util.signal: Add support for signalfd(2) on Linux
signalfd allows handling signal events using the same method as sockets,
via file descriptors. Thus all signal dispatch can go through the same
main event loop as everything else, removing need for thread-scary
signal handling where execution would just jump to the signal handler
regardless of the state of Lua, and needing to keep track of Lua
states/threads.
local u_table = require "util.table";
describe("util.table", function ()
describe("create()", function ()
it("works", function ()
-- Can't test the allocated sizes of the table, so what you gonna do?
assert.is.table(u_table.create(1,1));
end);
end);
describe("pack()", function ()
it("works", function ()
assert.same({ "lorem", "ipsum", "dolor", "sit", "amet", n = 5 }, u_table.pack("lorem", "ipsum", "dolor", "sit", "amet"));
end);
end);
describe("move()", function ()
it("works", function ()
local t1 = { "apple", "banana", "carrot" };
local t2 = { "cat", "donkey", "elephant" };
local t3 = {};
u_table.move(t1, 1, 3, 1, t3);
u_table.move(t2, 1, 3, 3, t3);
assert.same({ "apple", "banana", "cat", "donkey", "elephant" }, t3);
end);
it("supports overlapping regions", function ()
do
local t1 = { "apple", "banana", "carrot", "date", "endive", "fig", "grapefruit" };
u_table.move(t1, 1, 3, 3);
assert.same({ "apple", "banana", "apple", "banana", "carrot", "fig", "grapefruit" }, t1);
end
do
local t1 = { "apple", "banana", "carrot", "date", "endive", "fig", "grapefruit" };
u_table.move(t1, 1, 3, 2);
assert.same({ "apple", "apple", "banana", "carrot", "endive", "fig", "grapefruit" }, t1);
end
do
local t1 = { "apple", "banana", "carrot", "date", "endive", "fig", "grapefruit" };
u_table.move(t1, 3, 5, 2);
assert.same({ "apple", "carrot", "date", "endive", "endive", "fig", "grapefruit" }, t1);
end
do
local t1 = { "apple", "banana", "carrot", "date", "endive", "fig", "grapefruit" };
u_table.move(t1, 3, 5, 6);
assert.same({ "apple", "banana", "carrot", "date", "endive", "carrot", "date", "endive" }, t1);
end
do
local t1 = { "apple", "banana", "carrot", "date", "endive", "fig", "grapefruit" };
u_table.move(t1, 3, 1, 3);
assert.same({ "apple", "banana", "carrot", "date", "endive", "fig", "grapefruit" }, t1);
end
end);
end);
end);