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spec/util_events_spec.lua @ 11942:b4f77a7bf8ab
mod_http_openmetrics: Serve HTTP from global context
Makes GET /metrics work regardless of the value of the Host header.
This was not possible before 220468f7a103 which added the ability to
have global HTTP modules, which was partly why the per-host part was
kept while the module lived among the community modules.
Another reason was to provide some semblance of security by obscurity by
only loading the module on e.g. a 'localhost' VirtualHost or Component.
The new IP limits obsoletes this.
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Thu, 25 Nov 2021 16:57:01 +0100 |
| parent | 11060:19dd9522f107 |
| rev | line source |
|---|---|
| 8760 | 1 local events = require "util.events"; |
| 2 | |
| 3 describe("util.events", function () | |
| 4 it("should export a new() function", function () | |
| 5 assert.is_function(events.new); | |
| 6 end); | |
| 7 describe("new()", function () | |
| 8 it("should return return a new events object", function () | |
| 9 local e = events.new(); | |
| 10 assert.is_function(e.add_handler); | |
| 11 assert.is_function(e.remove_handler); | |
| 12 end); | |
| 13 end); | |
| 14 | |
| 15 local e, h; | |
| 16 | |
| 17 | |
| 18 describe("API", function () | |
| 19 before_each(function () | |
| 20 e = events.new(); | |
| 21 h = spy.new(function () end); | |
| 22 end); | |
| 23 | |
| 24 it("should call handlers when an event is fired", function () | |
| 25 e.add_handler("myevent", h); | |
| 26 e.fire_event("myevent"); | |
| 27 assert.spy(h).was_called(); | |
| 28 end); | |
| 29 | |
| 30 it("should not call handlers when a different event is fired", function () | |
| 31 e.add_handler("myevent", h); | |
| 32 e.fire_event("notmyevent"); | |
| 33 assert.spy(h).was_not_called(); | |
| 34 end); | |
| 35 | |
| 36 it("should pass the data argument to handlers", function () | |
| 37 e.add_handler("myevent", h); | |
| 38 e.fire_event("myevent", "mydata"); | |
| 39 assert.spy(h).was_called_with("mydata"); | |
| 40 end); | |
| 41 | |
| 42 it("should support non-string events", function () | |
| 43 local myevent = {}; | |
| 44 e.add_handler(myevent, h); | |
| 45 e.fire_event(myevent, "mydata"); | |
| 46 assert.spy(h).was_called_with("mydata"); | |
| 47 end); | |
| 48 | |
| 49 it("should call handlers in priority order", function () | |
| 50 local data = {}; | |
| 51 e.add_handler("myevent", function () table.insert(data, "h1"); end, 5); | |
| 52 e.add_handler("myevent", function () table.insert(data, "h2"); end, 3); | |
| 53 e.add_handler("myevent", function () table.insert(data, "h3"); end); | |
| 54 e.fire_event("myevent", "mydata"); | |
| 55 assert.same(data, { "h1", "h2", "h3" }); | |
| 56 end); | |
| 57 | |
| 58 it("should support non-integer priority values", function () | |
| 59 local data = {}; | |
| 60 e.add_handler("myevent", function () table.insert(data, "h1"); end, 1); | |
| 61 e.add_handler("myevent", function () table.insert(data, "h2"); end, 0.5); | |
| 62 e.add_handler("myevent", function () table.insert(data, "h3"); end, 0.25); | |
| 63 e.fire_event("myevent", "mydata"); | |
| 64 assert.same(data, { "h1", "h2", "h3" }); | |
| 65 end); | |
| 66 | |
| 67 it("should support negative priority values", function () | |
| 68 local data = {}; | |
| 69 e.add_handler("myevent", function () table.insert(data, "h1"); end, 1); | |
| 70 e.add_handler("myevent", function () table.insert(data, "h2"); end, 0); | |
| 71 e.add_handler("myevent", function () table.insert(data, "h3"); end, -1); | |
| 72 e.fire_event("myevent", "mydata"); | |
| 73 assert.same(data, { "h1", "h2", "h3" }); | |
| 74 end); | |
| 75 | |
| 76 it("should support removing handlers", function () | |
| 77 e.add_handler("myevent", h); | |
| 78 e.fire_event("myevent"); | |
| 79 e.remove_handler("myevent", h); | |
| 80 e.fire_event("myevent"); | |
| 81 assert.spy(h).was_called(1); | |
| 82 end); | |
| 83 | |
| 84 it("should support adding multiple handlers at the same time", function () | |
| 85 local ht = { | |
| 86 myevent1 = spy.new(function () end); | |
| 87 myevent2 = spy.new(function () end); | |
| 88 myevent3 = spy.new(function () end); | |
| 89 }; | |
| 90 e.add_handlers(ht); | |
| 91 e.fire_event("myevent1"); | |
| 92 e.fire_event("myevent2"); | |
| 93 assert.spy(ht.myevent1).was_called(); | |
| 94 assert.spy(ht.myevent2).was_called(); | |
| 95 assert.spy(ht.myevent3).was_not_called(); | |
| 96 end); | |
| 97 | |
| 98 it("should support removing multiple handlers at the same time", function () | |
| 99 local ht = { | |
| 100 myevent1 = spy.new(function () end); | |
| 101 myevent2 = spy.new(function () end); | |
| 102 myevent3 = spy.new(function () end); | |
| 103 }; | |
| 104 e.add_handlers(ht); | |
| 105 e.remove_handlers(ht); | |
| 106 e.fire_event("myevent1"); | |
| 107 e.fire_event("myevent2"); | |
| 108 assert.spy(ht.myevent1).was_not_called(); | |
| 109 assert.spy(ht.myevent2).was_not_called(); | |
| 110 assert.spy(ht.myevent3).was_not_called(); | |
| 111 end); | |
| 112 | |
| 113 pending("should support adding handlers within an event handler") | |
| 114 pending("should support removing handlers within an event handler") | |
| 115 | |
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116 it("should support getting the current handlers for an event", function () |
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117 e.add_handler("myevent", h); |
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118 local handlers = e.get_handlers("myevent"); |
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119 assert.equal(h, handlers[1]); |
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120 end); |
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121 |
| 8760 | 122 describe("wrappers", function () |
| 123 local w | |
| 124 before_each(function () | |
| 125 w = spy.new(function (handlers, event_name, event_data) | |
| 126 assert.is_function(handlers); | |
| 127 assert.equal("myevent", event_name) | |
| 128 assert.equal("abc", event_data); | |
| 129 return handlers(event_name, event_data); | |
| 130 end); | |
| 131 end); | |
| 132 | |
| 133 it("should get called", function () | |
| 134 e.add_wrapper("myevent", w); | |
| 135 e.add_handler("myevent", h); | |
| 136 e.fire_event("myevent", "abc"); | |
| 137 assert.spy(w).was_called(1); | |
| 138 assert.spy(h).was_called(1); | |
| 139 end); | |
| 140 | |
| 141 it("should be removable", function () | |
| 142 e.add_wrapper("myevent", w); | |
| 143 e.add_handler("myevent", h); | |
| 144 e.fire_event("myevent", "abc"); | |
| 145 e.remove_wrapper("myevent", w); | |
| 146 e.fire_event("myevent", "abc"); | |
| 147 assert.spy(w).was_called(1); | |
| 148 assert.spy(h).was_called(2); | |
| 149 end); | |
| 150 | |
| 151 it("should allow multiple wrappers", function () | |
| 152 local w2 = spy.new(function (handlers, event_name, event_data) | |
| 153 return handlers(event_name, event_data); | |
| 154 end); | |
| 155 e.add_wrapper("myevent", w); | |
| 156 e.add_handler("myevent", h); | |
| 157 e.add_wrapper("myevent", w2); | |
| 158 e.fire_event("myevent", "abc"); | |
| 159 e.remove_wrapper("myevent", w); | |
| 160 e.fire_event("myevent", "abc"); | |
| 161 assert.spy(w).was_called(1); | |
| 162 assert.spy(w2).was_called(2); | |
| 163 assert.spy(h).was_called(2); | |
| 164 end); | |
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165 |
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166 it("should support a mix of global and event wrappers", function () |
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167 local w2 = spy.new(function (handlers, event_name, event_data) |
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168 return handlers(event_name, event_data); |
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169 end); |
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170 e.add_wrapper(false, w); |
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171 e.add_handler("myevent", h); |
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172 e.add_wrapper("myevent", w2); |
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173 e.fire_event("myevent", "abc"); |
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174 e.remove_wrapper(false, w); |
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175 e.fire_event("myevent", "abc"); |
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176 assert.spy(w).was_called(1); |
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177 assert.spy(w2).was_called(2); |
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178 assert.spy(h).was_called(2); |
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179 end); |
| 8760 | 180 end); |
| 181 | |
| 182 describe("global wrappers", function () | |
| 183 local w | |
| 184 before_each(function () | |
| 185 w = spy.new(function (handlers, event_name, event_data) | |
| 186 assert.is_function(handlers); | |
| 187 assert.equal("myevent", event_name) | |
| 188 assert.equal("abc", event_data); | |
| 189 return handlers(event_name, event_data); | |
| 190 end); | |
| 191 end); | |
| 192 | |
| 193 it("should get called", function () | |
| 194 e.add_wrapper(false, w); | |
| 195 e.add_handler("myevent", h); | |
| 196 e.fire_event("myevent", "abc"); | |
| 197 assert.spy(w).was_called(1); | |
| 198 assert.spy(h).was_called(1); | |
| 199 end); | |
| 200 | |
| 201 it("should be removable", function () | |
| 202 e.add_wrapper(false, w); | |
| 203 e.add_handler("myevent", h); | |
| 204 e.fire_event("myevent", "abc"); | |
| 205 e.remove_wrapper(false, w); | |
| 206 e.fire_event("myevent", "abc"); | |
| 207 assert.spy(w).was_called(1); | |
| 208 assert.spy(h).was_called(2); | |
| 209 end); | |
| 210 end); | |
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211 |
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212 describe("debug hooks", function () |
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213 it("should get called", function () |
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214 local d = spy.new(function (handler, event_name, event_data) --luacheck: ignore 212/event_name |
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215 return handler(event_data); |
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216 end); |
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217 |
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218 e.add_handler("myevent", h); |
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219 e.fire_event("myevent"); |
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220 |
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221 assert.spy(h).was_called(1); |
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222 assert.spy(d).was_called(0); |
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223 |
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224 assert.is_nil(e.set_debug_hook(d)); |
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225 |
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226 e.fire_event("myevent", { mydata = true }); |
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227 |
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228 assert.spy(h).was_called(2); |
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229 assert.spy(d).was_called(1); |
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230 assert.spy(d).was_called_with(h, "myevent", { mydata = true }); |
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231 |
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232 assert.equal(d, e.set_debug_hook(nil)); |
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233 |
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234 e.fire_event("myevent", { mydata = false }); |
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235 |
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236 assert.spy(h).was_called(3); |
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237 assert.spy(d).was_called(1); |
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238 end); |
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239 it("setting should return any existing debug hook", function () |
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240 local function f() end |
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241 local function g() end |
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242 assert.is_nil(e.set_debug_hook(f)); |
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243 assert.is_equal(f, e.set_debug_hook(g)); |
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244 assert.is_equal(g, e.set_debug_hook(f)); |
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245 assert.is_equal(f, e.set_debug_hook(nil)); |
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246 assert.is_nil(e.set_debug_hook(f)); |
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247 end); |
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248 end); |
| 8760 | 249 end); |
| 250 end); |
