mirror of
https://github.com/neovim/neovim.git
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247 lines
7.5 KiB
Lua
247 lines
7.5 KiB
Lua
local helpers = require 'test.unit.helpers'
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local prof = helpers.cimport './src/nvim/profile.h'
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local ffi = helpers.ffi
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local eq = helpers.eq
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local neq = helpers.neq
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local function split(inputstr, sep)
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if sep == nil then
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sep = "%s"
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end
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local t, i = {}, 1
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for str in string.gmatch(inputstr, "([^"..sep.."]+)") do
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t[i] = str
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i = i + 1
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end
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return t
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end
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local function trim(s)
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local from = s:match"^%s*()"
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return from > #s and "" or s:match(".*%S", from)
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end
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local function starts(str, start)
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return string.sub(str, 1, string.len(start)) == start
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end
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local function cmp_assert(v1, v2, op, opstr)
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local res = op(v1, v2)
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if res == false then
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print(string.format("expected: %f %s %f", v1, opstr, v2))
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end
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assert.is_true(res)
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end
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local function lt(a, b) -- luacheck: ignore
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cmp_assert(a, b, function(x, y) return x < y end, "<")
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end
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local function lte(a, b) -- luacheck: ignore
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cmp_assert(a, b, function(x, y) return x <= y end, "<=")
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end
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local function gt(a, b) -- luacheck: ignore
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cmp_assert(a, b, function(x, y) return x > y end, ">")
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end
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local function gte(a, b)
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cmp_assert(a, b, function(x, y) return x >= y end, ">=")
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end
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-- missing functions:
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-- profile_self
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-- profile_get_wait
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-- profile_set_wait
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-- profile_sub_wait
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describe('profiling related functions', function()
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local function profile_start() return prof.profile_start() end
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local function profile_end(t) return prof.profile_end(t) end
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local function profile_zero() return prof.profile_zero() end
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local function profile_setlimit(ms) return prof.profile_setlimit(ms) end
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local function profile_passed_limit(t) return prof.profile_passed_limit(t) end
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local function profile_add(t1, t2) return prof.profile_add(t1, t2) end
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local function profile_sub(t1, t2) return prof.profile_sub(t1, t2) end
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local function profile_divide(t, cnt) return prof.profile_divide(t, cnt) end
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local function profile_cmp(t1, t2) return prof.profile_cmp(t1, t2) end
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local function profile_equal(t1, t2) return prof.profile_equal(t1, t2) end
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local function profile_msg(t) return ffi.string(prof.profile_msg(t)) end
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local function toseconds(t) -- luacheck: ignore
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local str = trim(profile_msg(t))
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local spl = split(str, ".")
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local s, us = spl[1], spl[2]
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return tonumber(s) + tonumber(us) / 1000000
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end
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describe('profile_equal', function()
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it('times are equal to themselves', function()
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local start = profile_start()
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assert.is_true(profile_equal(start, start))
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local e = profile_end(start)
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assert.is_true(profile_equal(e, e))
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end)
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it('times are unequal to others', function()
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assert.is_false(profile_equal(profile_start(), profile_start()))
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end)
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end)
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-- this is quite difficult to test, as it would rely on other functions in
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-- the profiling package. Those functions in turn will probably be tested
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-- using profile_cmp... circular reasoning.
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describe('profile_cmp', function()
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it('can compare subsequent starts', function()
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local s1, s2 = profile_start(), profile_start()
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assert.is_true(profile_cmp(s1, s2) > 0)
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assert.is_true(profile_cmp(s2, s1) < 0)
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end)
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it('can compare the zero element', function()
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assert.is_true(profile_cmp(profile_zero(), profile_zero()) == 0)
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end)
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it('correctly orders divisions', function()
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local start = profile_start()
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assert.is_true(profile_cmp(start, profile_divide(start, 10)) <= 0)
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end)
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end)
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describe('profile_divide', function()
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it('actually performs division', function()
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-- note: the routine actually performs floating-point division to get
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-- better rounding behaviour, we have to take that into account when
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-- checking. (check range, not exact number).
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local divisor = 10
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local start = profile_start()
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local divided = profile_divide(start, divisor)
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local res = divided
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for _ = 1, divisor - 1 do
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res = profile_add(res, divided)
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end
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-- res should be in the range [start - divisor, start + divisor]
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local start_min, start_max = profile_sub(start, divisor), profile_add(start, divisor)
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assert.is_true(profile_cmp(start_min, res) >= 0)
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assert.is_true(profile_cmp(start_max, res) <= 0)
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end)
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end)
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describe('profile_zero', function()
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it('returns the same value on each call', function()
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eq(0, profile_zero())
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assert.is_true(profile_equal(profile_zero(), profile_zero()))
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end)
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end)
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describe('profile_start', function()
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it('increases', function()
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local last = profile_start()
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for _ = 1, 100 do
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local curr = profile_start()
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gte(curr, last)
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last = curr
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end
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end)
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end)
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describe('profile_end', function()
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it('the elapsed time cannot be zero', function()
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neq(profile_zero(), profile_end(profile_start()))
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end)
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it('outer elapsed >= inner elapsed', function()
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for _ = 1, 100 do
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local start_outer = profile_start()
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local start_inner = profile_start()
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local elapsed_inner = profile_end(start_inner)
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local elapsed_outer = profile_end(start_outer)
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gte(elapsed_outer, elapsed_inner)
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end
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end)
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end)
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describe('profile_setlimit', function()
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it('sets no limit when 0 is passed', function()
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eq(true, profile_equal(profile_setlimit(0), profile_zero()))
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end)
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it('sets a limit in the future otherwise', function()
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local future = profile_setlimit(1000)
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local now = profile_start()
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assert.is_true(profile_cmp(future, now) < 0)
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end)
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end)
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describe('profile_passed_limit', function()
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it('start is in the past', function()
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local start = profile_start()
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eq(true, profile_passed_limit(start))
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end)
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it('start + start is in the future', function()
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local start = profile_start()
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local future = profile_add(start, start)
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eq(false, profile_passed_limit(future))
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end)
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end)
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describe('profile_msg', function()
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it('prints the zero time as 0.00000', function()
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local str = trim(profile_msg(profile_zero()))
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eq(str, "0.000000")
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end)
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it('prints the time passed, in seconds.microsends', function()
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local start = profile_start()
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local endt = profile_end(start)
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local str = trim(profile_msg(endt))
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local spl = split(str, ".")
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-- string has two parts (before dot and after dot)
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eq(2, #spl)
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local s, us = spl[1], spl[2]
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-- zero seconds have passed (if this is not true, either LuaJIT is too
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-- slow or the profiling functions are too slow and need to be fixed)
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eq(s, "0")
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-- more or less the same goes for the microsecond part, if it doesn't
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-- start with 0, it's too slow.
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assert.is_true(starts(us, "0"))
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end)
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end)
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describe('profile_add', function()
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it('adds profiling times', function()
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local start = profile_start()
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assert.equals(start, profile_add(profile_zero(), start))
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end)
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end)
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describe('profile_sub', function()
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it('subtracts profiling times', function()
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-- subtracting zero does nothing
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local start = profile_start()
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assert.equals(start, profile_sub(start, profile_zero()))
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local start1, start2, start3 = profile_start(), profile_start(), profile_start()
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local cmp = profile_cmp(profile_sub(start2, start1), profile_sub(start3, start1))
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-- t2 >= t1 => profile_cmp(t1, t2) >= 0
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assert.is_true(cmp >= 0)
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cmp = profile_cmp(profile_sub(start3, start1), profile_sub(start2, start1))
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-- t2 <= t1 => profile_cmp(t1, t2) <= 0
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assert.is_true(cmp <= 0)
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end)
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end)
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end)
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