`read' not accepting input from stdin

[Scott Mcdermott]

I'm confused about this behavior:

        $ unset REPLY
        $ echo testing | read
        $ echo $REPLY

echos a newline only (from echo).  But this:

        $ echo testing > tmpfile
        $ read < tmpfile
        $ echo $REPLY
        testing

has expected behavior of setting REPLY from stdin.

Seems to me, should be the same behavior in both cases.

Is this expected behavior?