Test a default (= UTF-8) encode and decode

tests/basics/unicode.py

@@ -2,6 +2,7 @@
 s = "asdf©qwer"
 for i in range(len(s)):
     print("s[%d]: %s   %X"%(i, s[i], ord(s[i])))
+
 # Test all three forms of Unicode escape, and
 # all blocks of UTF-8 byte patterns
 s = "a\xA9\xFF\u0123\u0800\uFFEE\U0001F44C"
@@ -11,3 +12,7 @@ for i in range(-len(s), len(s)):
     for j in range(i, len(s)):
         print("s[%d:%d]: %d chars, '%s'"%(i, j, len(s[i:j]), s[i:j]))
     print("s[%d:]: %d chars, '%s'"%(i, len(s[i:]), s[i:]))
+
+# Test UTF-8 encode and decode
+enc = s.encode()
+print(enc, enc.decode() == s)