tests: merge build of tests within main build

Instead of a separate CMakeLists.txt for the tests, make them built
together with the rest of the main project. This behaviour is off
by default, and can be enabled using ENABLE_TESTING.

Furthermore, the testing facilities of cmake are now used, so ctest
(invoked by `make test`) knows about the sqlb-unittests. Thus, adapt
the Travis build steps, building the main sources and executing the
tests twice, one for sqlite and one for sqlcipher.

tests/CMakeLists.txt

@@ -1,84 +0,0 @@
-project(sqlb-unittests)
-cmake_minimum_required(VERSION 2.8.7)
-
-OPTION(USE_QT5 FALSE "Build with qt5")
-
-if(NOT CMAKE_BUILD_TYPE)
-    set(CMAKE_BUILD_TYPE "Release")
-endif()
-
-set(ANTLR_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../libs/antlr-2.7.7")
-add_subdirectory("${ANTLR_DIR}" "${CMAKE_CURRENT_BINARY_DIR}/antlr")
-
-if(USE_QT5)
-    find_package(Qt5Widgets REQUIRED)
-    set(CMAKE_AUTOMOC ON)
-    set(CMAKE_INCLUDE_CURRENT_DIR ON)
-else()
-    find_package(Qt4 COMPONENTS QtCore QtTest QtGui REQUIRED)
-    include("${QT_USE_FILE}")
-    add_definitions(${QT_DEFINITIONS})
-endif()
-
-# add extra library path for MacOS
-if(APPLE)
-    find_library(LIBSQLITE sqlite3 HINTS /usr/local/lib /usr/local/opt/sqlite/lib)
-    set(ADDITIONAL_INCLUDE_PATHS /usr/local/include /usr/local/opt/sqlite/include)
-else(APPLE)
-    find_library(LIBSQLITE sqlite3)
-endif(APPLE)
-
-set(SQLB_SRC
-	../src/sqlitedb.cpp
-	../src/sqlitetablemodel.cpp
-	../src/sqlitetypes.cpp
-	../src/csvparser.cpp
-	../src/grammar/Sqlite3Lexer.cpp
-	../src/grammar/Sqlite3Parser.cpp
-	../src/PreferencesDialog.cpp
-	../src/tests/TestImport.cpp
-	../src/tests/testsqlobjects.cpp
-	../src/tests/TestMain.cpp
-	../src/FileDialog.cpp
-)
-
-set(SQLB_HDR
-	../src/grammar/sqlite3TokenTypes.hpp
-	../src/grammar/Sqlite3Lexer.hpp
-	../src/grammar/Sqlite3Parser.hpp
-	../src/csvparser.h
-	../src/sqlitetypes.h)
-
-set(SQLB_FORMS
-	../src/PreferencesDialog.ui)
-
-set(SQLB_MOC_HDR
-	../src/sqlitedb.h
-	../src/sqlitetablemodel.h
-	../src/PreferencesDialog.h
-	../src/tests/TestImport.h
-	../src/tests/testsqlobjects.h
-	../src/FileDialog.h
-)
-
-if(USE_QT5)
-    QT5_WRAP_CPP(SQLB_MOC ${SQLB_MOC_HDR})
-    QT5_WRAP_UI(SQLB_FORM_HDR ${SQLB_FORMS})
-else()
-    QT4_WRAP_CPP(SQLB_MOC ${SQLB_MOC_HDR})
-    QT4_WRAP_UI(SQLB_FORM_HDR ${SQLB_FORMS})
-endif()
-
-include_directories("${CMAKE_CURRENT_BINARY_DIR}" "${ANTLR_DIR}" ../src)
-
-add_executable(${PROJECT_NAME} ${SQLB_MOC} ${SQLB_HDR} ${SQLB_SRC} ${SQLB_FORM_HDR})
-
-if(USE_QT5)
-    qt5_use_modules(${PROJECT_NAME} Test Widgets Gui)
-    set(QT_LIBRARIES "")
-endif()
-
-add_dependencies(${PROJECT_NAME} antlr)
-target_link_libraries(${PROJECT_NAME} antlr ${QT_LIBRARIES} ${LIBSQLITE})
-
-MESSAGE(STATUS "Build type is ${CMAKE_BUILD_TYPE}")