start_server {tags {"flash"} overrides {"storage-provider flash /mnt/tmp/"}} {
    test "Without maxmemory small integers are shared" {
        r config set maxmemory 0
        r set a 1
        assert {[r object refcount a] > 1}
    }

    foreach policy {
        allkeys-random allkeys-lru allkeys-lfu
    } {
        test "maxmemory - is the memory limit honoured? (policy $policy)" {
            # make sure to start with a blank instance
            r flushall
            # Get the current memory limit and calculate a new limit.
            # We just add 100k to the current memory size so that it is
            # fast for us to reach that limit.
            set used [s used_memory]
            set limit [expr {$used+100000*1024}]
            r config set maxmemory $limit
            r config set maxmemory-policy $policy
            # Now add keys until the limit is almost reached.
            set numkeys 0
            while 1 {
                r setex [randomKey] 10000 x
                incr numkeys
                if {[s used_memory]+4096 > $limit} {
                    assert {$numkeys > 10}
                    break
                }
            }
            # If we add the same number of keys already added again, we
            # should still be under the limit.
            for {set j 0} {$j < $numkeys} {incr j} {
                r setex [randomKey] 10000 x
            }
            assert {[s used_memory] < ($limit+4096)}
        }
    }
}