From 4a45e8d2e79023615e5c5a3ea4b1c6a5e5cf963f Mon Sep 17 00:00:00 2001
From: =?utf8?q?J=C3=A9r=C3=B4me=20Benoit?= <jerome.benoit@sap.com>
Date: Tue, 9 May 2023 00:26:57 +0200
Subject: [PATCH] fix: handle empty data set in median computation
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Signed-off-by: Jérôme Benoit <jerome.benoit@sap.com>
---
 src/utils.ts        | 3 +++
 tests/utils.test.js | 1 +
 2 files changed, 4 insertions(+)

diff --git a/src/utils.ts b/src/utils.ts
index c6e78ab5..403fed95 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -22,6 +22,9 @@ export const DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS: WorkerChoiceStrategyOptions
  * @returns The median of the given data set.
  */
 export const median = (dataSet: number[]): number => {
+  if (Array.isArray(dataSet) && dataSet.length === 0) {
+    return 0
+  }
   if (Array.isArray(dataSet) && dataSet.length === 1) {
     return dataSet[0]
   }
diff --git a/tests/utils.test.js b/tests/utils.test.js
index eb0e7b15..21a6a7c4 100644
--- a/tests/utils.test.js
+++ b/tests/utils.test.js
@@ -3,6 +3,7 @@ const { isPlainObject, median } = require('../lib/utils')
 
 describe('Utils test suite', () => {
   it('Verify median computation', () => {
+    expect(median([])).toBe(0)
     const array0 = [0.08]
     expect(median(array0)).toBe(0.08)
     const array1 = [0.25, 4.75, 3.05, 6.04, 1.01, 2.02, 5.03]
-- 
2.34.1