diff --git a/CMakeLists.txt b/CMakeLists.txt
index d820abb..fcc1e9a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -59,6 +59,7 @@ include_directories(
   "${PROJECT_SOURCE_DIR}/dependencies/SDL2_ttf/include"
   "${PROJECT_SOURCE_DIR}/dependencies/minIni/dev"
   "${PROJECT_SOURCE_DIR}/dependencies/bdd-for-c"
+  "${PROJECT_SOURCE_DIR}/dependencies/bdd-for-c-mocks"
   "${PROJECT_SOURCE_DIR}/dependencies/portmidi/pm_common"
   "${PROJECT_SOURCE_DIR}/dependencies/spine-runtimes/spine-c/spine-c/include"
   "${PROJECT_SOURCE_DIR}/dependencies/getopt-for-windows"
@@ -191,8 +192,7 @@ endif()
 add_executable(
   game-test-geometry
     dependencies/bdd-for-c/bdd-for-c.h
-    src/packages/test/IZ_mock.h
-    src/packages/test/IZ_test.h
+    dependencies/bdd-for-c-mocks/bdd-for-c-mocks.h
 
     src/packages/game/geometry/IZ_rect.h
     src/packages/game/geometry/IZ_rect.c
@@ -204,8 +204,7 @@ add_executable(
 add_executable(
   game-test-input
     dependencies/bdd-for-c/bdd-for-c.h
-    src/packages/test/IZ_mock.h
-    src/packages/test/IZ_test.h
+    dependencies/bdd-for-c-mocks/bdd-for-c-mocks.h
 
     __mocks__/dependencies/minIni/minIni.mock.h
     __mocks__/dependencies/SDL2/SDL_keyboard.mock.h
@@ -234,11 +233,12 @@ add_executable(
 add_executable(
   game-test-output
     dependencies/bdd-for-c/bdd-for-c.h
-    src/packages/test/IZ_mock.h
-    src/packages/test/IZ_test.h
+    dependencies/bdd-for-c-mocks/bdd-for-c-mocks.h
+
     __mocks__/dependencies/minIni/minIni.mock.h
     __mocks__/dependencies/SDL2/SDL_stdinc.mock.h
     __mocks__/dependencies/SDL2/SDL_render.mock.h
+
     src/packages/config/IZ_config.h
     src/packages/game/output/video/IZ_video.h
     src/packages/game/output/video/IZ_video.c
@@ -248,21 +248,25 @@ add_executable(
 add_executable(
   game-test-memory
     dependencies/bdd-for-c/bdd-for-c.h
-    src/packages/test/IZ_mock.h
-    src/packages/test/IZ_test.h
+    dependencies/bdd-for-c-mocks/bdd-for-c-mocks.h
+
     src/packages/timer/IZ_timer.h
     src/packages/timer/IZ_timer.c
+
     src/packages/stdinc/IZ_stdlib.h
     __mocks__/src/packages/stdinc/IZ_stdlib.mock.h
+
     src/packages/stdinc/IZ_string.h
     __mocks__/src/packages/stdinc/IZ_string.mock.h
+
     src/packages/log/IZ_log.h
     __mocks__/src/packages/log/IZ_log.mock.h
+
+    src/packages/game/data/IZ_list.c
+    src/packages/game/data/IZ_list.h
     src/packages/game/memory/IZ_pool.h
     src/packages/game/memory/IZ_pool.c
     src/packages/game/memory/memory.test.c
-    src/packages/game/data/IZ_list.c
-    src/packages/game/data/IZ_list.h
 )
 
 target_link_libraries(
@@ -274,13 +278,22 @@ target_link_libraries(
 add_executable(
   game-test-data
     dependencies/bdd-for-c/bdd-for-c.h
-    src/packages/test/IZ_mock.h
-    src/packages/test/IZ_test.h
+    dependencies/bdd-for-c-mocks/bdd-for-c-mocks.h
+
+    src/packages/stdinc/IZ_stdlib.h
+    __mocks__/src/packages/stdinc/IZ_stdlib.mock.h
+
     src/packages/game/data/IZ_list.h
     src/packages/game/data/IZ_list.c
     src/packages/game/data/data.test.c
 )
 
+target_link_libraries(
+  game-test-data
+    SDL2main
+    SDL2
+)
+
 add_executable(
   server
     dependencies/sqlite/sqlite3.h
diff --git a/__mocks__/dependencies/SDL2/SDL_joystick.mock.h b/__mocks__/dependencies/SDL2/SDL_joystick.mock.h
index 52f96d3..7dd5658 100644
--- a/__mocks__/dependencies/SDL2/SDL_joystick.mock.h
+++ b/__mocks__/dependencies/SDL2/SDL_joystick.mock.h
@@ -1,8 +1,8 @@
 #ifndef SDL_JOYSTICK_MOCK_H
 #define SDL_JOYSTICK_MOCK_H
 
+#include <bdd-for-c-mocks.h>
 #include "../../../src/packages/common/IZ_common.h"
-#include "../../../src/packages/test/IZ_test.h"
 
 typedef struct _SDL_Joystick {} SDL_Joystick;
 
diff --git a/__mocks__/dependencies/SDL2/SDL_keyboard.mock.h b/__mocks__/dependencies/SDL2/SDL_keyboard.mock.h
index 05dc405..9059314 100644
--- a/__mocks__/dependencies/SDL2/SDL_keyboard.mock.h
+++ b/__mocks__/dependencies/SDL2/SDL_keyboard.mock.h
@@ -1,8 +1,8 @@
 #ifndef SDL_KEYBOARD_MOCK_H
 #define SDL_KEYBOARD_MOCK_H
 
+#include <bdd-for-c-mocks.h>
 #include "../../../src/packages/common/IZ_common.h"
-#include "../../../src/packages/test/IZ_test.h"
 
 mock(SDL_GetKeyName) const char* SDL_GetKeyName(i32 key) {
 	mock_return(SDL_GetKeyName) "";
diff --git a/__mocks__/dependencies/SDL2/SDL_render.mock.h b/__mocks__/dependencies/SDL2/SDL_render.mock.h
index e977187..54314fe 100644
--- a/__mocks__/dependencies/SDL2/SDL_render.mock.h
+++ b/__mocks__/dependencies/SDL2/SDL_render.mock.h
@@ -1,8 +1,8 @@
 #ifndef SDL_RENDER_MOCK_H
 #define SDL_RENDER_MOCK_H
 
+#include <bdd-for-c-mocks.h>
 #include "../../../src/packages/common/IZ_common.h"
-#include "../../../src/packages/test/IZ_test.h"
 
 typedef struct SDL_Renderer SDL_Renderer;
 
diff --git a/__mocks__/dependencies/SDL2/SDL_stdinc.mock.h b/__mocks__/dependencies/SDL2/SDL_stdinc.mock.h
index 0a0cbd5..ce1f81d 100644
--- a/__mocks__/dependencies/SDL2/SDL_stdinc.mock.h
+++ b/__mocks__/dependencies/SDL2/SDL_stdinc.mock.h
@@ -2,8 +2,8 @@
 #define SDL_STDINC_MOCK_H
 
 #include <string.h>
+#include <bdd-for-c-mocks.h>
 #include "../../../src/packages/common/IZ_common.h"
-#include "../../../src/packages/test/IZ_test.h"
 
 mock(SDL_memcpy) void* SDL_memcpy(void* dst, const void* src, size_t len) {
 	mock_return(SDL_memcpy) memcpy(dst, src, len);
diff --git a/__mocks__/dependencies/minIni/minIni.mock.h b/__mocks__/dependencies/minIni/minIni.mock.h
index c90171d..1df5f06 100644
--- a/__mocks__/dependencies/minIni/minIni.mock.h
+++ b/__mocks__/dependencies/minIni/minIni.mock.h
@@ -1,8 +1,8 @@
 #ifndef MININI_MOCK_H
 #define MININI_MOCK_H
 
+#include <bdd-for-c-mocks.h>
 #include "../../../src/packages/common/IZ_common.h"
-#include "../../../src/packages/test/IZ_test.h"
 
 mock(ini_getl) long ini_getl(const char *Section, const char *Key, long DefValue, const char *Filename) {
 	mock_return(ini_getl) DefValue;
diff --git a/__mocks__/src/packages/log/IZ_log.mock.h b/__mocks__/src/packages/log/IZ_log.mock.h
index 2a71bb3..b212f82 100644
--- a/__mocks__/src/packages/log/IZ_log.mock.h
+++ b/__mocks__/src/packages/log/IZ_log.mock.h
@@ -1,7 +1,7 @@
 #ifndef IZ_LOG_MOCK_H
 #define IZ_LOG_MOCK_H
 
-#include "../../../src/packages/test/IZ_mock.h"
+#include <bdd-for-c-mocks.h>
 #include "../../../src/packages/log/IZ_log.h"
 
 mock_modes(IZ_LogInfo) {
diff --git a/__mocks__/src/packages/stdinc/IZ_stdlib.mock.h b/__mocks__/src/packages/stdinc/IZ_stdlib.mock.h
index 5d5824a..06b2115 100644
--- a/__mocks__/src/packages/stdinc/IZ_stdlib.mock.h
+++ b/__mocks__/src/packages/stdinc/IZ_stdlib.mock.h
@@ -1,8 +1,8 @@
 #ifndef IZ_STDLIB_MOCK_C
 #define IZ_STDLIB_MOCK_C
 
+#include <bdd-for-c-mocks.h>
 #include <SDL_stdinc.h>
-#include "../../../../src/packages/test/IZ_mock.h"
 
 mock(IZ_malloc) void* IZ_malloc(size_t size) {
 	mock_return(IZ_malloc) SDL_malloc(size);
diff --git a/__mocks__/src/packages/stdinc/IZ_string.mock.h b/__mocks__/src/packages/stdinc/IZ_string.mock.h
index bb75207..47eb80f 100644
--- a/__mocks__/src/packages/stdinc/IZ_string.mock.h
+++ b/__mocks__/src/packages/stdinc/IZ_string.mock.h
@@ -1,7 +1,7 @@
 #ifndef IZ_STRING_MOCK_C
 #define IZ_STRING_MOCK_C
 
-#include "../../../../src/packages/test/IZ_mock.h"
+#include <bdd-for-c-mocks.h>
 
 mock(IZ_memset) void* IZ_memset(void* dst, int c, size_t len) {
 	mock_return(IZ_memset) 0;
diff --git a/dependencies.txt b/dependencies.txt
index 0f69ae5..2b0ddc8 100644
--- a/dependencies.txt
+++ b/dependencies.txt
@@ -9,3 +9,4 @@ https://github.com/Chunde/getopt-for-windows
 https://libwebsockets.org/repo/libwebsockets
 https://github.com/openssl/openssl
 https://www.sqlite.org/download.html (use SQLite amalgamated source code, unpack into `sqlite` directory)
+https://code.modal.sh/TheoryOfNekomata/bdd-for-c-mocks
diff --git a/src/packages/game/data/data.test.c b/src/packages/game/data/data.test.c
index 4ecd469..90be2d7 100644
--- a/src/packages/game/data/data.test.c
+++ b/src/packages/game/data/data.test.c
@@ -1,6 +1,6 @@
-#include "../../test/IZ_test.h"
+#include <bdd-for-c.h>
 #include "../../common/IZ_common.h"
-#include "../../../../__mocks__/dependencies/SDL2/SDL_stdinc.mock.h"
+#include "../../../../__mocks__/src/packages/stdinc/IZ_stdlib.mock.h"
 #include "IZ_list.h"
 
 bool NodeExists(IZ_ListNode** node, u64 _index, IZ_List* list) {
@@ -46,15 +46,15 @@ spec("data") {
 			}
 
 			after_each() {
-				mock_reset(SDL_free);
+				mock_reset(IZ_free);
 			}
 
 			it("removes all nodes from the list") {
-				mock_set_expected_calls(SDL_free, 3);
+				mock_set_expected_calls(IZ_free, 3);
 				IZ_ListTeardown(&list);
 
 				check(
-					mock_get_expected_calls(SDL_free) == mock_get_actual_calls(SDL_free),
+					mock_get_expected_calls(IZ_free) == mock_get_actual_calls(IZ_free),
 					"Deallocator function call count mismatch."
 				);
 			}
@@ -80,7 +80,7 @@ spec("data") {
 			}
 
 			after_each() {
-				mock_reset(SDL_malloc);
+				mock_reset(IZ_malloc);
 			}
 
 			after_each() {
@@ -97,7 +97,7 @@ spec("data") {
 
 				check(*((u64*) list.root->value) == 69420u, "Node not properly appended.");
 				check(
-					mock_is_called(SDL_malloc),
+					mock_is_called(IZ_malloc),
 					"Allocator function not called."
 				);
 				check(list.length == 1, "Length mismatch.");
@@ -110,7 +110,7 @@ spec("data") {
 
 				check(*((u64*) list2.root->next->value) == 42069u, "Node not properly appended.");
 				check(
-					mock_is_called(SDL_malloc),
+					mock_is_called(IZ_malloc),
 					"Allocator function not called."
 				);
 				check(list2.length == 2, "Length mismatch.");
@@ -160,14 +160,14 @@ spec("data") {
 			}
 
 			after_each() {
-				mock_reset(SDL_free);
+				mock_reset(IZ_free);
 			}
 
 			it("removes first node satisfying the filter condition") {
 				IZ_ListDeleteFirstNode(&list, NodeExists);
 
 				check(
-					mock_is_called(SDL_free),
+					mock_is_called(IZ_free),
 					"Deallocator function not called."
 				);
 
diff --git a/src/packages/game/geometry/geometry.test.c b/src/packages/game/geometry/geometry.test.c
index fd6f59c..2c08769 100644
--- a/src/packages/game/geometry/geometry.test.c
+++ b/src/packages/game/geometry/geometry.test.c
@@ -1,4 +1,4 @@
-#include "../../test/IZ_test.h"
+#include <bdd-for-c.h>
 #include "IZ_vector2d.h"
 #include "IZ_rect.h"
 
diff --git a/src/packages/test/IZ_mock.h b/src/packages/test/IZ_mock.h
deleted file mode 100644
index 4d45815..0000000
--- a/src/packages/test/IZ_mock.h
+++ /dev/null
@@ -1,28 +0,0 @@
-#ifndef IZ_MOCK_H
-#define IZ_MOCK_H
-
-#define mock_call_count_t unsigned char
-
-#define mock(X) static mock_call_count_t actual_##X = 0;
-
-#define mock_mode_t unsigned char
-
-#define mock_modes(X) static mock_mode_t current_mock_mode_##X = 0; enum mock_modes_##X
-
-#define mock_mode(X, Y) current_mock_mode_##X = Y
-
-#define mock_mode_if(X, Y) if (current_mock_mode_##X == Y)
-
-#define mock_return(X) actual_##X += 1; return
-
-#define mock_reset(X) actual_##X = 0
-
-#define mock_get_actual_calls(X) (mock_call_count_t) actual_##X
-
-#define mock_set_expected_calls(X, Y) static const mock_call_count_t expected_##X = Y
-
-#define mock_get_expected_calls(X) (mock_call_count_t) expected_##X
-
-#define mock_is_called(X) mock_get_actual_calls(X) > 0
-
-#endif
diff --git a/src/packages/test/IZ_test.h b/src/packages/test/IZ_test.h
deleted file mode 100644
index 9e938ee..0000000
--- a/src/packages/test/IZ_test.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef IZ_TEST_H
-#define IZ_TEST_H
-
-#include <bdd-for-c.h>
-
-#include "IZ_mock.h"
-
-#endif
diff --git a/src/packages/test/README.md b/src/packages/test/README.md
deleted file mode 100644
index 0e5e6d7..0000000
--- a/src/packages/test/README.md
+++ /dev/null
@@ -1,126 +0,0 @@
-# bdd-for-c-mocks
-
-## Usage
-
-Suppose you have a library `lib` and an application `app` that uses `lib`. You want to test `app` and you want to mock
-`lib`'s functions. You can do this by creating a mock header file for `lib` and including it in `app`'s test file.
-
-### `lib.h`
-
-This is a reference header file for `lib`. The implementation should be abstracted from us, and we want to be able to
-mock its behavior.
-
-```c
-#ifndef LIB_H
-#define LIB_H
-
-int add(int a, int b);
-
-void alert();
-
-#endif
-```
-
-### `lib.mock.h`
-
-We define mocked behavior for `lib`. `bdd-for-c-mocks` offers a capability to force mock behavior through modes. Note
-that all mode behaviors should be implemented already. 
-
-```c
-#ifndef LIB_MOCK_H
-#define LIB_MOCK_H
-
-#include <bdd-for-c-mocks.h>
-
-mock_modes(add) {
-	ADD_RETURNS_SUM = 0,
-	ADD_RETURNS_CONSTANT_VALUE,
-};
-
-mock(add) int add(int a, int b) {
-	mock_mode_if(add, ADD_RETURNS_SUM) {
-		// suppose we want to test normal behavior
-		mock_return(add) a + b;
-	} else mock_mode_if(add, ADD_RETURNS_CONSTANT_VALUE) {
-		// maybe an edge case?
-		mock_return(add) 5;
-	}
-}
-
-mock(alert) void alert() {
-	mock_return(alert);
-}
-
-#endif
-```
-
-### `app.h`
-```c
-#ifndef APP_H
-#define APP_H
-
-void math();
-
-#endif
-```
-
-### `app.c`
-
-This is a reference implementation of `app`. We want to test the invocations done inside the `math()` function.
-
-```c
-#include "lib.h"
-#include "app.h"
-
-void math() {
-	int result_a = add(1, 2);
-	int result_b = add(3, 4);
-	if (result_a == result_b) {
-		// this is the edge case!
-		// alert() should be called if the add values are the same
-		alert();
-	}
-}
-```
-
-### `app.test.c`
-
-This is the test file for `app`. It includes `lib.mock.h` instead of `lib.c`. `lib.h` should still be linked because we
-are sharing the original function declarations.
-
-```c
-#include <bdd-for-c.h>
-#include "app.h"
-
-spec("app") {
-	describe("math") {
-		after_each() {
-			mock_reset(add);
-		}
-		
-		after_each() {
-			mock_reset(alert);
-		}
-		
-		it("calls add") {
-			mock_mode(add, ADD_RETURNS_SUM);
-			mock_set_excepted_calls(math, 2);
-			
-			math();
-			
-			check(
-				mock_get_expected_calls(math) == mock_get_actual_calls(math),
-				"add was not called."
-			);
-		}
-		
-		it("calls alert when calls from add return the same values") {
-			mock_mode(add, ADD_RETURNS_CONSTANT_VALUE);
-	
-			math();
-			check(mock_is_called(alert), "alert was not called.");
-		}
-	}
-}
-
-```