diff options
Diffstat (limited to 'spec/ruby/core/math/sqrt_spec.rb')
| -rw-r--r-- | spec/ruby/core/math/sqrt_spec.rb | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/spec/ruby/core/math/sqrt_spec.rb b/spec/ruby/core/math/sqrt_spec.rb index 779aea2a0a..918e7c3a17 100644 --- a/spec/ruby/core/math/sqrt_spec.rb +++ b/spec/ruby/core/math/sqrt_spec.rb @@ -27,6 +27,10 @@ describe "Math.sqrt" do it "accepts any argument that can be coerced with Float()" do Math.sqrt(MathSpecs::Float.new).should be_close(1.0, TOLERANCE) end + + it "raises a Math::DomainError when given a negative number" do + -> { Math.sqrt(-1) }.should raise_error(Math::DomainError) + end end describe "Math#sqrt" do |