Add unit test for regex parsing comments in SQL query (#826)

src/tests/TestRegex.cpp

@@ -0,0 +1,42 @@
+#include "TestRegex.h"
+#include "../sqlitetablemodel.h"
+
+#include <QtTest/QTest>
+
+QTEST_APPLESS_MAIN(TestRegex)
+
+void TestRegex::sqlQueryComments_data()
+{
+    QTest::addColumn<QString>("dirtyQuery");
+    QTest::addColumn<QString>("clearQuery");
+
+    QTest::newRow("test1")
+        << // dirtyQuery
+        "SELECT * -- asd ffdsf\n"
+        "-- saf ewf sf\n"
+        "-- dsaf fd\n"
+        "FROM \t-- sfsdf\n"
+        "qwfwqf -- asdasd"
+        << // clearQuery
+        "SELECT *\nFROM\nqwfwqf";
+
+    QTest::newRow("test2")
+        << // dirtyQuery
+        "SELECT *-- comment\n"
+        "FROM\n\n"
+        "-- something\n"
+        "qwfqwf"
+        << // cleanQuery
+        "SELECT *\nFROM\nqwfqwf";
+}
+
+void TestRegex::sqlQueryComments()
+{
+    SqliteTableModel model;
+
+    QFETCH(QString, dirtyQuery);
+    QFETCH(QString, clearQuery);
+
+    model.removeCommentsFromQuery(dirtyQuery);
+    QCOMPARE(dirtyQuery, clearQuery);
+}