Add more unit tests for color package (#28)

* add more unit tests for color package

* revert file name

* rename

superset-frontend/temporary_superset_ui/superset-ui/packages/superset-ui-color/test/ColorScheme.test.js

@@ -0,0 +1,15 @@
+import ColorScheme from '../src/ColorScheme';
+
+describe('ColorScheme', () => {
+  describe('new ColorScheme()', () => {
+    it('requires name and color', () => {
+      expect(() => new ColorScheme()).toThrow();
+      expect(() => new ColorScheme({ name: 'test' })).toThrow();
+      expect(() => new ColorScheme({ colors: ['red', 'blue'] })).toThrow();
+    });
+    it('returns an instance of ColorScheme', () => {
+      const scheme = new ColorScheme({ name: 'test', colors: ['red', 'blue'] });
+      expect(scheme).toBeInstanceOf(ColorScheme);
+    });
+  });
+});