Test

    @Test
    public void testPropertyTest() throws Exception {
        FreeStyleProject project = j.createFreeStyleProject("tester");
        project.getBuildersList().add(new TestBuilder() {
           @Override
           public boolean perform(AbstractBuild<?,?> build, Launcher launcher, BuildListener listener) throws InterruptedException, IOException {
               listener.getLogger().println("[2020-12-07T12:06:20.387Z] SonarQube task 'AXY9F-obrAIK9ZVmoTfZ' completed. Quality gate is 'ERROR'");
               return true;
           }
        });

        FreeStyleBuild b = project.scheduleBuild2(0).get();
        assertEquals(" 'ERROR'",TokenMacro.expand(b, StreamTaskListener.fromStdout(),
                "${LOG_REGEX,regex=\"^.*?completed\\. Quality gate is(.*?$)\",replacement=\"\\\\1\"}"));
    }