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
|
require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
require File.expand_path('../shared/accessor', __FILE__)
describe "Struct#hash" do
it "returns the same fixnum for structs with the same content" do
[StructClasses::Ruby.new("1.8.6", "PPC"),
StructClasses::Car.new("Hugo", "Foo", "1972")].each do |stc|
stc.hash.should == stc.dup.hash
stc.hash.should be_kind_of(Fixnum)
end
end
it "returns the same value if structs are #eql?" do
car = StructClasses::Car.new("Honda", "Accord", "1998")
similar_car = StructClasses::Car.new("Honda", "Accord", "1998")
car.should eql(similar_car)
car.hash.should == similar_car.hash
end
it "allows for overriding methods in an included module" do
mod = Module.new do
def hash
"different"
end
end
s = Struct.new(:arg) do
include mod
end
s.new.hash.should == "different"
end
it "returns the same hash for recursive structs" do
car = StructClasses::Car.new("Honda", "Accord", "1998")
similar_car = StructClasses::Car.new("Honda", "Accord", "1998")
car[:make] = car
similar_car[:make] = car
car.hash.should == similar_car.hash
# This is because car.eql?(similar_car).
# Objects that are eql? must return the same hash.
# See the Struct#eql? specs
end
it_behaves_like :struct_accessor, :hash
end
|
