tests(*): fix azure plugin test due to mockbin sunset

spec/03-plugins/35-azure-functions/01-access_spec.lua

@@ -1,13 +1,50 @@
 local helpers = require "spec.helpers"
 local meta = require "kong.meta"
 
+local http_mock = require "spec.helpers.http_mock"
 
 local server_tokens = meta._SERVER_TOKENS
 
 
 for _, strategy in helpers.each_strategy() do
-  describe("#flaky Plugin: Azure Functions (access) [#" .. strategy .. "]", function()
+  describe("Plugin: Azure Functions (access) [#" .. strategy .. "]", function()
+    local mock
     local proxy_client
+    local mock_http_server_port = helpers.get_available_port()
+
+    mock = http_mock.new("127.0.0.1:" .. mock_http_server_port, {
+      ["/"] = {
+        access = [[
+          local json = require "cjson"
+          local method = ngx.req.get_method()
+          local uri = ngx.var.request_uri
+          local headers = ngx.req.get_headers(nil, true)
+          local query_args = ngx.req.get_uri_args()
+          ngx.req.read_body()
+          local body
+          -- collect body
+          body = ngx.req.get_body_data()
+          if not body then
+            local file = ngx.req.get_body_file()
+            if file then
+              local f = io.open(file, "r")
+              if f then
+                body = f:read("*a")
+                f:close()
+              end
+            end
+          end
+          ngx.say(json.encode({
+            query_args = query_args,
+            uri = uri,
+            method = method,
+            headers = headers,
+            body = body,
+            status = 200,
+          }))
+        ]]
+      },
+    })
 
     setup(function()
       local _, db = helpers.get_db_utils(strategy, {
@@ -21,14 +58,37 @@ for _, strategy in helpers.each_strategy() do
         protocols  = { "http", "https" },
       }
 
+      -- Mocking lua-resty-http's request_uri function
+      db.plugins:insert {
+        name = "pre-function",
+        route = { id = route2.id },
+        config = {
+          access = {
+            [[
+              local http = require "resty.http"
+              local json = require "cjson"
+              local _request_uri = http.request_uri
+              http.request_uri = function (self, uri, params)
+                local scheme, host, port, _, _ = unpack(http:parse_uri(uri))
+                local mock_server_port = ]] .. mock_http_server_port .. [[
+                -- Replace the port with the mock server port
+                local new_uri = string.format("%s://%s:%d", scheme, host, mock_server_port)
+                ngx.log(ngx.ERR, "REPLACE URI WITH:" .. new_uri)
+                return _request_uri(self, new_uri, params)
+              end
+            ]]
+          }
+        }
+      }
+
       -- this plugin definition results in an upstream url to
       -- http://mockbin.org/request
       -- which will echo the request for inspection
       db.plugins:insert {
         name     = "azure-functions",
         route    = { id = route2.id },
         config   = {
-          https           = true,
+          https           = false,
           appname         = "mockbin",
           hostdomain      = "org",
           routeprefix     = "request",
@@ -38,11 +98,22 @@ for _, strategy in helpers.each_strategy() do
         },
       }
 
-      assert(helpers.start_kong{
-        database = strategy,
-        plugins  = "azure-functions",
+      local fixtures = {
+        dns_mock = helpers.dns_mock.new()
+      }
+
+      fixtures.dns_mock:A({
+        name = "mockbin.org",
+        address = "127.0.0.1",
       })
 
+      assert(helpers.start_kong({
+        database = strategy,
+        untrusted_lua = "on",
+        plugins  = "azure-functions,pre-function",
+      }, nil, nil, fixtures))
+
+      assert(mock:start())
     end) -- setup
 
     before_each(function()
@@ -55,6 +126,7 @@ for _, strategy in helpers.each_strategy() do
 
     teardown(function()
       helpers.stop_kong()
+      assert(mock:stop())
     end)
 
 
@@ -70,7 +142,7 @@ for _, strategy in helpers.each_strategy() do
 
       assert.response(res).has.status(200)
       local json = assert.response(res).has.jsonbody()
-      assert.same({ hello ="world" }, json.queryString)
+      assert.same({ hello ="world" }, json.query_args)
     end)
 
     it("passes request body", function()
@@ -87,7 +159,7 @@ for _, strategy in helpers.each_strategy() do
 
       assert.response(res).has.status(200)
       local json = assert.response(res).has.jsonbody()
-      assert.same(body, json.postData.text)
+      assert.same(body, json.body)
     end)
 
     it("passes the path parameters", function()
@@ -101,7 +173,7 @@ for _, strategy in helpers.each_strategy() do
 
       assert.response(res).has.status(200)
       local json = assert.response(res).has.jsonbody()
-      assert.matches("mockbin.org/request/test%-func%-name/and/then/some", json.url)
+      assert.matches("/request/test%-func%-name/and/then/some", json.uri)
     end)
 
     it("passes the method", function()