1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
describe :math_atanh_base, shared: true do
it "returns a float" do
@object.send(@method, 0.5).should be_an_instance_of(Float)
end
it "returns the inverse hyperbolic tangent of the argument" do
@object.send(@method, 0.0).should == 0.0
@object.send(@method, -0.0).should == -0.0
@object.send(@method, 0.5).should be_close(0.549306144334055, TOLERANCE)
@object.send(@method, -0.2).should be_close(-0.202732554054082, TOLERANCE)
end
it "raises a TypeError if the argument is nil" do
lambda { @object.send(@method, nil) }.should raise_error(TypeError)
end
it "raises a TypeError if the argument is not a Numeric" do
lambda { @object.send(@method, "test") }.should raise_error(TypeError)
end
it "returns Infinity if x == 1.0" do
@object.send(@method, 1.0).should == Float::INFINITY
end
it "return -Infinity if x == -1.0" do
@object.send(@method, -1.0).should == -Float::INFINITY
end
end
describe :math_atanh_private, shared: true do
it "is a private instance method" do
Math.should have_private_instance_method(@method)
end
end
describe :math_atanh_no_complex, shared: true do
it "raises a Math::DomainError for arguments greater than 1.0" do
lambda { @object.send(@method, 1.0 + Float::EPSILON) }.should raise_error(Math::DomainError)
end
it "raises a Math::DomainError for arguments less than -1.0" do
lambda { @object.send(@method, -1.0 - Float::EPSILON) }.should raise_error(Math::DomainError)
end
end
|
