diff --git a/test/capi/capiLinearGradient.cpp b/test/capi/capiLinearGradient.cpp
index 63eb45fe..9244d6cf 100644
--- a/test/capi/capiLinearGradient.cpp
+++ b/test/capi/capiLinearGradient.cpp
@@ -28,6 +28,12 @@ TEST_CASE("Linear Gradient Basic Create", "[capiLinearGradient]")
 {
     Tvg_Gradient *gradient = tvg_linear_gradient_new();
     REQUIRE(gradient);
+
+    Tvg_Identifier id = TVG_IDENTIFIER_UNDEF;
+    REQUIRE(tvg_gradient_get_identifier(gradient, &id) == TVG_RESULT_SUCCESS);
+    REQUIRE(id == TVG_IDENTIFIER_LINEAR_GRAD);
+    REQUIRE(id != TVG_IDENTIFIER_RADIAL_GRAD);
+
     REQUIRE(tvg_gradient_del(gradient) == TVG_RESULT_SUCCESS);
 }
 
@@ -138,6 +144,24 @@ TEST_CASE("Linear Gradient duplicate", "[capiLinearGradient]")
     REQUIRE(tvg_paint_del(shape) == TVG_RESULT_SUCCESS);
 }
 
+TEST_CASE("Linear Gradient identifier", "[capiLinearGradient]")
+{
+    Tvg_Gradient* grad = tvg_linear_gradient_new();
+    REQUIRE(grad);
+
+    Tvg_Gradient* grad_copy = tvg_gradient_duplicate(grad);
+    REQUIRE(grad_copy);
+
+    Tvg_Identifier id = TVG_IDENTIFIER_UNDEF;
+    Tvg_Identifier id_copy = TVG_IDENTIFIER_UNDEF;
+
+    REQUIRE(tvg_gradient_get_identifier(nullptr, &id) == TVG_RESULT_INVALID_ARGUMENT);
+    REQUIRE(tvg_gradient_get_identifier(grad, nullptr) == TVG_RESULT_INVALID_ARGUMENT);
+    REQUIRE(tvg_gradient_get_identifier(grad, &id) == TVG_RESULT_SUCCESS);
+    REQUIRE(tvg_gradient_get_identifier(grad_copy, &id_copy) == TVG_RESULT_SUCCESS);
+    REQUIRE(id_copy == id);
+}
+
 TEST_CASE("Linear Gradient clear data", "[capiLinearGradient]")
 {
     Tvg_Paint *shape = tvg_shape_new();
diff --git a/test/capi/capiPaint.cpp b/test/capi/capiPaint.cpp
index cffc314e..4beedae8 100644
--- a/test/capi/capiPaint.cpp
+++ b/test/capi/capiPaint.cpp
@@ -208,6 +208,24 @@ TEST_CASE("Paint Dupliction", "[capiPaint]")
     REQUIRE(tvg_paint_del(paint_copy) == TVG_RESULT_SUCCESS);
 }
 
+TEST_CASE("Paint Identifier", "[capiPaint]")
+{
+    Tvg_Paint* paint = tvg_shape_new();
+    REQUIRE(paint);
+
+    Tvg_Paint* paint_copy = tvg_paint_duplicate(paint);
+    REQUIRE(paint_copy);
+
+    Tvg_Identifier id = TVG_IDENTIFIER_UNDEF;
+    Tvg_Identifier id_copy = TVG_IDENTIFIER_UNDEF;
+
+    REQUIRE(tvg_paint_get_identifier(nullptr, &id) == TVG_RESULT_INVALID_ARGUMENT);
+    REQUIRE(tvg_paint_get_identifier(paint, nullptr) == TVG_RESULT_INVALID_ARGUMENT);
+    REQUIRE(tvg_paint_get_identifier(paint, &id) == TVG_RESULT_SUCCESS);
+    REQUIRE(tvg_paint_get_identifier(paint_copy, &id_copy) == TVG_RESULT_SUCCESS);
+    REQUIRE(id_copy == id);
+}
+
 TEST_CASE("Paint Clip Path Composite Method", "[capiPaint]")
 {
     Tvg_Paint* paint = tvg_shape_new();
diff --git a/test/capi/capiPicture.cpp b/test/capi/capiPicture.cpp
index 2800e165..e2a31bc7 100644
--- a/test/capi/capiPicture.cpp
+++ b/test/capi/capiPicture.cpp
@@ -31,6 +31,12 @@ TEST_CASE("Load Raw file in Picture", "[capiPicture]")
     Tvg_Paint* picture = tvg_picture_new();
     REQUIRE(picture);
 
+    Tvg_Identifier id = TVG_IDENTIFIER_UNDEF;
+    REQUIRE(tvg_paint_get_identifier(picture, &id) == TVG_RESULT_SUCCESS);
+    REQUIRE(id == TVG_IDENTIFIER_PICTURE);
+    REQUIRE(id != TVG_IDENTIFIER_SHAPE);
+    REQUIRE(id != TVG_IDENTIFIER_SCENE);
+
     //Load Raw Data
     FILE* fp = fopen(TEST_DIR"/rawimage_200x300.raw", "r");
     if (!fp) return;
diff --git a/test/capi/capiRadialGradient.cpp b/test/capi/capiRadialGradient.cpp
index 53a4af33..756fbee0 100644
--- a/test/capi/capiRadialGradient.cpp
+++ b/test/capi/capiRadialGradient.cpp
@@ -28,6 +28,12 @@ TEST_CASE("Basic Create", "[capiRadialGradient]")
 {
     Tvg_Gradient *gradient = tvg_radial_gradient_new();
     REQUIRE(gradient);
+
+    Tvg_Identifier id = TVG_IDENTIFIER_UNDEF;
+    REQUIRE(tvg_gradient_get_identifier(gradient, &id) == TVG_RESULT_SUCCESS);
+    REQUIRE(id == TVG_IDENTIFIER_RADIAL_GRAD);
+    REQUIRE(id != TVG_IDENTIFIER_LINEAR_GRAD);
+
     REQUIRE(tvg_gradient_del(gradient) == TVG_RESULT_SUCCESS);
 }
 
diff --git a/test/capi/capiScene.cpp b/test/capi/capiScene.cpp
index 7c8125d5..387c9329 100644
--- a/test/capi/capiScene.cpp
+++ b/test/capi/capiScene.cpp
@@ -29,6 +29,12 @@ TEST_CASE("Create a Scene", "[capiScene]")
     Tvg_Paint* scene = tvg_scene_new();
     REQUIRE(scene);
 
+    Tvg_Identifier id = TVG_IDENTIFIER_UNDEF;
+    REQUIRE(tvg_paint_get_identifier(scene, &id) == TVG_RESULT_SUCCESS);
+    REQUIRE(id == TVG_IDENTIFIER_SCENE);
+    REQUIRE(id != TVG_IDENTIFIER_PICTURE);
+    REQUIRE(id != TVG_IDENTIFIER_SHAPE);
+
     REQUIRE(tvg_paint_del(scene) == TVG_RESULT_SUCCESS);
 }
 
diff --git a/test/capi/capiShape.cpp b/test/capi/capiShape.cpp
index 4eeb5920..1ba5d0e7 100644
--- a/test/capi/capiShape.cpp
+++ b/test/capi/capiShape.cpp
@@ -29,6 +29,12 @@ TEST_CASE("Multiple shapes", "[capiShapes]")
     Tvg_Paint* paint = tvg_shape_new();
     REQUIRE(paint);
 
+    Tvg_Identifier id = TVG_IDENTIFIER_UNDEF;
+    REQUIRE(tvg_paint_get_identifier(paint, &id) == TVG_RESULT_SUCCESS);
+    REQUIRE(id == TVG_IDENTIFIER_SHAPE);
+    REQUIRE(id != TVG_IDENTIFIER_SCENE);
+    REQUIRE(id != TVG_IDENTIFIER_PICTURE);
+
     REQUIRE(tvg_shape_append_rect(paint, 0, 0, 100, 100, 0, 0) == TVG_RESULT_SUCCESS);
     REQUIRE(tvg_shape_append_rect(paint, 0, 0, 100, 100, 50, 50) == TVG_RESULT_SUCCESS);
     REQUIRE(tvg_shape_append_rect(paint, 0, 0, 100, 100, 100, 100) == TVG_RESULT_SUCCESS);