[REF] initial prototype of owl 2

tests/blockdom/block_event_handling.test.ts

@@ -0,0 +1,108 @@
+import { mount, createBlock, multi, config, patch } from "../../src/blockdom";
+// import { defaultHandler, setupMainHandler } from "../../src/bdom/block";
+import { makeTestFixture } from "./helpers";
+
+//------------------------------------------------------------------------------
+// Setup and helpers
+//------------------------------------------------------------------------------
+
+let fixture: HTMLElement;
+let initialHandler = config.mainEventHandler;
+
+beforeEach(() => {
+  fixture = makeTestFixture();
+  config.mainEventHandler = initialHandler;
+});
+
+afterEach(() => {
+  fixture.remove();
+});
+
+test("simple event handling, with function", async () => {
+  const block = createBlock('<div block-handler-0="click"></div>');
+  let n = 0;
+  const tree = block([() => n++]);
+
+  mount(tree, fixture);
+  expect(fixture.innerHTML).toBe("<div></div>");
+
+  expect(fixture.firstChild).toBeInstanceOf(HTMLDivElement);
+  expect(n).toBe(0);
+  (fixture.firstChild as HTMLDivElement).click();
+  expect(n).toBe(1);
+});
+
+test("simple event handling, with function and argument", async () => {
+  const block = createBlock('<div block-handler-0="click"></div>');
+  let n = 0;
+  const onClick = (arg: number) => {
+    n += arg;
+  };
+  const tree = block([[onClick, 3]]);
+
+  mount(tree, fixture);
+  expect(fixture.innerHTML).toBe("<div></div>");
+
+  expect(fixture.firstChild).toBeInstanceOf(HTMLDivElement);
+  expect(n).toBe(0);
+  (fixture.firstChild as HTMLDivElement).click();
+  expect(n).toBe(3);
+
+  patch(tree, block([[onClick, 5]]));
+  (fixture.firstChild as HTMLDivElement).click();
+  expect(n).toBe(8);
+});
+
+test("simple event handling ", async () => {
+  config.mainEventHandler = (data, ev) => {
+    if (typeof data === "function") {
+      data();
+    } else {
+      const [owner, method] = data;
+      owner[method]();
+    }
+  };
+
+  const block = createBlock('<div block-handler-0="click"></div>');
+  let n = 0;
+  const obj = { f: () => n++ };
+  const tree = block([[obj, "f"]]);
+
+  mount(tree, fixture);
+  expect(fixture.innerHTML).toBe("<div></div>");
+
+  expect(fixture.firstChild).toBeInstanceOf(HTMLDivElement);
+  expect(n).toBe(0);
+  (fixture.firstChild as HTMLDivElement).click();
+  expect(n).toBe(1);
+});
+
+test("can bind two handlers on same node", async () => {
+  const block = createBlock('<div block-handler-0="click" block-handler-1="dblclick"></div>');
+  let steps: string[] = [];
+  let handleClick = () => steps.push("click");
+  let handleDblClick = () => steps.push("dblclick");
+  const tree = block([handleClick, handleDblClick]);
+
+  mount(tree, fixture);
+  expect(fixture.innerHTML).toBe("<div></div>");
+
+  (fixture.firstChild as HTMLDivElement).click();
+  (fixture.firstChild as HTMLDivElement).dispatchEvent(new Event("dblclick", { bubbles: true }));
+  expect(steps).toEqual(["click", "dblclick"]);
+});
+
+test("two same block nodes with different handlers", async () => {
+  const block = createBlock('<div block-handler-0="click"></div>');
+  let steps: string[] = [];
+  let handler1 = () => steps.push("1");
+  let handler2 = () => steps.push("2");
+  const tree = multi([block([handler1]), block([handler2])]);
+
+  mount(tree, fixture);
+  expect(fixture.innerHTML).toBe("<div></div><div></div>");
+
+  (fixture.firstChild as HTMLDivElement).click();
+  (fixture.firstChild!.nextSibling as HTMLDivElement).click();
+  expect(steps).toEqual(["1", "2"]);
+});