def failures = other == null ? [failure] : [failure, other]
        1 * workExecutor.execute(gradleMock, finalizedPlan) >> ExecutionResult.maybeFailed(failures)
    }

    private void expectBuildFinished(String action = "Build") {
        1 * buildListener.buildFinished({ it.failure == null && it.action == action })

        List<Throwable> failures = new ArrayList<>();
        awaitCompletion(workSource, currentWorkerLease, failures);
        return ExecutionResult.maybeFailed(failures);
    }

    @Override
    public void assertHealthy() {
        // Wait until execution state is healthy.