added tests for backends

backends/postgres/CMakeLists.txt

@@ -18,6 +18,8 @@ set(SOURCES
 
 set(LIBRARY_TARGET matador-postgres)
 
+add_subdirectory(test)
+
 add_library(${LIBRARY_TARGET} MODULE ${SOURCES} ${HEADER})
 
 set_target_properties(${LIBRARY_TARGET}

backends/postgres/test/CMakeLists.txt

@@ -0,0 +1,34 @@
+Include(FetchContent)
+
+FetchContent_Declare(
+  Catch2
+  GIT_REPOSITORY https://github.com/catchorg/Catch2.git
+  GIT_TAG        v3.4.0 # or a later release
+)
+
+FetchContent_MakeAvailable(Catch2)
+
+SET(POSTGRES_CONNECTION_STRING "postgresql://test:test123@127.0.0.1/matador_test" CACHE STRING "postgresql connection string")
+
+CONFIGURE_FILE(Connection.hpp.in ${PROJECT_BINARY_DIR}/backends/postgres/test/connection.hpp @ONLY IMMEDIATE)
+
+MESSAGE(STATUS "postgresql connection string: ${POSTGRES_CONNECTION_STRING}")
+MESSAGE(STATUS "current binary dir: ${CMAKE_CURRENT_BINARY_DIR}")
+
+set(TEST_SOURCES ../../tests/QueryTest.cpp)
+
+set(LIBRARY_TEST_TARGET postgres_tests)
+
+add_executable(${LIBRARY_TEST_TARGET} ${TEST_SOURCES})
+
+target_link_libraries(${LIBRARY_TEST_TARGET} PRIVATE
+  Catch2::Catch2WithMain
+  matador
+  ${CMAKE_DL_LIBS}
+  ${PostgreSQL_LIBRARY})
+
+target_include_directories(${LIBRARY_TEST_TARGET}
+  PUBLIC $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}>/include
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
+
+add_test(NAME matador_postgres_tests COMMAND ${LIBRARY_TEST_TARGET})

backends/postgres/test/Connection.hpp.in

@@ -0,0 +1,10 @@
+#ifndef POSTGRES_CONNECTION_HPP
+#define POSTGRES_CONNECTION_HPP
+
+#define MATADOR_DB_TYPE "Postgres"
+
+namespace matador::test::connection {
+ const char* const dns = "@POSTGRES_CONNECTION_STRING@";
+}
+
+#endif /*POSTGRES_CONNECTION_HPP*/

backends/tests/QueryTest.cpp

@@ -0,0 +1,7 @@
+#include "catch2/catch_test_macros.hpp"
+
+#include <connection.hpp>
+
+TEST_CASE(MATADOR_DB_TYPE " - Query test", "[query]") {
+  REQUIRE(std::string(matador::test::connection::dns) == "hallo welt");
+}