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function new(new)
local c = new(5);
assert_equal(c:count(), 0);
c:set("one", 1)
assert_equal(c:count(), 1);
c:set("two", 2)
c:set("three", 3)
c:set("four", 4)
c:set("five", 5);
assert_equal(c:count(), 5);
c:set("foo", nil);
assert_equal(c:count(), 5);
assert_equal(c:get("one"), 1);
assert_equal(c:get("two"), 2);
assert_equal(c:get("three"), 3);
assert_equal(c:get("four"), 4);
assert_equal(c:get("five"), 5);
assert_equal(c:get("foo"), nil);
assert_equal(c:get("bar"), nil);
c:set("six", 6);
assert_equal(c:count(), 5);
assert_equal(c:get("one"), nil);
assert_equal(c:get("two"), 2);
assert_equal(c:get("three"), 3);
assert_equal(c:get("four"), 4);
assert_equal(c:get("five"), 5);
assert_equal(c:get("six"), 6);
c:set("three", nil);
assert_equal(c:count(), 4);
assert_equal(c:get("one"), nil);
assert_equal(c:get("two"), 2);
assert_equal(c:get("three"), nil);
assert_equal(c:get("four"), 4);
assert_equal(c:get("five"), 5);
assert_equal(c:get("six"), 6);
c:set("seven", 7);
assert_equal(c:count(), 5);
assert_equal(c:get("one"), nil);
assert_equal(c:get("two"), 2);
assert_equal(c:get("three"), nil);
assert_equal(c:get("four"), 4);
assert_equal(c:get("five"), 5);
assert_equal(c:get("six"), 6);
assert_equal(c:get("seven"), 7);
c:set("eight", 8);
assert_equal(c:count(), 5);
assert_equal(c:get("one"), nil);
assert_equal(c:get("two"), nil);
assert_equal(c:get("three"), nil);
assert_equal(c:get("four"), 4);
assert_equal(c:get("five"), 5);
assert_equal(c:get("six"), 6);
assert_equal(c:get("seven"), 7);
assert_equal(c:get("eight"), 8);
c:set("four", 4);
assert_equal(c:count(), 5);
assert_equal(c:get("one"), nil);
assert_equal(c:get("two"), nil);
assert_equal(c:get("three"), nil);
assert_equal(c:get("four"), 4);
assert_equal(c:get("five"), 5);
assert_equal(c:get("six"), 6);
assert_equal(c:get("seven"), 7);
assert_equal(c:get("eight"), 8);
c:set("nine", 9);
assert_equal(c:count(), 5);
assert_equal(c:get("one"), nil);
assert_equal(c:get("two"), nil);
assert_equal(c:get("three"), nil);
assert_equal(c:get("four"), 4);
assert_equal(c:get("five"), nil);
assert_equal(c:get("six"), 6);
assert_equal(c:get("seven"), 7);
assert_equal(c:get("eight"), 8);
assert_equal(c:get("nine"), 9);
local keys = { "nine", "four", "eight", "seven", "six" };
local values = { 9, 4, 8, 7, 6 };
local i = 0;
for k, v in c:items() do
i = i + 1;
assert_equal(k, keys[i]);
assert_equal(v, values[i]);
end
assert_equal(i, 5);
c:set("four", "2+2");
assert_equal(c:count(), 5);
assert_equal(c:get("one"), nil);
assert_equal(c:get("two"), nil);
assert_equal(c:get("three"), nil);
assert_equal(c:get("four"), "2+2");
assert_equal(c:get("five"), nil);
assert_equal(c:get("six"), 6);
assert_equal(c:get("seven"), 7);
assert_equal(c:get("eight"), 8);
assert_equal(c:get("nine"), 9);
local keys = { "four", "nine", "eight", "seven", "six" };
local values = { "2+2", 9, 8, 7, 6 };
local i = 0;
for k, v in c:items() do
i = i + 1;
assert_equal(k, keys[i]);
assert_equal(v, values[i]);
end
assert_equal(i, 5);
c:set("foo", nil);
assert_equal(c:count(), 5);
assert_equal(c:get("one"), nil);
assert_equal(c:get("two"), nil);
assert_equal(c:get("three"), nil);
assert_equal(c:get("four"), "2+2");
assert_equal(c:get("five"), nil);
assert_equal(c:get("six"), 6);
assert_equal(c:get("seven"), 7);
assert_equal(c:get("eight"), 8);
assert_equal(c:get("nine"), 9);
local keys = { "four", "nine", "eight", "seven", "six" };
local values = { "2+2", 9, 8, 7, 6 };
local i = 0;
for k, v in c:items() do
i = i + 1;
assert_equal(k, keys[i]);
assert_equal(v, values[i]);
end
assert_equal(i, 5);
c:set("four", nil);
assert_equal(c:get("one"), nil);
assert_equal(c:get("two"), nil);
assert_equal(c:get("three"), nil);
assert_equal(c:get("four"), nil);
assert_equal(c:get("five"), nil);
assert_equal(c:get("six"), 6);
assert_equal(c:get("seven"), 7);
assert_equal(c:get("eight"), 8);
assert_equal(c:get("nine"), 9);
local keys = { "nine", "eight", "seven", "six" };
local values = { 9, 8, 7, 6 };
local i = 0;
for k, v in c:items() do
i = i + 1;
assert_equal(k, keys[i]);
assert_equal(v, values[i]);
end
assert_equal(i, 4);
local evicted_key, evicted_value;
local c = new(3, function (_key, _value)
evicted_key, evicted_value = _key, _value;
end);
local function set(k, v, should_evict_key, should_evict_value)
evicted_key, evicted_value = nil, nil;
c:set(k, v);
assert_equal(evicted_key, should_evict_key);
assert_equal(evicted_value, should_evict_value);
end
set("a", 1)
set("a", 1)
set("a", 1)
set("a", 1)
set("a", 1)
set("b", 2)
set("c", 3)
set("b", 2)
set("d", 4, "a", 1)
set("e", 5, "c", 3)
local evicted_key, evicted_value;
local c3 = new(1, function (_key, _value, c3)
evicted_key, evicted_value = _key, _value;
if _key == "a" then
-- Put it back in...
-- Check that the newest key/value was set before on_evict was called
assert_equal(c3:get("b"), 2);
-- Sanity check for what we're evicting
assert_equal(_key, "a");
assert_equal(_value, 1);
-- Re-insert the evicted key (causes this evict function to run again with "b",2)
c3:set(_key, _value)
assert_equal(c3:get(_key), _value)
end
end);
local function set(k, v, should_evict_key, should_evict_value)
evicted_key, evicted_value = nil, nil;
c3:set(k, v);
assert_equal(evicted_key, should_evict_key);
assert_equal(evicted_value, should_evict_value);
end
set("a", 1)
set("a", 1)
set("a", 1)
set("a", 1)
set("a", 1)
-- The evict handler re-inserts "a"->1, so "b" gets evicted:
set("b", 2, "b", 2)
-- Check the final state is what we expect
assert_equal(c3:get("a"), 1);
assert_equal(c3:get("b"), nil);
assert_equal(c3:count(), 1);
end
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