ClangPchManager: Introduce PchTasksMerger

So far no merging is happening but we will add it after the rest of the
pipeline is in shape.

Task-number: QTCREATORBUG-21381
Change-Id: I610c243eabcb305843ad6339fdc636b0c3966fc1
Reviewed-by: Ivan Donchevskii <[email protected]>

16 files changed, 355 insertions, 43 deletions

diff --git a/src/tools/clangpchmanagerbackend/source/clangpchmanagerbackend-source.pri b/src/tools/clangpchmanagerbackend/source/clangpchmanagerbackend-source.pri
index 8a9fff7402e..f5a8068b6b1 100644
--- a/src/tools/clangpchmanagerbackend/source/clangpchmanagerbackend-source.pri
+++ b/src/tools/clangpchmanagerbackend/source/clangpchmanagerbackend-source.pri
@@ -5,7 +5,8 @@ SOURCES += \
     $$PWD/pchmanagerserver.cpp \
     $$PWD/projectparts.cpp \
     $$PWD/projectpartqueue.cpp \
-    $$PWD/pchtaskgenerator.cpp
+    $$PWD/pchtaskgenerator.cpp \
+    $$PWD/pchtasksmerger.cpp
 
 HEADERS += \
     $$PWD/pchmanagerserver.h \
@@ -35,7 +36,9 @@ HEADERS += \
     $$PWD/builddependenciesstorage.h \
     $$PWD/builddependencygeneratorinterface.h \
     $$PWD/usedmacrofilter.h \
-    $$PWD/pchtasksmergerinterface.h
+    $$PWD/pchtasksmergerinterface.h \
+    $$PWD/pchtasksmerger.h \
+    $$PWD/pchtaskqueueinterface.h
 
 !isEmpty(LIBTOOLING_LIBS) {
 SOURCES += \
diff --git a/src/tools/clangpchmanagerbackend/source/pchtask.h b/src/tools/clangpchmanagerbackend/source/pchtask.h
index 81d48cc5ed0..e1439d2ec91 100644
--- a/src/tools/clangpchmanagerbackend/source/pchtask.h
+++ b/src/tools/clangpchmanagerbackend/source/pchtask.h
@@ -46,6 +46,15 @@ public:
         , usedMacros(usedMacros)
     {}
 
+    friend bool operator==(const PchTask &first, const PchTask &second)
+    {
+        return first.projectPartId == second.projectPartId
+               && first.dependentIds == second.dependentIds && first.includes == second.includes
+               && first.compilerMacros == second.compilerMacros
+               && first.usedMacros == second.usedMacros;
+    }
+
+public:
     Utils::SmallString projectPartId;
     Utils::SmallStringVector dependentIds;
     FilePathIds includes;
@@ -53,5 +62,19 @@ public:
     UsedMacros usedMacros;
 };
 
+class PchTaskSet
+{
+public:
+    PchTaskSet(PchTask &&system, PchTask &&project)
+        : system(std::move(system))
+        , project(std::move(project))
+    {}
+
+public:
+    PchTask system;
+    PchTask project;
+};
+
 using PchTasks = std::vector<PchTask>;
+using PchTaskSets = std::vector<PchTaskSet>;
 } // namespace ClangBackEnd
diff --git a/src/tools/clangpchmanagerbackend/source/pchtaskgenerator.cpp b/src/tools/clangpchmanagerbackend/source/pchtaskgenerator.cpp
index 22c91fb827e..37311aa2384 100644
--- a/src/tools/clangpchmanagerbackend/source/pchtaskgenerator.cpp
+++ b/src/tools/clangpchmanagerbackend/source/pchtaskgenerator.cpp
@@ -36,23 +36,28 @@ namespace ClangBackEnd {
 
 void PchTaskGenerator::create(V2::ProjectPartContainers &&projectParts)
 {
+    PchTaskSets pchTaskSets;
+    pchTaskSets.reserve(projectParts.size());
+
     for (auto &projectPart : projectParts) {
         BuildDependency buildDependency = m_buildDependenciesProvider.create(projectPart);
         UsedMacroFilter filter{buildDependency.includes, buildDependency.usedMacros};
 
         filter.filter(projectPart.compilerMacros);
 
-        m_pchTasksMergerInterface.addTask({projectPart.projectPartId.clone(),
-                                           std::move(filter.systemIncludes),
-                                           std::move(filter.systemCompilerMacros),
-                                           std::move(filter.systemUsedMacros)
+        pchTaskSets.emplace_back(PchTask{projectPart.projectPartId.clone(),
+                                         std::move(filter.systemIncludes),
+                                         std::move(filter.systemCompilerMacros),
+                                         std::move(filter.systemUsedMacros)
 
-                                          },
-                                          {std::move(projectPart.projectPartId),
-                                           std::move(filter.projectIncludes),
-                                           std::move(filter.projectCompilerMacros),
-                                           std::move(filter.projectUsedMacros)});
+                                 },
+                                 PchTask{std::move(projectPart.projectPartId),
+                                         std::move(filter.projectIncludes),
+                                         std::move(filter.projectCompilerMacros),
+                                         std::move(filter.projectUsedMacros)});
     }
+
+    m_pchTasksMergerInterface.mergeTasks(std::move(pchTaskSets));
 }
 
 } // namespace ClangBackEnd
diff --git a/src/tools/clangpchmanagerbackend/source/pchtaskqueueinterface.h b/src/tools/clangpchmanagerbackend/source/pchtaskqueueinterface.h
new file mode 100644
index 00000000000..45e1db8f9d8
--- /dev/null
+++ b/src/tools/clangpchmanagerbackend/source/pchtaskqueueinterface.h
@@ -0,0 +1,43 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#pragma once
+
+#include "queueinterface.h"
+#include "pchtask.h"
+
+namespace ClangBackEnd {
+
+class PchTaskQueueInterface : public QueueInterface
+{
+public:
+    virtual void addSystemPchTasks(PchTasks &&pchTasks) = 0;
+    virtual void addProjectPchTasks(PchTasks &&pchTasks) = 0;
+    virtual void removePchTasks(const Utils::SmallStringVector &projectsPartIds) = 0;
+
+protected:
+    ~PchTaskQueueInterface() = default;
+};
+} // namespace ClangBackEnd
diff --git a/src/tools/clangpchmanagerbackend/source/pchtasksmerger.cpp b/src/tools/clangpchmanagerbackend/source/pchtasksmerger.cpp
new file mode 100644
index 00000000000..a241c607643
--- /dev/null
+++ b/src/tools/clangpchmanagerbackend/source/pchtasksmerger.cpp
@@ -0,0 +1,49 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#include "pchtasksmerger.h"
+
+#include "pchtaskqueueinterface.h"
+
+namespace ClangBackEnd {
+
+void PchTasksMerger::mergeTasks(PchTaskSets &&taskSets)
+{
+    PchTasks systemTasks;
+    systemTasks.reserve(taskSets.size());
+    PchTasks projectTasks;
+    projectTasks.reserve(taskSets.size());
+
+    for (PchTaskSet &taskSet : taskSets) {
+        projectTasks.push_back(std::move(taskSet.project));
+        systemTasks.push_back(std::move(taskSet.system));
+    }
+
+    m_pchTaskQueue.addSystemPchTasks(std::move(systemTasks));
+    m_pchTaskQueue.addProjectPchTasks(std::move(projectTasks));
+    m_pchTaskQueue.processEntries();
+}
+
+} // namespace ClangBackEnd
diff --git a/src/tools/clangpchmanagerbackend/source/pchtasksmerger.h b/src/tools/clangpchmanagerbackend/source/pchtasksmerger.h
new file mode 100644
index 00000000000..97bed64e995
--- /dev/null
+++ b/src/tools/clangpchmanagerbackend/source/pchtasksmerger.h
@@ -0,0 +1,48 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#pragma once
+
+#include "pchtasksmergerinterface.h"
+#include "pchtask.h"
+
+namespace ClangBackEnd {
+
+class PchTaskQueueInterface;
+
+class PchTasksMerger : public PchTasksMergerInterface
+{
+public:
+    PchTasksMerger(PchTaskQueueInterface &pchTaskQueue)
+        : m_pchTaskQueue(pchTaskQueue)
+    {}
+
+    void mergeTasks(PchTaskSets &&taskSets) override;
+
+private:
+    PchTaskQueueInterface &m_pchTaskQueue;
+};
+
+} // namespace ClangBackEnd
diff --git a/src/tools/clangpchmanagerbackend/source/pchtasksmergerinterface.h b/src/tools/clangpchmanagerbackend/source/pchtasksmergerinterface.h
index 61bf6f31a88..4fe96581bc8 100644
--- a/src/tools/clangpchmanagerbackend/source/pchtasksmergerinterface.h
+++ b/src/tools/clangpchmanagerbackend/source/pchtasksmergerinterface.h
@@ -31,7 +31,7 @@ namespace ClangBackEnd {
 class PchTasksMergerInterface
 {
 public:
-    virtual void addTask(PchTask &&systemTask, PchTask &&projectTask) = 0;
+    virtual void mergeTasks(PchTaskSets &&taskSets) = 0;
 
 protected:
     ~PchTasksMergerInterface() = default;
diff --git a/tests/unit/unittest/mockpchtaskqueue.h b/tests/unit/unittest/mockpchtaskqueue.h
new file mode 100644
index 00000000000..6ba08b6b7ae
--- /dev/null
+++ b/tests/unit/unittest/mockpchtaskqueue.h
@@ -0,0 +1,49 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#pragma once
+
+#include "googletest.h"
+
+#include <pchtaskqueueinterface.h>
+
+class MockPchTaskQueue : public ClangBackEnd::PchTaskQueueInterface
+{
+public:
+    MOCK_METHOD1(addSystemPchTasks, void(const ClangBackEnd::PchTasks &pchTasks));
+    MOCK_METHOD1(addProjectPchTasks, void(const ClangBackEnd::PchTasks &pchTasks));
+    MOCK_METHOD1(removePchTasks, void(const Utils::SmallStringVector &projectsPartIds));
+    MOCK_METHOD0(processEntries, void ());
+
+    void addSystemPchTasks(ClangBackEnd::PchTasks &&pchTasks) override
+    {
+        addSystemPchTasks(pchTasks);
+    }
+
+    void addProjectPchTasks(ClangBackEnd::PchTasks &&pchTasks) override
+    {
+        addProjectPchTasks(pchTasks);
+    }
+};
diff --git a/tests/unit/unittest/mockpchtasksmerger.h b/tests/unit/unittest/mockpchtasksmerger.h
index f9b4db534bb..c320159d341 100644
--- a/tests/unit/unittest/mockpchtasksmerger.h
+++ b/tests/unit/unittest/mockpchtasksmerger.h
@@ -32,12 +32,7 @@
 class MockPchTasksMerger : public ClangBackEnd::PchTasksMergerInterface
 {
 public:
-    MOCK_METHOD2(addTask,
-                 void(const ClangBackEnd::PchTask &systemPchTask,
-                      const ClangBackEnd::PchTask &projectPchTask));
+    MOCK_METHOD1(mergeTasks, void(const ClangBackEnd::PchTaskSets &pchTaskSets));
 
-    void addTask(ClangBackEnd::PchTask &&systemPchTask, ClangBackEnd::PchTask &&projectPchTask)
-    {
-        addTask(systemPchTask, projectPchTask);
-    }
+    void mergeTasks(ClangBackEnd::PchTaskSets &&pchTaskSets) override { mergeTasks(pchTaskSets); }
 };
diff --git a/tests/unit/unittest/pchtaskgenerator-test.cpp b/tests/unit/unittest/pchtaskgenerator-test.cpp
index 346ad640fe0..9fb90380126 100644
--- a/tests/unit/unittest/pchtaskgenerator-test.cpp
+++ b/tests/unit/unittest/pchtaskgenerator-test.cpp
@@ -37,6 +37,7 @@ using ClangBackEnd::BuildDependencies;
 using ClangBackEnd::CompilerMacro;
 using ClangBackEnd::FilePathId;
 using ClangBackEnd::PchTask;
+using ClangBackEnd::PchTaskSet;
 using ClangBackEnd::SourceEntries;
 using ClangBackEnd::SourceType;
 using ClangBackEnd::UsedMacro;
@@ -77,20 +78,24 @@ TEST_F(PchTaskGenerator, Create)
     ON_CALL(mockBuildDependenciesProvider, create(_)).WillByDefault(Return(buildDependency));
 
     EXPECT_CALL(mockPchTaskMerger,
-                addTask(AllOf(Field(&PchTask::projectPartId, Eq("ProjectPart1")),
-                              Field(&PchTask::includes, ElementsAre(4, 5)),
-                              Field(&PchTask::compilerMacros,
-                                    ElementsAre(CompilerMacro{"SE", "4", 4},
-                                                CompilerMacro{"WU", "5", 5})),
-                              Field(&PchTask::usedMacros,
-                                    ElementsAre(UsedMacro{"SE", 4}, UsedMacro{"WU", 5}))),
-                        AllOf(Field(&PchTask::projectPartId, Eq("ProjectPart1")),
-                              Field(&PchTask::includes, ElementsAre(1, 3)),
-                              Field(&PchTask::compilerMacros,
-                                    ElementsAre(CompilerMacro{"YI", "1", 1},
-                                                CompilerMacro{"SAN", "3", 3})),
-                              Field(&PchTask::usedMacros,
-                                    ElementsAre(UsedMacro{"YI", 1}, UsedMacro{"SAN", 3})))));
+                mergeTasks(ElementsAre(
+                    AllOf(Field(&PchTaskSet::system,
+                                AllOf(Field(&PchTask::projectPartId, Eq("ProjectPart1")),
+                                      Field(&PchTask::includes, ElementsAre(4, 5)),
+                                      Field(&PchTask::compilerMacros,
+                                            ElementsAre(CompilerMacro{"SE", "4", 4},
+                                                        CompilerMacro{"WU", "5", 5})),
+                                      Field(&PchTask::usedMacros,
+                                            ElementsAre(UsedMacro{"SE", 4}, UsedMacro{"WU", 5})))),
+                          AllOf(Field(&PchTaskSet::project,
+                                      AllOf(Field(&PchTask::projectPartId, Eq("ProjectPart1")),
+                                            Field(&PchTask::includes, ElementsAre(1, 3)),
+                                            Field(&PchTask::compilerMacros,
+                                                  ElementsAre(CompilerMacro{"YI", "1", 1},
+                                                              CompilerMacro{"SAN", "3", 3})),
+                                            Field(&PchTask::usedMacros,
+                                                  ElementsAre(UsedMacro{"YI", 1},
+                                                              UsedMacro{"SAN", 3})))))))));
 
     generator.create({projectPart1});
 }
diff --git a/tests/unit/unittest/pchtasksmerger-test.cpp b/tests/unit/unittest/pchtasksmerger-test.cpp
new file mode 100644
index 00000000000..8331e690096
--- /dev/null
+++ b/tests/unit/unittest/pchtasksmerger-test.cpp
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#include "googletest.h"
+
+#include "mockpchtaskqueue.h"
+
+#include <pchtasksmerger.h>
+
+using ClangBackEnd::PchTask;
+using ClangBackEnd::PchTaskSet;
+
+class PchTasksMerger : public testing::Test
+{
+protected:
+    template<class T>
+    T clone(T entry)
+    {
+        return *&entry;
+    }
+
+protected:
+    NiceMock<MockPchTaskQueue> mockPchTaskQueue;
+    ClangBackEnd::PchTasksMerger merger{mockPchTaskQueue};
+    PchTask systemTask1{"ProjectPart1",
+                        {1, 2},
+                        {{"YI", "1", 1}, {"SAN", "3", 3}},
+                        {{"LIANG", 0}, {"YI", 1}}};
+    PchTask projectTask1{"ProjectPart1",
+                         {11, 12},
+                         {{"SE", "4", 4}, {"WU", "5", 5}},
+                         {{"ER", 2}, {"SAN", 3}}};
+    PchTask systemTask2{"ProjectPart2",
+                        {1, 2},
+                        {{"YI", "1", 1}, {"SAN", "3", 3}},
+                        {{"LIANG", 0}, {"YI", 1}}};
+    PchTask projectTask2{"ProjectPart2",
+                         {11, 12},
+                         {{"SE", "4", 4}, {"WU", "5", 5}},
+                         {{"ER", 2}, {"SAN", 3}}};
+};
+
+TEST_F(PchTasksMerger, AddProjectTasks)
+{
+    InSequence s;
+
+    EXPECT_CALL(mockPchTaskQueue, addProjectPchTasks(ElementsAre(projectTask1, projectTask2)));
+    EXPECT_CALL(mockPchTaskQueue, processEntries());
+
+    merger.mergeTasks(
+        {{clone(systemTask1), clone(projectTask1)}, {clone(systemTask1), clone(projectTask2)}});
+
+}
+
+TEST_F(PchTasksMerger, AddSystemTasks)
+{
+    InSequence s;
+
+    EXPECT_CALL(mockPchTaskQueue, addSystemPchTasks(ElementsAre(systemTask1, systemTask2)));
+    EXPECT_CALL(mockPchTaskQueue, processEntries());
+
+    merger.mergeTasks(
+        {{clone(systemTask1), clone(projectTask1)}, {clone(systemTask2), clone(projectTask2)}});
+}
diff --git a/tests/unit/unittest/refactoringcompilationdatabase-test.cpp b/tests/unit/unittest/refactoringcompilationdatabase-test.cpp
index 50d7773a63f..b635d174a98 100644
--- a/tests/unit/unittest/refactoringcompilationdatabase-test.cpp
+++ b/tests/unit/unittest/refactoringcompilationdatabase-test.cpp
@@ -29,7 +29,7 @@
 
 #include <utils/smallstring.h>
 
-#include <QDir>
+#include <utils/temporarydirectory.h>
 
 using testing::Contains;
 using testing::IsEmpty;
@@ -60,8 +60,8 @@ protected:
 
 protected:
     ClangBackEnd::RefactoringCompilationDatabase database;
-    Utils::SmallString temporaryDirectoryPath = QDir::toNativeSeparators(QDir::tempPath());
-    Utils::SmallString temporarySourceFilePath = QDir::toNativeSeparators(QDir::tempPath() + "/data.cpp");
+    Utils::SmallString temporaryDirectoryPath = QDir::toNativeSeparators(Utils::TemporaryDirectory::masterDirectoryPath());
+    Utils::SmallString temporarySourceFilePath = QDir::toNativeSeparators(Utils::TemporaryDirectory::masterDirectoryPath() + "/data.cpp");
 
 };
 
diff --git a/tests/unit/unittest/refactoringserver-test.cpp b/tests/unit/unittest/refactoringserver-test.cpp
index f98d5991fc6..42fff8dfd5a 100644
--- a/tests/unit/unittest/refactoringserver-test.cpp
+++ b/tests/unit/unittest/refactoringserver-test.cpp
@@ -36,7 +36,8 @@
 #include <refactoringserver.h>
 #include <sqlitedatabase.h>
 
-#include <QDir>
+#include <utils/temporarydirectory.h>
+
 #include <QTemporaryFile>
 
 namespace {
@@ -100,7 +101,7 @@ protected:
     FileContainer source{{TESTDATA_DIR, "query_simplefunction.cpp"},
                          sourceContent.clone(),
                          {"cc", toNativePath(TESTDATA_DIR"/query_simplefunction.cpp")}};
-    QTemporaryFile temporaryFile{QDir::tempPath() + "/clangQuery-XXXXXX.cpp"};
+    QTemporaryFile temporaryFile{Utils::TemporaryDirectory::masterDirectoryPath() + "/clangQuery-XXXXXX.cpp"};
     int processingSlotCount = 2;
 };
 
diff --git a/tests/unit/unittest/sqlitedatabase-test.cpp b/tests/unit/unittest/sqlitedatabase-test.cpp
index f003fac0e09..66c1aa83879 100644
--- a/tests/unit/unittest/sqlitedatabase-test.cpp
+++ b/tests/unit/unittest/sqlitedatabase-test.cpp
@@ -32,6 +32,8 @@
 #include <sqlitewritestatement.h>
 #include <utf8string.h>
 
+#include <utils/temporarydirectory.h>
+
 #include <QSignalSpy>
 #include <QTemporaryFile>
 #include <QVariant>
@@ -127,7 +129,8 @@ TEST_F(SqliteDatabase, DatabaseIsInitializedIfDatabasePathExistsAtOpening)
 
 TEST_F(SqliteDatabase, DatabaseIsNotInitializedIfDatabasePathDoesNotExistAtOpening)
 {
-    Sqlite::Database database{Utils::PathString{QDir::tempPath() + "/database_does_not_exist.db"}};
+    Sqlite::Database database{Utils::PathString{Utils::TemporaryDirectory::masterDirectoryPath()
+                                                + "/database_does_not_exist.db"}};
 
     ASSERT_FALSE(database.isInitialized());
 }
diff --git a/tests/unit/unittest/unittest-utility-functions.h b/tests/unit/unittest/unittest-utility-functions.h
index 52f0489928b..6d68c1adfcc 100644
--- a/tests/unit/unittest/unittest-utility-functions.h
+++ b/tests/unit/unittest/unittest-utility-functions.h
@@ -27,7 +27,7 @@
 
 #include <utils/smallstring.h>
 
-#include <QDir>
+#include <utils/temporarydirectory.h>
 
 inline
 bool operator==(const QString &first, const char *second)
@@ -40,6 +40,6 @@ namespace UnitTest {
 inline
 Utils::PathString temporaryDirPath()
 {
-    return Utils::PathString::fromQString(QDir::tempPath());
+    return Utils::PathString::fromQString(Utils::TemporaryDirectory::masterDirectoryPath());
 }
 } // namespace UnitTest
diff --git a/tests/unit/unittest/unittest.pro b/tests/unit/unittest/unittest.pro
index 283a9176cc2..043c7ff0b28 100644
--- a/tests/unit/unittest/unittest.pro
+++ b/tests/unit/unittest/unittest.pro
@@ -108,7 +108,8 @@ SOURCES += \
     compilationdatabaseutils-test.cpp \
     builddependenciesprovider-test.cpp \
     builddependenciesstorage-test.cpp \
-    usedmacrofilter-test.cpp
+    usedmacrofilter-test.cpp \
+    pchtasksmerger-test.cpp
 
 !isEmpty(LIBCLANG_LIBS) {
 SOURCES += \
@@ -258,7 +259,8 @@ HEADERS += \
     mockmodifiedtimechecker.h \
     mockbuilddependenciesstorage.h \
     mockbuilddependencygenerator.h \
-    mockpchtasksmerger.h
+    mockpchtasksmerger.h \
+    mockpchtaskqueue.h
 
 !isEmpty(LIBCLANG_LIBS) {
 HEADERS += \