prosody
9dc34e1556d9
spec/util_ringbuffer_spec.lua

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spec/util_ringbuffer_spec.lua @ 10911:9dc34e1556d9

util.human.io.table: Allow a map callaback per column This allows e.g. mapping booleans to "yes" or "no", specific number formatting or generating virtual columns. All while not mutating the underlying data or creating additional temporary tables.
author Kim Alvefur <zash@zash.se>
date Thu, 04 Jun 2020 21:32:28 +0200
parent 10901:5e33926f4b43
child 10949:8b5b35baf370
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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);
10901
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27 describe(":sub", function ()
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28 -- Helper function to compare buffer:sub() with string:sub()
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29 local function test_sub(b, x, y)
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30 local s = b:read(#b, true);
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31 local string_result, buffer_result = s:sub(x, y), b:sub(x, y);
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32 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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33 end
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34
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35 it("works", function ()
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36 local b = rb.new();
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37 b:write("hello world");
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38 assert.equals("hello", b:sub(1, 5));
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39 end);
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40
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41 it("supports optional end parameter", function ()
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42 local b = rb.new();
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43 b:write("hello world");
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44 assert.equals("hello world", b:sub(1));
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45 assert.equals("world", b:sub(-5));
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46 end);
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47
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48 it("is equivalent to string:sub", function ()
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49 local b = rb.new(6);
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50 b:write("foobar");
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51 b:read(3);
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52 b:write("foo");
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53 for i = -13, 13 do
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54 for j = -13, 13 do
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55 test_sub(b, i, j);
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56 end
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57 end
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58 end);
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59 end);
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60
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61 describe(":byte", function ()
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62 -- Helper function to compare buffer:byte() with string:byte()
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63 local function test_byte(b, x, y)
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64 local s = b:read(#b, true);
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65 local string_result, buffer_result = {s:byte(x, y)}, {b:byte(x, y)};
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66 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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67 end
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68
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69 it("is equivalent to string:byte", function ()
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70 local b = rb.new(6);
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71 b:write("foobar");
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72 b:read(3);
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73 b:write("foo");
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74 test_byte(b, 1);
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75 test_byte(b, 3);
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76 test_byte(b, -1);
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77 test_byte(b, -3);
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78 for i = -13, 13 do
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79 for j = -13, 13 do
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80 test_byte(b, i, j);
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81 end
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82 end
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83 end);
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84 end);
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85 end);