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1d15d5f080
* Other ruby implementations use the spec/ruby directory. [Misc #13792] [ruby-core:82287] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
44 lines
1.5 KiB
Ruby
44 lines
1.5 KiB
Ruby
describe :math_atanh_base, shared: true do
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it "returns a float" do
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@object.send(@method, 0.5).should be_an_instance_of(Float)
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end
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it "returns the inverse hyperbolic tangent of the argument" do
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@object.send(@method, 0.0).should == 0.0
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@object.send(@method, -0.0).should == -0.0
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@object.send(@method, 0.5).should be_close(0.549306144334055, TOLERANCE)
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@object.send(@method, -0.2).should be_close(-0.202732554054082, TOLERANCE)
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end
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it "raises a TypeError if the argument is nil" do
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lambda { @object.send(@method, nil) }.should raise_error(TypeError)
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end
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it "raises a TypeError if the argument is not a Numeric" do
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lambda { @object.send(@method, "test") }.should raise_error(TypeError)
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end
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it "returns Infinity if x == 1.0" do
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@object.send(@method, 1.0).should == Float::INFINITY
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end
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it "return -Infinity if x == -1.0" do
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@object.send(@method, -1.0).should == -Float::INFINITY
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end
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end
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describe :math_atanh_private, shared: true do
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it "is a private instance method" do
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Math.should have_private_instance_method(@method)
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end
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end
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describe :math_atanh_no_complex, shared: true do
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it "raises a Math::DomainError for arguments greater than 1.0" do
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lambda { @object.send(@method, 1.0 + Float::EPSILON) }.should raise_error(Math::DomainError)
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end
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it "raises a Math::DomainError for arguments less than -1.0" do
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lambda { @object.send(@method, -1.0 - Float::EPSILON) }.should raise_error(Math::DomainError)
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end
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end
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