prosody
06453c564141
spec/util_ringbuffer_spec.lua

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spec/util_ringbuffer_spec.lua @ 13014:06453c564141

util.startup: Add prosody.started promise to easily execute code after startup To avoid a race where server-started fires before the promise function body is run (on next tick), I moved server-started to fire on the next tick, which seems sensible anyway. Errors are logged, I'm not sure if we ought to be doing something more here. I'm sure we'll find out.
author Matthew Wild <mwild1@gmail.com>
date Sat, 01 Apr 2023 11:56:38 +0100
parent 10960:f84e0e2faae2
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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);