util.startup: Check root after detecting platform and reading config (thanks SigmaTel71)
Ensures that startup.detect_platform() runs so know whether to use the
POSIX method of checking the current user or something else. Also after
reading the config so we know whether the root override setting is set.
local rb = require "util.ringbuffer";
describe("util.ringbuffer", function ()
describe("#new", function ()
it("has a constructor", function ()
assert.Function(rb.new);
end);
it("can be created", function ()
assert.truthy(rb.new());
end);
it("won't create an empty buffer", function ()
assert.has_error(function ()
rb.new(0);
end);
end);
it("won't create a negatively sized buffer", function ()
assert.has_error(function ()
rb.new(-1);
end);
end);
end);
describe(":write", function ()
local b = rb.new();
it("works", function ()
assert.truthy(b:write("hi"));
end);
end);
describe(":discard", function ()
local b = rb.new();
it("works", function ()
assert.truthy(b:write("hello world"));
assert.truthy(b:discard(6));
assert.equal(5, #b);
assert.equal("world", b:read(5));
end);
end);
describe(":sub", function ()
-- Helper function to compare buffer:sub() with string:sub()
local function test_sub(b, x, y)
local s = b:read(#b, true);
local string_result, buffer_result = s:sub(x, y), b:sub(x, y);
assert.equals(string_result, buffer_result, ("buffer:sub(%d, %s) does not match string:sub()"):format(x, y and ("%d"):format(y) or "nil"));
end
it("works", function ()
local b = rb.new();
assert.truthy(b:write("hello world"));
assert.equals("hello", b:sub(1, 5));
end);
it("supports optional end parameter", function ()
local b = rb.new();
assert.truthy(b:write("hello world"));
assert.equals("hello world", b:sub(1));
assert.equals("world", b:sub(-5));
end);
it("is equivalent to string:sub", function ()
local b = rb.new(6);
assert.truthy(b:write("foobar"));
b:read(3);
b:write("foo");
for i = -13, 13 do
for j = -13, 13 do
test_sub(b, i, j);
end
end
end);
end);
describe(":byte", function ()
-- Helper function to compare buffer:byte() with string:byte()
local function test_byte(b, x, y)
local s = b:read(#b, true);
local string_result, buffer_result = {s:byte(x, y)}, {b:byte(x, y)};
assert.same(string_result, buffer_result, ("buffer:byte(%d, %s) does not match string:byte()"):format(x, y and ("%d"):format(y) or "nil"));
end
it("is equivalent to string:byte", function ()
local b = rb.new(6);
assert.truthy(b:write("foobar"));
b:read(3);
b:write("foo");
test_byte(b, 1);
test_byte(b, 3);
test_byte(b, -1);
test_byte(b, -3);
for i = -13, 13 do
for j = -13, 13 do
test_byte(b, i, j);
end
end
end);
it("works with characters > 127", function ()
local b = rb.new();
b:write(string.char(0, 140));
local r = { b:byte(1, 2) };
assert.same({ 0, 140 }, r);
end);
end);
end);