From 6910c471bf5467d43b717a5ea223e1a19d3a35e0 Mon Sep 17 00:00:00 2001
From: Frederic Junod <frederic.junod@camptocamp.com>
Date: Mon, 4 Jul 2016 16:46:34 +0200
Subject: [PATCH] Add unit tests for ol.View.createCenterConstraint

---
 test/spec/ol/view.test.js | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/test/spec/ol/view.test.js b/test/spec/ol/view.test.js
index b891b293aa..b7bfbe1158 100644
--- a/test/spec/ol/view.test.js
+++ b/test/spec/ol/view.test.js
@@ -21,6 +21,32 @@ describe('ol.View', function() {
 
   describe('create constraints', function() {
 
+    describe('create center constraint', function() {
+
+      describe('with no options', function() {
+        it('gives a correct center constraint function', function() {
+          var options = {};
+          var fn = ol.View.createCenterConstraint_(options);
+          expect(fn([0, 0])).to.eql([0, 0]);
+          expect(fn(undefined)).to.eql(undefined);
+          expect(fn([42, -100])).to.eql([42, -100]);
+        });
+      });
+
+      describe('with extent option', function() {
+        it('gives a correct center constraint function', function() {
+          var options = {
+            extent: [0, 0, 1, 1]
+          };
+          var fn = ol.View.createCenterConstraint_(options);
+          expect(fn([0, 0])).to.eql([0, 0]);
+          expect(fn([-10, 0])).to.eql([0, 0]);
+          expect(fn([100, 100])).to.eql([1, 1]);
+        });
+      });
+
+    });
+
     describe('create resolution constraint', function() {
 
       describe('with no options', function() {