Ports tile stats tests from windshaft

test/unit/cartodb/ported/tile_stats.test.js

@@ -0,0 +1,81 @@
+require('../../../support/test_helper.js');
+
+var assert = require('assert');
+var cartodbServer = require('../../../../lib/cartodb/server');
+var serverOptions = require('../../../../lib/cartodb/server_options');
+var StatsClient = require('windshaft').stats.Client;
+
+var MapController = require('../../../../lib/cartodb/controllers/map');
+
+describe('tile stats', function() {
+
+    var statsClientGetInstanceFn = StatsClient.getInstance;
+
+    after(function() {
+        StatsClient.getInstance = statsClientGetInstanceFn;
+    });
+
+
+    it('finalizeGetTileOrGrid does not call statsClient when format is not supported', function() {
+        var expectedCalls = 2, // it will call increment once for the general error
+            invalidFormat = 'png2',
+            invalidFormatRegexp = new RegExp('invalid'),
+            formatMatched = false;
+        mockStatsClientGetInstance({
+            increment: function(label) {
+                formatMatched = formatMatched || !!label.match(invalidFormatRegexp);
+                expectedCalls--;
+            }
+        });
+
+        var ws = cartodbServer(serverOptions);
+        ws.sendError = function(){};
+
+        var mapController = new MapController(ws, null);
+
+        var reqMock = {
+            params: {
+                format: invalidFormat
+            }
+        };
+        mapController.finalizeGetTileOrGrid('Unsupported format png2', reqMock, {}, null, null);
+
+        assert.ok(formatMatched, 'Format was never matched in increment method');
+        assert.equal(expectedCalls, 0, 'Unexpected number of calls to increment method');
+    });
+
+    it('finalizeGetTileOrGrid calls statsClient when format is supported', function() {
+        var expectedCalls = 2, // general error + format error
+            validFormat = 'png',
+            validFormatRegexp = new RegExp(validFormat),
+            formatMatched = false;
+        mockStatsClientGetInstance({
+            increment: function(label) {
+                formatMatched = formatMatched || !!label.match(validFormatRegexp);
+                expectedCalls--;
+            }
+        });
+        var reqMock = {
+            params: {
+                format: validFormat
+            }
+        };
+
+        var ws = cartodbServer(serverOptions);
+        ws.sendError = function(){};
+
+        var mapController = new MapController(ws, null);
+
+        mapController.finalizeGetTileOrGrid('Another error happened', reqMock, {}, null, null);
+
+        assert.ok(formatMatched, 'Format was never matched in increment method');
+        assert.equal(expectedCalls, 0, 'Unexpected number of calls to increment method');
+    });
+
+    function mockStatsClientGetInstance(instance) {
+        StatsClient.getInstance = function() {
+            return instance;
+        };
+    }
+
+});