If we try to use JSliderOperator.scrollToMinimum() for a slider which has a negative minimum value, then the slider scrolls till 0 and then gets stuck, leading to timeout error.

This happens only on Mac, it is not reproducible on windows, Linux and Solaris.

This issue was encountered when automating Slider Demo .
When we were using checkMinimum(jso, -10);

on line 81 for SliderDemoTest, the following calls were made:

> SliderDemoTest.checkMinimum(JSliderOperator jso, int minValue)
> JSliderOperator.scrollToMinimum()
> JSliderOperator. scrollToValue(getMinimum())
> JSliderOperator.scrollTo(final ScrollAdjuster adj)
> AbstractScrollDriver.scroll(ComponentOperator oper, ScrollAdjuster adj)

At this point for windows, canPushAndWait(oper) was being executed , while for mac doJumps(oper, adj) was being executed
this called:

> JSliderAPIDriver.jump(final ComponentOperator oper, final ScrollAdjuster adj)

in this function, newValue = -1; was being done, and after assigning a new value to newValue conditionally, it was calling JSliderAPIDriver. setValue(ComponentOperator oper, int value)

which was setting the new value using JSliderOperator.setValue only if the newValue is not -1, which had been set as initial value, this was being done as a check that the value of newValue has not changed, but when the slider needs to goto a negative value, then this gets stuck at 0, because -1 value cannot be assigned.