diff --git a/kdevplatform/tests/testfile.cpp b/kdevplatform/tests/testfile.cpp
--- a/kdevplatform/tests/testfile.cpp
+++ b/kdevplatform/tests/testfile.cpp
@@ -30,6 +30,7 @@
 #include <language/duchain/duchain.h>
 #include <language/backgroundparser/backgroundparser.h>
 #include <interfaces/icore.h>
+#include <interfaces/idocumentcontroller.h>
 #include <interfaces/ilanguagecontroller.h>
 #include <project/projectmodel.h>
 
@@ -123,6 +124,25 @@
 
 TestFile::~TestFile()
 {
+    IDocument* document = ICore::self()->documentController()->documentForUrl(d->url.toUrl());
+    if (document) {
+        document->close(KDevelop::IDocument::Discard);
+    }
+    
+    auto backgroundParser = ICore::self()->languageController()->backgroundParser();
+    backgroundParser->removeDocument(d->url, this);
+    if (backgroundParser->parseJobForDocument(d->url)) {
+        bool finished = false;
+        connect(backgroundParser, &BackgroundParser::parseJobFinished, this, [this, &finished](KDevelop::ParseJob* job) {
+            if (job->document() == d->url) {
+                finished = true;
+            }
+        });
+        if (backgroundParser->parseJobForDocument(d->url)) {
+            QTRY_VERIFY(finished);
+        }
+    }
+    
     if (d->topContext && !d->keepDUChainData) {
         DUChainWriteLocker lock;
         DUChain::self()->removeDocumentChain(d->topContext.data());
diff --git a/plugins/clang/tests/test_duchain.cpp b/plugins/clang/tests/test_duchain.cpp
--- a/plugins/clang/tests/test_duchain.cpp
+++ b/plugins/clang/tests/test_duchain.cpp
@@ -113,6 +113,11 @@
 
 void TestDUChain::cleanup()
 {
+    // Tests should not leave the background parser running such that they do
+    // not affect subsequent tests. This assert also helps avoiding parse jobs being
+    // started on TestFiles which were already destructed.
+    Q_ASSERT(ICore::self()->languageController()->backgroundParser()->isIdle());
+    Q_ASSERT(ICore::self()->documentController()->openDocuments().isEmpty());
     if (m_provider) {
         IDefinesAndIncludesManager::manager()->unregisterBackgroundProvider(m_provider.data());
     }
@@ -428,6 +433,7 @@
 
         file.parse(TopDUContext::Features(TopDUContext::AllDeclarationsContextsAndUses | TopDUContext::ForceUpdateRecursive));
     }
+    file.waitForParsed(500);
 }
 
 void TestDUChain::testReparseError()
@@ -448,6 +454,7 @@
 
         file.parse(TopDUContext::Features(TopDUContext::AllDeclarationsContextsAndUses | TopDUContext::ForceUpdateRecursive));
     }
+    file.waitForParsed(500);
 }
 
 void TestDUChain::testTemplate()
@@ -658,6 +665,7 @@
 
         file.parse(TopDUContext::Features(TopDUContext::AllDeclarationsContextsAndUses | TopDUContext::ForceUpdateRecursive));
     }
+    file.waitForParsed(500);
 }
 
 void TestDUChain::testReparseBaseClassesTemplates()
@@ -687,6 +695,7 @@
 
         file.parse(TopDUContext::Features(TopDUContext::AllDeclarationsContextsAndUses | TopDUContext::ForceUpdateRecursive));
     }
+    file.waitForParsed(500);
 }
 
 void TestDUChain::testGetInheriters_data()
@@ -982,22 +991,32 @@
     auto documentController = ICore::self()->documentController();
 
     // open first document (no activation)
-    auto doc = documentController->openDocument(file1.url().toUrl(), KTextEditor::Range::invalid(), {IDocumentController::DoNotActivate});
-    QVERIFY(doc);
+    auto doc1 = documentController->openDocument(file1.url().toUrl(), KTextEditor::Range::invalid(), {IDocumentController::DoNotActivate});
+    QVERIFY(doc1);
     QVERIFY(backgroundParser->isQueued(file1.url()));
     QCOMPARE(backgroundParser->priorityForDocument(file1.url()), (int)BackgroundParser::NormalPriority);
 
     // open second document, activate
-    doc = documentController->openDocument(file2.url().toUrl());
-    QVERIFY(doc);
+    auto doc2 = documentController->openDocument(file2.url().toUrl());
+    QVERIFY(doc2);
     QVERIFY(backgroundParser->isQueued(file2.url()));
     QCOMPARE(backgroundParser->priorityForDocument(file2.url()), (int)BackgroundParser::BestPriority);
 
     // open third document, activate, too
-    doc = documentController->openDocument(file3.url().toUrl());
-    QVERIFY(doc);
+    auto doc3 = documentController->openDocument(file3.url().toUrl());
+    QVERIFY(doc3);
     QVERIFY(backgroundParser->isQueued(file3.url()));
     QCOMPARE(backgroundParser->priorityForDocument(file3.url()), (int)BackgroundParser::BestPriority);
+
+    // Wait for the parsing to finish to avoid errors like "error: error reading '/tmp/testfile_SD1554.cpp'"
+    // due to the TestFiles getting removed.
+    file1.parseAndWait();
+    file2.parseAndWait();
+    file3.parseAndWait();
+
+    doc1->close(KDevelop::IDocument::Discard);
+    doc2->close(KDevelop::IDocument::Discard);
+    doc3->close(KDevelop::IDocument::Discard);
 }
 
 void TestDUChain::testSystemIncludes()