add one more test case

Author: ktrz

test/write.spec.ts

@@ -1289,6 +1289,30 @@ describe.each(['https://github.com', 'https://github.enterprise.corp'])('writeBe
                     `This comment was automatically generated by [workflow](${serverUrl}/user/repo/actions?query=workflow%3AWorkflow%20name) using [github-action-benchmark](https://github.com/marketplace/actions/continuous-benchmark).`,
                 ],
             },
+            {
+                it: 'fails when exceeding the threshold - different units',
+                config: defaultCfg,
+                added: {
+                    commit: commit('current commit id'),
+                    date: lastUpdate,
+                    tool: 'cargo',
+                    benches: [bench('bench_fib_10', 0.21, '± 0.02', 'us/iter')], // Exceeds 2.0 threshold
+                },
+                gitServerUrl: serverUrl,
+                gitHistory: gitHistory(),
+                error: [
+                    '# :warning: **Performance Alert** :warning:',
+                    '',
+                    "Possible performance regression was detected for benchmark **'Test benchmark'**.",
+                    'Benchmark result of this commit is worse than the previous benchmark result exceeding threshold `2`.',
+                    '',
+                    '| Benchmark suite | Current: current commit id | Previous: prev commit id | Ratio |',
+                    '|-|-|-|-|',
+                    '| `bench_fib_10` | `210` ns/iter (`± 20`) | `100` ns/iter (`± 20`) | `2.10` |',
+                    '',
+                    `This comment was automatically generated by [workflow](${serverUrl}/user/repo/actions?query=workflow%3AWorkflow%20name) using [github-action-benchmark](https://github.com/marketplace/actions/continuous-benchmark).`,
+                ],
+            },
             {
                 it: 'sends commit message but does not raise an error when exceeding alert threshold but not exceeding failure threshold',
                 config: {