Added custom params to printed wms layers (#1259)

* Fixes #1258: added custom params to printed wms layers

* Added unit test

web/client/utils/PrintUtils.js

@@ -110,7 +110,7 @@ const PrintUtils = {
                    "TILED": true,
                    "EXCEPTIONS": "application/vnd.ogc.se_inimage",
                    "scaleMethod": "accurate"
-               }, layer.baseParams || {})
+               }, layer.baseParams || {}, layer.params || {})
             }),
             legend: (layer, spec) => ({
                 "name": layer.title || layer.name,

web/client/utils/__tests__/PrintUtils-test.js

@@ -0,0 +1,29 @@
+/**
+ * Copyright 2016, GeoSolutions Sas.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+const expect = require('expect');
+const PrintUtils = require('../PrintUtils');
+
+const layer = {
+    url: "http://mygeoserver",
+    name: "my:layer",
+    type: "wms",
+    params: {myparam: "myvalue"}
+};
+
+
+describe('PrintUtils', () => {
+
+    it('custom params are applied to wms layers', () => {
+
+        const specs = PrintUtils.getMapfishLayersSpecification([layer], {}, 'map');
+        expect(specs).toExist();
+        expect(specs.length).toBe(1);
+        expect(specs[0].customParams.myparam).toExist();
+        expect(specs[0].customParams.myparam).toBe("myvalue");
+    });
+});