2 files changed, 79 insertions, 0 deletions
diff --git a/tests/auto/core/devtools/CMakeLists.txt b/tests/auto/core/devtools/CMakeLists.txt
new file mode 100644
index 000000000..efde75240
--- /dev/null
+++ b/tests/auto/core/devtools/CMakeLists.txt
@@ -0,0 +1,10 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+qt_internal_add_test(tst_devtools
+    SOURCES
+        tst_devtools.cpp
+    LIBRARIES
+        Qt::WebEngineCore
+)
+
diff --git a/tests/auto/core/devtools/tst_devtools.cpp b/tests/auto/core/devtools/tst_devtools.cpp
new file mode 100644
index 000000000..7284f0d51
--- /dev/null
+++ b/tests/auto/core/devtools/tst_devtools.cpp
@@ -0,0 +1,69 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+#include <QtTest/QtTest>
+
+#include <qwebenginepage.h>
+
+class tst_DevTools : public QObject {
+    Q_OBJECT
+
+private Q_SLOTS:
+    void attachAndDestroyPageFirst();
+    void attachAndDestroyInspectorFirst();
+};
+
+void tst_DevTools::attachAndDestroyPageFirst()
+{
+    // External inspector + manual destruction of page first
+    QWebEnginePage* page = new QWebEnginePage();
+    QWebEnginePage* inspector = new QWebEnginePage();
+
+    QSignalSpy spy(page, &QWebEnginePage::loadFinished);
+    page->load(QUrl("data:text/plain,foobarbaz"));
+    QTRY_COMPARE_WITH_TIMEOUT(spy.size(), 1, 12000);
+
+    // shouldn't do anything until page is set
+    page->triggerAction(QWebEnginePage::InspectElement);
+
+    inspector->setInspectedPage(page);
+    page->triggerAction(QWebEnginePage::InspectElement);
+
+    // This is deliberately racy:
+    QTest::qWait(10);
+
+    delete page;
+    delete inspector;
+}
+
+void tst_DevTools::attachAndDestroyInspectorFirst()
+{
+    // External inspector + manual destruction of inspector first
+    QWebEnginePage* page = new QWebEnginePage();
+
+    // shouldn't do anything until page is set
+    page->triggerAction(QWebEnginePage::InspectElement);
+
+    QWebEnginePage* inspector = new QWebEnginePage();
+    inspector->setInspectedPage(page);
+
+    QSignalSpy spy(page, &QWebEnginePage::loadFinished);
+    page->setHtml(QStringLiteral("<body><h1>FOO BAR!</h1></body>"));
+    QTRY_COMPARE_WITH_TIMEOUT(spy.size(), 1, 12000);
+
+    page->triggerAction(QWebEnginePage::InspectElement);
+
+    delete inspector;
+
+    page->triggerAction(QWebEnginePage::InspectElement);
+
+    // This is deliberately racy:
+    QTest::qWait(10);
+
+    delete page;
+}
+
+
+QTEST_MAIN(tst_DevTools)
+
+#include "tst_devtools.moc"