Add support for non-square tiles

test/spec/ol/size.test.js

@@ -0,0 +1,65 @@
+goog.provide('ol.test.size');
+
+
+describe('ol.size', function() {
+
+  describe('#buffer()', function() {
+
+    it('buffers a size', function() {
+      var size = [50, 75];
+      var bufferedSize = ol.size.buffer(size, 20);
+      expect(bufferedSize).to.eql([90, 115]);
+    });
+
+    it('reuses an existing array', function() {
+      var reuse = [0, 0];
+      var size = [50, 50];
+      var bufferedSize = ol.size.buffer(size, 20, reuse);
+      expect(bufferedSize).to.equal(reuse);
+    });
+
+  });
+
+  describe('#scale()', function() {
+
+    it('scales a size and rounds the result', function() {
+      var size = [50, 75];
+      var scaledSize = ol.size.scale(size, 1.75);
+      expect(scaledSize).to.eql([88, 131]);
+    });
+
+    it('reuses an existing array', function() {
+      var reuse = [0, 0];
+      var size = [50, 50];
+      var scaledSize = ol.size.scale(size, 1.75, reuse);
+      expect(scaledSize).to.equal(reuse);
+    });
+
+  });
+
+  describe('#toSize()', function() {
+
+    it('creates a size array from a number', function() {
+      var size = ol.size.toSize(512);
+      expect(size).to.eql([512, 512]);
+    });
+
+    it('reuses an existing array', function() {
+      var sizeArray = [0, 0];
+      var size = ol.size.toSize(512, sizeArray);
+      expect(size).to.equal(sizeArray);
+    });
+
+    it('returns a size array unaltered', function() {
+      var sizeArray = [512, 256];
+      var size = ol.size.toSize(sizeArray);
+      expect(size).to.equal(sizeArray);
+      size = ol.size.toSize(sizeArray, [0, 0]);
+      expect(size).to.equal(sizeArray);
+    });
+
+  });
+
+});
+
+goog.require('ol.size');