Use a blackish default for filling texts

test/spec/ol/style/textstyle.test.js

@@ -0,0 +1,31 @@
+goog.provide('ol.test.style.Text');
+
+
+describe('ol.style.Text', function() {
+
+  describe('#constructor', function() {
+
+    it('uses a default fill style if none passed', function() {
+      var style = new ol.style.Text();
+      expect(style.getFill().getColor()).to.be('#333');
+    });
+
+    it('uses a provided fill style if one passed', function() {
+      var style = new ol.style.Text({
+        fill: new ol.style.Fill({color: '#123456'})
+      });
+      expect(style.getFill().getColor()).to.be('#123456');
+    });
+
+    it('can always be resetted to no color', function() {
+      var style = new ol.style.Text();
+      style.getFill().setColor();
+      expect(style.getFill().getColor()).to.be(undefined);
+    });
+
+  });
+
+});
+
+goog.require('ol.style.Fill');
+goog.require('ol.style.Text');