fix: global search regression with wagtail 7.2 (#842)

`content_type` field was renamed to `_django_content_type`
https://docs.wagtail.org/en/latest/releases/7.2.html#elasticsearch-and-opensearch-users-should-run-update-index-after-upgrading

also adds simple e2e tests for global search

Author: sgfost

django/home/jinja2/home/search.jinja

@@ -15,7 +15,7 @@
 
 {% block content %}
 {% for result in results %}
-<div class="card">
+<div data-cy="search-result" class="card">
     <div class="card-header">{{ result.type.title() }} - <a href="{{ result.url }}">{{ result.title|default("Not
             available") }}</a></div>
     <div class="card-body">

django/home/search.py

@@ -19,7 +19,7 @@
 
 
 def get_content_type(result):
-    content_type_strs = result["_source"]["content_type"]
+    content_type_strs = result["_source"]["_django_content_type"]
     model = apps.get_model(content_type_strs[-1])
     return model
 

e2e/cypress/tests/search.spec.ts

@@ -0,0 +1,15 @@
+import { getDataCy } from "../support/util";
+
+describe("Sitewide search tests", () => {
+  it("should display search results for a common query", () => {
+    cy.visit("/search/?query=model");
+    // should have at least one result
+    getDataCy("search-result").should("have.length.greaterThan", 0);
+  });
+
+  it("should show no results message for nonsense query", () => {
+    cy.visit("/search/?query=xyznonexistentquerythatshouldfindnothing123");
+    // should have no results
+    getDataCy("search-result").should("not.exist");
+  });
+});