add loadtemplates method to qweb

web/static/tests/core/qweb_vdom.test.ts

@@ -679,3 +679,19 @@ describe("t-ref", () => {
     expect(refs.myspan.tagName).toBe("SPAN");
   });
 });
+
+describe("loading templates", () => {
+  test("can load a few templates from a xml string", () => {
+    const data = `
+      <?xml version="1.0" encoding="UTF-8"?>
+      <templates id="template" xml:space="preserve">
+
+        <t t-name="items"><li>ok</li><li>foo</li></t>
+
+        <ul t-name="main"><t t-call="items"/></ul>
+      </templates>`;
+    qweb.loadTemplates(data);
+    const result = renderToString(qweb, "main");
+    expect(result).toBe("<ul><li>ok</li><li>foo</li></ul>");
+  });
+});