add some testing for the setting of the options #1126

Author: jantje

io.sloeber.autoBuild.test/META-INF/MANIFEST.MF

@@ -1,7 +1,7 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: Test
-Bundle-SymbolicName: io.sloeber.autoBuild.test
+Bundle-SymbolicName: io.sloeber.autoBuild.test;singleton:=true
 Bundle-Version: 4.4.2.qualifier
 Require-Bundle: org.eclipse.cdt.core;bundle-version="7.4.200",
  org.eclipse.equinox.registry,
@@ -14,6 +14,7 @@ Require-Bundle: org.eclipse.cdt.core;bundle-version="7.4.200",
  org.junit,
  junit-jupiter-params,
  org.eclipse.cdt.core.native,
- io.sloeber.autoBuild
+ io.sloeber.autoBuild,
+ org.eclipse.ui.workbench
 Automatic-Module-Name: io.sloeber.autoBuild.test
 Bundle-RequiredExecutionEnvironment: JavaSE-17