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These generators return `net.IP`, and are also used in generating URLs.
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// Copyright 2020 Walter Scheper <[email protected]> | ||
// | ||
// This Source Code Form is subject to the terms of the Mozilla Public | ||
// License, v. 2.0. If a copy of the MPL was not distributed with this | ||
// file, You can obtain one at https://mozilla.org/MPL/2.0/. | ||
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package rapid | ||
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import ( | ||
"fmt" | ||
"net" | ||
"reflect" | ||
) | ||
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const ( | ||
ipv4Len = 4 | ||
ipv6Len = 16 | ||
) | ||
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var ( | ||
ipType = reflect.TypeOf(net.IP{}) | ||
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ipv4Gen = SliceOfN(Byte(), ipv4Len, ipv4Len) | ||
ipv6Gen = SliceOfN(Byte(), ipv6Len, ipv6Len) | ||
) | ||
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type ipGen struct { | ||
ipv6 bool | ||
} | ||
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func (g *ipGen) String() string { | ||
return fmt.Sprintf("IP(ipv6=%v)", g.ipv6) | ||
} | ||
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func (*ipGen) type_() reflect.Type { | ||
return ipType | ||
} | ||
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func (g *ipGen) value(t *T) value { | ||
var gen *Generator | ||
if g.ipv6 { | ||
gen = ipv6Gen | ||
} else { | ||
gen = ipv4Gen | ||
} | ||
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b := gen.Draw(t, g.String()).([]byte) | ||
return net.IP(b) | ||
} | ||
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func IPv4() *Generator { | ||
return newGenerator(&ipGen{ | ||
ipv6: false, | ||
}) | ||
} | ||
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func IPv6() *Generator { | ||
return newGenerator(&ipGen{ | ||
ipv6: true, | ||
}) | ||
} |
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@@ -0,0 +1,46 @@ | ||
// Copyright 2020 Walter Scheper <[email protected]> | ||
// | ||
// This Source Code Form is subject to the terms of the Mozilla Public | ||
// License, v. 2.0. If a copy of the MPL was not distributed with this | ||
// file, You can obtain one at https://mozilla.org/MPL/2.0/. | ||
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package rapid_test | ||
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import ( | ||
"fmt" | ||
"net" | ||
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"pgregory.net/rapid" | ||
) | ||
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func ExampleIPv4() { | ||
gen := rapid.IPv4() | ||
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for i := 0; i < 5; i++ { | ||
addr := gen.Example(i).(net.IP) | ||
fmt.Println(addr.String()) | ||
} | ||
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// Output: | ||
// 0.23.24.7 | ||
// 100.146.0.0 | ||
// 0.222.65.1 | ||
// 1.49.104.14 | ||
// 11.56.0.83 | ||
} | ||
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func ExampleIPv6() { | ||
gen := rapid.IPv6() | ||
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for i := 0; i < 5; i++ { | ||
addr := gen.Example(i).(net.IP) | ||
fmt.Println(addr.String()) | ||
} | ||
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// Output: | ||
// 17:1807:e2c4:8210:7202:f4b2:a0e2:8dc | ||
// 6492:0:fa37:b00:b5c3:4e6:6a01:c802 | ||
// de:4101:9f5:3:104:5dc:b600:905 | ||
// 131:680e:97ff:d200:ae1:4d00:2300:103 | ||
// b38:53:ff07:200:8c28:ee:ad00:1b | ||
} |
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