diff --git a/test/unit/cartodb/backends/turbo-carto-postgres-datasource.js b/test/unit/cartodb/backends/turbo-carto-postgres-datasource.js
new file mode 100644
index 00000000..8276bf25
--- /dev/null
+++ b/test/unit/cartodb/backends/turbo-carto-postgres-datasource.js
@@ -0,0 +1,46 @@
+var PostgresDatasource = require('../../../../lib/cartodb/backends/turbo-carto-postgres-datasource');
+var PSQL = require('cartodb-psql');
+var _ = require('underscore');
+var assert = require('assert');
+
+describe('turbo-carto-postgres-datasource', function() {
+
+    beforeEach(function () {
+        const dbname = _.template(global.environment.postgres_auth_user, { user_id: 1 }) + '_db';
+        const dbuser = _.template(global.environment.postgres_auth_user, { user_id: 1 })
+        const pass = _.template(global.environment.postgres_auth_pass, { user_id: 1 })
+        const psql = new PSQL({
+            user: 'postgres',
+            dbname: dbname,
+            host: global.environment.postgres.host,
+            port: global.environment.postgres.port
+        });
+        const sql =  [
+            'SELECT',
+            '  null::geometry the_geom_webmercator,',
+            '  CASE',
+            '    WHEN x % 4 = 0 THEN \'infinity\'::float',
+            '    WHEN x % 4 = 1 THEN \'-infinity\'::float',
+            '    WHEN x % 4 = 2 THEN \'NaN\'::float',
+            '    ELSE x',
+            '  END AS values',
+            'FROM generate_series(1, 1000) x'
+        ].join('\n')
+        this.datasource = new PostgresDatasource(psql, sql);
+    });
+
+    it('should ignore NaNs and Infinities when computing ramps', function(done) {
+       column = 'values';
+       buckets = 4;
+       method = 'equal';
+       this.datasource.getRamp(column, buckets, method, function(err, result) {
+           expected_result = {
+               ramp: [ 252, 501, 750, 999 ],
+               stats: { min_val: 3, max_val: 999, avg_val: 501 },
+               strategy: undefined
+            };
+           assert.deepEqual(result, expected_result);
+           done();
+       });
+    });
+});