diff --git a/test/spec/ol/source/tilewmssource.test.js b/test/spec/ol/source/tilewmssource.test.js
new file mode 100644
index 0000000000..f27cee5b97
--- /dev/null
+++ b/test/spec/ol/source/tilewmssource.test.js
@@ -0,0 +1,113 @@
+goog.provide('ol.test.source.TileWMS');
+
+
+describe('ol.source.TileWMS', function() {
+
+  var options;
+  beforeEach(function() {
+    options = {
+      params: {
+        'LAYERS': 'layer'
+      },
+      url: 'http://example.com/wms'
+    };
+  });
+
+  describe('#getTile', function() {
+
+    it('returns a tile with the expected URL', function() {
+      var source = new ol.source.TileWMS(options);
+      var tile = source.getTile(3, 2, 1, ol.proj.get('EPSG:3857'));
+      expect(tile).to.be.an(ol.ImageTile);
+      var uri = new goog.Uri(tile.src_);
+      expect(uri.getScheme()).to.be('http');
+      expect(uri.getDomain()).to.be('example.com');
+      expect(uri.getPath()).to.be('/wms');
+      var queryData = uri.getQueryData();
+      expect(queryData.get('BBOX')).to.be(
+          '-10018754.171394622,-15028131.257091932,' +
+          '-5009377.085697311,-10018754.17139462');
+      expect(queryData.get('CRS')).to.be('EPSG:3857');
+      expect(queryData.get('FORMAT')).to.be('image/png');
+      expect(queryData.get('HEIGHT')).to.be('256');
+      expect(queryData.get('LAYERS')).to.be('layer');
+      expect(queryData.get('REQUEST')).to.be('GetMap');
+      expect(queryData.get('SERVICE')).to.be('WMS');
+      expect(queryData.get('SRS')).to.be(undefined);
+      expect(queryData.get('STYLES')).to.be('');
+      expect(queryData.get('TRANSPARENT')).to.be('true');
+      expect(queryData.get('VERSION')).to.be('1.3.0');
+      expect(queryData.get('WIDTH')).to.be('256');
+      expect(uri.getFragment()).to.be.empty();
+    });
+
+    it('returns a larger tile when a gutter is specified', function() {
+      options.gutter = 16;
+      var source = new ol.source.TileWMS(options);
+      var tile = source.getTile(3, 2, 1, ol.proj.get('EPSG:3857'));
+      expect(tile).to.be.an(ol.ImageTile);
+      var uri = new goog.Uri(tile.src_);
+      var queryData = uri.getQueryData();
+      expect(queryData.get('BBOX')).to.be(
+          '-10331840.239250705,-15341217.324948015,' +
+          '-4696291.017841229,-9705668.103538537');
+      expect(queryData.get('HEIGHT')).to.be('288');
+      expect(queryData.get('WIDTH')).to.be('288');
+    });
+
+    it('sets the SRS query value instead of CRS if version < 1.3', function() {
+      options.params.VERSION = '1.2';
+      var source = new ol.source.TileWMS(options);
+      var tile = source.getTile(3, 2, 1, ol.proj.get('EPSG:4326'));
+      var uri = new goog.Uri(tile.src_);
+      var queryData = uri.getQueryData();
+      expect(queryData.get('CRS')).to.be(undefined);
+      expect(queryData.get('SRS')).to.be('EPSG:4326');
+    });
+
+    it('allows various parameters to be overridden', function() {
+      options.params.FORMAT = 'image/jpeg';
+      options.params.TRANSPARENT = false;
+      var source = new ol.source.TileWMS(options);
+      var tile = source.getTile(3, 2, 1, ol.proj.get('EPSG:4326'));
+      var uri = new goog.Uri(tile.src_);
+      var queryData = uri.getQueryData();
+      expect(queryData.get('FORMAT')).to.be('image/jpeg');
+      expect(queryData.get('TRANSPARENT')).to.be('false');
+    });
+
+    it('does not add a STYLES= option if one is specified', function() {
+      options.params.STYLES = 'foo';
+      var source = new ol.source.TileWMS(options);
+      var tile = source.getTile(3, 2, 1, ol.proj.get('EPSG:4326'));
+      var uri = new goog.Uri(tile.src_);
+      var queryData = uri.getQueryData();
+      expect(queryData.get('STYLES')).to.be('foo');
+    });
+
+    it('changes the BBOX order for EN axis orientations', function() {
+      var source = new ol.source.TileWMS(options);
+      var tile = source.getTile(3, 2, 1, ol.proj.get('EPSG:4326'));
+      var uri = new goog.Uri(tile.src_);
+      var queryData = uri.getQueryData();
+      expect(queryData.get('BBOX')).to.be('-45,-90,0,-45');
+    });
+
+    it('uses EN BBOX order if version < 1.3', function() {
+      options.params.VERSION = '1.1.0';
+      var source = new ol.source.TileWMS(options);
+      var tile = source.getTile(3, 2, 1, ol.proj.get('CRS:84'));
+      var uri = new goog.Uri(tile.src_);
+      var queryData = uri.getQueryData();
+      expect(queryData.get('BBOX')).to.be('-90,-45,-45,0');
+    });
+
+  });
+
+});
+
+
+goog.require('goog.Uri');
+goog.require('ol.ImageTile');
+goog.require('ol.source.TileWMS');
+goog.require('ol.proj');