From 523cb97aff092c85c14374f3c7eab90334eee31d Mon Sep 17 00:00:00 2001
From: Oscar Kilhed <oscar.kilhed@grafana.com>
Date: Fri, 29 Sep 2023 04:19:10 +0200
Subject: [PATCH] Transformations: Fix bug with calculate field when using
 reduce and the all values calculation (#75684)

* fix reduce all fields

* Add test for issue
---
 .../src/transformations/fieldReducer.ts       |  2 +-
 .../transformers/calculateField.test.ts       | 27 +++++++++++++++++++
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/packages/grafana-data/src/transformations/fieldReducer.ts b/packages/grafana-data/src/transformations/fieldReducer.ts
index 7d7927792fc..8bd30767015 100644
--- a/packages/grafana-data/src/transformations/fieldReducer.ts
+++ b/packages/grafana-data/src/transformations/fieldReducer.ts
@@ -254,7 +254,7 @@ export const fieldReducers = new Registry<FieldReducerInfo>(() => [
     name: 'All values',
     description: 'Returns an array with all values',
     standard: false,
-    reduce: (field: Field) => ({ allValues: field.values }),
+    reduce: (field: Field) => ({ allValues: [...field.values] }),
   },
   {
     id: ReducerID.uniqueValues,
diff --git a/packages/grafana-data/src/transformations/transformers/calculateField.test.ts b/packages/grafana-data/src/transformations/transformers/calculateField.test.ts
index 28983031531..ba3a1ab1477 100644
--- a/packages/grafana-data/src/transformations/transformers/calculateField.test.ts
+++ b/packages/grafana-data/src/transformations/transformers/calculateField.test.ts
@@ -222,6 +222,33 @@ describe('calculateField transformer w/ timeseries', () => {
     });
   });
 
+  it('reduces all field', async () => {
+    const cfg = {
+      id: DataTransformerID.calculateField,
+      options: {
+        mode: CalculateFieldMode.ReduceRow,
+        reduce: { include: ['B', 'C'], reducer: ReducerID.allValues },
+        replaceFields: true,
+      },
+    };
+
+    await expect(transformDataFrame([cfg], [seriesBC])).toEmitValuesWith((received) => {
+      const data = received[0];
+      const filtered = data[0];
+      const rows = new DataFrameView(filtered).toArray();
+      expect(rows).toEqual([
+        {
+          'All values': [2, 3],
+          TheTime: 1000,
+        },
+        {
+          'All values': [200, 300],
+          TheTime: 2000,
+        },
+      ]);
+    });
+  });
+
   it('can add index field', async () => {
     const cfg = {
       id: DataTransformerID.calculateField,