diff options
Diffstat (limited to 'spec/ruby/core/complex/abs_spec.rb')
| -rw-r--r-- | spec/ruby/core/complex/abs_spec.rb | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/spec/ruby/core/complex/abs_spec.rb b/spec/ruby/core/complex/abs_spec.rb new file mode 100644 index 0000000000..ed5aebb11d --- /dev/null +++ b/spec/ruby/core/complex/abs_spec.rb @@ -0,0 +1,12 @@ +require_relative '../../spec_helper' + +describe "Complex#abs" do + it "returns the modulus: |a + bi| = sqrt((a ^ 2) + (b ^ 2))" do + Complex(0, 0).abs.should == 0 + Complex(3, 4).abs.should == 5 # well-known integer case + Complex(-3, 4).abs.should == 5 + Complex(1, -1).abs.should be_close(Math.sqrt(2), TOLERANCE) + Complex(6.5, 0).abs.should be_close(6.5, TOLERANCE) + Complex(0, -7.2).abs.should be_close(7.2, TOLERANCE) + end +end |