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
|
require_relative '../../spec_helper'
describe "Integer#rationalize" do
before :all do
@numbers = [
0,
29871,
99999999999999**99,
-72628191273,
]
end
it "returns a Rational object" do
@numbers.each do |number|
number.rationalize.should be_an_instance_of(Rational)
end
end
it "uses self as the numerator" do
@numbers.each do |number|
number.rationalize.numerator.should == number
end
end
it "uses 1 as the denominator" do
@numbers.each do |number|
number.rationalize.denominator.should == 1
end
end
it "ignores a single argument" do
1.rationalize(0.1).should == Rational(1,1)
end
it "raises ArgumentError when passed more than one argument" do
-> { 1.rationalize(0.1, 0.1) }.should raise_error(ArgumentError)
-> { 1.rationalize(0.1, 0.1, 2) }.should raise_error(ArgumentError)
end
end
|
