1 files changed, 39 insertions, 0 deletions
diff --git a/spec/ruby/core/range/to_a_spec.rb b/spec/ruby/core/range/to_a_spec.rb
new file mode 100644
index 0000000000..6221ae5f71
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+++ b/spec/ruby/core/range/to_a_spec.rb
@@ -0,0 +1,39 @@
+require_relative '../../spec_helper'
+
+describe "Range#to_a" do
+  it "converts self to an array" do
+    (-5..5).to_a.should == [-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5]
+    ('A'..'D').to_a.should == ['A','B','C','D']
+    ('A'...'D').to_a.should == ['A','B','C']
+    (0xfffd...0xffff).to_a.should == [0xfffd,0xfffe]
+    -> { (0.5..2.4).to_a }.should.raise(TypeError)
+  end
+
+  it "returns empty array for descending-ordered" do
+    (5..-5).to_a.should == []
+    ('D'..'A').to_a.should == []
+    ('D'...'A').to_a.should == []
+    (0xffff...0xfffd).to_a.should == []
+  end
+
+  it "works with Ranges of 64-bit integers" do
+    large = 1 << 40
+    (large..large+1).to_a.should == [1099511627776, 1099511627777]
+  end
+
+  it "works with Ranges of Symbols" do
+    (:A..:z).to_a.size.should == 58
+  end
+
+  it "works for non-ASCII ranges" do
+    ('Σ'..'Ω').to_a.should == ["Σ", "Τ", "Υ", "Φ", "Χ", "Ψ", "Ω"]
+  end
+
+  it "throws an exception for endless ranges" do
+    -> { eval("(1..)").to_a }.should.raise(RangeError)
+  end
+
+  it "throws an exception for beginless ranges" do
+    -> { (..1).to_a }.should.raise(TypeError)
+  end
+end