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Diffstat (limited to 'spec/ruby/core/math/asinh_spec.rb')
-rw-r--r-- | spec/ruby/core/math/asinh_spec.rb | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/spec/ruby/core/math/asinh_spec.rb b/spec/ruby/core/math/asinh_spec.rb new file mode 100644 index 0000000000..0761285806 --- /dev/null +++ b/spec/ruby/core/math/asinh_spec.rb @@ -0,0 +1,42 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Math.asinh" do + it "returns a float" do + Math.asinh(1.5).should be_kind_of(Float) + end + + it "returns the inverse hyperbolic sin of the argument" do + Math.asinh(1.5).should be_close(1.19476321728711, TOLERANCE) + Math.asinh(-2.97).should be_close(-1.8089166921397, TOLERANCE) + Math.asinh(0.0).should == 0.0 + Math.asinh(-0.0).should == -0.0 + Math.asinh(1.05367e-08).should be_close(1.05367e-08, TOLERANCE) + Math.asinh(-1.05367e-08).should be_close(-1.05367e-08, TOLERANCE) + # Default tolerance does not scale right for these... + #Math.asinh(94906265.62).should be_close(19.0615, TOLERANCE) + #Math.asinh(-94906265.62).should be_close(-19.0615, TOLERANCE) + end + + it "raises a TypeError if the argument cannot be coerced with Float()" do + lambda { Math.asinh("test") }.should raise_error(TypeError) + end + + it "returns NaN given NaN" do + Math.asinh(nan_value).nan?.should be_true + end + + it "raises a TypeError if the argument is nil" do + lambda { Math.asinh(nil) }.should raise_error(TypeError) + end + + it "accepts any argument that can be coerced with Float()" do + Math.asinh(MathSpecs::Float.new).should be_close(0.881373587019543, TOLERANCE) + end +end + +describe "Math#asinh" do + it "is accessible as a private instance method" do + IncludesMath.new.send(:asinh, 19.275).should be_close(3.65262832292466, TOLERANCE) + end +end |