started idea for testing

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "vendor/unity"]
+	path = vendor/unity
+	url = https://github.com/ThrowTheSwitch/Unity

CMakeLists.txt

@@ -5,7 +5,8 @@ set(CMAKE_C_STANDARD 17)
 
 find_package(LibArchive REQUIRED)
 
-include_directories(include)
+add_subdirectory(vendor/unity)
+include_directories(include vendor/unity/src)
 
 file(GLOB CIETER_SRCS src/cieter/**.c)
 
@@ -14,6 +15,12 @@ if(CMAKE_BUILD_TYPE STREQUAL Release)
 endif()
 
 add_library(cieter SHARED ${CIETER_SRCS})
+target_link_libraries(cieter LibArchive::LibArchive)
+
+if(CMAKE_BUILD_TYPE MATCHES "^Test")
+    enable_testing()
+    add_subdirectory(test)
+endif()
 
 option(BUILD_CIETERD "Build cieterd binary" ON)
 
@@ -21,5 +28,5 @@ if (BUILD_CIETERD)
     file(GLOB CIETERD_SRCS src/cieterd/**.c)
 
     add_executable(cieterd ${CIETERD_SRCS})
-    target_link_libraries(cieterd cieter LibArchive::LibArchive)
+    target_link_libraries(cieterd cieter)
 endif()

test/CMakeLists.txt

@@ -0,0 +1,8 @@
+file(GLOB TEST_SRCS **.c)
+
+foreach(TEST_SRC ${TEST_SRCS})
+    get_filename_component(EXEC_NAME ${TEST_SRC} NAME_WLE)
+    add_executable(${EXEC_NAME} ${TEST_SRC})
+    add_test(NAME ${EXEC_NAME} COMMAND ${EXEC_NAME})
+    target_link_libraries(${EXEC_NAME} cieter unity)
+endforeach()

test/test_dynarray.c

@@ -0,0 +1,17 @@
+#include "unity.h"
+#include "cieter_dynarray.h"
+
+void setUp(void) {}
+void tearDown(void) {}
+
+void test_init() {
+    CieterDynArray *arr = cieter_dynarray_init(2);
+
+    TEST_ASSERT_NOT_NULL(arr);
+}
+
+int main(void) {
+    UNITY_BEGIN();
+    RUN_TEST(test_init);
+    return UNITY_END();
+}

vendor/unity

@@ -0,0 +1 @@
+Subproject commit 0b92f9b960e4af9afc2b2d0918ce602111682e54