rate limit tests structure

test/unit/cartodb/rate-limit.test.js

@@ -0,0 +1,66 @@
+const assert = require('assert');
+const redis = require('redis');
+const RedisPool = require('redis-mpool');
+const cartodbRedis = require('cartodb-redis');
+const rateLimitMiddleware =  require('../../../lib/cartodb/middleware/rate-limit');
+
+let redisClient;
+const user = 'cdb';
+const endpointGroup = 'tile';
+let keysToDelete = []
+
+function setLimit(count, period, burst) {
+    redisClient.SELECT(8, function(err) {
+        if (err) {
+            return;
+        }
+
+        const key = 'rate-limit:store:' + user + ':' + endpointGroup;
+        redisClient.hset(key, 'b', burst, 'c', count, 'p', period, function() {
+            keysToDelete.push(key);
+        });
+    });
+}
+
+describe.only('rate-limit', function() {
+    before(function() {
+        const redisPool = new RedisPool(global.environment.redis);
+        const metadataBackend = cartodbRedis({pool: redisPool});
+        this.rateLimit = rateLimitMiddleware(metadataBackend);
+        
+        redisClient = redis.createClient(global.environment.redis.port);
+    });
+
+    after(function() {
+        keysToDelete.forEach( key => {
+            redisClient.del(key);
+        });
+    });
+    
+    it("should works", function(done) {
+        const count = 1;
+        const period = 1;
+        const burst = 1;
+        setLimit(count, period, burst);
+
+        const req = {};
+        const res = {
+            headers: {},
+            set(headers) {
+                this.headers = headers;
+            }
+        };
+
+        this.rateLimit(req, res, function(err) {
+            assert.ok(!err, err);
+            assert.deepEqual(res.headers, {
+                "X-Rate-Limit-Limit": burst + 1,
+                "X-Rate-Limit-Remaining": burst,
+                "X-Rate-Limit-Reset": period,
+                "X-Rate-Limit-Retry-After": -1              
+            });
+
+            done();
+        })
+    })
+})