1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
10 #![allow(unsigned_negation)]
15 fn test_format_int() {
16 // Formatting integers should select the right implementation based off
17 // the type of the argument. Also, hex/octal/binary should be defined
18 // for integers, but they shouldn't emit the negative sign.
19 assert!(format!("{}", 1i) == "1");
20 assert!(format!("{}", 1i8) == "1");
21 assert!(format!("{}", 1i16) == "1");
22 assert!(format!("{}", 1i32) == "1");
23 assert!(format!("{}", 1i64) == "1");
24 assert!(format!("{}", -1i) == "-1");
25 assert!(format!("{}", -1i8) == "-1");
26 assert!(format!("{}", -1i16) == "-1");
27 assert!(format!("{}", -1i32) == "-1");
28 assert!(format!("{}", -1i64) == "-1");
29 assert!(format!("{:b}", 1i) == "1");
30 assert!(format!("{:b}", 1i8) == "1");
31 assert!(format!("{:b}", 1i16) == "1");
32 assert!(format!("{:b}", 1i32) == "1");
33 assert!(format!("{:b}", 1i64) == "1");
34 assert!(format!("{:x}", 1i) == "1");
35 assert!(format!("{:x}", 1i8) == "1");
36 assert!(format!("{:x}", 1i16) == "1");
37 assert!(format!("{:x}", 1i32) == "1");
38 assert!(format!("{:x}", 1i64) == "1");
39 assert!(format!("{:X}", 1i) == "1");
40 assert!(format!("{:X}", 1i8) == "1");
41 assert!(format!("{:X}", 1i16) == "1");
42 assert!(format!("{:X}", 1i32) == "1");
43 assert!(format!("{:X}", 1i64) == "1");
44 assert!(format!("{:o}", 1i) == "1");
45 assert!(format!("{:o}", 1i8) == "1");
46 assert!(format!("{:o}", 1i16) == "1");
47 assert!(format!("{:o}", 1i32) == "1");
48 assert!(format!("{:o}", 1i64) == "1");
50 assert!(format!("{}", 1u) == "1");
51 assert!(format!("{}", 1u8) == "1");
52 assert!(format!("{}", 1u16) == "1");
53 assert!(format!("{}", 1u32) == "1");
54 assert!(format!("{}", 1u64) == "1");
55 assert!(format!("{:b}", 1u) == "1");
56 assert!(format!("{:b}", 1u8) == "1");
57 assert!(format!("{:b}", 1u16) == "1");
58 assert!(format!("{:b}", 1u32) == "1");
59 assert!(format!("{:b}", 1u64) == "1");
60 assert!(format!("{:x}", 1u) == "1");
61 assert!(format!("{:x}", 1u8) == "1");
62 assert!(format!("{:x}", 1u16) == "1");
63 assert!(format!("{:x}", 1u32) == "1");
64 assert!(format!("{:x}", 1u64) == "1");
65 assert!(format!("{:X}", 1u) == "1");
66 assert!(format!("{:X}", 1u8) == "1");
67 assert!(format!("{:X}", 1u16) == "1");
68 assert!(format!("{:X}", 1u32) == "1");
69 assert!(format!("{:X}", 1u64) == "1");
70 assert!(format!("{:o}", 1u) == "1");
71 assert!(format!("{:o}", 1u8) == "1");
72 assert!(format!("{:o}", 1u16) == "1");
73 assert!(format!("{:o}", 1u32) == "1");
74 assert!(format!("{:o}", 1u64) == "1");
76 // Test a larger number
77 assert!(format!("{:b}", 55i) == "110111");
78 assert!(format!("{:o}", 55i) == "67");
79 assert!(format!("{}", 55i) == "55");
80 assert!(format!("{:x}", 55i) == "37");
81 assert!(format!("{:X}", 55i) == "37");
85 fn test_format_int_zero() {
86 assert!(format!("{}", 0i) == "0");
87 assert!(format!("{:b}", 0i) == "0");
88 assert!(format!("{:o}", 0i) == "0");
89 assert!(format!("{:x}", 0i) == "0");
90 assert!(format!("{:X}", 0i) == "0");
92 assert!(format!("{}", 0u) == "0");
93 assert!(format!("{:b}", 0u) == "0");
94 assert!(format!("{:o}", 0u) == "0");
95 assert!(format!("{:x}", 0u) == "0");
96 assert!(format!("{:X}", 0u) == "0");
100 fn test_format_int_flags() {
101 assert!(format!("{:3}", 1i) == " 1");
102 assert!(format!("{:>3}", 1i) == " 1");
103 assert!(format!("{:>+3}", 1i) == " +1");
104 assert!(format!("{:<3}", 1i) == "1 ");
105 assert!(format!("{:#}", 1i) == "1");
106 assert!(format!("{:#x}", 10i) == "0xa");
107 assert!(format!("{:#X}", 10i) == "0xA");
108 assert!(format!("{:#5x}", 10i) == " 0xa");
109 assert!(format!("{:#o}", 10i) == "0o12");
110 assert!(format!("{:08x}", 10i) == "0000000a");
111 assert!(format!("{:8x}", 10i) == " a");
112 assert!(format!("{:<8x}", 10i) == "a ");
113 assert!(format!("{:>8x}", 10i) == " a");
114 assert!(format!("{:#08x}", 10i) == "0x00000a");
115 assert!(format!("{:08}", -10i) == "-0000010");
116 assert!(format!("{:x}", -1u8) == "ff");
117 assert!(format!("{:X}", -1u8) == "FF");
118 assert!(format!("{:b}", -1u8) == "11111111");
119 assert!(format!("{:o}", -1u8) == "377");
120 assert!(format!("{:#x}", -1u8) == "0xff");
121 assert!(format!("{:#X}", -1u8) == "0xFF");
122 assert!(format!("{:#b}", -1u8) == "0b11111111");
123 assert!(format!("{:#o}", -1u8) == "0o377");
127 fn test_format_int_sign_padding() {
128 assert!(format!("{:+5}", 1i) == " +1");
129 assert!(format!("{:+5}", -1i) == " -1");
130 assert!(format!("{:05}", 1i) == "00001");
131 assert!(format!("{:05}", -1i) == "-0001");
132 assert!(format!("{:+05}", 1i) == "+0001");
133 assert!(format!("{:+05}", -1i) == "-0001");
137 fn test_format_int_twos_complement() {
138 use core::{i8, i16, i32, i64};
139 assert!(format!("{}", i8::MIN) == "-128");
140 assert!(format!("{}", i16::MIN) == "-32768");
141 assert!(format!("{}", i32::MIN) == "-2147483648");
142 assert!(format!("{}", i64::MIN) == "-9223372036854775808");
146 fn test_format_radix() {
147 assert!(format!("{:04}", radix(3i, 2)) == "0011");
148 assert!(format!("{}", radix(55i, 36)) == "1j");
153 fn test_radix_base_too_large() {
154 let _ = radix(55i, 37);
159 use core::fmt::radix;
160 use std::rand::{weak_rng, Rng};
163 fn format_bin(b: &mut Bencher) {
164 let mut rng = weak_rng();
165 b.iter(|| { format!("{:b}", rng.gen::<uint>()); })
169 fn format_oct(b: &mut Bencher) {
170 let mut rng = weak_rng();
171 b.iter(|| { format!("{:o}", rng.gen::<uint>()); })
175 fn format_dec(b: &mut Bencher) {
176 let mut rng = weak_rng();
177 b.iter(|| { format!("{}", rng.gen::<uint>()); })
181 fn format_hex(b: &mut Bencher) {
182 let mut rng = weak_rng();
183 b.iter(|| { format!("{:x}", rng.gen::<uint>()); })
187 fn format_base_36(b: &mut Bencher) {
188 let mut rng = weak_rng();
189 b.iter(|| { format!("{}", radix(rng.gen::<uint>(), 36)); })
195 use core::fmt::radix;
196 use std::rand::{weak_rng, Rng};
199 fn format_bin(b: &mut Bencher) {
200 let mut rng = weak_rng();
201 b.iter(|| { format!("{:b}", rng.gen::<int>()); })
205 fn format_oct(b: &mut Bencher) {
206 let mut rng = weak_rng();
207 b.iter(|| { format!("{:o}", rng.gen::<int>()); })
211 fn format_dec(b: &mut Bencher) {
212 let mut rng = weak_rng();
213 b.iter(|| { format!("{}", rng.gen::<int>()); })
217 fn format_hex(b: &mut Bencher) {
218 let mut rng = weak_rng();
219 b.iter(|| { format!("{:x}", rng.gen::<int>()); })
223 fn format_base_36(b: &mut Bencher) {
224 let mut rng = weak_rng();
225 b.iter(|| { format!("{}", radix(rng.gen::<int>(), 36)); })