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require 'test/unit'
class TestStruct < Test::Unit::TestCase
def test_struct
struct_test = Struct.new("Test", :foo, :bar)
assert_equal(Struct::Test, struct_test)
test = struct_test.new(1, 2)
assert_equal(1, test.foo)
assert_equal(2, test.bar)
assert_equal(1, test[0])
assert_equal(2, test[1])
a, b = test.to_a
assert_equal(1, a)
assert_equal(2, b)
test[0] = 22
assert_equal(22, test.foo)
test.bar = 47
assert_equal(47, test.bar)
end
# [ruby-dev:26247] more than 10 struct members causes segmentation fault
def test_morethan10members
list = %w( a b c d e f g h i j k l m n o p )
until list.empty?
c = Struct.new(* list.map {|ch| ch.intern }).new
list.each do |ch|
c.__send__(ch)
end
list.pop
end
end
def test_small_structs
names = [:a, :b, :c, :d]
1.upto(4) {|n|
fields = names[0, n]
klass = Struct.new(*fields)
o = klass.new(*(0...n).to_a)
fields.each_with_index {|name, i|
assert_equal(i, o[name])
}
o = klass.new(*(0...n).to_a.reverse)
fields.each_with_index {|name, i|
assert_equal(n-i-1, o[name])
}
}
end
def test_inherit
klass = Struct.new(:a)
klass2 = Class.new(klass)
o = klass2.new(1)
assert_equal(1, o.a)
end
def test_members
klass = Struct.new(:a)
o = klass.new(1)
assert_equal([:a], klass.members)
assert_equal([:a], o.members)
end
def test_ref
klass = Struct.new(:a)
o = klass.new(1)
assert_equal(1, o[:a])
assert_raise(NameError) { o[:b] }
end
def test_modify
klass = Struct.new(:a)
o = klass.new(1)
assert_raise(SecurityError) do
Thread.new do
$SAFE = 4
o.a = 2
end.value
end
end
def test_set
klass = Struct.new(:a)
o = klass.new(1)
o[:a] = 2
assert_equal(2, o[:a])
assert_raise(NameError) { o[:b] = 3 }
end
def test_struct_new
assert_raise(NameError) { Struct.new("foo") }
assert_nothing_raised { Struct.new("Foo") }
Struct.instance_eval { remove_const(:Foo) }
assert_nothing_raised { Struct.new(:a) { } }
assert_raise(RuntimeError) { Struct.new(:a) { raise } }
assert_equal([:utime, :stime, :cutime, :cstime], Process.times.members)
end
def test_initialize
klass = Struct.new(:a)
assert_raise(ArgumentError) { klass.new(1, 2) }
end
def test_each
klass = Struct.new(:a, :b)
o = klass.new(1, 2)
assert_equal([1, 2], o.each.to_a)
end
def test_each_pair
klass = Struct.new(:a, :b)
o = klass.new(1, 2)
assert_equal([[:a, 1], [:b, 2]], o.each_pair.to_a)
end
def test_inspect
klass = Struct.new(:a)
o = klass.new(1)
assert_equal("#<struct a=1>", o.inspect)
o.a = o
assert(o.inspect =~ /^#<struct a=#<struct #<.*?>:...>>$/)
Struct.new("Foo", :a)
o = Struct::Foo.new(1)
assert_equal("#<struct Struct::Foo a=1>", o.inspect)
Struct.instance_eval { remove_const(:Foo) }
klass = Struct.new(:a, :b)
o = klass.new(1, 2)
assert_equal("#<struct a=1, b=2>", o.inspect)
klass = Struct.new(:@a)
o = klass.new(1)
assert_equal("#<struct :@a=1>", o.inspect)
end
def test_init_copy
klass = Struct.new(:a)
o = klass.new(1)
assert_equal(o, o.dup)
end
def test_aref
klass = Struct.new(:a)
o = klass.new(1)
assert_equal(1, o[0])
assert_raise(IndexError) { o[-2] }
assert_raise(IndexError) { o[1] }
end
def test_aset
klass = Struct.new(:a)
o = klass.new(1)
o[0] = 2
assert_equal(2, o[:a])
assert_raise(IndexError) { o[-2] = 3 }
assert_raise(IndexError) { o[1] = 3 }
end
def test_values_at
klass = Struct.new(:a, :b, :c, :d, :e, :f)
o = klass.new(1, 2, 3, 4, 5, 6)
assert_equal([2, 4, 6], o.values_at(1, 3, 5))
assert_equal([2, 3, 4, 3, 4, 5], o.values_at(1..3, 2...5))
end
def test_select
klass = Struct.new(:a, :b, :c, :d, :e, :f)
o = klass.new(1, 2, 3, 4, 5, 6)
assert_equal([1, 3, 5], o.select {|v| v % 2 != 0 })
assert_raise(ArgumentError) { o.select(1) }
end
def test_equal
klass1 = Struct.new(:a)
klass2 = Struct.new(:a, :b)
o1 = klass1.new(1)
o2 = klass1.new(1)
o3 = klass2.new(1)
assert(o1.==(o2))
assert(o1 != o3)
end
def test_hash
klass = Struct.new(:a)
o = klass.new(1)
assert(o.hash.is_a?(Fixnum))
end
def test_eql
klass1 = Struct.new(:a)
klass2 = Struct.new(:a, :b)
o1 = klass1.new(1)
o2 = klass1.new(1)
o3 = klass2.new(1)
assert(o1.eql?(o2))
assert(!(o1.eql?(o3)))
end
def test_size
klass = Struct.new(:a)
o = klass.new(1)
assert_equal(1, o.size)
end
def test_error
assert_raise(TypeError){
Struct.new(0)
}
end
end
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