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      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 interfaces on basic types.
      8 
      9 package main
     10 
     11 type myint int
     12 type mystring string
     13 type I0 interface{}
     14 
     15 func f() {
     16 	var ia, ib I0
     17 	var i myint
     18 	var s mystring
     19 
     20 	if ia != ib {
     21 		panic("1")
     22 	}
     23 
     24 	i = 1
     25 	ia = i
     26 	ib = i
     27 	if ia != ib {
     28 		panic("2")
     29 	}
     30 	if ia == nil {
     31 		panic("3")
     32 	}
     33 
     34 	i = 2
     35 	ia = i
     36 	if ia == ib {
     37 		panic("4")
     38 	}
     39 
     40 	ia = nil
     41 	if ia == ib {
     42 		panic("5")
     43 	}
     44 
     45 	ib = nil
     46 	if ia != ib {
     47 		panic("6")
     48 	}
     49 
     50 	if ia != nil {
     51 		panic("7")
     52 	}
     53 
     54 	s = "abc"
     55 	ia = s
     56 	ib = nil
     57 	if ia == ib {
     58 		panic("8")
     59 	}
     60 
     61 	s = "def"
     62 	ib = s
     63 	if ia == ib {
     64 		panic("9")
     65 	}
     66 
     67 	s = "abc"
     68 	ib = s
     69 	if ia != ib {
     70 		panic("a")
     71 	}
     72 }
     73 
     74 func main() {
     75 	var ia [20]I0
     76 	var b bool
     77 	var s string
     78 	var i8 int8
     79 	var i16 int16
     80 	var i32 int32
     81 	var i64 int64
     82 	var u8 uint8
     83 	var u16 uint16
     84 	var u32 uint32
     85 	var u64 uint64
     86 
     87 	f()
     88 
     89 	ia[0] = "xxx"
     90 	ia[1] = 12345
     91 	ia[2] = true
     92 
     93 	s = "now is"
     94 	ia[3] = s
     95 	b = false
     96 	ia[4] = b
     97 
     98 	i8 = 29
     99 	ia[5] = i8
    100 	i16 = 994
    101 	ia[6] = i16
    102 	i32 = 3434
    103 	ia[7] = i32
    104 	i64 = 1234567
    105 	ia[8] = i64
    106 
    107 	u8 = 12
    108 	ia[9] = u8
    109 	u16 = 799
    110 	ia[10] = u16
    111 	u32 = 4455
    112 	ia[11] = u32
    113 	u64 = 765432
    114 	ia[12] = u64
    115 
    116 	s = ia[0].(string)
    117 	if s != "xxx" {
    118 		println(0, s)
    119 		panic("fail")
    120 	}
    121 	i32 = int32(ia[1].(int))
    122 	if i32 != 12345 {
    123 		println(1, i32)
    124 		panic("fail")
    125 	}
    126 	b = ia[2].(bool)
    127 	if b != true {
    128 		println(2, b)
    129 		panic("fail")
    130 	}
    131 
    132 	s = ia[3].(string)
    133 	if s != "now is" {
    134 		println(3, s)
    135 		panic("fail")
    136 	}
    137 	b = ia[4].(bool)
    138 	if b != false {
    139 		println(4, b)
    140 		panic("fail")
    141 	}
    142 
    143 	i8 = ia[5].(int8)
    144 	if i8 != 29 {
    145 		println(5, i8)
    146 		panic("fail")
    147 	}
    148 	i16 = ia[6].(int16)
    149 	if i16 != 994 {
    150 		println(6, i16)
    151 		panic("fail")
    152 	}
    153 	i32 = ia[7].(int32)
    154 	if i32 != 3434 {
    155 		println(7, i32)
    156 		panic("fail")
    157 	}
    158 	i64 = ia[8].(int64)
    159 	if i64 != 1234567 {
    160 		println(8, i64)
    161 		panic("fail")
    162 	}
    163 
    164 	u8 = ia[9].(uint8)
    165 	if u8 != 12 {
    166 		println(5, u8)
    167 		panic("fail")
    168 	}
    169 	u16 = ia[10].(uint16)
    170 	if u16 != 799 {
    171 		println(6, u16)
    172 		panic("fail")
    173 	}
    174 	u32 = ia[11].(uint32)
    175 	if u32 != 4455 {
    176 		println(7, u32)
    177 		panic("fail")
    178 	}
    179 	u64 = ia[12].(uint64)
    180 	if u64 != 765432 {
    181 		println(8, u64)
    182 		panic("fail")
    183 	}
    184 }
    185