Tests that mouse manipulation through input domain works concurrently from multiple sessions.
Mouse down in session1
Mouse move in session2
Mouse up in session2
Mouse move in session1
-----Event-----
type: mousedown
button: 1
buttons: 4
x: 100
y: 200
-----Event-----
type: mousemove
button: 0
buttons: 4
x: 50
y: 150
-----Event-----
type: mouseup
button: 1
buttons: 0
x: 50
y: 150
-----Event-----
type: mousemove
button: 0
buttons: 0
x: 150
y: 50