diff --git a/spec/suites/map/MapSpec.js b/spec/suites/map/MapSpec.js
index 3022234b4..874402bbe 100644
--- a/spec/suites/map/MapSpec.js
+++ b/spec/suites/map/MapSpec.js
@@ -2219,6 +2219,34 @@ describe('Map', () => {
 		});
 	});
 
+	describe('#project', () => {
+		const tolerance = 1 / 1000000;
+
+		it('returns pixel coordinates relative to the top-left of the CRS extents', () => {
+			map.setView([40, -83], 5);
+			const x = latLng([40, -83]);
+			const a = map.project(x, 5);
+			expect(a.x).to.be.approximately(2207.288888, tolerance);
+			expect(a.y).to.be.approximately(3101.320460, tolerance);
+		});
+
+		it('test the other coordinates', () => {
+			map.setView([40, 83], 5);
+			const x = latLng([40, 83]);
+			const b = map.project(x, 5);
+			expect(b.x).to.be.approximately(5984.7111111, tolerance);
+			expect(b.y).to.be.approximately(3101.3204602, tolerance);
+		});
+
+		it('test the prev coordinates with different zoom', () => {
+			map.setView([40, 83], 5);
+			const x = latLng([40, 83]);
+			const b = map.project(x, 6);
+			expect(b.x).to.be.approximately(11969.422222, tolerance);
+			expect(b.y).to.be.approximately(6202.640920, tolerance);
+		});
+	});
+
 	describe('#latLngToLayerPoint', () => {
 
 		it('throws if map is not set before', () => {