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spec/util_throttle_spec.lua @ 13267:7ae000fc8c07 0.12
mod_muc_mam: Improve wording of enable setting
Suggested by jstein in the chat
This option label is used by XMPP clients to explain what the option does.
a) The user should know where the data is archived.
b) The user needs a statement that can be enabled/disabled by the variable. A question would have the wrong logic here.
author | Kim Alvefur <zash@zash.se> |
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date | Sun, 15 Oct 2023 14:43:11 +0200 |
parent | 9993:02a41315d275 |
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-- Mock util.time local now = 0; -- wibbly-wobbly... timey-wimey... stuff local function later(n) now = now + n; -- time passes at a different rate end package.loaded["util.time"] = { now = function() return now; end } local throttle = require "util.throttle"; describe("util.throttle", function() describe("#create()", function() it("should be created with correct values", function() now = 5; local a = throttle.create(3, 10); assert.same(a, { balance = 3, max = 3, rate = 0.3, t = 5 }); local a = throttle.create(3, 5); assert.same(a, { balance = 3, max = 3, rate = 0.6, t = 5 }); local a = throttle.create(1, 1); assert.same(a, { balance = 1, max = 1, rate = 1, t = 5 }); local a = throttle.create(10, 10); assert.same(a, { balance = 10, max = 10, rate = 1, t = 5 }); local a = throttle.create(10, 1); assert.same(a, { balance = 10, max = 10, rate = 10, t = 5 }); end); end); describe("#update()", function() it("does nothing when no time has passed, even if balance is not full", function() now = 5; local a = throttle.create(10, 10); for i=1,5 do a:update(); assert.same(a, { balance = 10, max = 10, rate = 1, t = 5 }); end a.balance = 0; for i=1,5 do a:update(); assert.same(a, { balance = 0, max = 10, rate = 1, t = 5 }); end end); it("updates only time when time passes but balance is full", function() now = 5; local a = throttle.create(10, 10); for i=1,5 do later(5); a:update(); assert.same(a, { balance = 10, max = 10, rate = 1, t = 5 + i*5 }); end end); it("updates balance when balance has room to grow as time passes", function() now = 5; local a = throttle.create(10, 10); a.balance = 0; assert.same(a, { balance = 0, max = 10, rate = 1, t = 5 }); later(1); a:update(); assert.same(a, { balance = 1, max = 10, rate = 1, t = 6 }); later(3); a:update(); assert.same(a, { balance = 4, max = 10, rate = 1, t = 9 }); later(10); a:update(); assert.same(a, { balance = 10, max = 10, rate = 1, t = 19 }); end); it("handles 10 x 0.1s updates the same as 1 x 1s update ", function() now = 5; local a = throttle.create(1, 1); a.balance = 0; later(1); a:update(); assert.same(a, { balance = 1, max = 1, rate = 1, t = now }); a.balance = 0; for i=1,10 do later(0.1); a:update(); end assert(math.abs(a.balance - 1) < 0.0001); -- incremental updates cause rounding errors end); end); -- describe("po") describe("#poll()", function() it("should only allow successful polls until cost is hit", function() now = 5; local a = throttle.create(3, 10); assert.same(a, { balance = 3, max = 3, rate = 0.3, t = 5 }); assert.is_true(a:poll(1)); -- 3 -> 2 assert.same(a, { balance = 2, max = 3, rate = 0.3, t = 5 }); assert.is_true(a:poll(2)); -- 2 -> 1 assert.same(a, { balance = 0, max = 3, rate = 0.3, t = 5 }); assert.is_false(a:poll(1)); -- MEEP, out of credits! assert.is_false(a:poll(1)); -- MEEP, out of credits! assert.same(a, { balance = 0, max = 3, rate = 0.3, t = 5 }); end); it("should not allow polls more than the cost", function() now = 0; local a = throttle.create(10, 10); assert.same(a, { balance = 10, max = 10, rate = 1, t = 0 }); assert.is_false(a:poll(11)); assert.same(a, { balance = 10, max = 10, rate = 1, t = 0 }); assert.is_true(a:poll(6)); assert.same(a, { balance = 4, max = 10, rate = 1, t = 0 }); assert.is_false(a:poll(5)); assert.same(a, { balance = 4, max = 10, rate = 1, t = 0 }); -- fractional assert.is_true(a:poll(3.5)); assert.same(a, { balance = 0.5, max = 10, rate = 1, t = 0 }); assert.is_true(a:poll(0.25)); assert.same(a, { balance = 0.25, max = 10, rate = 1, t = 0 }); assert.is_false(a:poll(0.3)); assert.same(a, { balance = 0.25, max = 10, rate = 1, t = 0 }); assert.is_true(a:poll(0.25)); assert.same(a, { balance = 0, max = 10, rate = 1, t = 0 }); assert.is_false(a:poll(0.1)); assert.same(a, { balance = 0, max = 10, rate = 1, t = 0 }); assert.is_true(a:poll(0)); assert.same(a, { balance = 0, max = 10, rate = 1, t = 0 }); end); end); end);