[IMP] qweb: compiler: support t-key on node and component without t-foreach

tests/blockdom/toggler.test.ts

@@ -54,4 +54,61 @@ describe("togglers", () => {
     expect(fixture.innerHTML).toBe("<p>hey</p>");
     expect(fixture.firstChild).not.toBe(textnode);
   });
+
+  test("beforeRemove is called", () => {
+    const block = createBlock("<p>hey</p>");
+
+    function blockOverriden() {
+      const vn = block();
+      vn.beforeRemove = () => {
+        steps.push("beforeRemove");
+      };
+      return vn;
+    }
+
+    const steps: string[] = [];
+    const tree = toggler("key1", blockOverriden());
+    mount(tree, fixture);
+    expect(fixture.innerHTML).toBe("<p>hey</p>");
+    patch(tree, toggler("key2", text("foo")));
+    expect(fixture.innerHTML).toBe("foo");
+
+    patch(tree, toggler("key3", blockOverriden()), true);
+    expect(fixture.innerHTML).toBe("<p>hey</p>");
+
+    patch(tree, toggler("key2", text("foo")), true);
+    expect(fixture.innerHTML).toBe("foo");
+
+    expect(steps).toEqual(["beforeRemove"]);
+  });
+
+  test("beforeRemove is called when within a block", () => {
+    const block = createBlock("<p><block-child-0/></p>");
+    const conditionalBlock = createBlock("<p>hey</p>");
+
+    const steps: string[] = [];
+
+    function blockOverriden() {
+      const vn = conditionalBlock();
+      vn.beforeRemove = function () {
+        steps.push("beforeRemove");
+      };
+      return vn;
+    }
+    const mainBlock = block([], [toggler("key1", blockOverriden())]);
+
+    mount(mainBlock, fixture);
+    expect(fixture.innerHTML).toBe("<p><p>hey</p></p>");
+
+    patch(mainBlock, block([], []));
+    expect(fixture.innerHTML).toBe("<p></p>");
+
+    patch(mainBlock, block([], [toggler("key1", blockOverriden())]), true);
+    expect(fixture.innerHTML).toBe("<p><p>hey</p></p>");
+
+    patch(mainBlock, block([], []), true);
+    expect(fixture.innerHTML).toBe("<p></p>");
+
+    expect(steps).toEqual(["beforeRemove"]);
+  });
 });