<Swing Dev> RFR: 8253543: sanity/client/SwingSet/src/ButtonDemoScreenshotTest.java failed with "AssertionError: All pixels are not black" [v2]

[Alexandre Iline]

> Added a few synchronization points to the test:
> 	1	wait for the screen to change where the test window is displayed
> 	2	wait for the image to get still (i.e. painted complete)
> 	3	wait for the image to change after the mouse move
> 	4	wait for the image change and then to get still after the mouse press
> 	5	wait for the image to change after the mouse release
> 
> @mrserb Can you take a look?

Alexandre Iline has updated the pull request incrementally with one additional commit since the last revision:

  Reverting a erroniously changed file

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/389/files
  - new: https://git.openjdk.java.net/jdk/pull/389/files/0f083b6a..b45c19ca

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=389&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=389&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 2 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/389.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/389/head:pull/389

PR: https://git.openjdk.java.net/jdk/pull/389