Use minZoom and maxZoom olx.source.StamenOptions

test/spec/ol/source/stamensource.test.js

@@ -0,0 +1,28 @@
+goog.provide('ol.test.source.Stamen');
+
+describe('ol.source.Stamen', function() {
+
+  describe('constructor', function() {
+
+    it('can be constructed with a custom minZoom', function() {
+      var source = new ol.source.Stamen({
+        layer: 'watercolor',
+        minZoom: 10
+      });
+      expect(source.getTileGrid().getMinZoom()).to.be(10);
+    });
+
+    it('can be constructed with a custom maxZoom', function() {
+      var source = new ol.source.Stamen({
+        layer: 'watercolor',
+        maxZoom: 8
+      });
+      expect(source.getTileGrid().getMaxZoom()).to.be(8);
+
+    });
+
+  });
+
+});
+
+goog.require('ol.source.Stamen');