Organize tests

2021-04-27 15:41:14 -07:00
parent 278e355795
commit 490cfabe91
599 changed files with 12374 additions and 1603 deletions
@@ -0,0 +1,64 @@
+import {calculateSourceResolution} from '../../../../../src/ol/reproj.js';
+import {get as getProjection, transform} from '../../../../../src/ol/proj.js';
+
+describe('ol.reproj', function () {
+  describe('#calculateSourceResolution', function () {
+    const proj3857 = getProjection('EPSG:3857');
+    const proj4326 = getProjection('EPSG:4326');
+    const origin = [0, 0];
+    const point3857 = [50, 40];
+    const point4326 = transform(point3857, proj3857, proj4326);
+
+    it('is identity for identical projection', function () {
+      let result;
+      const resolution = 500;
+      result = calculateSourceResolution(
+        proj3857,
+        proj3857,
+        origin,
+        resolution
+      );
+      expect(result).to.be(resolution);
+
+      result = calculateSourceResolution(
+        proj3857,
+        proj3857,
+        point3857,
+        resolution
+      );
+      expect(result).to.be(resolution);
+
+      result = calculateSourceResolution(
+        proj4326,
+        proj4326,
+        point4326,
+        resolution
+      );
+      expect(result).to.be(resolution);
+    });
+
+    it('calculates correctly', function () {
+      const resolution4326 = 5;
+
+      const resolution3857 = calculateSourceResolution(
+        proj3857,
+        proj4326,
+        point4326,
+        resolution4326
+      );
+      expect(resolution3857).not.to.be(resolution4326);
+      expect(resolution3857).to.roughlyEqual(
+        5 * proj4326.getMetersPerUnit(),
+        1e-4
+      );
+
+      const result = calculateSourceResolution(
+        proj4326,
+        proj3857,
+        point3857,
+        resolution3857
+      );
+      expect(result).to.be(resolution4326);
+    });
+  });
+});