162dca6eeb
Add a low-allocation canonical sorting function that can be used in middleware. This implements the tests from rfc4034 correctly.
72 lines
2.1 KiB
Go
72 lines
2.1 KiB
Go
package middleware
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import (
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"sort"
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"testing"
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)
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type set []string
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func (p set) Len() int { return len(p) }
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func (p set) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
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func (p set) Less(i, j int) bool { d := Less(p[i], p[j]); return d <= 0 }
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func TestLess(t *testing.T) {
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tests := []struct {
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in []string
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out []string
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}{
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{
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[]string{"aaa.powerdns.de", "bbb.powerdns.net.", "xxx.powerdns.com."},
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[]string{"xxx.powerdns.com.", "aaa.powerdns.de", "bbb.powerdns.net."},
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},
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{
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[]string{"aaa.POWERDNS.de", "bbb.PoweRdnS.net.", "xxx.powerdns.com."},
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[]string{"xxx.powerdns.com.", "aaa.POWERDNS.de", "bbb.PoweRdnS.net."},
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},
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{
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[]string{"aaa.aaaa.aa.", "aa.aaa.a.", "bbb.bbbb.bb."},
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[]string{"aa.aaa.a.", "aaa.aaaa.aa.", "bbb.bbbb.bb."},
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},
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{
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[]string{"aaaaa.", "aaa.", "bbb."},
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[]string{"aaa.", "aaaaa.", "bbb."},
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},
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{
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[]string{"a.a.a.a.", "a.a.", "a.a.a."},
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[]string{"a.a.", "a.a.a.", "a.a.a.a."},
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},
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{
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[]string{"example.", "z.example.", "a.example."},
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[]string{"example.", "a.example.", "z.example."},
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},
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{
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[]string{"a.example.", "Z.a.example.", "z.example.", "yljkjljk.a.example.", "\\001.z.example.", "example.", "*.z.example.", "\\200.z.example.", "zABC.a.EXAMPLE."},
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[]string{"example.", "a.example.", "yljkjljk.a.example.", "Z.a.example.", "zABC.a.EXAMPLE.", "z.example.", "\\001.z.example.", "*.z.example.", "\\200.z.example."},
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},
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{
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// RFC3034 example.
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[]string{"a.example.", "Z.a.example.", "z.example.", "yljkjljk.a.example.", "example.", "*.z.example.", "zABC.a.EXAMPLE."},
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[]string{"example.", "a.example.", "yljkjljk.a.example.", "Z.a.example.", "zABC.a.EXAMPLE.", "z.example.", "*.z.example."},
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},
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}
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Tests:
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for j, test := range tests {
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sort.Sort(set(test.in))
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for i := 0; i < len(test.in); i++ {
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if test.in[i] != test.out[i] {
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t.Errorf("test %d: expected %s, got %s\n", j, test.out[i], test.in[i])
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n := ""
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for k, in := range test.in {
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if k+1 == len(test.in) {
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n = "\n"
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}
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t.Logf("%s <-> %s\n%s", in, test.out[k], n)
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}
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continue Tests
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}
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}
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}
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}
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