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Diffstat (limited to 'spec/ruby/core/complex/to_i_spec.rb')
-rw-r--r-- | spec/ruby/core/complex/to_i_spec.rb | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/spec/ruby/core/complex/to_i_spec.rb b/spec/ruby/core/complex/to_i_spec.rb new file mode 100644 index 0000000000..ea8b199b2e --- /dev/null +++ b/spec/ruby/core/complex/to_i_spec.rb @@ -0,0 +1,41 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Complex#to_i" do + describe "when the imaginary part is Fixnum 0" do + it "returns the result of sending #to_i to the real part" do + real = mock_numeric('real') + real.should_receive(:to_i).and_return(:i) + Complex(real, 0).to_i.should == :i + end + end + + describe "when the imaginary part is Rational 0" do + it "returns the result of sending #to_i to the real part" do + real = mock_numeric('real') + real.should_receive(:to_i).and_return(:i) + Complex(real, Rational(0)).to_i.should == :i + end + end + + describe "when the imaginary part responds to #== 0 with true" do + it "returns the result of sending #to_i to the real part" do + real = mock_numeric('real') + real.should_receive(:to_i).and_return(:i) + imag = mock_numeric('imag') + imag.should_receive(:==).with(0).any_number_of_times.and_return(true) + Complex(real, imag).to_i.should == :i + end + end + + describe "when the imaginary part is non-zero" do + it "raises RangeError" do + lambda { Complex(0, 1).to_i }.should raise_error(RangeError) + end + end + + describe "when the imaginary part is Float 0.0" do + it "raises RangeError" do + lambda { Complex(0, 0.0).to_i }.should raise_error(RangeError) + end + end +end |