Add testframework and start bash completion. Not functional yet

.gitmodules

@@ -4,3 +4,6 @@
 [submodule "linklist-lib"]
 	path = linklist-lib
 	url = https://git.shimatta.de/mhu/linklist-lib.git
+[submodule "test/catch2"]
+	path = test/catch2
+	url = https://git.shimatta.de/3rd-party/catch2.git

CMakeLists.txt

@@ -91,3 +91,5 @@ else (DOXYGEN_FOUND)
 	message("${BoldMagenta}Doxygen needs to be installed to generate the doxygen documentation${ColorReset}")
 	message("${BoldMagenta}doxygen target will not be available${ColorReset}")
 endif (DOXYGEN_FOUND)
+
+add_subdirectory(test)

bash-completion/patchelfcrc

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+function _patchelfcrc() {
+	echo "Cursor index: $COMP_CWORD"
+	echo "line as array: $COMP_WORDS"
+	echo "line as string: $COMP_LINE" 
+}
+
+complete -F _patchelfcrc patchelfcrc

test/CMakeLists.txt

@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 3.5)
+
+project(patchelfcrc-test LANGUAGES CXX C)
+add_subdirectory(catch2 EXCLUDE_FROM_ALL)
+
+add_custom_target(test "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}" "-r compact" "-s" DEPENDS ${PROJECT_NAME})
+aux_source_directory("src" TEST_SOURCES)
+set(DUT_SOURCES ${CMAKE_CURRENT_LIST_DIR}/../src/crc.c)
+
+add_executable(${PROJECT_NAME} EXCLUDE_FROM_ALL ${TEST_SOURCES} ${DUT_SOURCES})
+target_link_libraries(${PROJECT_NAME} PRIVATE Catch2::Catch2WithMain)

test/catch2

@@ -0,0 +1 @@
+Subproject commit 0631b607ee2bbc07c7c238f0b15b23ef21926960