fixed #6595
fixed #6595

spinner unit test improved.
+mousedown and mouseleave checked.
+maxLength max and min options checked.
+up and down arrow using checked.

sourabh8003/ultimate-primeNg,aaraggornn/primeng,sourabh8003/ultimate-primeNg,aaraggornn/primeng,primefaces/primeng,carlosearaujo/primeng,sourabh8003/ultimate-primeNg,primefaces/primeng,primefaces/primeng,WebRota/primeng,sourabh8003/ultimate-primeNg,WebRota/primeng,aaraggornn/primeng,WebRota/primeng,aaraggornn/primeng,carlosearaujo/primeng,primefaces/primeng,carlosearaujo/primeng,WebRota/primeng,carlosearaujo/primeng