1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
#require 'facets/kernel/instance_exec.rb'
require 'facets/one_nine.rb'
require 'test/unit'
class TestInstanceEvalWithArgs < Test::Unit::TestCase
class Dummy
def f
:dummy_value
end
end
def test_instance_exec
# Create a block that returns the value of an argument
# and a value of a method call to +self+.
block = lambda { |a| [a, f] }
assert_equal [:arg_value, :dummy_value],
Dummy.new.instance_exec(:arg_value, &block)
end
def test_instance_exec_with_frozen_obj
block = lambda { |a| [a, f] }
obj = Dummy.new
obj.freeze
assert_equal [:arg_value, :dummy_value], obj.instance_exec(:arg_value, &block)
end
def test_instance_exec_nested
i = 0
obj = Dummy.new
block = lambda do |arg|
[arg] + instance_exec(1){|a| [f, a] }
end
assert_equal([:arg_value, :dummy_value, 1], obj.instance_exec(:arg_value, &block))
end
def test_instance_exec_with_immediate_value
obj = 1
block = lambda { |a| [a,self] }
assert_equal(["A", 1], obj.instance_exec("A", &block))
end
end
|
