handshake: migrate tests away from Ginkgo (#4667)

internal/handshake/handshake_helpers_test.go

@@ -0,0 +1,35 @@
+package handshake
+
+import (
+	"crypto/tls"
+	"encoding/hex"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func splitHexString(t *testing.T, s string) (slice []byte) {
+	t.Helper()
+	for _, ss := range strings.Split(s, " ") {
+		if ss[0:2] == "0x" {
+			ss = ss[2:]
+		}
+		d, err := hex.DecodeString(ss)
+		require.NoError(t, err)
+		slice = append(slice, d...)
+	}
+	return
+}
+
+func TestSplitHexString(t *testing.T) {
+	require.Equal(t, []byte{0xde, 0xad, 0xbe, 0xef}, splitHexString(t, "0xdeadbeef"))
+	require.Equal(t, []byte{0xde, 0xad, 0xbe, 0xef}, splitHexString(t, "deadbeef"))
+	require.Equal(t, []byte{0xde, 0xad, 0xbe, 0xef}, splitHexString(t, "dead beef"))
+}
+
+var cipherSuites = []*cipherSuite{
+	getCipherSuite(tls.TLS_AES_128_GCM_SHA256),
+	getCipherSuite(tls.TLS_AES_256_GCM_SHA384),
+	getCipherSuite(tls.TLS_CHACHA20_POLY1305_SHA256),
+}