Add test

test/acceptance/layergroupid-test.js

@@ -0,0 +1,66 @@
+'use strict';
+
+require('../support/test-helper');
+
+const assert = require('../support/assert');
+const TestClient = require('../support/test-client');
+const { parse: parseLayergroupToken } = require('../../lib/models/layergroup-token');
+
+describe('layergroup id', function () {
+    const suites = [
+        {
+            description: 'with empty layers should respond with cache buster equal to 0',
+            expectedCacheBuster: '0',
+            mapConfig: {
+                version: '1.8.0',
+                layers: []
+            }
+        },
+        {
+            description: 'with layer and dumb query (no affected tables) should respond with cache buster equal to 0',
+            expectedCacheBuster: '0',
+            mapConfig: {
+                version: '1.8.0',
+                layers: [{
+                    type: 'cartodb',
+                    options: {
+                        sql: TestClient.SQL.ONE_POINT
+                    }
+                }]
+            }
+        },
+        {
+            description: 'with layer and legit query should respond with cache buster',
+            expectedCacheBuster: '1234567890123',
+            mapConfig: {
+                version: '1.8.0',
+                layers: [{
+                    type: 'cartodb',
+                    options: {
+                        sql: 'SELECT * FROM test_table'
+                    }
+                }]
+            }
+        }
+    ];
+
+    suites.forEach(({ description, expectedCacheBuster, mapConfig }) => {
+        it(description, function (done) {
+            const testClient = new TestClient(mapConfig);
+
+            testClient.getLayergroup((err, body) => {
+                if (err) {
+                    return done(err);
+                }
+
+                const { layergroupid } = body;
+                assert.ok(typeof layergroupid === 'string');
+
+                const { cacheBuster } = parseLayergroupToken(layergroupid);
+                assert.strictEqual(cacheBuster, expectedCacheBuster);
+
+                testClient.drain(done);
+            });
+        });
+    });
+});