prosody
d742095046f9
spec/util_dbuffer_spec.lua

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spec/util_dbuffer_spec.lua @ 10996:d742095046f9

net.cqueues: Switch to server.watchfd for main loop integration Why? Just look at all that code deleted! watchfd is the prefered way to poll things that expose FDs for this purpose, altho it was added after net.cqueues.
author Kim Alvefur <zash@zash.se>
date Wed, 08 Jul 2020 20:11:49 +0200
parent 10980:eaee72c7afbd
child 11028:d7a403060946
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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39991e40d1dc util.dbuffer: dynamic string buffer
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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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eaee72c7afbd util.dbuffer: If no bytes parameter passed to read, return remainder of frontmost chunk
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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(":sub", function ()
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50 -- Helper function to compare buffer:sub() with string:sub()
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51 local s = "hello world";
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52 local function test_sub(b, x, y)
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53 local string_result, buffer_result = s:sub(x, y), b:sub(x, y);
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54 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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55 end
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56
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57 it("works", function ()
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58 local b = dbuffer.new();
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59 assert.truthy(b:write("hello world"));
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60 assert.equals("hello", b:sub(1, 5));
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61 end);
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62
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63 it("supports optional end parameter", function ()
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64 local b = dbuffer.new();
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65 assert.truthy(b:write("hello world"));
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66 assert.equals("hello world", b:sub(1));
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67 assert.equals("world", b:sub(-5));
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68 end);
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69
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70 it("is equivalent to string:sub", function ()
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71 local b = dbuffer.new(11);
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72 assert.truthy(b:write(s));
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73 for i = -13, 13 do
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74 for j = -13, 13 do
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75 test_sub(b, i, j);
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76 end
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77 end
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78 end);
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79 end);
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80
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81 describe(":byte", function ()
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82 -- Helper function to compare buffer:byte() with string:byte()
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83 local s = "hello world"
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84 local function test_byte(b, x, y)
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85 local string_result, buffer_result = {s:byte(x, y)}, {b:byte(x, y)};
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86 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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87 end
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88
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89 it("is equivalent to string:byte", function ()
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90 local b = dbuffer.new(11);
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91 assert.truthy(b:write(s));
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92 test_byte(b, 1);
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93 test_byte(b, 3);
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94 test_byte(b, -1);
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95 test_byte(b, -3);
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96 for i = -13, 13 do
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97 for j = -13, 13 do
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98 test_byte(b, i, j);
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99 end
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100 end
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101 end);
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102
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103 it("works with characters > 127", function ()
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104 local b = dbuffer.new();
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105 b:write(string.char(0, 140));
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106 local r = { b:byte(1, 2) };
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107 assert.same({ 0, 140 }, r);
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108 end);
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109 end);
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110 end);