prosody
edd006093533
spec/util_strbitop_spec.lua

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spec/util_strbitop_spec.lua @ 13715:edd006093533 13.0

util.sql: Don't send SQLCipher key to Postgres or MySQL (thanks gllmhyt) This was copied from util.sqlite3 which only deals with SQLite3, but here Postgres or MySQL are also possibilities, which wouldn't support this.
author Kim Alvefur <zash@zash.se>
date Sun, 16 Feb 2025 11:52:07 +0100
parent 13430:1a5e3cf037f6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
11168
cde600e2fdf9 util.strbitop: Add tests covering basics
Kim Alvefur <zash@zash.se>
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1 local strbitop = require "util.strbitop";
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2 describe("util.strbitop", function ()
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3 describe("sand()", function ()
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4 it("works", function ()
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5 assert.equal(string.rep("Aa", 100), strbitop.sand(string.rep("a", 200), "Aa"));
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6 end);
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7 it("returns empty string if first argument is empty", function ()
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8 assert.equal("", strbitop.sand("", ""));
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9 assert.equal("", strbitop.sand("", "key"));
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10 end);
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11 it("returns initial string if key is empty", function ()
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12 assert.equal("hello", strbitop.sand("hello", ""));
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13 end);
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14 end);
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15
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16 describe("sor()", function ()
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17 it("works", function ()
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18 assert.equal(string.rep("a", 200), strbitop.sor(string.rep("Aa", 100), "a"));
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19 end);
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20 it("returns empty string if first argument is empty", function ()
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21 assert.equal("", strbitop.sor("", ""));
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22 assert.equal("", strbitop.sor("", "key"));
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23 end);
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24 it("returns initial string if key is empty", function ()
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25 assert.equal("hello", strbitop.sor("hello", ""));
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26 end);
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27 end);
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28
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29 describe("sxor()", function ()
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30 it("works", function ()
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31 assert.equal(string.rep("Aa", 100), strbitop.sxor(string.rep("a", 200), " \0"));
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32 end);
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33 it("returns empty string if first argument is empty", function ()
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34 assert.equal("", strbitop.sxor("", ""));
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35 assert.equal("", strbitop.sxor("", "key"));
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36 end);
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37 it("returns initial string if key is empty", function ()
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38 assert.equal("hello", strbitop.sxor("hello", ""));
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39 end);
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40 end);
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41
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42 describe("common_prefix_bits()", function ()
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43 local function B(s)
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44 assert(#s%8==0, "Invalid test input: B(s): s should be a multiple of 8 bits in length");
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45 local byte = 0;
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46 local out_str = {};
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47 for i = 1, #s do
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48 local bit_ascii = s:byte(i);
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49 if bit_ascii == 49 then -- '1'
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50 byte = byte + 2^((7-(i-1))%8);
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51 elseif bit_ascii ~= 48 then
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52 error("Invalid test input: B(s): s should contain only '0' or '1' characters");
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53 end
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54 if (i-1)%8 == 7 then
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55 table.insert(out_str, string.char(byte));
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56 byte = 0;
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57 end
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58 end
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59 return table.concat(out_str);
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60 end
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61
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62 local _cpb = strbitop.common_prefix_bits;
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63 local function test(a, b)
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64 local Ba, Bb = B(a), B(b);
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65 local ret1 = _cpb(Ba, Bb);
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66 local ret2 = _cpb(Bb, Ba);
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67 assert(ret1 == ret2, ("parameter order should not make a difference to the result (%s, %s) = %d, reversed = %d"):format(a, b, ret1, ret2));
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68 return ret1;
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69 end
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70
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71 it("works on single bytes", function ()
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72 assert.equal(0, test("00000000", "11111111"));
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73 assert.equal(1, test("10000000", "11111111"));
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74 assert.equal(0, test("01000000", "11111111"));
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75 assert.equal(0, test("01000000", "11111111"));
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76 assert.equal(8, test("11111111", "11111111"));
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77 end);
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78
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79 it("works on multiple bytes", function ()
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80 for i = 0, 16 do
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81 assert.equal(i, test(string.rep("1", i)..string.rep("0", 16-i), "1111111111111111"));
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82 end
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83 end);
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84 end);
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85 end);