prosody
0.11.12
spec/util_stanza_spec.lua

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spec/util_stanza_spec.lua @ 12181:783056b4e448 0.11 0.11.12

util.xml: Do not allow doctypes, comments or processing instructions Yes. This is as bad as it sounds. CVE pending. In Prosody itself, this only affects mod_websocket, which uses util.xml to parse the <open/> frame, thus allowing unauthenticated remote DoS using Billion Laughs. However, third-party modules using util.xml may also be affected by this. This commit installs handlers which disallow the use of doctype declarations and processing instructions without any escape hatch. It, by default, also introduces such a handler for comments, however, there is a way to enable comments nontheless. This is because util.xml is used to parse human-facing data, where comments are generally a desirable feature, and also because comments are generally harmless.
author Jonas Schäfer <jonas@wielicki.name>
date Mon, 10 Jan 2022 18:23:54 +0100
parent 11205:9d1e21c23784
child 11206:f051394762ff
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1
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2 local st = require "util.stanza";
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3
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4 describe("util.stanza", function()
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5 describe("#preserialize()", function()
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6 it("should work", function()
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7 local stanza = st.stanza("message", { type = "chat" }):text_tag("body", "Hello");
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8 local stanza2 = st.preserialize(stanza);
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9 assert.is_table(stanza2, "Preserialized stanza is a table");
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10 assert.is_nil(getmetatable(stanza2), "Preserialized stanza has no metatable");
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11 assert.is_string(stanza2.name, "Preserialized stanza has a name field");
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12 assert.equal(stanza.name, stanza2.name, "Preserialized stanza has same name as the input stanza");
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13 assert.same(stanza.attr, stanza2.attr, "Preserialized stanza same attr table as input stanza");
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14 assert.is_nil(stanza2.tags, "Preserialized stanza has no tag list");
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15 assert.is_nil(stanza2.last_add, "Preserialized stanza has no last_add marker");
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16 assert.is_table(stanza2[1], "Preserialized child element preserved");
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17 assert.equal("body", stanza2[1].name, "Preserialized child element name preserved");
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18 end);
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19 end);
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20
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21 describe("#deserialize()", function()
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22 it("should work", function()
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23 local stanza = { name = "message", attr = { type = "chat" }, { name = "body", attr = { }, "Hello" } };
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24 local stanza2 = st.deserialize(st.preserialize(stanza));
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25
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26 assert.is_table(stanza2, "Deserialized stanza is a table");
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27 assert.equal(st.stanza_mt, getmetatable(stanza2), "Deserialized stanza has stanza metatable");
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28 assert.is_string(stanza2.name, "Deserialized stanza has a name field");
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29 assert.equal(stanza.name, stanza2.name, "Deserialized stanza has same name as the input table");
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30 assert.same(stanza.attr, stanza2.attr, "Deserialized stanza same attr table as input table");
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31 assert.is_table(stanza2.tags, "Deserialized stanza has tag list");
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32 assert.is_table(stanza2[1], "Deserialized child element preserved");
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33 assert.equal("body", stanza2[1].name, "Deserialized child element name preserved");
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34 end);
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35 end);
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36
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37 describe("#stanza()", function()
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38 it("should work", function()
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39 local s = st.stanza("foo", { xmlns = "myxmlns", a = "attr-a" });
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40 assert.are.equal(s.name, "foo");
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41 assert.are.equal(s.attr.xmlns, "myxmlns");
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42 assert.are.equal(s.attr.a, "attr-a");
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43
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44 local s1 = st.stanza("s1");
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45 assert.are.equal(s1.name, "s1");
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46 assert.are.equal(s1.attr.xmlns, nil);
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47 assert.are.equal(#s1, 0);
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48 assert.are.equal(#s1.tags, 0);
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49
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50 s1:tag("child1");
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51 assert.are.equal(#s1.tags, 1);
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52 assert.are.equal(s1.tags[1].name, "child1");
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53
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54 s1:tag("grandchild1"):up();
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55 assert.are.equal(#s1.tags, 1);
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56 assert.are.equal(s1.tags[1].name, "child1");
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57 assert.are.equal(#s1.tags[1], 1);
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58 assert.are.equal(s1.tags[1][1].name, "grandchild1");
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59
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60 s1:up():tag("child2");
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61 assert.are.equal(#s1.tags, 2, tostring(s1));
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62 assert.are.equal(s1.tags[1].name, "child1");
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63 assert.are.equal(s1.tags[2].name, "child2");
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64 assert.are.equal(#s1.tags[1], 1);
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65 assert.are.equal(s1.tags[1][1].name, "grandchild1");
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66
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67 s1:up():text("Hello world");
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68 assert.are.equal(#s1.tags, 2);
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69 assert.are.equal(#s1, 3);
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70 assert.are.equal(s1.tags[1].name, "child1");
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71 assert.are.equal(s1.tags[2].name, "child2");
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72 assert.are.equal(#s1.tags[1], 1);
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73 assert.are.equal(s1.tags[1][1].name, "grandchild1");
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74 end);
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75 it("should work with unicode values", function ()
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76 local s = st.stanza("Объект", { xmlns = "myxmlns", ["Объект"] = "&" });
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77 assert.are.equal(s.name, "Объект");
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78 assert.are.equal(s.attr.xmlns, "myxmlns");
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79 assert.are.equal(s.attr["Объект"], "&");
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80 end);
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81 it("should allow :text() with nil and empty strings", function ()
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82 local s_control = st.stanza("foo");
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83 assert.same(st.stanza("foo"):text(), s_control);
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84 assert.same(st.stanza("foo"):text(nil), s_control);
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85 assert.same(st.stanza("foo"):text(""), s_control);
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86 end);
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87 end);
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88
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89 describe("#message()", function()
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90 it("should work", function()
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91 local m = st.message();
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92 assert.are.equal(m.name, "message");
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93 end);
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94 end);
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95
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96 describe("#iq()", function()
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97 it("should create an iq stanza", function()
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98 local i = st.iq({ id = "foo" });
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99 assert.are.equal("iq", i.name);
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100 assert.are.equal("foo", i.attr.id);
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101 end);
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102
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103 it("should reject stanzas with no id", function ()
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104 assert.has.error_match(function ()
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105 st.iq();
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106 end, "id attribute");
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107
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108 assert.has.error_match(function ()
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109 st.iq({ foo = "bar" });
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110 end, "id attribute");
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111 end);
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112 end);
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113
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114 describe("#presence()", function ()
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115 it("should work", function()
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116 local p = st.presence();
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117 assert.are.equal(p.name, "presence");
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118 end);
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119 end);
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120
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121 describe("#reply()", function()
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122 it("should work for <s>", function()
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123 -- Test stanza
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124 local s = st.stanza("s", { to = "touser", from = "fromuser", id = "123" })
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125 :tag("child1");
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126 -- Make reply stanza
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127 local r = st.reply(s);
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128 assert.are.equal(r.name, s.name);
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129 assert.are.equal(r.id, s.id);
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130 assert.are.equal(r.attr.to, s.attr.from);
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131 assert.are.equal(r.attr.from, s.attr.to);
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132 assert.are.equal(#r.tags, 0, "A reply should not include children of the original stanza");
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133 end);
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134
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135 it("should work for <iq get>", function()
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136 -- Test stanza
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137 local s = st.stanza("iq", { to = "touser", from = "fromuser", id = "123", type = "get" })
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138 :tag("child1");
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139 -- Make reply stanza
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140 local r = st.reply(s);
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141 assert.are.equal(r.name, s.name);
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142 assert.are.equal(r.id, s.id);
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143 assert.are.equal(r.attr.to, s.attr.from);
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144 assert.are.equal(r.attr.from, s.attr.to);
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145 assert.are.equal(r.attr.type, "result");
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146 assert.are.equal(#r.tags, 0, "A reply should not include children of the original stanza");
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147 end);
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148
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149 it("should work for <iq set>", function()
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150 -- Test stanza
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151 local s = st.stanza("iq", { to = "touser", from = "fromuser", id = "123", type = "set" })
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152 :tag("child1");
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153 -- Make reply stanza
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154 local r = st.reply(s);
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155 assert.are.equal(r.name, s.name);
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156 assert.are.equal(r.id, s.id);
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157 assert.are.equal(r.attr.to, s.attr.from);
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158 assert.are.equal(r.attr.from, s.attr.to);
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159 assert.are.equal(r.attr.type, "result");
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160 assert.are.equal(#r.tags, 0, "A reply should not include children of the original stanza");
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161 end);
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162 end);
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163
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164 describe("#error_reply()", function()
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165 it("should work for <s>", function()
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166 -- Test stanza
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167 local s = st.stanza("s", { to = "touser", from = "fromuser", id = "123" })
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168 :tag("child1");
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169 -- Make reply stanza
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170 local r = st.error_reply(s, "cancel", "service-unavailable");
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171 assert.are.equal(r.name, s.name);
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172 assert.are.equal(r.id, s.id);
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173 assert.are.equal(r.attr.to, s.attr.from);
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174 assert.are.equal(r.attr.from, s.attr.to);
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175 assert.are.equal(#r.tags, 1);
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176 assert.are.equal(r.tags[1].tags[1].name, "service-unavailable");
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177 end);
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178
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179 it("should work for <iq get>", function()
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180 -- Test stanza
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181 local s = st.stanza("iq", { to = "touser", from = "fromuser", id = "123", type = "get" })
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182 :tag("child1");
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183 -- Make reply stanza
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184 local r = st.error_reply(s, "cancel", "service-unavailable");
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185 assert.are.equal(r.name, s.name);
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186 assert.are.equal(r.id, s.id);
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187 assert.are.equal(r.attr.to, s.attr.from);
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188 assert.are.equal(r.attr.from, s.attr.to);
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189 assert.are.equal(r.attr.type, "error");
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190 assert.are.equal(#r.tags, 1);
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191 assert.are.equal(r.tags[1].tags[1].name, "service-unavailable");
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192 end);
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193 end);
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194
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195 describe("should reject #invalid", function ()
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196 local invalid_names = {
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197 ["empty string"] = "", ["characters"] = "<>";
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198 }
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199 local invalid_data = {
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200 ["number"] = 1234, ["table"] = {};
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201 ["utf8"] = string.char(0xF4, 0x90, 0x80, 0x80);
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202 ["nil"] = "nil"; ["boolean"] = true;
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203 ["control characters"] = "\0\1\2\3";
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204 };
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205
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206 for value_type, value in pairs(invalid_names) do
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207 it(value_type.." in tag names", function ()
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208 assert.error_matches(function ()
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209 st.stanza(value);
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210 end, value_type);
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211 end);
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212 it(value_type.." in attribute names", function ()
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213 assert.error_matches(function ()
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214 st.stanza("valid", { [value] = "valid" });
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215 end, value_type);
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216 end);
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217 end
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218 for value_type, value in pairs(invalid_data) do
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219 if value == "nil" then value = nil; end
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220 it(value_type.." in tag names", function ()
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221 assert.error_matches(function ()
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222 st.stanza(value);
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223 end, value_type);
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224 end);
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225 it(value_type.." in attribute names", function ()
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226 assert.error_matches(function ()
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227 st.stanza("valid", { [value] = "valid" });
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228 end, value_type);
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229 end);
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230 if value ~= nil then
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231 it(value_type.." in attribute values", function ()
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232 assert.error_matches(function ()
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233 st.stanza("valid", { valid = value });
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234 end, value_type);
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235 end);
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236 it(value_type.." in text node", function ()
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237 assert.error_matches(function ()
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238 st.stanza("valid"):text(value);
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239 end, value_type);
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240 end);
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241 end
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242 end
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243 end);
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244
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245 describe("#is_stanza", function ()
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246 -- is_stanza(any) -> boolean
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247 it("identifies stanzas as stanzas", function ()
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248 assert.truthy(st.is_stanza(st.stanza("x")));
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249 end);
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250 it("identifies strings as not stanzas", function ()
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251 assert.falsy(st.is_stanza(""));
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252 end);
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253 it("identifies numbers as not stanzas", function ()
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254 assert.falsy(st.is_stanza(1));
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255 end);
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256 it("identifies tables as not stanzas", function ()
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diff changeset
257 assert.falsy(st.is_stanza({}));
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diff changeset
258 end);
e3e9479d526e util.stanza: Test coverage of is_stanza()
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parents: 8599
diff changeset
259 end);
9000
4d64ff0719a6 util.stanza: Brief tests for :remove_children
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diff changeset
260
4d64ff0719a6 util.stanza: Brief tests for :remove_children
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diff changeset
261 describe("#remove_children", function ()
4d64ff0719a6 util.stanza: Brief tests for :remove_children
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diff changeset
262 it("should work", function ()
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parents: 8641
diff changeset
263 local s = st.stanza("x", {xmlns="test"})
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264 :tag("y", {xmlns="test"}):up()
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265 :tag("z", {xmlns="test2"}):up()
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266 :tag("x", {xmlns="test2"}):up()
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267
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268 s:remove_children("x");
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269 assert.falsy(s:get_child("x"))
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270 assert.truthy(s:get_child("z","test2"));
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271 assert.truthy(s:get_child("x","test2"));
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272
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273 s:remove_children(nil, "test2");
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274 assert.truthy(s:get_child("y"))
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275 assert.falsy(s:get_child(nil,"test2"));
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276
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277 s:remove_children();
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278 assert.falsy(s.tags[1]);
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parents: 8641
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279 end);
4d64ff0719a6 util.stanza: Brief tests for :remove_children
Kim Alvefur <zash@zash.se>
parents: 8641
diff changeset
280 end);
4d64ff0719a6 util.stanza: Brief tests for :remove_children
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281
9216
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
282 describe("#maptags", function ()
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parents: 9000
diff changeset
283 it("should work", function ()
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284 local s = st.stanza("test")
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285 :tag("one"):up()
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286 :tag("two"):up()
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287 :tag("one"):up()
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288 :tag("three"):up();
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289
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parents: 9000
diff changeset
290 local function one_filter(tag)
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diff changeset
291 if tag.name == "one" then
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parents: 9000
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292 return nil;
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diff changeset
293 end
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294 return tag;
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parents: 9000
diff changeset
295 end
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parents: 9000
diff changeset
296 assert.equal(4, #s.tags);
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parents: 9000
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297 s:maptags(one_filter);
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parents: 9000
diff changeset
298 assert.equal(2, #s.tags);
ba38a947020e util.stanza tests: Add tests for maptags() method
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parents: 9000
diff changeset
299 end);
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parents: 9000
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300
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Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
301 it("should work with multiple consecutive text nodes", function ()
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Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
302 local s = st.deserialize({
ba38a947020e util.stanza tests: Add tests for maptags() method
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303 "\n";
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parents: 9000
diff changeset
304 {
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parents: 9000
diff changeset
305 "away";
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parents: 9000
diff changeset
306 name = "show";
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parents: 9000
diff changeset
307 attr = {};
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
308 };
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
309 "\n";
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parents: 9000
diff changeset
310 {
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
311 "I am away";
ba38a947020e util.stanza tests: Add tests for maptags() method
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parents: 9000
diff changeset
312 name = "status";
ba38a947020e util.stanza tests: Add tests for maptags() method
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parents: 9000
diff changeset
313 attr = {};
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
314 };
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Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
315 "\n";
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parents: 9000
diff changeset
316 {
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diff changeset
317 "0";
ba38a947020e util.stanza tests: Add tests for maptags() method
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318 name = "priority";
ba38a947020e util.stanza tests: Add tests for maptags() method
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parents: 9000
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319 attr = {};
ba38a947020e util.stanza tests: Add tests for maptags() method
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parents: 9000
diff changeset
320 };
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
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diff changeset
321 "\n";
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Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
322 {
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
323 name = "c";
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
324 attr = {
ba38a947020e util.stanza tests: Add tests for maptags() method
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parents: 9000
diff changeset
325 xmlns = "http://jabber.org/protocol/caps";
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
326 node = "http://psi-im.org";
ba38a947020e util.stanza tests: Add tests for maptags() method
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parents: 9000
diff changeset
327 hash = "sha-1";
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
328 };
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
329 };
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
330 "\n";
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
331 "\n";
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
332 name = "presence";
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
333 attr = {
ba38a947020e util.stanza tests: Add tests for maptags() method
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parents: 9000
diff changeset
334 to = "user@example.com/jflsjfld";
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
335 from = "room@chat.example.org/nick";
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
336 };
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
337 });
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
338
ba38a947020e util.stanza tests: Add tests for maptags() method
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parents: 9000
diff changeset
339 assert.equal(4, #s.tags);
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
340
ba38a947020e util.stanza tests: Add tests for maptags() method
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parents: 9000
diff changeset
341 s:maptags(function (tag) return tag; end);
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parents: 9000
diff changeset
342 assert.equal(4, #s.tags);
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
343
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parents: 9000
diff changeset
344 s:maptags(function (tag)
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parents: 9000
diff changeset
345 if tag.name == "c" then
ba38a947020e util.stanza tests: Add tests for maptags() method
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parents: 9000
diff changeset
346 return nil;
ba38a947020e util.stanza tests: Add tests for maptags() method
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parents: 9000
diff changeset
347 end
ba38a947020e util.stanza tests: Add tests for maptags() method
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parents: 9000
diff changeset
348 return tag;
ba38a947020e util.stanza tests: Add tests for maptags() method
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parents: 9000
diff changeset
349 end);
ba38a947020e util.stanza tests: Add tests for maptags() method
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parents: 9000
diff changeset
350 assert.equal(3, #s.tags);
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
351 end);
9217
7df29c5fbb9b util.stanza + tests: Bail out of loop if we are iterating too far, fixes #981
Matthew Wild <mwild1@gmail.com>
parents: 9216
diff changeset
352 it("errors on invalid data - #981", function ()
7df29c5fbb9b util.stanza + tests: Bail out of loop if we are iterating too far, fixes #981
Matthew Wild <mwild1@gmail.com>
parents: 9216
diff changeset
353 local s = st.message({}, "Hello");
7df29c5fbb9b util.stanza + tests: Bail out of loop if we are iterating too far, fixes #981
Matthew Wild <mwild1@gmail.com>
parents: 9216
diff changeset
354 s.tags[1] = st.clone(s.tags[1]);
7df29c5fbb9b util.stanza + tests: Bail out of loop if we are iterating too far, fixes #981
Matthew Wild <mwild1@gmail.com>
parents: 9216
diff changeset
355 assert.has_error_match(function ()
7df29c5fbb9b util.stanza + tests: Bail out of loop if we are iterating too far, fixes #981
Matthew Wild <mwild1@gmail.com>
parents: 9216
diff changeset
356 s:maptags(function () end);
7df29c5fbb9b util.stanza + tests: Bail out of loop if we are iterating too far, fixes #981
Matthew Wild <mwild1@gmail.com>
parents: 9216
diff changeset
357 end, "Invalid stanza");
7df29c5fbb9b util.stanza + tests: Bail out of loop if we are iterating too far, fixes #981
Matthew Wild <mwild1@gmail.com>
parents: 9216
diff changeset
358 end);
9216
ba38a947020e util.stanza tests: Add tests for maptags() method
Matthew Wild <mwild1@gmail.com>
parents: 9000
diff changeset
359 end);
9630
bff66c3faceb util.stanza: Validate input to clone() (with brief tests)
Kim Alvefur <zash@zash.se>
parents: 9308
diff changeset
360
bff66c3faceb util.stanza: Validate input to clone() (with brief tests)
Kim Alvefur <zash@zash.se>
parents: 9308
diff changeset
361 describe("#clone", function ()
bff66c3faceb util.stanza: Validate input to clone() (with brief tests)
Kim Alvefur <zash@zash.se>
parents: 9308
diff changeset
362 it("works", function ()
bff66c3faceb util.stanza: Validate input to clone() (with brief tests)
Kim Alvefur <zash@zash.se>
parents: 9308
diff changeset
363 local s = st.message({type="chat"}, "Hello"):reset();
bff66c3faceb util.stanza: Validate input to clone() (with brief tests)
Kim Alvefur <zash@zash.se>
parents: 9308
diff changeset
364 local c = st.clone(s);
bff66c3faceb util.stanza: Validate input to clone() (with brief tests)
Kim Alvefur <zash@zash.se>
parents: 9308
diff changeset
365 assert.same(s, c);
bff66c3faceb util.stanza: Validate input to clone() (with brief tests)
Kim Alvefur <zash@zash.se>
parents: 9308
diff changeset
366 end);
bff66c3faceb util.stanza: Validate input to clone() (with brief tests)
Kim Alvefur <zash@zash.se>
parents: 9308
diff changeset
367
bff66c3faceb util.stanza: Validate input to clone() (with brief tests)
Kim Alvefur <zash@zash.se>
parents: 9308
diff changeset
368 it("works", function ()
bff66c3faceb util.stanza: Validate input to clone() (with brief tests)
Kim Alvefur <zash@zash.se>
parents: 9308
diff changeset
369 assert.has_error(function ()
bff66c3faceb util.stanza: Validate input to clone() (with brief tests)
Kim Alvefur <zash@zash.se>
parents: 9308
diff changeset
370 st.clone("this is not a stanza");
bff66c3faceb util.stanza: Validate input to clone() (with brief tests)
Kim Alvefur <zash@zash.se>
parents: 9308
diff changeset
371 end);
bff66c3faceb util.stanza: Validate input to clone() (with brief tests)
Kim Alvefur <zash@zash.se>
parents: 9308
diff changeset
372 end);
bff66c3faceb util.stanza: Validate input to clone() (with brief tests)
Kim Alvefur <zash@zash.se>
parents: 9308
diff changeset
373 end);
8236
4878e4159e12 Port tests to the `busted` test runner
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
374 end);