Partially failing crlf encoding roundtrip tests.

Author: jnthn

S15-nfg/crlf-encoding.t

@@ -0,0 +1,15 @@
+use v6;
+use Test;
+
+plan 20;
+
+for <utf-8 ascii latin-1 windows-1252> -> $encoding {
+    my $buf = "\r\n".encode($encoding);
+    is $buf.elems, 2, "CRLF encodes to 2 bytes ($encoding)";
+    is $buf[0], 0x0D, "first byte is correct ($encoding)";
+    is $buf[1], 0x0A, "second byte is correct ($encoding)";
+
+    my $str = $buf.decode($encoding);
+    is $str.chars, 1, "decoding it gives back one grapheme ($encoding)";
+    is $str, "\r\n", "decoding it gives back the correct grapheme ($encoding)";
+}