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# -*- coding: us-ascii -*-
# frozen_string_literal: false
require 'test/unit'
require 'timeout'
class TestData < Test::Unit::TestCase
def test_define
klass = Data.define(:foo, :bar)
assert_kind_of(Class, klass)
assert_equal(%i[foo bar], klass.members)
assert_raise(NoMethodError) { Data.new(:foo) }
assert_raise(TypeError) { Data.define(0) }
# Because some code is shared with Struct, check we don't share unnecessary functionality
assert_raise(TypeError) { Data.define(:foo, keyword_init: true) }
assert_not_respond_to(Data.define, :define, "Cannot define from defined Data class")
end
def test_define_edge_cases
# non-ascii
klass = Data.define(:"r\u{e9}sum\u{e9}")
o = klass.new(1)
assert_equal(1, o.send(:"r\u{e9}sum\u{e9}"))
# junk string
klass = Data.define(:"a\000")
o = klass.new(1)
assert_equal(1, o.send(:"a\000"))
# special characters in attribute names
klass = Data.define(:a, :b?)
x = Object.new
o = klass.new("test", x)
assert_same(x, o.b?)
klass = Data.define(:a, :b!)
x = Object.new
o = klass.new("test", x)
assert_same(x, o.b!)
assert_raise(ArgumentError) { Data.define(:x=) }
assert_raise(ArgumentError, /duplicate member/) { Data.define(:x, :x) }
end
def test_define_with_block
klass = Data.define(:a, :b) do
def c
a + b
end
end
assert_equal(3, klass.new(1, 2).c)
end
def test_initialize
klass = Data.define(:foo, :bar)
# Regular
test = klass.new(1, 2)
assert_equal(1, test.foo)
assert_equal(2, test.bar)
assert_equal(test, klass.new(1, 2))
# Keywords
test_kw = klass.new(foo: 1, bar: 2)
assert_equal(1, test_kw.foo)
assert_equal(2, test_kw.bar)
assert_equal(test_kw, klass.new(foo: 1, bar: 2))
assert_equal(test_kw, test)
# Wrong protocol
assert_raise(ArgumentError) { klass.new(1) }
assert_raise(ArgumentError) { klass.new(1, 2, 3) }
assert_raise(ArgumentError) { klass.new(foo: 1) }
assert_raise(ArgumentError) { klass.new(foo: 1, bar: 2, baz: 3) }
# Could be converted to foo: 1, bar: 2, but too smart is confusing
assert_raise(ArgumentError) { klass.new(1, bar: 2) }
end
def test_initialize_redefine
klass = Data.define(:foo, :bar) do
attr_reader :passed
def initialize(*args, **kwargs)
@passed = [args, kwargs]
super(foo: 1, bar: 2) # so we can experiment with passing wrong numbers of args
end
end
assert_equal([[], {foo: 1, bar: 2}], klass.new(foo: 1, bar: 2).passed)
# Positional arguments are converted to keyword ones
assert_equal([[], {foo: 1, bar: 2}], klass.new(1, 2).passed)
# Missing arguments can be fixed in initialize
assert_equal([[], {foo: 1}], klass.new(foo: 1).passed)
# Extra keyword arguments can be dropped in initialize
assert_equal([[], {foo: 1, bar: 2, baz: 3}], klass.new(foo: 1, bar: 2, baz: 3).passed)
end
def test_instance_behavior
klass = Data.define(:foo, :bar)
test = klass.new(1, 2)
assert_equal(1, test.foo)
assert_equal(2, test.bar)
assert_equal(%i[foo bar], test.members)
assert_equal(1, test.public_send(:foo))
assert_equal(0, test.method(:foo).arity)
assert_equal([], test.method(:foo).parameters)
assert_equal({foo: 1, bar: 2}, test.to_h)
assert_equal({"foo"=>"1", "bar"=>"2"}, test.to_h { [_1.to_s, _2.to_s] })
assert_equal({foo: 1, bar: 2}, test.deconstruct_keys(nil))
assert_equal({foo: 1}, test.deconstruct_keys(%i[foo]))
assert_equal({foo: 1}, test.deconstruct_keys(%i[foo baz]))
assert_raise(TypeError) { test.deconstruct_keys(0) }
assert_kind_of(Integer, test.hash)
end
def test_inspect
klass = Data.define(:a)
o = klass.new(1)
assert_equal("#<data a=1>", o.inspect)
Object.const_set(:Foo, klass)
assert_equal("#<data Foo a=1>", o.inspect)
Object.instance_eval { remove_const(:Foo) }
klass = Data.define(:@a)
o = klass.new(1)
assert_equal("#<data :@a=1>", o.inspect)
end
def test_equal
klass1 = Data.define(:a)
klass2 = Data.define(:a)
o1 = klass1.new(1)
o2 = klass1.new(1)
o3 = klass2.new(1)
assert_equal(o1, o2)
assert_not_equal(o1, o3)
end
def test_eql
klass1 = Data.define(:a)
klass2 = Data.define(:a)
o1 = klass1.new(1)
o2 = klass1.new(1)
o3 = klass2.new(1)
assert_operator(o1, :eql?, o2)
assert_not_operator(o1, :eql?, o3)
end
def test_memberless
klass = Data.define
test = klass.new
assert_equal(klass.new, test)
assert_not_equal(Data.define.new, test)
assert_equal('#<data >', test.inspect)
assert_equal([], test.members)
assert_equal({}, test.to_h)
end
end
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