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 $SAFE = 4 o.a = 2 end.value end end def test_set klass = Struct.new(:a) o = klass.new(1) o[:a] = 2 assert_equal(2, o[:a]) assert_raise(NameError) { o[:b] = 3 } end def test_struct_new assert_raise(NameError) { Struct.new("foo") } assert_nothing_raised { Struct.new("Foo") } Struct.instance_eval { remove_const(:Foo) } assert_nothing_raised { Struct.new(:a) { } } assert_raise(RuntimeError) { Struct.new(:a) { raise } } assert_equal([:utime, :stime, :cutime, :cstime], Process.times.members) end def test_initialize klass = Struct.new(:a) assert_raise(ArgumentError) { klass.new(1, 2) } end def test_each klass = Struct.new(:a, :b) o = klass.new(1, 2) assert_equal([1, 2], o.each.to_a) end def test_each_pair klass = Struct.new(:a, :b) o = klass.new(1, 2) assert_equal([[:a, 1], [:b, 2]], o.each_pair.to_a) end def test_inspect klass = Struct.new(:a) o = klass.new(1) assert_equal("#", o.inspect) o.a = o assert_match(/^#:...>>$/, o.inspect) Struct.new("Foo", :a) o = Struct::Foo.new(1) assert_equal("#", o.inspect) Struct.instance_eval { remove_const(:Foo) } klass = Struct.new(:a, :b) o = klass.new(1, 2) assert_equal("#", o.inspect) klass = Struct.new(:@a) o = klass.new(1) assert_equal("#", 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 def test_nonascii struct_test = Struct.new("R\u{e9}sum\u{e9}", :"r\u{e9}sum\u{e9}") assert_equal(Struct.const_get("R\u{e9}sum\u{e9}"), struct_test, '[ruby-core:24849]') a = struct_test.new(42) assert_equal("#", a.inspect, '[ruby-core:24849]') end end