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package cidr
import (
"fmt"
"testing"
"github.com/zclconf/go-cty/cty"
)
func TestSubnet(t *testing.T) {
tests := []struct {
Prefix cty.Value
Newbits cty.Value
Netnum cty.Value
Want cty.Value
Err bool
}{
{
cty.StringVal("192.168.2.0/20"),
cty.NumberIntVal(4),
cty.NumberIntVal(6),
cty.StringVal("192.168.6.0/24"),
false,
},
{
cty.StringVal("fe80::/48"),
cty.NumberIntVal(16),
cty.NumberIntVal(6),
cty.StringVal("fe80:0:0:6::/64"),
false,
},
{ // IPv4 address encoded in IPv6 syntax gets normalized
cty.StringVal("::ffff:192.168.0.0/112"),
cty.NumberIntVal(8),
cty.NumberIntVal(6),
cty.StringVal("192.168.6.0/24"),
false,
},
{ // not enough bits left
cty.StringVal("192.168.0.0/30"),
cty.NumberIntVal(4),
cty.NumberIntVal(6),
cty.UnknownVal(cty.String),
true,
},
{ // can't encode 16 in 2 bits
cty.StringVal("192.168.0.0/168"),
cty.NumberIntVal(2),
cty.NumberIntVal(16),
cty.StringVal("fe80:0:0:6::/64"),
true,
},
{ // not a valid CIDR mask
cty.StringVal("not-a-cidr"),
cty.NumberIntVal(4),
cty.NumberIntVal(6),
cty.StringVal("fe80:0:0:6::/64"),
true,
},
{ // can't have an octet >255
cty.StringVal("10.256.0.0/8"),
cty.NumberIntVal(4),
cty.NumberIntVal(6),
cty.StringVal("fe80:0:0:6::/64"),
true,
},
}
for _, test := range tests {
t.Run(fmt.Sprintf("cidrsubnet(%#v, %#v, %#v)", test.Prefix, test.Newbits, test.Netnum), func(t *testing.T) {
got, err := Subnet(test.Prefix, test.Newbits, test.Netnum)
if test.Err {
if err == nil {
t.Fatal("succeeded; want error")
}
return
} else if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if !got.RawEquals(test.Want) {
t.Errorf("wrong result\ngot: %#v\nwant: %#v", got, test.Want)
}
})
}
}
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