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soypat
74 lines
2.5 KiB
Go
74 lines
2.5 KiB
Go
package tls_test
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import (
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"strings"
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"testing"
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"github.com/soypat/lneto/x/tls"
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)
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// StringConst must name defined values as String does, GREASE values "GREASE"
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// and everything else "unknown", over the whole range and without allocating.
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// A constant added without extending a StringConst switch fails here.
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func TestStringConst(t *testing.T) {
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for _, tc := range []struct {
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name string
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n int
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grease bool // type carries GREASE values
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str func(int) string
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cst func(int) string
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}{
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{"ContentType", 1 << 8, false,
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func(i int) string { return tls.ContentType(i).String() },
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func(i int) string { return tls.ContentType(i).StringConst() }},
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{"HandshakeType", 1 << 8, false,
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func(i int) string { return tls.HandshakeType(i).String() },
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func(i int) string { return tls.HandshakeType(i).StringConst() }},
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{"AlertLevel", 1 << 8, false,
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func(i int) string { return tls.AlertLevel(i).String() },
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func(i int) string { return tls.AlertLevel(i).StringConst() }},
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{"AlertDescription", 1 << 8, false,
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func(i int) string { return tls.AlertDescription(i).String() },
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func(i int) string { return tls.AlertDescription(i).StringConst() }},
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{"ExtensionType", 1 << 16, true,
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func(i int) string { return tls.ExtensionType(i).String() },
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func(i int) string { return tls.ExtensionType(i).StringConst() }},
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{"NamedGroup", 1 << 16, true,
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func(i int) string { return tls.NamedGroup(i).String() },
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func(i int) string { return tls.NamedGroup(i).StringConst() }},
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{"SignatureScheme", 1 << 16, true,
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func(i int) string { return tls.SignatureScheme(i).String() },
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func(i int) string { return tls.SignatureScheme(i).StringConst() }},
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{"CipherSuite", 1 << 16, true,
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func(i int) string { return tls.CipherSuite(i).String() },
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func(i int) string { return tls.CipherSuite(i).StringConst() }},
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} {
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t.Run(tc.name, func(t *testing.T) {
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for i := range tc.n {
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str, cst := tc.str(i), tc.cst(i)
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if !strings.ContainsRune(str, '(') { // stringer names undefined values "Type(9)".
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if cst != str {
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t.Fatalf("%s(%d)=%q want %q", tc.name, i, cst, str)
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}
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continue
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}
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want := "unknown"
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if tc.grease && tls.IsGREASE(uint16(i)) {
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want = "GREASE"
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}
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if cst != want {
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t.Fatalf("%s(%d)=%q want %q", tc.name, i, cst, want)
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}
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}
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allocs := testing.AllocsPerRun(1, func() {
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for i := range tc.n {
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_ = tc.cst(i)
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}
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})
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if allocs != 0 {
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t.Errorf("%s allocated %v times", tc.name, allocs)
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}
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})
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}
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}
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