feat(core events): Add dragstart and dragend event factories.

Author: thet

src/core/events.js

@@ -192,6 +192,20 @@ const submit_event = () => {
     });
 };
 
+const dragstart_event = () => {
+    return new Event("dragstart", {
+        bubbles: true,
+        cancelable: true,
+    });
+};
+
+const dragend_event = () => {
+    return new Event("dragend", {
+        bubbles: true,
+        cancelable: true,
+    });
+};
+
 export default {
     add_event_listener: add_event_listener,
     remove_event_listener: remove_event_listener,
@@ -206,4 +220,6 @@ export default {
     mouseup_event: mouseup_event,
     scroll_event: scroll_event,
     submit_event: submit_event,
+    dragstart_event: dragstart_event,
+    dragend_event: dragend_event,
 };

src/core/events.test.js

@@ -254,6 +254,24 @@ describe("core.events tests", () => {
             await utils.timeout(1);
             expect(catched).toBe("outer");
         });
+
+        it("dragstart event", async () => {
+            outer.addEventListener("dragstart", () => {
+                catched = "outer";
+            });
+            inner.dispatchEvent(events.dragstart_event());
+            await utils.timeout(1);
+            expect(catched).toBe("outer");
+        });
+
+        it("dragend event", async () => {
+            outer.addEventListener("dragend", () => {
+                catched = "outer";
+            });
+            inner.dispatchEvent(events.dragend_event());
+            await utils.timeout(1);
+            expect(catched).toBe("outer");
+        });
     });
 
     describe("3 - jQuery vs native", () => {