1 * info.getTotalPhysicalMemory() >> MemoryAmount.ofGigaBytes(32).bytes
        1 * info.getAvailablePhysicalMemory() >> MemoryAmount.ofGigaBytes(16).bytes
        2 * info.getCommitLimit() >> MemoryAmount.ofGigaBytes(64).bytes
        1 * info.getCommitTotal() >> MemoryAmount.ofGigaBytes(48).bytes

        and:
        snapshot.getPhysicalMemory().getTotal() == MemoryAmount.ofGigaBytes(32).bytes

    def expiration = new WorkerDaemonExpiration(clientsManager, MemoryAmount.ofGigaBytes(OS_MEMORY_GB).bytes)

    def "expires least recently used idle worker daemon to free system memory when requested to release some memory"() {
        given:
        def client1 = reserveNewClient(twoGbOptions)

        memoryManager.addMemoryHolder(holder2)

        when:
        memoryManager.requestFreeMemory(MemoryAmount.ofGigaBytes(5).bytes)

        then:
        1 * holder1.attemptToRelease(_) >> MemoryAmount.ofGigaBytes(2).bytes
        1 * holder2.attemptToRelease(_) >> MemoryAmount.ofGigaBytes(2).bytes

        cleanup:
        memoryManager.stop()
    }

    }

    def "of kilo mega giga tera bytes"() {
        expect:
        MemoryAmount.ofKiloBytes(23) == MemoryAmount.of('23k')
        MemoryAmount.ofMegaBytes(23) == MemoryAmount.of('23m')
        MemoryAmount.ofGigaBytes(23) == MemoryAmount.of('23g')
        MemoryAmount.ofTeraBytes(23) == MemoryAmount.of('23t')

    }

    }

    public static MemoryAmount ofMegaBytes(long megaBytes) {
        long bytes = megaBytes * MEGA_FACTOR;
        return new MemoryAmount(bytes, bytes + "m");
    }

    public static MemoryAmount ofGigaBytes(long gigaBytes) {
        long bytes = gigaBytes * GIGA_FACTOR;
        return new MemoryAmount(bytes, bytes + "g");
    }

    public static MemoryAmount ofTeraBytes(long teraBytes) {