1#assert('Kernel.sprintf') do
2#end
3
4assert('String#%') do
5  assert_equal "one=1", "one=%d" % 1
6  assert_equal "1 one", "%d %s" % [ 1, "one" ]
7  assert_equal "123 < 456", "%{num} < %<str>s" % { num: 123, str: "456" }
8  assert_equal 15, ("%b" % (1<<14)).size
9  skip unless Object.const_defined?(:Float)
10  assert_equal "1.0", "%3.1f" % 1.01
11end
12
13assert('String#% with inf') do
14  skip unless Object.const_defined?(:Float)
15  inf = Float::INFINITY
16
17  assert_equal "Inf", "%f" % inf
18  assert_equal "Inf", "%2f" % inf
19  assert_equal "Inf", "%3f" % inf
20  assert_equal " Inf", "%4f" % inf
21  assert_equal "  Inf", "%5f" % inf
22
23  assert_equal "+Inf", "%+f" % inf
24  assert_equal "+Inf", "%+2f" % inf
25  assert_equal "+Inf", "%+3f" % inf
26  assert_equal "+Inf", "%+4f" % inf
27  assert_equal " +Inf", "%+5f" % inf
28
29  assert_equal "Inf", "%-f" % inf
30  assert_equal "Inf", "%-2f" % inf
31  assert_equal "Inf", "%-3f" % inf
32  assert_equal "Inf ", "%-4f" % inf
33  assert_equal "Inf  ", "%-5f" % inf
34
35  assert_equal " Inf", "% f" % inf
36  assert_equal " Inf", "% 2f" % inf
37  assert_equal " Inf", "% 3f" % inf
38  assert_equal " Inf", "% 4f" % inf
39  assert_equal "  Inf", "% 5f" % inf
40end
41
42assert('String#% with nan') do
43  skip unless Object.const_defined?(:Float)
44  nan = Float::NAN
45
46  assert_equal "NaN", "%f" % nan
47  assert_equal "NaN", "%2f" % nan
48  assert_equal "NaN", "%3f" % nan
49  assert_equal " NaN", "%4f" % nan
50  assert_equal "  NaN", "%5f" % nan
51
52  assert_equal "+NaN", "%+f" % nan
53  assert_equal "+NaN", "%+2f" % nan
54  assert_equal "+NaN", "%+3f" % nan
55  assert_equal "+NaN", "%+4f" % nan
56  assert_equal " +NaN", "%+5f" % nan
57
58  assert_equal "NaN", "%-f" % nan
59  assert_equal "NaN", "%-2f" % nan
60  assert_equal "NaN", "%-3f" % nan
61  assert_equal "NaN ", "%-4f" % nan
62  assert_equal "NaN  ", "%-5f" % nan
63
64  assert_equal " NaN", "% f" % nan
65  assert_equal " NaN", "% 2f" % nan
66  assert_equal " NaN", "% 3f" % nan
67  assert_equal " NaN", "% 4f" % nan
68  assert_equal "  NaN", "% 5f" % nan
69end
70
71assert("String#% with invalid chr") do
72  begin
73    class Fixnum
74      alias_method :chr_, :chr if method_defined?(:chr)
75
76      def chr
77        nil
78      end
79    end
80
81    assert_raise TypeError do
82      "%c" % 0x80
83    end
84  ensure
85    class Fixnum
86      if method_defined?(:chr_)
87        alias_method :chr, :chr_
88        remove_method :chr_
89      end
90    end
91  end
92end
93
94assert("String#% %b") do
95  assert_equal("..10115", "%0b5" % -5)
96end
97
98assert("String#% %d") do
99  assert_equal("  10",   "%4d" % 10)
100  assert_equal("1000",   "%4d" % 1000)
101  assert_equal("10000",  "%4d" % 10000)
102end
103
104assert("String#% invalid format") do
105  assert_raise ArgumentError do
106    "%?" % ""
107  end
108end
109
110assert("String#% invalid format shared substring") do
111  fmt = ("x"*30+"%!")[0...-1]
112  assert_equal fmt, sprintf(fmt, "")
113end
114