tree a726207538c05d98e92eb4e2ceb8d66c075f19d4
parent 6c434a3a15d85258c25eec9eeb2c4fefaf8e9135
author Thomas Wolf <thomas.wolf@paranor.ch> 1492812411 +0200
committer Thomas Wolf <thomas.wolf@paranor.ch> 1492812486 +0200

Fix CommandEnablementTest

SWTbot was changed today to do selections in trees differently, and
also to do event notification differently.[1] This makes these tests
fail consistently because evidently the command enablement has not
been recomputed yet when we test it, and command.isHandled() is still
false. It's a timing issue; running in the debugger the tests can be
made to succeed.

With [1], SWTbot sends event notifications inside an asyncExec.
Previously, it sent them outside. I don't know if our test was broken
all along and succeeded just by chance, or whether [1] introduced a
bug in SWTbot. In any case selecting the the tree node inside a
Display.syncExec() ensures that the selection is done and event
notifications have occurred before the test proceeds.

[1] https://git.eclipse.org/r/#/c/87761/

Change-Id: Ib46803eb58ea23208cc87b34421711455bc94290
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>