mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
27 lines
956 B
Ruby
27 lines
956 B
Ruby
require_relative '../../spec_helper'
|
|
|
|
describe "Complex.polar" do
|
|
it "returns a complex number in terms of radius and angle" do
|
|
Complex.polar(50, 60).should be_close(Complex(-47.6206490207578, -15.2405310551108), TOLERANCE)
|
|
Complex.polar(-10, -20).should be_close(Complex(-4.08082061813392, 9.12945250727628), TOLERANCE)
|
|
end
|
|
|
|
it "raises a TypeError when given non real arguments" do
|
|
->{ Complex.polar(nil) }.should raise_error(TypeError)
|
|
->{ Complex.polar(nil, nil) }.should raise_error(TypeError)
|
|
end
|
|
end
|
|
|
|
describe "Complex#polar" do
|
|
it "returns the absolute value and the argument" do
|
|
a = Complex(3, 4)
|
|
a.polar.size.should == 2
|
|
a.polar.first.should == 5.0
|
|
a.polar.last.should be_close(0.927295218001612, TOLERANCE)
|
|
|
|
b = Complex(-3.5, 4.7)
|
|
b.polar.size.should == 2
|
|
b.polar.first.should be_close(5.86003412959345, TOLERANCE)
|
|
b.polar.last.should be_close(2.21088447955664, TOLERANCE)
|
|
end
|
|
end
|