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ruby--ruby/test/test_set.rb
knu bd304ed85b Add Set#intersect? and #disjoint?. 
* lib/set.rb (Set#intersect?, Set#disjoint?): Add new methods for
  testing if two sets have any element in common.
  [ruby-core:45641] [Feature #6588] Based on the code by marcandre.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42253 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-07-30 09:58:13 +00:00

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require 'test/unit'
require 'set'
class TC_Set < Test::Unit::TestCase
def test_aref
assert_nothing_raised {
Set[]
Set[nil]
Set[1,2,3]
}
assert_equal(0, Set[].size)
assert_equal(1, Set[nil].size)
assert_equal(1, Set[[]].size)
assert_equal(1, Set[[nil]].size)
set = Set[2,4,6,4]
assert_equal(Set.new([2,4,6]), set)
end
def test_s_new
assert_nothing_raised {
Set.new()
Set.new(nil)
Set.new([])
Set.new([1,2])
Set.new('a'..'c')
}
assert_raises(ArgumentError) {
Set.new(false)
}
assert_raises(ArgumentError) {
Set.new(1)
}
assert_raises(ArgumentError) {
Set.new(1,2)
}
assert_equal(0, Set.new().size)
assert_equal(0, Set.new(nil).size)
assert_equal(0, Set.new([]).size)
assert_equal(1, Set.new([nil]).size)
ary = [2,4,6,4]
set = Set.new(ary)
ary.clear
assert_equal(false, set.empty?)
assert_equal(3, set.size)
ary = [1,2,3]
s = Set.new(ary) { |o| o * 2 }
assert_equal([2,4,6], s.sort)
end
def test_clone
set1 = Set.new
set2 = set1.clone
set1 << 'abc'
assert_equal(Set.new, set2)
end
def test_dup
set1 = Set[1,2]
set2 = set1.dup
assert_not_same(set1, set2)
assert_equal(set1, set2)
set1.add(3)
assert_not_equal(set1, set2)
end
def test_size
assert_equal(0, Set[].size)
assert_equal(2, Set[1,2].size)
assert_equal(2, Set[1,2,1].size)
end
def test_empty?
assert_equal(true, Set[].empty?)
assert_equal(false, Set[1, 2].empty?)
end
def test_clear
set = Set[1,2]
ret = set.clear
assert_same(set, ret)
assert_equal(true, set.empty?)
end
def test_replace
set = Set[1,2]
ret = set.replace('a'..'c')
assert_same(set, ret)
assert_equal(Set['a','b','c'], set)
end
def test_to_a
set = Set[1,2,3,2]
ary = set.to_a
assert_equal([1,2,3], ary.sort)
end
def test_flatten
# test1
set1 = Set[
1,
Set[
5,
Set[7,
Set[0]
],
Set[6,2],
1
],
3,
Set[3,4]
]
set2 = set1.flatten
set3 = Set.new(0..7)
assert_not_same(set2, set1)
assert_equal(set3, set2)
# test2; destructive
orig_set1 = set1
set1.flatten!
assert_same(orig_set1, set1)
assert_equal(set3, set1)
# test3; multiple occurrences of a set in an set
set1 = Set[1, 2]
set2 = Set[set1, Set[set1, 4], 3]
assert_nothing_raised {
set2.flatten!
}
assert_equal(Set.new(1..4), set2)
# test4; recursion
set2 = Set[]
set1 = Set[1, set2]
set2.add(set1)
assert_raises(ArgumentError) {
set1.flatten!
}
# test5; miscellaneous
empty = Set[]
set = Set[Set[empty, "a"],Set[empty, "b"]]
assert_nothing_raised {
set.flatten
}
set1 = empty.merge(Set["no_more", set])
assert_nil(Set.new(0..31).flatten!)
x = Set[Set[],Set[1,2]].flatten!
y = Set[1,2]
assert_equal(x, y)
end
def test_include?
set = Set[1,2,3]
assert_equal(true, set.include?(1))
assert_equal(true, set.include?(2))
assert_equal(true, set.include?(3))
assert_equal(false, set.include?(0))
assert_equal(false, set.include?(nil))
set = Set["1",nil,"2",nil,"0","1",false]
assert_equal(true, set.include?(nil))
assert_equal(true, set.include?(false))
assert_equal(true, set.include?("1"))
assert_equal(false, set.include?(0))
assert_equal(false, set.include?(true))
end
def test_superset?
set = Set[1,2,3]
assert_raises(ArgumentError) {
set.superset?()
}
assert_raises(ArgumentError) {
set.superset?(2)
}
assert_raises(ArgumentError) {
set.superset?([2])
}
assert_equal(true, set.superset?(Set[]))
assert_equal(true, set.superset?(Set[1,2]))
assert_equal(true, set.superset?(Set[1,2,3]))
assert_equal(false, set.superset?(Set[1,2,3,4]))
assert_equal(false, set.superset?(Set[1,4]))
assert_equal(true, set >= Set[1,2,3])
assert_equal(true, set >= Set[1,2])
assert_equal(true, Set[].superset?(Set[]))
end
def test_proper_superset?
set = Set[1,2,3]
assert_raises(ArgumentError) {
set.proper_superset?()
}
assert_raises(ArgumentError) {
set.proper_superset?(2)
}
assert_raises(ArgumentError) {
set.proper_superset?([2])
}
assert_equal(true, set.proper_superset?(Set[]))
assert_equal(true, set.proper_superset?(Set[1,2]))
assert_equal(false, set.proper_superset?(Set[1,2,3]))
assert_equal(false, set.proper_superset?(Set[1,2,3,4]))
assert_equal(false, set.proper_superset?(Set[1,4]))
assert_equal(false, set > Set[1,2,3])
assert_equal(true, set > Set[1,2])
assert_equal(false, Set[].proper_superset?(Set[]))
end
def test_subset?
set = Set[1,2,3]
assert_raises(ArgumentError) {
set.subset?()
}
assert_raises(ArgumentError) {
set.subset?(2)
}
assert_raises(ArgumentError) {
set.subset?([2])
}
assert_equal(true, set.subset?(Set[1,2,3,4]))
assert_equal(true, set.subset?(Set[1,2,3]))
assert_equal(false, set.subset?(Set[1,2]))
assert_equal(false, set.subset?(Set[]))
assert_equal(true, set <= Set[1,2,3])
assert_equal(true, set <= Set[1,2,3,4])
assert_equal(true, Set[].subset?(Set[1]))
assert_equal(true, Set[].subset?(Set[]))
end
def test_proper_subset?
set = Set[1,2,3]
assert_raises(ArgumentError) {
set.proper_subset?()
}
assert_raises(ArgumentError) {
set.proper_subset?(2)
}
assert_raises(ArgumentError) {
set.proper_subset?([2])
}
assert_equal(true, set.proper_subset?(Set[1,2,3,4]))
assert_equal(false, set.proper_subset?(Set[1,2,3]))
assert_equal(false, set.proper_subset?(Set[1,2]))
assert_equal(false, set.proper_subset?(Set[]))
assert_equal(false, set < Set[1,2,3])
assert_equal(true, set < Set[1,2,3,4])
assert_equal(false, Set[].proper_subset?(Set[]))
end
def assert_intersect(expected, set, other)
case expected
when true
assert_send([set, :intersect?, other])
assert_send([other, :intersect?, set])
assert_not_send([set, :disjoint?, other])
assert_not_send([other, :disjoint?, set])
when false
assert_not_send([set, :intersect?, other])
assert_not_send([other, :intersect?, set])
assert_send([set, :disjoint?, other])
assert_send([other, :disjoint?, set])
when Class
assert_raises(expected) {
set.intersect?(other)
}
assert_raises(expected) {
set.disjoint?(other)
}
else
raise ArgumentError, "%s: unsupported expected value: %s" % [__method__, expected.inspect]
end
end
def test_intersect?
set = Set[3,4,5]
assert_intersect(ArgumentError, set, 3)
assert_intersect(ArgumentError, set, [2,4,6])
assert_intersect(true, set, Set[2,4])
assert_intersect(true, set, Set[5,6,7])
assert_intersect(true, set, Set[1,2,6,8,4])
assert_intersect(false, set, Set[])
assert_intersect(false, set, Set[0,2])
assert_intersect(false, set, Set[0,2,6])
assert_intersect(false, set, Set[0,2,6,8,10])
end
def test_each
ary = [1,3,5,7,10,20]
set = Set.new(ary)
ret = set.each { |o| }
assert_same(set, ret)
e = set.each
assert_instance_of(Enumerator, e)
assert_nothing_raised {
set.each { |o|
ary.delete(o) or raise "unexpected element: #{o}"
}
ary.empty? or raise "forgotten elements: #{ary.join(', ')}"
}
end
def test_add
set = Set[1,2,3]
ret = set.add(2)
assert_same(set, ret)
assert_equal(Set[1,2,3], set)
ret = set.add?(2)
assert_nil(ret)
assert_equal(Set[1,2,3], set)
ret = set.add(4)
assert_same(set, ret)
assert_equal(Set[1,2,3,4], set)
ret = set.add?(5)
assert_same(set, ret)
assert_equal(Set[1,2,3,4,5], set)
end
def test_delete
set = Set[1,2,3]
ret = set.delete(4)
assert_same(set, ret)
assert_equal(Set[1,2,3], set)
ret = set.delete?(4)
assert_nil(ret)
assert_equal(Set[1,2,3], set)
ret = set.delete(2)
assert_equal(set, ret)
assert_equal(Set[1,3], set)
ret = set.delete?(1)
assert_equal(set, ret)
assert_equal(Set[3], set)
end
def test_delete_if
set = Set.new(1..10)
ret = set.delete_if { |i| i > 10 }
assert_same(set, ret)
assert_equal(Set.new(1..10), set)
set = Set.new(1..10)
ret = set.delete_if { |i| i % 3 == 0 }
assert_same(set, ret)
assert_equal(Set[1,2,4,5,7,8,10], set)
end
def test_keep_if
set = Set.new(1..10)
ret = set.keep_if { |i| i <= 10 }
assert_same(set, ret)
assert_equal(Set.new(1..10), set)
set = Set.new(1..10)
ret = set.keep_if { |i| i % 3 != 0 }
assert_same(set, ret)
assert_equal(Set[1,2,4,5,7,8,10], set)
end
def test_collect!
set = Set[1,2,3,'a','b','c',-1..1,2..4]
ret = set.collect! { |i|
case i
when Numeric
i * 2
when String
i.upcase
else
nil
end
}
assert_same(set, ret)
assert_equal(Set[2,4,6,'A','B','C',nil], set)
end
def test_reject!
set = Set.new(1..10)
ret = set.reject! { |i| i > 10 }
assert_nil(ret)
assert_equal(Set.new(1..10), set)
ret = set.reject! { |i| i % 3 == 0 }
assert_same(set, ret)
assert_equal(Set[1,2,4,5,7,8,10], set)
end
def test_merge
set = Set[1,2,3]
ret = set.merge([2,4,6])
assert_same(set, ret)
assert_equal(Set[1,2,3,4,6], set)
end
def test_subtract
set = Set[1,2,3]
ret = set.subtract([2,4,6])
assert_same(set, ret)
assert_equal(Set[1,3], set)
end
def test_plus
set = Set[1,2,3]
ret = set + [2,4,6]
assert_not_same(set, ret)
assert_equal(Set[1,2,3,4,6], ret)
end
def test_minus
set = Set[1,2,3]
ret = set - [2,4,6]
assert_not_same(set, ret)
assert_equal(Set[1,3], ret)
end
def test_and
set = Set[1,2,3,4]
ret = set & [2,4,6]
assert_not_same(set, ret)
assert_equal(Set[2,4], ret)
end
def test_xor
set = Set[1,2,3,4]
ret = set ^ [2,4,5,5]
assert_not_same(set, ret)
assert_equal(Set[1,3,5], ret)
end
def test_eq
set1 = Set[2,3,1]
set2 = Set[1,2,3]
assert_equal(set1, set1)
assert_equal(set1, set2)
assert_not_equal(Set[1], [1])
set1 = Class.new(Set)["a", "b"]
set2 = Set["a", "b", set1]
set1 = set1.add(set1.clone)
# assert_equal(set1, set2)
# assert_equal(set2, set1)
assert_equal(set2, set2.clone)
assert_equal(set1.clone, set1)
assert_not_equal(Set[Exception.new,nil], Set[Exception.new,Exception.new], "[ruby-dev:26127]")
end
# def test_hash
# end
# def test_eql?
# end
def test_classify
set = Set.new(1..10)
ret = set.classify { |i| i % 3 }
assert_equal(3, ret.size)
assert_instance_of(Hash, ret)
ret.each_value { |value| assert_instance_of(Set, value) }
assert_equal(Set[3,6,9], ret[0])
assert_equal(Set[1,4,7,10], ret[1])
assert_equal(Set[2,5,8], ret[2])
end
def test_divide
set = Set.new(1..10)
ret = set.divide { |i| i % 3 }
assert_equal(3, ret.size)
n = 0
ret.each { |s| n += s.size }
assert_equal(set.size, n)
assert_equal(set, ret.flatten)
set = Set[7,10,5,11,1,3,4,9,0]
ret = set.divide { |a,b| (a - b).abs == 1 }
assert_equal(4, ret.size)
n = 0
ret.each { |s| n += s.size }
assert_equal(set.size, n)
assert_equal(set, ret.flatten)
ret.each { |s|
if s.include?(0)
assert_equal(Set[0,1], s)
elsif s.include?(3)
assert_equal(Set[3,4,5], s)
elsif s.include?(7)
assert_equal(Set[7], s)
elsif s.include?(9)
assert_equal(Set[9,10,11], s)
else
raise "unexpected group: #{s.inspect}"
end
}
end
def test_taintness
orig = set = Set[1,2,3]
assert_equal false, set.tainted?
assert_same orig, set.taint
assert_equal true, set.tainted?
assert_same orig, set.untaint
assert_equal false, set.tainted?
end
def test_freeze
orig = set = Set[1,2,3]
assert_equal false, set.frozen?
set << 4
assert_same orig, set.freeze
assert_equal true, set.frozen?
assert_raises(RuntimeError) {
set << 5
}
assert_equal 4, set.size
end
def test_inspect
set1 = Set[1]
assert_equal('#<Set: {1}>', set1.inspect)
set2 = Set[Set[0], 1, 2, set1]
assert_equal(false, set2.inspect.include?('#<Set: {...}>'))
set1.add(set2)
assert_equal(true, set1.inspect.include?('#<Set: {...}>'))
end
# def test_pretty_print
# end
# def test_pretty_print_cycle
# end
end
class TC_SortedSet < Test::Unit::TestCase
def test_sortedset
s = SortedSet[4,5,3,1,2]
assert_equal([1,2,3,4,5], s.to_a)
prev = nil
s.each { |o| assert(prev < o) if prev; prev = o }
assert_not_nil(prev)
s.map! { |o| -2 * o }
assert_equal([-10,-8,-6,-4,-2], s.to_a)
prev = nil
ret = s.each { |o| assert(prev < o) if prev; prev = o }
assert_not_nil(prev)
assert_same(s, ret)
s = SortedSet.new([2,1,3]) { |o| o * -2 }
assert_equal([-6,-4,-2], s.to_a)
s = SortedSet.new(['one', 'two', 'three', 'four'])
a = []
ret = s.delete_if { |o| a << o; o.start_with?('t') }
assert_same(s, ret)
assert_equal(['four', 'one'], s.to_a)
assert_equal(['four', 'one', 'three', 'two'], a)
s = SortedSet.new(['one', 'two', 'three', 'four'])
a = []
ret = s.reject! { |o| a << o; o.start_with?('t') }
assert_same(s, ret)
assert_equal(['four', 'one'], s.to_a)
assert_equal(['four', 'one', 'three', 'two'], a)
s = SortedSet.new(['one', 'two', 'three', 'four'])
a = []
ret = s.reject! { |o| a << o; false }
assert_same(nil, ret)
assert_equal(['four', 'one', 'three', 'two'], s.to_a)
assert_equal(['four', 'one', 'three', 'two'], a)
end
end
class TC_Enumerable < Test::Unit::TestCase
def test_to_set
ary = [2,5,4,3,2,1,3]
set = ary.to_set
assert_instance_of(Set, set)
assert_equal([1,2,3,4,5], set.sort)
set = ary.to_set { |o| o * -2 }
assert_instance_of(Set, set)
assert_equal([-10,-8,-6,-4,-2], set.sort)
assert_same set, set.to_set
assert_not_same set, set.to_set { |o| o }
set = ary.to_set(SortedSet)
assert_instance_of(SortedSet, set)
assert_equal([1,2,3,4,5], set.to_a)
set = ary.to_set(SortedSet) { |o| o * -2 }
assert_instance_of(SortedSet, set)
assert_equal([-10,-8,-6,-4,-2], set.sort)
end
end
# class TC_RestricedSet < Test::Unit::TestCase
# def test_s_new
# assert_raises(ArgumentError) { RestricedSet.new }
#
# s = RestricedSet.new([-1,2,3]) { |o| o > 0 }
# assert_equal([2,3], s.sort)
# end
#
# def test_restriction_proc
# s = RestricedSet.new([-1,2,3]) { |o| o > 0 }
#
# f = s.restriction_proc
# assert_instance_of(Proc, f)
# assert(f[1])
# assert(!f[0])
# end
#
# def test_replace
# s = RestricedSet.new(-3..3) { |o| o > 0 }
# assert_equal([1,2,3], s.sort)
#
# s.replace([-2,0,3,4,5])
# assert_equal([3,4,5], s.sort)
# end
#
# def test_merge
# s = RestricedSet.new { |o| o > 0 }
# s.merge(-5..5)
# assert_equal([1,2,3,4,5], s.sort)
#
# s.merge([10,-10,-8,8])
# assert_equal([1,2,3,4,5,8,10], s.sort)
# end
# end
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