tst_qqmlenginecleanup::test_customModuleCleanup(): Add error output

The test fails for MinGW in the CI for unknown reasons. Output
the error string on failure.

Change-Id: I96415c9d5753f9013be22b55884175fda6604130
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
(cherry picked from commit cffae9109eecc838a5b107cc58f43637a3c3279e)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 10 insertions, 2 deletions

diff --git a/tests/auto/qml/qqmlenginecleanup/tst_qqmlenginecleanup.cpp b/tests/auto/qml/qqmlenginecleanup/tst_qqmlenginecleanup.cpp
index 26b2b839ea..a35fb4ac32 100644
--- a/tests/auto/qml/qqmlenginecleanup/tst_qqmlenginecleanup.cpp
+++ b/tests/auto/qml/qqmlenginecleanup/tst_qqmlenginecleanup.cpp
@@ -171,20 +171,28 @@ void tst_qqmlenginecleanup::test_valueTypeProviderModule()
     QVERIFY(noDangling);
 }
 
+static QByteArray msgModuleCleanupFail(int attempt, const QQmlComponent &c)
+{
+    return "Attempt #" + QByteArray::number(attempt) + " :"
+           + c.errorString().toUtf8();
+}
+
 void tst_qqmlenginecleanup::test_customModuleCleanup()
 {
     for (int i = 0; i < 5; ++i) {
         qmlClearTypeRegistrations();
 
         QQmlEngine engine;
+        engine.setOutputWarningsToStandardError(true);
         engine.addImportPath(QT_TESTCASE_BUILDDIR);
 
         QQmlComponent component(&engine);
         component.setData("import CustomModule 1.0\nModuleType {}", QUrl());
-        QCOMPARE(component.status(), QQmlComponent::Ready);
+        QVERIFY2(component.status() == QQmlComponent::Ready,
+                 msgModuleCleanupFail(i, component).constData());
 
         QScopedPointer<QObject> object(component.create());
-        QVERIFY(!object.isNull());
+        QVERIFY2(!object.isNull(), msgModuleCleanupFail(i, component).constData());
     }
 }