prosody
c560531d9a6e
spec/util_dbuffer_spec.lua

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spec/util_dbuffer_spec.lua @ 11040:c560531d9a6e

mod_external_services: Validate services added via events While writing developer documentation it became obvious that i was silly to have one item format for config and items API, and another format for the event API. Then there's the stanza format, but that's a common pattern. This change reduces the possible input formats to two and allows other modules the benefit of the processing and validation performed on items from the config.
author Kim Alvefur <zash@zash.se>
date Mon, 17 Aug 2020 00:24:11 +0200
parent 11028:d7a403060946
child 11044:7b720a815519
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1 local dbuffer = require "util.dbuffer";
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2 describe("util.dbuffer", 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(dbuffer.new);
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6 end);
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7 it("can be created", function ()
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8 assert.truthy(dbuffer.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.falsy(dbuffer.new(0));
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12 end);
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13 it("won't create a negatively sized buffer", function ()
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14 assert.falsy(dbuffer.new(-1));
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15 end);
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16 end);
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17 describe(":write", function ()
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18 local b = dbuffer.new();
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19 it("works", function ()
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20 assert.truthy(b:write("hi"));
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21 end);
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22 end);
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23
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24 describe(":read", function ()
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25 it("supports optional bytes parameter", function ()
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26 -- should return the frontmost chunk
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27 local b = dbuffer.new();
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28 assert.truthy(b:write("hello"));
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29 assert.truthy(b:write(" "));
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30 assert.truthy(b:write("world"));
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31 assert.equal("h", b:read(1));
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32
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33 assert.equal("ello", b:read());
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34 assert.equal(" ", b:read());
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35 assert.equal("world", b:read());
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36 end);
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37 end);
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38
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39 describe(":discard", function ()
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40 local b = dbuffer.new();
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41 it("works", function ()
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42 assert.truthy(b:write("hello world"));
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43 assert.truthy(b:discard(6));
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44 assert.equal(5, b:length());
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45 assert.equal("world", b:read(5));
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46 end);
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47 end);
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48
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49 describe(":collapse()", function ()
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50 it("works on an empty buffer", function ()
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51 local b = dbuffer.new();
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52 b:collapse();
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53 end);
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54 end);
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55
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56 describe(":sub", function ()
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57 -- Helper function to compare buffer:sub() with string:sub()
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58 local s = "hello world";
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59 local function test_sub(b, x, y)
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60 local string_result, buffer_result = s:sub(x, y), b:sub(x, y);
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61 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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62 end
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63
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64 it("works", function ()
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65 local b = dbuffer.new();
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66 assert.truthy(b:write("hello world"));
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67 assert.equals("hello", b:sub(1, 5));
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68 end);
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69
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70 it("supports optional end parameter", function ()
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71 local b = dbuffer.new();
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72 assert.truthy(b:write("hello world"));
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73 assert.equals("hello world", b:sub(1));
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74 assert.equals("world", b:sub(-5));
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75 end);
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76
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77 it("is equivalent to string:sub", function ()
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78 local b = dbuffer.new(11);
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79 assert.truthy(b:write(s));
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80 for i = -13, 13 do
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81 for j = -13, 13 do
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82 test_sub(b, i, j);
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83 end
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84 end
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85 end);
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86 end);
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87
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88 describe(":byte", function ()
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89 -- Helper function to compare buffer:byte() with string:byte()
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90 local s = "hello world"
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91 local function test_byte(b, x, y)
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92 local string_result, buffer_result = {s:byte(x, y)}, {b:byte(x, y)};
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93 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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94 end
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95
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96 it("is equivalent to string:byte", function ()
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97 local b = dbuffer.new(11);
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98 assert.truthy(b:write(s));
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99 test_byte(b, 1);
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100 test_byte(b, 3);
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101 test_byte(b, -1);
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102 test_byte(b, -3);
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103 for i = -13, 13 do
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104 for j = -13, 13 do
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105 test_byte(b, i, j);
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106 end
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107 end
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108 end);
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109
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110 it("works with characters > 127", function ()
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111 local b = dbuffer.new();
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112 b:write(string.char(0, 140));
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113 local r = { b:byte(1, 2) };
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114 assert.same({ 0, 140 }, r);
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115 end);
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116
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117 it("works on an empty buffer", function ()
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118 local b = dbuffer.new();
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119 assert.equal("", b:sub(1,1));
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120 end);
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121 end);
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122 end);