prosody
affaf6d08d26
spec/util_datamanager_spec.lua

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spec/util_datamanager_spec.lua @ 13186:affaf6d08d26

util.datamanager: Pad list writes to avoid crossing block boundaries By padding items so that they do not cross block boundaries, it becomes eaiser to delete whole blocks with fallocate() without cutting items in half, improving efficiency of such operations. Since list stores are used for message archives, where the most common deletion operation would be of the oldest entires, at the top of the file. With this, all blocks that contain items to be removed could be deleted without needing to read, delete and write out the whole file.
author Kim Alvefur <zash@zash.se>
date Wed, 07 Jun 2023 00:39:30 +0200
parent 11370:7c2ef5a1ec9c
line wrap: on
line source

describe("util.datamanager", function()
	local dm;
	setup(function()
		dm = require "util.datamanager";
		dm.set_data_path("./data");
	end);

	describe("keyvalue", function()
		local data = {hello = "world"};

		do
			local ok, err = dm.store("keyval-user", "datamanager.test", "testdata", data);
			assert.truthy(ok, err);
		end

		do
			local read, err = dm.load("keyval-user", "datamanager.test", "testdata")
			assert.same(data, read, err);
		end

		do
			local ok, err = dm.store("keyval-user", "datamanager.test", "testdata", nil);
			assert.truthy(ok, err);
		end

		do
			local read, err = dm.load("keyval-user", "datamanager.test", "testdata")
			assert.is_nil(read, err);
		end
	end)

	describe("lists", function()
		do
			local ok, err = dm.list_store("list-user", "datamanager.test", "testdata", {});
			assert.truthy(ok, err);
		end

		do
			local nothing, err = dm.list_load("list-user", "datamanager.test", "testdata");
			assert.is_nil(nothing, err);
			assert.is_nil(err);
		end

		do
			local ok, err = dm.list_append("list-user", "datamanager.test", "testdata", {id = 1});
			assert.truthy(ok, err);
		end

		do
			local ok, err = dm.list_append("list-user", "datamanager.test", "testdata", {id = 2});
			assert.truthy(ok, err);
		end

		do
			local ok, err = dm.list_append("list-user", "datamanager.test", "testdata", {id = 3});
			assert.truthy(ok, err);
		end

		do
			local list, err = dm.list_load("list-user", "datamanager.test", "testdata");
			assert.same(list, {{id = 1}; {id = 2}; {id = 3}}, err);
		end

		do
			local ok, err = dm.list_store("list-user", "datamanager.test", "testdata", {});
			assert.truthy(ok, err);
		end

		do
			local nothing, err = dm.list_load("list-user", "datamanager.test", "testdata");
			assert.is_nil(nothing, err);
			assert.is_nil(err);
		end

	end)
end)