diff --git a/superset-frontend/temporary_superset_ui/superset-ui-plugins-deckgl/packages/superset-ui-legacy-preset-chart-deckgl/test/utils/colors.test.js b/superset-frontend/temporary_superset_ui/superset-ui-plugins-deckgl/packages/superset-ui-legacy-preset-chart-deckgl/test/utils/colors.test.js
new file mode 100644
index 0000000000..9fc24d2c75
--- /dev/null
+++ b/superset-frontend/temporary_superset_ui/superset-ui-plugins-deckgl/packages/superset-ui-legacy-preset-chart-deckgl/test/utils/colors.test.js
@@ -0,0 +1,7 @@
+import { hexToRGB } from '../../src/utils/colors';
+
+describe('colors', () => {
+  it('hexToRGB()', () => {
+    expect(hexToRGB('#ffffff')).toEqual([255, 255, 255, 255]);
+  });
+});