From 3e08e784c580504e13e9d7c201c0c14b02f081a0 Mon Sep 17 00:00:00 2001
From: Paul Marbach <paul.marbach@grafana.com>
Date: Wed, 19 Nov 2025 16:17:58 -0500
Subject: [PATCH] some tests for this case

---
 .../components/Sparkline/Sparkline.test.tsx   | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/packages/grafana-ui/src/components/Sparkline/Sparkline.test.tsx b/packages/grafana-ui/src/components/Sparkline/Sparkline.test.tsx
index 9ad678132e9..2282d965a14 100644
--- a/packages/grafana-ui/src/components/Sparkline/Sparkline.test.tsx
+++ b/packages/grafana-ui/src/components/Sparkline/Sparkline.test.tsx
@@ -27,4 +27,48 @@ describe('Sparkline', () => {
       render(<Sparkline width={800} height={600} theme={createTheme()} sparkline={sparkline} />)
     ).not.toThrow();
   });
+
+  it('should ot throw an error if there is a single value', () => {
+    const sparkline: FieldSparkline = {
+      x: {
+        name: 'x',
+        values: [1679839200000],
+        type: FieldType.time,
+        config: {},
+      },
+      y: {
+        name: 'y',
+        values: [1],
+        type: FieldType.number,
+        config: {},
+        state: {
+          range: { min: 1, max: 1, delta: 0 },
+        },
+      },
+    };
+    expect(() =>
+      render(<Sparkline width={800} height={600} theme={createTheme()} sparkline={sparkline} />)
+    ).not.toThrow();
+  });
+
+  it('should ot throw an error if there are no values', () => {
+    const sparkline: FieldSparkline = {
+      x: {
+        name: 'x',
+        values: [],
+        type: FieldType.time,
+        config: {},
+      },
+      y: {
+        name: 'y',
+        values: [],
+        type: FieldType.number,
+        config: {},
+        state: {},
+      },
+    };
+    expect(() =>
+      render(<Sparkline width={800} height={600} theme={createTheme()} sparkline={sparkline} />)
+    ).not.toThrow();
+  });
 });