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
|
require File.expand_path('../../fixtures/classes', __FILE__)
describe :complex_math_cos, :shared => true do
it "returns the cosine of the argument expressed in radians" do
@object.send(:cos, Math::PI).should be_close(-1.0, TOLERANCE)
@object.send(:cos, 0).should be_close(1.0, TOLERANCE)
@object.send(:cos, Math::PI/2).should be_close(0.0, TOLERANCE)
@object.send(:cos, 3*Math::PI/2).should be_close(0.0, TOLERANCE)
@object.send(:cos, 2*Math::PI).should be_close(1.0, TOLERANCE)
end
it "returns the cosine for Complex numbers" do
@object.send(:cos, Complex(0, Math::PI)).should be_close(Complex(11.5919532755215, 0.0), TOLERANCE)
@object.send(:cos, Complex(3, 4)).should be_close(Complex(-27.0349456030742, -3.85115333481178), TOLERANCE)
end
end
describe :complex_math_cos_bang, :shared => true do
it "returns the cosine of the argument expressed in radians" do
@object.send(:cos!, Math::PI).should be_close(-1.0, TOLERANCE)
@object.send(:cos!, 0).should be_close(1.0, TOLERANCE)
@object.send(:cos!, Math::PI/2).should be_close(0.0, TOLERANCE)
@object.send(:cos!, 3*Math::PI/2).should be_close(0.0, TOLERANCE)
@object.send(:cos!, 2*Math::PI).should be_close(1.0, TOLERANCE)
end
it "raises a TypeError when passed a Complex number" do
lambda { @object.send(:cos!, Complex(3, 4)) }.should raise_error(TypeError)
end
end
|
