fix(ui5-combobox): close popover on "Enter" key press

Now, popover is closed when "Enter" key is pressed.

Fixes: #1940

packages/main/src/ComboBox.js

@@ -489,6 +489,8 @@ class ComboBox extends UI5Element {
 			this.fireEvent("change");
 			this.inner.setSelectionRange(this.value.length, this.value.length);
 		}
+
+		this._closeRespPopover();
 	}
 
 	_selectItem(event) {
@@ -504,7 +506,6 @@ class ComboBox extends UI5Element {
 		});
 
 		this._inputChange();
-		this._closeRespPopover();
 	}
 
 	get _headerTitleText() {

packages/main/test/specs/ComboBox.spec.js

@@ -112,6 +112,37 @@ describe("General interaction", () => {
 		assert.notOk(popover.getProperty("opened"), "Popover should close");
 	});
 
+	it ("Should close popover on item click / change event", () => {
+		browser.url("http://localhost:8080/test-resources/pages/ComboBox.html");
+
+		const combo = $("#combo2");
+		const arrow = combo.shadow$("[input-icon]");
+		const input = combo.shadow$("#ui5-combobox-input");
+		const staticAreaItemClassName = browser.getStaticAreaItemClassName("#combo2");
+		const popover = browser.$(`.${staticAreaItemClassName}`).shadow$("ui5-responsive-popover");
+		let listItems = popover.$("ui5-list").$$("ui5-li");
+
+		// act
+		input.click();
+		input.keys("b");
+
+		// assert
+		assert.ok(popover.getProperty("opened"), "Popover should be opened");
+
+		// act
+		input.keys("Enter");
+
+		// assert
+		assert.notOk(popover.getProperty("opened"), "Popover should be closed");
+
+		// act
+		arrow.click();
+		listItems[0].click();
+
+		// assert
+		assert.notOk(popover.getProperty("opened"), "Popover should be closed");
+	});
+
 	it ("Tests change event", () => {
 		const dummyTarget = $("#combo");
 		const placeholder = $("#change-placeholder");