/end'
+
+describe "Range#last" do
+  it_behaves_like :range_end, :last
+
+  it "returns the specified number of elements from the end" do
+    (1..5).last(3).should == [3, 4, 5]
+  end
+
+  it "returns the specified number if elements for single element inclusive range" do
+    (1..1).last(1).should == [1]
+  end
+
+  it "returns an empty array for an empty Range" do
+    (0...0).last(2).should == []
+  end
+
+  it "returns an empty array when passed zero" do
+    (0..2).last(0).should == []
+  end
+
+  it "returns all elements in the range when count exceeds the number of elements" do
+    (2..4).last(5).should == [2, 3, 4]
+  end
+
+  it "raises an ArgumentError when count is negative" do
+    -> { (0..2).last(-1) }.should.raise(ArgumentError)
+  end
+
+  it "calls #to_int to convert the argument" do
+    obj = mock_int(2)
+    (3..7).last(obj).should == [6, 7]
+  end
+
+  it "raises a TypeError if #to_int does not return an Integer" do
+    obj = mock("to_int")
+    obj.should_receive(:to_int).and_return("1")
+    -> { (2..3).last(obj) }.should.raise(TypeError)
+  end
+
+  it "truncates the value when passed a Float" do
+    (2..9).last(2.8).should == [8, 9]
+  end
+
+  it "raises a TypeError when passed nil" do
+    -> { (2..3).last(nil) }.should.raise(TypeError)
+  end
+
+  it "raises a TypeError when passed a String" do
+    -> { (2..3).last("1") }.should.raise(TypeError)
+  end
+
+  it "raises a RangeError when called on an endless range" do
+    -> { eval("(1..)").last }.should.raise(RangeError)
+  end
+end