diff --git a/Makefile.am b/Makefile.am
index d775a52..4a022fb 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -151,7 +151,8 @@ test_tests_SOURCES=\
     test/src/test_vec3.c \
     test/src/test_mat3.c \
     test/src/test_affine.c \
-    test/src/test_bezier.c
+    test/src/test_bezier.c \
+    test/src/test_struct.c
 
 pkgconfig_DATA=cglm.pc
 
diff --git a/test/src/test_struct.c b/test/src/test_struct.c
new file mode 100644
index 0000000..3423ace
--- /dev/null
+++ b/test/src/test_struct.c
@@ -0,0 +1,71 @@
+#include "test_common.h"
+
+TEST_IMPL(mat3s_identity_init) {
+  mat3s mat3_identity   = GLMS_MAT3_IDENTITY_INIT;
+  mat3  mat3_identity_a =  GLM_MAT3_IDENTITY_INIT;
+  test_assert_mat3_eq(mat3_identity.raw, mat3_identity_a);
+  TEST_SUCCESS
+}
+
+TEST_IMPL(mat3s_zero_init) {
+  mat3s mat3_zero   = GLMS_MAT3_ZERO_INIT;
+  mat3  mat3_zero_a =  GLM_MAT3_ZERO_INIT;
+  test_assert_mat3_eq(mat3_zero.raw, mat3_zero_a);
+  TEST_SUCCESS
+}
+
+TEST_IMPL(mat4s_identity_init) {
+  mat4s mat4_identity   = GLMS_MAT4_IDENTITY_INIT;
+  mat4  mat4_identity_a =  GLM_MAT4_IDENTITY_INIT;
+  test_assert_mat4_eq(mat4_identity.raw, mat4_identity_a);
+  TEST_SUCCESS
+}
+
+TEST_IMPL(mat4s_zero_init) {
+  mat4s mat4_zero   = GLMS_MAT4_ZERO_INIT;
+  mat4  mat4_zero_a =  GLM_MAT4_ZERO_INIT;
+  test_assert_mat4_eq(mat4_zero.raw, mat4_zero_a);
+  TEST_SUCCESS
+}
+
+TEST_IMPL(quats_zero_init) {
+  versors quat_zero   = GLMS_QUAT_IDENTITY_INIT;
+  versor  quat_zero_a =  GLM_QUAT_IDENTITY_INIT;
+  test_assert_quat_eq(quat_zero.raw, quat_zero_a);
+  TEST_SUCCESS
+}
+
+TEST_IMPL(vec3s_one_init) {
+  vec3s vec3_one   = GLMS_VEC3_ONE_INIT;
+  vec3  vec3_one_a =  GLM_VEC3_ONE_INIT;
+  test_assert_vec3_eq(vec3_one.raw, vec3_one_a);
+  TEST_SUCCESS
+}
+
+TEST_IMPL(vec3s_zero_init) {
+  vec3s vec3_zero   = GLMS_VEC3_ZERO_INIT;
+  vec3  vec3_zero_a =  GLM_VEC3_ZERO_INIT;
+  test_assert_vec3_eq(vec3_zero.raw, vec3_zero_a);
+  TEST_SUCCESS
+}
+
+TEST_IMPL(vec4s_black_init) {
+  vec4s vec4_black   = GLMS_VEC4_BLACK_INIT;
+  vec4  vec4_black_a =  GLM_VEC4_BLACK_INIT;
+  test_assert_vec4_eq(vec4_black.raw, vec4_black_a);
+  TEST_SUCCESS
+}
+
+TEST_IMPL(vec4s_one_init) {
+  vec4s vec4_one   = GLMS_VEC4_ONE_INIT;
+  vec4  vec4_one_a =  GLM_VEC4_ONE_INIT;
+  test_assert_vec4_eq(vec4_one.raw, vec4_one_a);
+  TEST_SUCCESS
+}
+
+TEST_IMPL(vec4s_zero_init) {
+  vec4s vec4_zero   = GLMS_VEC4_ZERO_INIT;
+  vec4  vec4_zero_a =  GLM_VEC4_ZERO_INIT;
+  test_assert_vec4_eq(vec4_zero.raw, vec4_zero_a);
+  TEST_SUCCESS
+}
diff --git a/test/tests.h b/test/tests.h
index 2193b84..3ace6bf 100644
--- a/test/tests.h
+++ b/test/tests.h
@@ -504,6 +504,19 @@ TEST_DECLARE(glmc_vec4_fract)
 TEST_DECLARE(glmc_vec4_hadd)
 TEST_DECLARE(glmc_vec4_sqrt)
 
+/* structs */
+
+TEST_DECLARE(mat3s_identity_init)
+TEST_DECLARE(mat3s_zero_init)
+TEST_DECLARE(mat4s_identity_init)
+TEST_DECLARE(mat4s_zero_init)
+TEST_DECLARE(quats_zero_init)
+TEST_DECLARE(vec3s_one_init)
+TEST_DECLARE(vec3s_zero_init)
+TEST_DECLARE(vec4s_black_init)
+TEST_DECLARE(vec4s_one_init)
+TEST_DECLARE(vec4s_zero_init)
+
 /*****************************************************************************/
 
 TEST_LIST {
@@ -996,6 +1009,18 @@ TEST_LIST {
   TEST_ENTRY(glmc_vec4_fract)
   TEST_ENTRY(glmc_vec4_hadd)
   TEST_ENTRY(glmc_vec4_sqrt)
+
+  /* structs */
+  TEST_ENTRY(mat3s_identity_init)
+  TEST_ENTRY(mat3s_zero_init)
+  TEST_ENTRY(mat4s_identity_init)
+  TEST_ENTRY(mat4s_zero_init)
+  TEST_ENTRY(quats_zero_init)
+  TEST_ENTRY(vec3s_one_init)
+  TEST_ENTRY(vec3s_zero_init)
+  TEST_ENTRY(vec4s_black_init)
+  TEST_ENTRY(vec4s_one_init)
+  TEST_ENTRY(vec4s_zero_init)
 };
 
 #endif /* tests_h */