summaryrefslogtreecommitdiff
path: root/spec/ruby/library/set/sortedset/subset_spec.rb
blob: 272e3f985e2535ab51bc165fdc4add6fdea1fba1 (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
require_relative '../../../spec_helper'

ruby_version_is ""..."3.0" do
  require 'set'

  describe "SortedSet#subset?" do
    before :each do
      @set = SortedSet[1, 2, 3, 4]
    end

    it "returns true if passed a SortedSet that is equal to self or self is a subset of" do
      @set.subset?(@set).should be_true
      SortedSet[].subset?(SortedSet[]).should be_true

      SortedSet[].subset?(@set).should be_true
      SortedSet[].subset?(SortedSet[1, 2, 3]).should be_true
      SortedSet[].subset?(SortedSet["a", "b", "c"]).should be_true

      SortedSet[1, 2, 3].subset?(@set).should be_true
      SortedSet[1, 3].subset?(@set).should be_true
      SortedSet[1, 2].subset?(@set).should be_true
      SortedSet[1].subset?(@set).should be_true

      SortedSet[5].subset?(@set).should be_false
      SortedSet[1, 5].subset?(@set).should be_false
      SortedSet["test"].subset?(@set).should be_false
    end

    it "raises an ArgumentError when passed a non-SortedSet" do
      -> { SortedSet[].subset?([]) }.should raise_error(ArgumentError)
      -> { SortedSet[].subset?(1) }.should raise_error(ArgumentError)
      -> { SortedSet[].subset?("test") }.should raise_error(ArgumentError)
      -> { SortedSet[].subset?(Object.new) }.should raise_error(ArgumentError)
    end
  end
end