// Set to off.
SEND:\pset tuples_only off
EXPECT:Tuples only is off.

// Set to on.
SEND:\pset tuples_only on
EXPECT:Tuples only is on.

// Toggle to off.
SEND:\pset tuples_only
EXPECT:Tuples only is off.

// Toggle to on.
SEND:\pset tuples_only
EXPECT:Tuples only is on.

// Set to something invalid.
SEND:\pset tuples_only invalid
EXPECT:executing meta command: unrecognized value "invalid" for "tuples_only": Boolean expected

// Ensure tuples_only shows only tuples.
SEND:SELECT 1 as foo, 'baz' as bar;
EXPECT:+---+-----+
EXPECT:| 1 | baz |
EXPECT:+---+-----+
EXPECT:

// Set back to off as we started.
SEND:\pset tuples_only off
EXPECT:Tuples only is off.

// make sure the \t meta-command returns expected errors
SEND:\t off extra
EXPECT:executing meta command: meta command 'tuples_only' takes zero or one argument