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
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
require 'test/unit'
class TestRubyYield < Test::Unit::TestCase
def test_ary_each
ary = [1]
ary.each {|a, b, c, d| assert_equal [1,nil,nil,nil], [a,b,c,d] }
ary.each {|a, b, c| assert_equal [1,nil,nil], [a,b,c] }
ary.each {|a, b| assert_equal [1,nil], [a,b] }
ary.each {|a| assert_equal 1, a }
end
def test_hash_each
h = {:a => 1}
h.each do |k, v|
assert_equal :a, k
assert_equal 1, v
end
h.each do |k|
assert_equal [:a, 1], k
end
end
def test_yield_0
assert_equal 1, iter0 { 1 }
assert_equal 2, iter0 { 2 }
end
def iter0
yield
end
def test_yield_1
iter1([]) {|a, b| assert_equal [nil,nil], [a, b] }
iter1([1]) {|a, b| assert_equal [1,nil], [a, b] }
iter1([1, 2]) {|a, b| assert_equal [1,2], [a,b] }
iter1([1, 2, 3]) {|a, b| assert_equal [1,2], [a,b] }
iter1([]) {|a| assert_equal [], a }
iter1([1]) {|a| assert_equal [1], a }
iter1([1, 2]) {|a| assert_equal [1,2], a }
iter1([1, 2, 3]) {|a| assert_equal [1,2,3], a }
end
def iter1(args)
yield args
end
def test_yield2
def iter2_1() yield 1, *[2, 3] end
iter2_1 {|a, b, c| assert_equal [1,2,3], [a,b,c] }
def iter2_2() yield 1, *[] end
iter2_2 {|a, b, c| assert_equal [1,nil,nil], [a,b,c] }
def iter2_3() yield 1, *[2] end
iter2_3 {|a, b, c| assert_equal [1,2,nil], [a,b,c] }
end
def test_yield_nested
[[1, [2, 3]]].each {|a, (b, c)|
assert_equal [1,2,3], [a,b,c]
}
[[1, [2, 3]]].map {|a, (b, c)|
assert_equal [1,2,3], [a,b,c]
}
end
end
|
