blob: 7edc80769f0c7a94778d2bde78c5658b357eb88f (
plain)
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
|
require_relative '../../spec_helper'
require 'set'
describe "Set#keep_if" do
before :each do
@set = Set["one", "two", "three"]
end
it "yields every element of self" do
ret = []
@set.keep_if { |x| ret << x }
ret.sort.should == ["one", "two", "three"].sort
end
it "keeps every element from self for which the passed block returns true" do
@set.keep_if { |x| x.size != 3 }
@set.size.should eql(1)
@set.should_not include("one")
@set.should_not include("two")
@set.should include("three")
end
it "returns self" do
@set.keep_if {}.should equal(@set)
end
it "returns an Enumerator when passed no block" do
enum = @set.keep_if
enum.should be_an_instance_of(Enumerator)
enum.each { |x| x.size != 3 }
@set.should_not include("one")
@set.should_not include("two")
@set.should include("three")
end
end
|
