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 'date'
require File.expand_path('../../../spec_helper', __FILE__)
describe "Date#-" do
it "substracts a number of days from a Date" do
d = Date.civil(2007, 5 ,2) - 13
d.should == Date.civil(2007, 4, 19)
end
it "substracts a negative number of days from a Date" do
d = Date.civil(2007, 4, 19).-(-13)
d.should == Date.civil(2007, 5 ,2)
end
it "computes the difference between two dates" do
(Date.civil(2007,2,27) - Date.civil(2007,2,27)).should == 0
(Date.civil(2007,2,27) - Date.civil(2007,2,26)).should == 1
(Date.civil(2006,2,27) - Date.civil(2007,2,27)).should == -365
(Date.civil(2008,2,27) - Date.civil(2007,2,27)).should == 365
end
it "raises an error for non Numeric arguments" do
lambda { Date.civil(2007,2,27) - :hello }.should raise_error(TypeError)
lambda { Date.civil(2007,2,27) - "hello" }.should raise_error(TypeError)
lambda { Date.civil(2007,2,27) - Object.new }.should raise_error(TypeError)
end
end
|
