capturedEnvironment = new HashMap<>(pb.environment());

            return new TestJobProcess(exitValue, processOutput);
        }
    }

    private static class TestJobProcess extends JobProcess {
        private final int exitValue;
        private final String output;

        public TestJobProcess(int exitValue, String output) {
            super(new TestProcess(exitValue));

            capturedEnvironment = new HashMap<>(pb.environment());

            return new TestJobProcess(exitValue, processOutput);
        }

        @Override
        public int destroyProcess(String sessionId) {
            destroyProcessCalled = true;
            return 0;
        }
    }

    private static class TestJobProcess extends JobProcess {
        private final int exitValue;