From 79c6787e52a1f26787d4c438691bf56dfe12d8bf Mon Sep 17 00:00:00 2001
From: Tom Payne <twpayne@gmail.com>
Date: Wed, 4 Dec 2013 14:59:30 +0100
Subject: [PATCH] Add ol.source.Vector#clear

---
 src/ol/source/vectorsource.js            | 10 ++++++++++
 test/spec/ol/source/vectorsource.test.js | 18 ++++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/src/ol/source/vectorsource.js b/src/ol/source/vectorsource.js
index 0503486648..cf8ca377ae 100644
--- a/src/ol/source/vectorsource.js
+++ b/src/ol/source/vectorsource.js
@@ -81,6 +81,16 @@ ol.source.Vector.prototype.addFeature = function(feature) {
 };
 
 
+/**
+ * FIXME empty description for jsdoc
+ */
+ol.source.Vector.prototype.clear = function() {
+  this.rBush_.forEach(this.removeFeatureInternal_, this);
+  this.rBush_.clear();
+  this.dispatchChangeEvent();
+};
+
+
 /**
  * @param {function(this: T, ol.Feature): S} f Callback.
  * @param {T=} opt_obj The object to be used as the value of 'this' within f.
diff --git a/test/spec/ol/source/vectorsource.test.js b/test/spec/ol/source/vectorsource.test.js
index ba7268a1ec..5e27f48de5 100644
--- a/test/spec/ol/source/vectorsource.test.js
+++ b/test/spec/ol/source/vectorsource.test.js
@@ -82,6 +82,24 @@ describe('ol.source.Vector', function() {
       });
     });
 
+    describe('#clear', function() {
+
+      it('removes all features', function() {
+        var changeSpy = sinon.spy();
+        goog.events.listen(vectorSource, 'change', changeSpy);
+        var removeFeatureSpy = sinon.spy();
+        goog.events.listen(vectorSource, 'removefeature', removeFeatureSpy);
+        vectorSource.clear();
+        expect(vectorSource.getAllFeatures()).to.eql([]);
+        expect(vectorSource.isEmpty()).to.be(true);
+        expect(changeSpy).to.be.called();
+        expect(changeSpy.callCount).to.be(1);
+        expect(removeFeatureSpy).to.be.called();
+        expect(removeFeatureSpy.callCount).to.be(10);
+      });
+
+    });
+
     describe('#forEachFeatureInExtent', function() {
 
       it('is called the expected number of times', function() {