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35 lines
1 KiB
Ruby
35 lines
1 KiB
Ruby
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require File.expand_path('../../../spec_helper', __FILE__)
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ruby_version_is "2.4" do
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describe "Integer#digits" do
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it "returns an array of place values in base-10 by default" do
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12345.digits.should == [5,4,3,2,1]
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end
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it "returns digits by place value of a given radix" do
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12345.digits(7).should == [4,6,6,0,5]
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end
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it "converts the radix with #to_int" do
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12345.digits(mock_int(2)).should == [1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1]
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end
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it "returns [0] when called on 0, regardless of base" do
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0.digits.should == [0]
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0.digits(7).should == [0]
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end
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it "raises ArgumentError when calling with a radix less than 2" do
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lambda { 12345.digits(1) }.should raise_error(ArgumentError)
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end
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it "raises ArgumentError when calling with a negative radix" do
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lambda { 12345.digits(-2) }.should raise_error(ArgumentError)
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end
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it "raises Math::DomainError when calling digits on a negative number" do
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lambda { -12345.digits(7) }.should raise_error(Math::DomainError)
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end
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end
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end
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