Fix test GREASE comparison

internal/client/chrome_test.go

@@ -34,15 +34,15 @@ func TestComposeExtension(t *testing.T) {
 
 	result := (&Chrome{}).composeExtensions(sni, keyShare)
 	target, _ := hex.DecodeString("8a8a00000000000f000d00000a6769746875622e636f6d00170000ff01000100000a000a00088a8a001d00170018000b00020100002300000010000e000c02683208687474702f312e31000500050100000000000d0012001004030804040105030805050108060601001200000033002b00298a8a000100001d0020690f074f5c01756982269b66d58c90c47dc0f281d654c7b2c16f63c9033f5604002d00020101002b000b0a3a3a0304030303020301001b00030200024a4a000100001500d2000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
-	for p := 0; p < len(result); {
-		// skip GREASEs
-		if result[p]&0x0F == 0xA && result[p] == result[p+1] {
-			p += 2
-			continue
-		}
+	for p := 0; p < len(result); p++ {
 		if result[p] != target[p] {
+			if result[p]&0x0F == 0xA && target[p]&0x0F == 0xA &&
+				((p > 0 && result[p-1] == result[p] && target[p-1] == target[p]) ||
+					(p < len(result)-1 && result[p+1] == result[p] && target[p+1] == target[p])) {
+				continue
+			}
 			t.Errorf("inequality at %v", p)
 		}
-		p += 1
 	}
+
 }