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1 /*
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2
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3 godc_test.go
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4 Copyright (c) 2014 Tassilo Philipp <tphilipp@potion-studios.com>
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5
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6 Permission to use, copy, modify, and distribute this software for any
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7 purpose with or without fee is hereby granted, provided that the above
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8 copyright notice and this permission notice appear in all copies.
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9
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10 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17
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18 */
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19
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20
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21 package godc
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22
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23 import (
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24 "testing"
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25 "fmt"
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26 "unsafe"
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27 "math"
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28 )
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29
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30 func TestGoDC(t *testing.T) {
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31 lm := new(ExtLib)
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32 if err := lm.Load("/usr/lib/libm.so"); err != nil {
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33 t.FailNow()
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34 }
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35 defer lm.Free()
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36
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37 if err := lm.SymsInit("/usr/lib/libm.so"); err != nil {
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38 t.FailNow()
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39 }
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40 defer lm.SymsCleanup()
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41
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42 fmt.Printf("Testing dl:\n")
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43 fmt.Printf("-----------\n")
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44 fmt.Printf("Loaded library at address: %p\n", lm.lib)
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45 fmt.Printf("C sqrt function at address: %p\n", lm.FindSymbol("sqrt"))
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46 fmt.Printf("C pow function at address: %p\n\n", lm.FindSymbol("pow"))
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47
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48 fmt.Printf("Testing dlSyms:\n")
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49 fmt.Printf("---------------\n")
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50 fmt.Printf("Symbols in libm: %d\n", lm.SymsCount())
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51 fmt.Printf("Symbol name for address %p: %s\n", lm.FindSymbol("pow"), lm.SymsNameFromValue(lm.FindSymbol("pow")))
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52 fmt.Printf("All symbol names in libm:\n")
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53 for i, n := 0, lm.SymsCount(); i<n; i++ {
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54 fmt.Printf(" %s\n", lm.SymsName(i))
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55 }
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56 fmt.Printf("\n")
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57
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58
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59
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60 // Another lib
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61 lc := new(ExtLib)
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62 if err := lc.Load("/usr/lib/libc.so"); err != nil {
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63 t.FailNow()
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64 }
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65 defer lc.Free()
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66
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67 if err := lc.SymsInit("/usr/lib/libc.so"); err != nil {
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68 t.FailNow()
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69 }
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70 defer lc.SymsCleanup()
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71
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72 fmt.Printf("Symbols in libc: %d (not listing them here, too many)\n\n", lc.SymsCount())
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73
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74
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75
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76 // Call some functions
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77 fmt.Printf("Testing dc:\n")
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78 fmt.Printf("-----------\n")
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79 vm := new(CallVM)
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80 if err := vm.InitCallVM(); err != nil {
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81 t.FailNow()
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82 }
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83 defer vm.Free()
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84
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85 vm.Mode(DC_CALL_C_DEFAULT)
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86
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87
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88 // Float
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89 vm.Reset()
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90 vm.ArgFloat(36)
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91 rf := vm.CallFloat(lm.FindSymbol("sqrtf"))
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92 fmt.Printf("sqrtf(36) = %f\n", rf)
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93 if(rf != 6.0) { t.FailNow() }
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94
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95 vm.Reset() // Test reset, reusing VM
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96 vm.ArgDouble(3.6)
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97 rd := vm.CallDouble(lm.FindSymbol("floor"))
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98 fmt.Printf("floor(3.6) = %f\n", rd)
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99 if(rd != 3.0) { t.FailNow() }
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100
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101
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102 // Double
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103 vm.Reset()
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104 vm.ArgDouble(4.2373)
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105 rd = vm.CallDouble(lm.FindSymbol("sqrt"))
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106 fmt.Printf("sqrt(4.2373) = %f\n", rd)
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107 if(math.Abs(rd - 2.05847) > 0.00001) { t.FailNow() }
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108
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109 vm.Reset()
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110 vm.ArgDouble(2.373)
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111 vm.ArgDouble(-1000) // 2 args
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112 rd = vm.CallDouble(lm.FindSymbol("copysign"))
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113 fmt.Printf("copysign(2.373, -1000) = %f\n", rd)
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114 if(rd != -2.373) { t.FailNow() }
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115
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116
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117 // Strings
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118 vm.Reset()
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119 cs1 := vm.AllocCString("/return/only/this_here")
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120 defer vm.FreeCString(cs1)
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121
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122 vm.ArgPointer(cs1)
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123 rs := vm.CallPointerToStr(lc.FindSymbol("basename"))
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124 fmt.Printf("basename(\"/return/only/this_here\") = %s\n", rs)
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125 if(rs != "this_here") { t.FailNow() }
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126 // Reuse path
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127 rs = vm.CallPointerToStr(lc.FindSymbol("dirname"))
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128 fmt.Printf("dirname(\"/return/only/this_here\") = %s\n", rs)
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129 if(rs != "/return/only") { t.FailNow() }
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130
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131
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132 // Integer
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133 vm.Reset()
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134 vm.ArgInt('a')
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135 ri := vm.CallInt(lc.FindSymbol("toupper"))
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136 fmt.Printf("toupper('a') = %c\n", ri)
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137 if(ri != 'A') { t.FailNow() }
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138
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139 vm.Reset()
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140 vm.ArgInt('a')
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141 ri = vm.CallInt(lc.FindSymbol("tolower"))
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142 fmt.Printf("tolower('a') = %c\n", ri)
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143 if(ri != 'a') { t.FailNow() }
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144
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145 vm.Reset()
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146 vm.ArgInt('R')
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147 ri = vm.CallInt(lc.FindSymbol("toupper"))
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148 fmt.Printf("toupper('R') = %c\n", vm.CallInt(lc.FindSymbol("toupper")))
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149 if(ri != 'R') { t.FailNow() }
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150
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151 vm.Reset()
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152 vm.ArgInt('R')
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153 ri = vm.CallInt(lc.FindSymbol("tolower"))
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154 fmt.Printf("tolower('R') = %c\n", vm.CallInt(lc.FindSymbol("tolower")))
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155 if(ri != 'r') { t.FailNow() }
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156
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157
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158 // Integer return
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159 vm.Reset()
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160 cs2 := vm.AllocCString("Tassilo")
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161 defer vm.FreeCString(cs2)
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162
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163 fmt.Printf("rand() = %d\n", vm.CallInt(lc.FindSymbol("rand")))
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164 fmt.Printf("rand() = %d\n", vm.CallInt(lc.FindSymbol("rand")))
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165 fmt.Printf("rand() = %d\n", vm.CallInt(lc.FindSymbol("rand")))
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166 fmt.Printf("rand() = %d\n", vm.CallInt(lc.FindSymbol("rand")))
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167 fmt.Printf("rand() = %d\n", vm.CallInt(lc.FindSymbol("rand")))
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168 vm.ArgPointer(cs2)
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169 ri = vm.CallInt(lc.FindSymbol("strlen"))
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170 fmt.Printf("strlen(\"Tassilo\") = %d\n", ri)
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171 if(ri != 7) { t.FailNow() }
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172
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173
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174 // Formatted - with signature/conversion
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175 vm.Reset()
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176 vm.ArgF("dd)d", 3.14, -2000) // 2 args, second passed as int, but ArgF will convert
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177 rd = vm.CallDouble(lm.FindSymbol("copysign"))
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178 fmt.Printf("dd)d: copysign(3.14, -2000) = %f\n", rd)
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179 if(rd != -3.14) { t.FailNow() }
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180
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181 // Formatted - without signature/conversion
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182 vm.Reset()
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183 vm.ArgF("dd)d", -31.4, 42.4) // 2 args, second passed as int, but ArgF will convert
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184 rd = vm.CallDouble(lm.FindSymbol("copysign"))
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185 fmt.Printf("dd)d: copysign(-31.4, 42.4) = %f\n", rd)
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186 if(rd != 31.4) { t.FailNow() }
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187
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188 // Formatted - use Go's types, pass unsupported type, should return an error
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189 vm.Reset()
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190 err := vm.ArgF_Go(6.14, vm)
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191 fmt.Printf("ArgF_Go: copysign(6.14, <unsupported type>) should return error: %t\n", err != nil)
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192 if(err == nil) { t.FailNow() }
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193
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194 // Formatted - use Go's types
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195 vm.Reset()
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196 vm.ArgF_Go(-61.4, 42.4) // 2 args, both need to be correct or undefined behaviour
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197 rd = vm.CallDouble(lm.FindSymbol("copysign"))
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198 fmt.Printf("copysign(-61.4, 42.4) = %f\n", rd)
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199 if(rd != 61.4) { t.FailNow() }
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200
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201
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202 // Ellipsis
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203 vm.Mode(DC_CALL_C_ELLIPSIS)
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204 vm.Reset()
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205 buf := make([]byte, 1000)
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206 bufPtr := unsafe.Pointer(&buf[0])
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207 cs3 := vm.AllocCString("Four:%d | \"Hello\":%s | Pi:%f")
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208 cs4 := vm.AllocCString("Hello")
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209 defer vm.FreeCString(cs4)
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210 defer vm.FreeCString(cs3)
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211
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212 vm.ArgPointer(bufPtr)
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213 vm.ArgPointer(cs3)
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214 vm.Mode(DC_CALL_C_ELLIPSIS_VARARGS)
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215 vm.ArgInt(4)
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216 vm.ArgPointer(cs4)
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217 vm.ArgDouble(3.14) // Double, b/c of ... promotion rules
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218 ri = vm.CallInt(lc.FindSymbol("sprintf"))
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219 fmt.Printf("sprintf(bufPtr, \"Four:%%d | \\\"Hello\\\":%%s | Pi:%%f\", 4, \"Hello\", 3.14) = %d:\n", ri)
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220 fmt.Printf(" bufPtr: %s\n", string(buf[/*slice printed bytes*/:ri]))
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221 if(ri != 36) { t.FailNow() }
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222
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223
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224 //@@@ untested:
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225 // - ArgF and ArgF_Go with strings
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226 // - ArgF and ArgF_Go with bools
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227 // - ...
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228 }
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229
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