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require_relative '../../spec_helper'
describe "Integer#digits" do
it "returns an array of place values in base-10 by default" do
12345.digits.should == [5,4,3,2,1]
end
it "returns digits by place value of a given radix" do
12345.digits(7).should == [4,6,6,0,5]
end
it "converts the radix with #to_int" do
12345.digits(mock_int(2)).should == [1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1]
end
it "returns [0] when called on 0, regardless of base" do
0.digits.should == [0]
0.digits(7).should == [0]
end
it "raises ArgumentError when calling with a radix less than 2" do
-> { 12345.digits(1) }.should raise_error(ArgumentError)
end
it "raises ArgumentError when calling with a negative radix" do
-> { 12345.digits(-2) }.should raise_error(ArgumentError)
end
it "raises Math::DomainError when calling digits on a negative number" do
-> { -12345.digits(7) }.should raise_error(Math::DomainError)
end
it "returns integer values > 9 when base is above 10" do
1234.digits(16).should == [2, 13, 4]
end
it "can be used with base > 37" do
1234.digits(100).should == [34, 12]
980099.digits(100).should == [99, 0, 98]
end
end
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