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# frozen_string_literal: false
require 'test/unit'
class TestVariable < Test::Unit::TestCase
class Gods
@@rule = "Uranus"
def ruler0
@@rule
end
def self.ruler1 # <= per method definition style
@@rule
end
class << self # <= multiple method definition style
def ruler2
@@rule
end
end
end
module Olympians
@@rule ="Zeus"
def ruler3
@@rule
end
end
class Titans < Gods
@@rule = "Cronus" # modifies @@rule in Gods
include Olympians
def ruler4
EnvUtil.suppress_warning {
@@rule
}
end
end
def test_variable
assert_instance_of(Fixnum, $$)
# read-only variable
assert_raise(NameError) do
$$ = 5
end
assert_normal_exit("$*=0; $*", "[ruby-dev:36698]")
foobar = "foobar"
$_ = foobar
assert_equal(foobar, $_)
assert_equal("Cronus", Gods.new.ruler0)
assert_equal("Cronus", Gods.ruler1)
assert_equal("Cronus", Gods.ruler2)
assert_equal("Cronus", Titans.ruler1)
assert_equal("Cronus", Titans.ruler2)
atlas = Titans.new
assert_equal("Cronus", atlas.ruler0)
assert_equal("Zeus", atlas.ruler3)
assert_equal("Cronus", atlas.ruler4)
assert_nothing_raised do
class << Gods
defined?(@@rule) && @@rule
end
end
end
def test_local_variables
lvar = 1
assert_instance_of(Symbol, local_variables[0], "[ruby-dev:34008]")
lvar
end
def test_local_variables2
x = 1
proc do |y|
assert_equal([:x, :y], local_variables.sort)
end.call
x
end
def test_local_variables3
x = 1
proc do |y|
1.times do |z|
assert_equal([:x, :y, :z], local_variables.sort)
end
end.call
x
end
def test_shadowing_local_variables
bug9486 = '[ruby-core:60501] [Bug #9486]'
x = tap {|x| break local_variables}
assert_equal([:x, :bug9486], x)
end
def test_shadowing_block_local_variables
bug9486 = '[ruby-core:60501] [Bug #9486]'
x = tap {|;x| break local_variables}
assert_equal([:x, :bug9486], x)
end
def test_global_variable_0
assert_in_out_err(["-e", "$0='t'*1000;print $0"], "", /\At+\z/, [])
end
def test_global_variable_poped
assert_nothing_raised {
EnvUtil.suppress_warning {
eval("$foo; 1")
}
}
end
def test_constant_poped
assert_nothing_raised {
EnvUtil.suppress_warning {
eval("TestVariable::Gods; 1")
}
}
end
def test_special_constant_ivars
[ true, false, :symbol, "dsym#{rand(9999)}".to_sym, 1, 1.0 ].each do |v|
assert_empty v.instance_variables
msg = "can't modify frozen #{v.class}"
assert_raise_with_message(RuntimeError, msg) do
v.instance_variable_set(:@foo, :bar)
end
assert_nil v.instance_variable_get(:@foo)
refute v.instance_variable_defined?(:@foo)
assert_raise_with_message(RuntimeError, msg) do
v.remove_instance_variable(:@foo)
end
end
end
def test_local_variables_with_kwarg
bug11674 = '[ruby-core:71437] [Bug #11674]'
v = with_kwargs_11(v1:1,v2:2,v3:3,v4:4,v5:5,v6:6,v7:7,v8:8,v9:9,v10:10,v11:11)
assert_equal(%i(v1 v2 v3 v4 v5 v6 v7 v8 v9 v10 v11), v, bug11674)
end
private
def with_kwargs_11(v1:, v2:, v3:, v4:, v5:, v6:, v7:, v8:, v9:, v10:, v11:)
local_variables
end
end
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