require_relative '../../spec_helper' require_relative 'fixtures/classes' 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