diff --git a/Makefile b/Makefile
index eac0f1f..bf4842c 100644
--- a/Makefile
+++ b/Makefile
@@ -36,6 +36,7 @@ DWM_SRC = \
 	src/dwm/xerror.c
 
 TEST_SRC = \
+	tests/geom_basic_geom.c \
 	tests/geom_position.c \
 	tests/geom_sizes.c
 
diff --git a/tests/geom_basic_geom.c b/tests/geom_basic_geom.c
new file mode 100644
index 0000000..de6a914
--- /dev/null
+++ b/tests/geom_basic_geom.c
@@ -0,0 +1,60 @@
+#include <assert.h>
+
+#include "../src/geom.h"
+
+static void test_create();
+static void test_init();
+static void test_create_from_args();
+static void test_init_from_args();
+
+void test() {
+	test_create();
+	test_init();
+	test_create_from_args();
+	test_init_from_args();
+}
+
+void test_create()
+{
+	const struct BasicGeom basic_geom = basic_geom_create();
+	assert(basic_geom.position.x == 0);
+	assert(basic_geom.position.y == 0);
+	assert(basic_geom.sizes.w == 0);
+	assert(basic_geom.sizes.h == 0);
+}
+
+void test_init()
+{
+	struct BasicGeom basic_geom = {
+		.position = { .x = 12, .y = 34 },
+		.sizes    = { .w = 56, .h = 68 },
+	};
+	basic_geom_init(&basic_geom);
+	assert(basic_geom.position.x == 0);
+	assert(basic_geom.position.y == 0);
+	assert(basic_geom.sizes.w == 0);
+	assert(basic_geom.sizes.h == 0);
+}
+
+void test_create_from_args()
+{
+	const struct BasicGeom basic_geom =
+		basic_geom_create_from_args(12, 34, 56, 78);
+	assert(basic_geom.position.x == 12);
+	assert(basic_geom.position.y == 34);
+	assert(basic_geom.sizes.w == 56);
+	assert(basic_geom.sizes.h == 78);
+}
+
+void test_init_from_args()
+{
+	struct BasicGeom basic_geom = {
+		.position = { .x = 0, .y = 0 },
+		.sizes    = { .w = 0, .h = 0 },
+	};
+	basic_geom_init_from_args(&basic_geom, 12, 34, 56, 78);
+	assert(basic_geom.position.x == 12);
+	assert(basic_geom.position.y == 34);
+	assert(basic_geom.sizes.w == 56);
+	assert(basic_geom.sizes.h == 78);
+}