diff options
Diffstat (limited to 'spec/ruby/core/integer/to_r_spec.rb')
-rw-r--r-- | spec/ruby/core/integer/to_r_spec.rb | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/spec/ruby/core/integer/to_r_spec.rb b/spec/ruby/core/integer/to_r_spec.rb new file mode 100644 index 0000000000..0eb158b100 --- /dev/null +++ b/spec/ruby/core/integer/to_r_spec.rb @@ -0,0 +1,26 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Integer#to_r" do + it "returns a Rational object" do + 309.to_r.should be_an_instance_of(Rational) + end + + it "constructs a rational number with self as the numerator" do + 34.to_r.numerator.should == 34 + end + + it "constructs a rational number with 1 as the denominator" do + 298.to_r.denominator.should == 1 + end + + it "works even if self is a Bignum" do + bignum = 99999**999 + bignum.should be_an_instance_of(Bignum) + bignum.to_r.should == Rational(bignum, 1) + end + + it "raises an ArgumentError if given any arguments" do + lambda { 287.to_r(2) }.should raise_error(ArgumentError) + lambda { 9102826.to_r(309, [], 71) }.should raise_error(ArgumentError) + end +end |