diff --git a/packages/cli-kit/src/public/node/vendor/otel-js/utils/validators.test.ts b/packages/cli-kit/src/public/node/vendor/otel-js/utils/validators.test.ts
new file mode 100644
index 00000000000..bf41aaa305d
--- /dev/null
+++ b/packages/cli-kit/src/public/node/vendor/otel-js/utils/validators.test.ts
@@ -0,0 +1,24 @@
+import {isValidMetricName} from './validators.js'
+import {diag} from '@opentelemetry/api'
+import {describe, expect, test, vi} from 'vitest'
+
+describe('isValidMetricName', () => {
+  test('returns true for valid metric names', () => {
+    expect(isValidMetricName('valid_metric_name')).toBe(true)
+    expect(isValidMetricName('metric')).toBe(true)
+    expect(isValidMetricName('_metric')).toBe(true)
+    expect(isValidMetricName('METRIC_NAME')).toBe(true)
+  })
+
+  test('returns false and logs warning for invalid metric names', () => {
+    const diagSpy = vi.spyOn(diag, 'warn').mockImplementation(() => {})
+
+    expect(isValidMetricName('invalid-metric')).toBe(false)
+    expect(isValidMetricName('123metric')).toBe(false)
+    expect(isValidMetricName('metric.name')).toBe(false)
+    expect(isValidMetricName('metric@name')).toBe(false)
+    expect(isValidMetricName('metric name')).toBe(false)
+
+    expect(diagSpy).toHaveBeenCalled()
+  })
+})