WebAssembly: Reorganize plugin tests

Change-Id: I1e2be15877ef4d1adc8355b820c1b8fc333d6409
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/webassembly/webassembly_test.h

@@ -0,0 +1,21 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#pragma once
+
+#include <qobject.h>
+
+namespace WebAssembly::Internal {
+
+class WebAssemblyTest : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void testEmSdkEnvParsing();
+    void testEmSdkEnvParsing_data();
+    void testEmrunBrowserListParsing();
+    void testEmrunBrowserListParsing_data();
+};
+
+} // WebAssembly::Internal