Sparkline: Add test to make sure the Sparkline at least renders (#94880)

add test to make sure the sparkline at least renders

packages/grafana-ui/src/components/Sparkline/Sparkline.test.tsx

@@ -0,0 +1,30 @@
+import { render } from '@testing-library/react';
+
+import { createTheme, FieldSparkline, FieldType } from '@grafana/data';
+
+import { Sparkline } from './Sparkline';
+
+describe('Sparkline', () => {
+  it('should render without throwing an error', () => {
+    const sparkline: FieldSparkline = {
+      x: {
+        name: 'x',
+        values: [1679839200000, 1680444000000, 1681048800000, 1681653600000, 1682258400000],
+        type: FieldType.time,
+        config: {},
+      },
+      y: {
+        name: 'y',
+        values: [1, 2, 3, 4, 5],
+        type: FieldType.number,
+        config: {},
+        state: {
+          range: { min: 1, max: 5, delta: 1 },
+        },
+      },
+    };
+    expect(() =>
+      render(<Sparkline width={800} height={600} theme={createTheme()} sparkline={sparkline} />)
+    ).not.toThrow();
+  });
+});