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
45
46
47
48
49
50
|
require_relative "../../spec_helper"
require_relative 'shared/arithmetic_exception_in_coerce'
describe "Rational#+" do
it "calls #coerce on the passed argument with self" do
rational = Rational(3, 4)
obj = mock("Object")
obj.should_receive(:coerce).with(rational).and_return([1, 2])
rational + obj
end
it "calls #+ on the coerced Rational with the coerced Object" do
rational = Rational(3, 4)
coerced_rational = mock("Coerced Rational")
coerced_rational.should_receive(:+).and_return(:result)
coerced_obj = mock("Coerced Object")
obj = mock("Object")
obj.should_receive(:coerce).and_return([coerced_rational, coerced_obj])
(rational + obj).should == :result
end
it_behaves_like :rational_arithmetic_exception_in_coerce, :+
end
describe "Rational#+ with a Rational" do
it "returns the result of subtracting other from self as a Rational" do
(Rational(3, 4) + Rational(0, 1)).should eql(Rational(3, 4))
(Rational(3, 4) + Rational(1, 4)).should eql(Rational(1, 1))
(Rational(3, 4) + Rational(2, 1)).should eql(Rational(11, 4))
end
end
describe "Rational#+ with a Float" do
it "returns the result of subtracting other from self as a Float" do
(Rational(3, 4) + 0.2).should eql(0.95)
(Rational(3, 4) + 2.5).should eql(3.25)
end
end
describe "Rational#+ with an Integer" do
it "returns the result of subtracting other from self as a Rational" do
(Rational(3, 4) + 1).should eql(Rational(7, 4))
(Rational(3, 4) + 2).should eql(Rational(11, 4))
end
end
|
