prosody
71c28b36923f
spec/util_ringbuffer_spec.lua

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spec/util_ringbuffer_spec.lua @ 13224:71c28b36923f

mod_auth_ldap: Use enum option method
author Kim Alvefur <zash@zash.se>
date Tue, 18 Jul 2023 12:31:29 +0200
parent 10960:f84e0e2faae2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
10897
37df1e757f02 util.ringbuffer: Add some initial tests
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1 local rb = require "util.ringbuffer";
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2 describe("util.ringbuffer", function ()
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3 describe("#new", function ()
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4 it("has a constructor", function ()
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5 assert.Function(rb.new);
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6 end);
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7 it("can be created", function ()
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8 assert.truthy(rb.new());
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9 end);
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10 it("won't create an empty buffer", function ()
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11 assert.has_error(function ()
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12 rb.new(0);
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13 end);
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14 end);
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15 it("won't create a negatively sized buffer", function ()
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16 assert.has_error(function ()
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17 rb.new(-1);
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18 end);
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19 end);
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20 end);
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21 describe(":write", function ()
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22 local b = rb.new();
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23 it("works", function ()
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24 assert.truthy(b:write("hi"));
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25 end);
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26 end);
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27
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28 describe(":discard", function ()
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29 local b = rb.new();
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30 it("works", function ()
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31 assert.truthy(b:write("hello world"));
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32 assert.truthy(b:discard(6));
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33 assert.equal(5, #b);
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34 assert.equal("world", b:read(5));
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35 end);
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36 end);
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37
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38 describe(":sub", function ()
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39 -- Helper function to compare buffer:sub() with string:sub()
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40 local function test_sub(b, x, y)
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41 local s = b:read(#b, true);
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42 local string_result, buffer_result = s:sub(x, y), b:sub(x, y);
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43 assert.equals(string_result, buffer_result, ("buffer:sub(%d, %s) does not match string:sub()"):format(x, y and ("%d"):format(y) or "nil"));
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44 end
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45
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46 it("works", function ()
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47 local b = rb.new();
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48 assert.truthy(b:write("hello world"));
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49 assert.equals("hello", b:sub(1, 5));
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50 end);
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51
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52 it("supports optional end parameter", function ()
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53 local b = rb.new();
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54 assert.truthy(b:write("hello world"));
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55 assert.equals("hello world", b:sub(1));
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56 assert.equals("world", b:sub(-5));
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57 end);
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58
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59 it("is equivalent to string:sub", function ()
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60 local b = rb.new(6);
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61 assert.truthy(b:write("foobar"));
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62 b:read(3);
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63 b:write("foo");
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64 for i = -13, 13 do
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65 for j = -13, 13 do
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66 test_sub(b, i, j);
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67 end
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68 end
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69 end);
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70 end);
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71
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72 describe(":byte", function ()
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73 -- Helper function to compare buffer:byte() with string:byte()
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74 local function test_byte(b, x, y)
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75 local s = b:read(#b, true);
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76 local string_result, buffer_result = {s:byte(x, y)}, {b:byte(x, y)};
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77 assert.same(string_result, buffer_result, ("buffer:byte(%d, %s) does not match string:byte()"):format(x, y and ("%d"):format(y) or "nil"));
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78 end
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79
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80 it("is equivalent to string:byte", function ()
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81 local b = rb.new(6);
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82 assert.truthy(b:write("foobar"));
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83 b:read(3);
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84 b:write("foo");
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85 test_byte(b, 1);
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86 test_byte(b, 3);
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87 test_byte(b, -1);
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88 test_byte(b, -3);
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89 for i = -13, 13 do
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90 for j = -13, 13 do
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91 test_byte(b, i, j);
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92 end
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93 end
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94 end);
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95
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96 it("works with characters > 127", function ()
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97 local b = rb.new();
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98 b:write(string.char(0, 140));
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99 local r = { b:byte(1, 2) };
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100 assert.same({ 0, 140 }, r);
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101 end);
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102 end);
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103 end);