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spec/util_random_spec.lua @ 10973:39991e40d1dc

util.dbuffer: dynamic string buffer Similar to util.ringbuffer (and shares almost identical API). Differences: - size limit is optional and dynamic - does not allocate a fixed buffer of max_size bytes - focus on simply storing references to existing string objects where possible, avoiding unnecessary allocations - references are still stored in a ring buffer to enable use as a fast FIFO Optional second parameter to new() provides the number of ring buffer segments. On Lua 5.2 on my laptop, a segment is ~19 bytes. If the ring buffer fills up, the next write will compact all strings into a single item.
author Matthew Wild <mwild1@gmail.com>
date Fri, 26 Jun 2020 16:41:31 +0100
parent 8450:3a9a3d90c44c
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1
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2 local random = require "util.random";
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3
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4 describe("util.random", function()
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5 describe("#bytes()", function()
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6 it("should return a string", function()
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7 assert.is_string(random.bytes(16));
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8 end);
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9
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10 it("should return the requested number of bytes", function()
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11 -- Makes no attempt at testing how random the bytes are,
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12 -- just that it returns the number of bytes requested
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13
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14 for i = 1, 20 do
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15 assert.are.equal(2^i, #random.bytes(2^i));
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16 end
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17 end);
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18 end);
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19 end);