Add basic tests for ol.geom.flat.center

test/spec/ol/geom/flat/centerflatgeom.test.js

@@ -0,0 +1,57 @@
+goog.provide('ol.test.geom.flat.center');
+
+describe('ol.geom.flat.center', function() {
+
+  describe('ol.geom.flat.center.linearRingss', function() {
+
+    it('calculates the center of a square', function() {
+      var squareMultiPoly = new ol.geom.MultiPolygon([[
+        [[0, 0], [0, 1], [1, 1], [1, 0], [0, 0]]
+      ]]);
+      var got = ol.geom.flat.center.linearRingss(
+        squareMultiPoly.flatCoordinates,
+        0,
+        squareMultiPoly.endss_,
+        2
+      );
+      expect(got).to.eql([0.5, 0.5]);
+    });
+
+    it('calculates the centers of two squares', function() {
+      var squareMultiPoly = new ol.geom.MultiPolygon([
+          [
+            [[0, 0], [0, 1], [1, 1], [1, 0], [0, 0]]
+          ],
+          [
+            [[3, 0], [3, 1], [4, 1], [4, 0], [3, 0]]
+          ]
+      ]);
+      var got = ol.geom.flat.center.linearRingss(
+        squareMultiPoly.flatCoordinates,
+        0,
+        squareMultiPoly.endss_,
+        2
+      );
+      expect(got).to.eql([0.5, 0.5, 3.5, 0.5]);
+    });
+
+    it('does not care about holes', function() {
+      var polywithHole = new ol.geom.MultiPolygon([[
+          [[0, 0], [0, 5], [5, 5], [5, 0], [0, 0]],
+          [[1, 1], [1, 4], [4, 4], [4, 1], [1, 1]]
+      ]]);
+      var got = ol.geom.flat.center.linearRingss(
+        polywithHole.flatCoordinates,
+        0,
+        polywithHole.endss_,
+        2
+      );
+      expect(got).to.eql([2.5, 2.5]);
+    });
+
+  });
+
+});
+
+goog.require('ol.geom.flat.center');
+goog.require('ol.geom.MultiPolygon');