1// run
2
3// Copyright 2009 The Go Authors. All rights reserved.
4// Use of this source code is governed by a BSD-style
5// license that can be found in the LICENSE file.
6
7// Test string operations including printing.
8
9package main
10
11func main() {
12	var c string
13
14	a := `abc`
15	b := `xyz`
16
17	/* print a literal */
18	print(`abc`)
19
20	/* print a variable */
21	print(b, "-")
22
23	/* catenate literals */
24	print(`abc`+`xyz`, "-")
25
26	/* catenate variables */
27	print(a+b, "-")
28
29	/* compare literals */
30	if `abc` == `xyz` || `abc` != "abc" || `abc` > `xyz` {
31		panic("compare literals")
32	}
33
34	/* compare variables */
35	if a == b || a != a || a > b {
36		panic("compare variables")
37	}
38
39	/* cat */
40	c = a + b
41	print(c, "-")
42
43	/* catequal */
44	c = a
45	c += b
46	print(c, "-")
47
48	/* clumsy evaluation */
49	c = b
50	c = a + c
51	print(c, "-")
52
53	/* len */
54	if len(c) != 6 {
55		print("len ", len(c))
56		panic("fail")
57	}
58
59	/* index strings */
60	for i := 0; i < len(c); i = i + 1 {
61		if c[i] != (a + b)[i] {
62			print("index ", i, " ", c[i], " ", (a + b)[i])
63			panic("fail")
64		}
65	}
66
67	/* slice strings */
68	print(c[0:3], c[3:])
69
70	print("\n")
71
72	/* create string with integer constant */
73	c = string('x')
74	if c != "x" {
75		panic("create int " + c)
76	}
77
78	/* create string with integer variable */
79	v := 'x'
80	c = string(v)
81	if c != "x" {
82		panic("create int " + c)
83	}
84
85	/* create string with byte array */
86	var z1 [3]byte
87	z1[0] = 'a'
88	z1[1] = 'b'
89	z1[2] = 'c'
90	c = string(z1[0:])
91	if c != "abc" {
92		panic("create byte array " + c)
93	}
94
95	/* create string with int array */
96	var z2 [3]rune
97	z2[0] = 'a'
98	z2[1] = '\u1234'
99	z2[2] = 'c'
100	c = string(z2[0:])
101	if c != "a\u1234c" {
102		panic("create int array " + c)
103	}
104
105	/* create string with byte array pointer */
106	z3 := new([3]byte)
107	z3[0] = 'a'
108	z3[1] = 'b'
109	z3[2] = 'c'
110	c = string(z3[0:])
111	if c != "abc" {
112		panic("create array pointer " + c)
113	}
114}
115