Add support for opening a test mysql database.

mythtv/configure

@@ -1994,6 +1994,7 @@ MYTHTV_CONFIG_LIST='
     qtwebkit
     qtscript
     qtdbus
+    sqlite3
     taglib
     v4l2
     v4l2prime
@@ -5608,6 +5609,7 @@ if ! disabled network; then
     fi
 fi
 
+use_pkg_config sqlite3 sqlite3 "sqlite3.h" sqlite3_load_extension && enable sqlite3
 require_pkg_config samplerate samplerate samplerate.h src_get_version -lm
 
 # required to compile inline sse with some compilers

mythtv/libs/libmythbase/mythdb.cpp

@@ -8,12 +8,15 @@
 #include <QHash>
 #include <QDir>
 #include <QRegularExpression>
+#include <QStandardPaths>
 
+#include "mythconfig.h"
 #include "mythdb.h"
 #include "mythdbcon.h"
 #include "mythlogging.h"
 #include "mythdirs.h"
 #include "mythcorecontext.h"
+#include "mythmiscutil.h"
 
 static MythDB *mythdb = nullptr;
 static QMutex dbLock;
@@ -53,6 +56,29 @@ void DestroyMythDB(void)
     MythDB::destroyMythDB();
 }
 
+MythDB *GetMythTestDB(const QString& testname)
+{
+    auto * db = MythDB::getMythDB();
+
+    DatabaseParams params {};
+    params.m_dbHostName = "localhost";
+    params.m_dbHostPing = false;
+#if CONFIG_DEBUGTYPE
+    params.m_dbName =
+        QStandardPaths::writableLocation(QStandardPaths::TempLocation) +
+        QDir::separator() +
+        QString("mythtv_%1.%2.sqlite3")
+        .arg(testname).arg(MythRandom(),8,16,QLatin1Char('0'));
+#else
+    Q_UNUSED(testname);
+    params.m_dbName = ":memory:";
+#endif
+    params.m_dbType = "QSQLITE";
+    db->SetDatabaseParams(params);
+
+    return db;
+}
+
 struct SingleSetting
 {
     QString m_key;

mythtv/libs/libmythbase/mythdb.h

@@ -99,5 +99,6 @@ class MBASE_PUBLIC MythDB
 
  MBASE_PUBLIC  MythDB *GetMythDB();
  MBASE_PUBLIC  void DestroyMythDB();
+ MBASE_PUBLIC  MythDB *GetMythTestDB(const QString& testname);
 
 #endif

mythtv/libs/libmythbase/mythdbcon.cpp

@@ -73,17 +73,19 @@ bool TestDatabase(const QString& dbHostName,
     return ret;
 }
 
-MSqlDatabase::MSqlDatabase(QString name)
-    : m_name(std::move(name))
+MSqlDatabase::MSqlDatabase(QString name, QString driver)
+    : m_name(std::move(name)), m_driver(std::move(driver))
 {
-    if (!QSqlDatabase::isDriverAvailable("QMYSQL"))
+    if (!QSqlDatabase::isDriverAvailable(m_driver))
     {
-        LOG(VB_FLUSH, LOG_CRIT, "FATAL: Unable to load the QT mysql driver, is it installed?");
+        LOG(VB_FLUSH, LOG_CRIT,
+            QString("FATAL: Unable to load the QT %1 driver, is it installed?")
+            .arg(m_driver));
         exit(GENERIC_EXIT_DB_ERROR); // Exits before we can process the log queue
         //return;
     }
 
-    m_db = QSqlDatabase::addDatabase("QMYSQL", m_name);
+    m_db = QSqlDatabase::addDatabase(m_driver, m_name);
     LOG(VB_DATABASE, LOG_INFO, "Database object created: " + m_name);
 
     if (!m_db.isValid() || m_db.isOpenError())
@@ -316,7 +318,9 @@ MSqlDatabase *MDBManager::popConnection(bool reuse)
     DBList &list = m_pool[QThread::currentThread()];
     if (list.isEmpty())
     {
-        db = new MSqlDatabase("DBManager" + QString::number(m_nextConnID++));
+        DatabaseParams params = GetMythDB()->GetDatabaseParams();
+        db = new MSqlDatabase("DBManager" + QString::number(m_nextConnID++),
+            params.m_dbType);
         ++m_connCount;
         LOG(VB_DATABASE, LOG_INFO,
                 QString("New DB connection, total: %1").arg(m_connCount));

mythtv/libs/libmythbase/mythdbcon.h

@@ -27,7 +27,7 @@ class MSqlDatabase
   friend class MDBManager;
   friend class MSqlQuery;
   public:
-    explicit MSqlDatabase(QString name);
+    explicit MSqlDatabase(QString name, QString driver = "QMYSQL");
    ~MSqlDatabase(void);
 
     bool OpenDatabase(bool skipdb = false);
@@ -43,6 +43,7 @@ class MSqlDatabase
 
   private:
     QString m_name;
+    QString m_driver;
     QSqlDatabase m_db;
     QDateTime m_lastDBKick;
     DatabaseParams m_dbparms;