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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_error(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_error(RangeError)
end
it "throws an exception for beginless ranges" do
-> { (..1).to_a }.should raise_error(TypeError)
end
end
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