Do not stop keypress on escape if no popup is open

spec/index.html

@@ -92,6 +92,7 @@
 	<!-- /map/handler -->
 	<script src="suites/map/handler/Map.DragSpec.js"></script>
 	<script src="suites/map/handler/Map.TouchZoomSpec.js"></script>
+	<script src="suites/map/handler/Map.KeyboardSpec.js"></script>
 
 	<!-- /geo/crs -->
 	<script src="suites/geo/CRSSpec.js"></script>

spec/suites/map/handler/Map.KeyboardSpec.js

@@ -0,0 +1,121 @@
+describe("Map.Keyboard", function () {
+
+	var map, container;
+
+	beforeEach(function () {
+		container = document.createElement('div');
+		container.style.width = container.style.height = '600px';
+		container.style.top = container.style.left = 0;
+		container.style.position = 'absolute';
+		document.body.appendChild(container);
+		map = L.map(container, {
+			zoomAnimation: false	// If true, the test has to wait extra 250msec
+		});
+
+		map.setView([0, 0], 5);
+
+		// Keyboard functionality expects the map to be focused (clicked or cycle-tabbed)
+		// However this can only happen with trusted events (non-synthetic), so
+		// this bit has to be faked.
+		map.keyboard._onFocus();
+	});
+
+	afterEach(function () {
+		map.remove();
+		document.body.removeChild(container);
+	});
+
+	describe("cursor keys", function () {
+		it("move the map north", function (done) {
+
+			happen.keydown(document,  {keyCode: 38});	// 38 = cursor up
+			happen.keypress(document, {keyCode: 38});
+			happen.keyup(document,    {keyCode: 38});
+
+			setTimeout(function () {
+				expect(map.getCenter().lat).to.be.greaterThan(0);
+				done();
+			}, 300);
+		});
+
+		it("move the map south", function (done) {
+
+			happen.keydown(document,  {keyCode: 40});	// 40 = cursor down
+			happen.keypress(document, {keyCode: 40});
+			happen.keyup(document,    {keyCode: 40});
+
+			setTimeout(function () {
+				expect(map.getCenter().lat).to.be.lessThan(0);
+				done();
+			}, 300);
+		});
+
+		it("move the map west", function (done) {
+
+			happen.keydown(document,  {keyCode: 37});	// 37 = cursor left
+			happen.keypress(document, {keyCode: 37});
+			happen.keyup(document,    {keyCode: 37});
+
+			setTimeout(function () {
+				expect(map.getCenter().lng).to.be.lessThan(0);
+				done();
+			}, 300);
+		});
+
+		it("move the map east", function (done) {
+
+			happen.keydown(document,  {keyCode: 39});	// 39 = cursor right
+			happen.keypress(document, {keyCode: 39});
+			happen.keyup(document,    {keyCode: 39});
+
+			setTimeout(function () {
+				expect(map.getCenter().lng).to.be.greaterThan(0);
+				done();
+			}, 300);
+		});
+	});
+
+	describe("plus/minus keys", function () {
+		it("zoom in", function (done) {
+
+			happen.keydown(document,  {keyCode: 171});	// 171 = +
+			happen.keypress(document, {keyCode: 171});
+			happen.keyup(document,    {keyCode: 171});
+
+			setTimeout(function () {
+				expect(map.getZoom()).to.be.greaterThan(5);
+				done();
+			}, 300);
+		});
+
+		it("zoom out", function (done) {
+
+			happen.keydown(document,  {keyCode: 173});	// 173 = - (in firefox)
+			happen.keypress(document, {keyCode: 173});
+			happen.keyup(document,    {keyCode: 173});
+
+			setTimeout(function () {
+				expect(map.getZoom()).to.be.lessThan(5);
+				done();
+			}, 300);
+		});
+	});
+
+
+	describe("popup closing", function () {
+		it("closes a popup when pressing escape", function () {
+
+			var popup = L.popup().setLatLng([0, 0]).setContent('Null Island');
+			map.openPopup(popup);
+
+			expect(popup.isOpen()).to.be(true);
+
+			happen.keydown(document,  {keyCode: 27});	// 27 = Esc
+// 			happen.keypress(document, {keyCode: 27});
+			happen.keyup(document,    {keyCode: 27});
+
+			expect(popup.isOpen()).to.be(false);
+		});
+	});
+
+});

src/map/handler/Map.Keyboard.js

@@ -162,7 +162,7 @@ export var Keyboard = Handler.extend({
 		} else if (key in this._zoomKeys) {
 			map.setZoom(map.getZoom() + (e.shiftKey ? 3 : 1) * this._zoomKeys[key]);
 
-		} else if (key === 27) {
+		} else if (key === 27 && map._popup) {
 			map.closePopup();
 
 		} else {