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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
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