diff --git a/test/src/test_quat.h b/test/src/test_quat.h
index 5302664..90e4bb6 100644
--- a/test/src/test_quat.h
+++ b/test/src/test_quat.h
@@ -655,3 +655,55 @@ TEST_IMPL(GLM_PREFIX, quat_mat3t) {
 
   TEST_SUCCESS
 }
+
+TEST_IMPL(GLM_PREFIX, quat_lerp) {
+  versor v1 = {-100.0f, -200.0f, -10.0f, -10.0f};
+  versor v2 = {100.0f, 200.0f, 10.0f, 10.0f};
+  versor v3;
+
+  GLM(vec4_lerp)(v1, v2, 0.5f, v3);
+  ASSERT(test_eq(v3[0], 0.0f))
+  ASSERT(test_eq(v3[1], 0.0f))
+  ASSERT(test_eq(v3[2], 0.0f))
+  ASSERT(test_eq(v3[3], 0.0f))
+
+  GLM(vec4_lerp)(v1, v2, 0.75f, v3);
+  ASSERT(test_eq(v3[0], 50.0f))
+  ASSERT(test_eq(v3[1], 100.0f))
+  ASSERT(test_eq(v3[2], 5.0f))
+  ASSERT(test_eq(v3[3], 5.0f))
+
+  TEST_SUCCESS
+}
+
+TEST_IMPL(GLM_PREFIX, quat_lerpc) {
+  versor v1 = {-100.0f, -200.0f, -10.0f, -10.0f};
+  versor v2 = {100.0f, 200.0f, 10.0f, 10.0f};
+  versor v3;
+
+  GLM(vec4_lerpc)(v1, v2, 0.5f, v3);
+  ASSERT(test_eq(v3[0], 0.0f))
+  ASSERT(test_eq(v3[1], 0.0f))
+  ASSERT(test_eq(v3[2], 0.0f))
+  ASSERT(test_eq(v3[3], 0.0f))
+
+  GLM(vec4_lerpc)(v1, v2, 0.75f, v3);
+  ASSERT(test_eq(v3[0], 50.0f))
+  ASSERT(test_eq(v3[1], 100.0f))
+  ASSERT(test_eq(v3[2], 5.0f))
+  ASSERT(test_eq(v3[3], 5.0f))
+
+  GLM(vec4_lerpc)(v1, v2, -1.75f, v3);
+  ASSERT(test_eq(v3[0], -100.0f))
+  ASSERT(test_eq(v3[1], -200.0f))
+  ASSERT(test_eq(v3[2], -10.0f))
+  ASSERT(test_eq(v3[3], -10.0f))
+
+  GLM(vec4_lerpc)(v1, v2, 1.75f, v3);
+  ASSERT(test_eq(v3[0], 100.0f))
+  ASSERT(test_eq(v3[1], 200.0f))
+  ASSERT(test_eq(v3[2], 10.0f))
+  ASSERT(test_eq(v3[3], 10.0f))
+
+  TEST_SUCCESS
+}
diff --git a/test/tests.h b/test/tests.h
index ebc48f6..570e6a6 100644
--- a/test/tests.h
+++ b/test/tests.h
@@ -156,6 +156,8 @@ TEST_DECLARE(glm_quat_mat4)
 TEST_DECLARE(glm_quat_mat4t)
 TEST_DECLARE(glm_quat_mat3)
 TEST_DECLARE(glm_quat_mat3t)
+TEST_DECLARE(glm_quat_lerp)
+TEST_DECLARE(glm_quat_lerpc)
 
 TEST_DECLARE(glmc_quat_identity)
 TEST_DECLARE(glmc_quat_identity_array)
@@ -182,6 +184,8 @@ TEST_DECLARE(glmc_quat_mat4)
 TEST_DECLARE(glmc_quat_mat4t)
 TEST_DECLARE(glmc_quat_mat3)
 TEST_DECLARE(glmc_quat_mat3t)
+TEST_DECLARE(glmc_quat_lerp)
+TEST_DECLARE(glmc_quat_lerpc)
 
 /* bezier */
 TEST_DECLARE(bezier)
@@ -639,6 +643,8 @@ TEST_LIST {
   TEST_ENTRY(glm_quat_mat4t)
   TEST_ENTRY(glm_quat_mat3)
   TEST_ENTRY(glm_quat_mat3t)
+  TEST_ENTRY(glm_quat_lerp)
+  TEST_ENTRY(glm_quat_lerpc)
 
   TEST_ENTRY(glmc_quat_identity)
   TEST_ENTRY(glmc_quat_identity_array)
@@ -665,6 +671,8 @@ TEST_LIST {
   TEST_ENTRY(glmc_quat_mat4t)
   TEST_ENTRY(glmc_quat_mat3)
   TEST_ENTRY(glmc_quat_mat3t)
+  TEST_ENTRY(glmc_quat_lerp)
+  TEST_ENTRY(glmc_quat_lerpc)
 
   /* bezier */
   TEST_ENTRY(bezier)