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Diffstat (limited to 'spec/ruby/core/math/sinh_spec.rb')
-rw-r--r-- | spec/ruby/core/math/sinh_spec.rb | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/spec/ruby/core/math/sinh_spec.rb b/spec/ruby/core/math/sinh_spec.rb new file mode 100644 index 0000000000..daa7d30733 --- /dev/null +++ b/spec/ruby/core/math/sinh_spec.rb @@ -0,0 +1,37 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Math.sinh" do + it "returns a float" do + Math.sinh(1.2).should be_kind_of(Float) + end + + it "returns the hyperbolic sin of the argument" do + Math.sinh(0.0).should == 0.0 + Math.sinh(-0.0).should == 0.0 + Math.sinh(1.5).should be_close(2.12927945509482, TOLERANCE) + Math.sinh(-2.8).should be_close(-8.19191835423591, TOLERANCE) + end + + it "raises a TypeError if the argument cannot be coerced with Float()" do + lambda { Math.sinh("test") }.should raise_error(TypeError) + end + + it "returns NaN given NaN" do + Math.sinh(nan_value).nan?.should be_true + end + + it "raises a TypeError if the argument is nil" do + lambda { Math.sinh(nil) }.should raise_error(TypeError) + end + + it "accepts any argument that can be coerced with Float()" do + Math.sinh(MathSpecs::Float.new).should be_close(1.1752011936438, TOLERANCE) + end +end + +describe "Math#sinh" do + it "is accessible as a private instance method" do + IncludesMath.new.send(:sinh, 1.99).should be_close(3.58941916843202, TOLERANCE) + end +end |