diff options
Diffstat (limited to 'spec/ruby/core/integer/digits_spec.rb')
-rw-r--r-- | spec/ruby/core/integer/digits_spec.rb | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/spec/ruby/core/integer/digits_spec.rb b/spec/ruby/core/integer/digits_spec.rb new file mode 100644 index 0000000000..3546a654eb --- /dev/null +++ b/spec/ruby/core/integer/digits_spec.rb @@ -0,0 +1,34 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +ruby_version_is "2.4" do + 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 + lambda { 12345.digits(1) }.should raise_error(ArgumentError) + end + + it "raises ArgumentError when calling with a negative radix" do + lambda { 12345.digits(-2) }.should raise_error(ArgumentError) + end + + it "raises Math::DomainError when calling digits on a negative number" do + lambda { -12345.digits(7) }.should raise_error(Math::DomainError) + end + end +end |