From 58ee883cef040f82e336e3519f71f3eeac1b8a62 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Sat, 14 Feb 2026 22:36:02 +0000
Subject: [PATCH 1/3] Initial plan


From 63a5c04f1652af21e031807bffba089e7fc5724f Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Sat, 14 Feb 2026 22:42:02 +0000
Subject: [PATCH 2/3] Add MySQL 8.4 to test matrix with authentication
 configuration

Co-authored-by: swissspidy <841956+swissspidy@users.noreply.github.com>
---
 .github/workflows/reusable-testing.yml | 38 +++++++++++++++++++++++++-
 1 file changed, 37 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/reusable-testing.yml b/.github/workflows/reusable-testing.yml
index 688ada6..5088983 100644
--- a/.github/workflows/reusable-testing.yml
+++ b/.github/workflows/reusable-testing.yml
@@ -118,6 +118,11 @@ jobs:
               "wp": "latest",
               "mysql": "mysql-8.0"
             },
+            {
+              "php": "8.3",
+              "wp": "latest",
+              "mysql": "mysql-8.4"
+            },
             {
               "php": "8.3",
               "wp": "latest",
@@ -134,6 +139,11 @@ jobs:
               "wp": "latest",
               "mysql": "mysql-8.0"
             },
+            {
+              "php": "8.4",
+              "wp": "latest",
+              "mysql": "mysql-8.4"
+            },
             {
               "php": "8.4",
               "wp": "latest",
@@ -151,6 +161,11 @@ jobs:
               "mysql": "mysql-8.0",
               "coverage": true
             },
+            {
+              "php": "8.5",
+              "wp": "latest",
+              "mysql": "mysql-8.4"
+            },
             {
               "php": "8.5",
               "wp": "latest",
@@ -212,6 +227,11 @@ jobs:
               "wp": "trunk",
               "mysql": "mysql-8.0"
             },
+            {
+              "php": "8.3",
+              "wp": "trunk",
+              "mysql": "mysql-8.4"
+            },
             {
               "php": "8.3",
               "wp": "trunk",
@@ -228,6 +248,11 @@ jobs:
               "wp": "trunk",
               "mysql": "mysql-8.0"
             },
+            {
+              "php": "8.4",
+              "wp": "trunk",
+              "mysql": "mysql-8.4"
+            },
             {
               "php": "8.4",
               "wp": "trunk",
@@ -244,6 +269,11 @@ jobs:
               "wp": "trunk",
               "mysql": "mysql-8.0"
             },
+            {
+              "php": "8.5",
+              "wp": "trunk",
+              "mysql": "mysql-8.4"
+            },
             {
               "php": "8.5",
               "wp": "trunk",
@@ -260,6 +290,11 @@ jobs:
               "wp": "trunk",
               "mysql": "mysql-8.0"
             },
+            {
+              "php": "nightly",
+              "wp": "trunk",
+              "mysql": "mysql-8.4"
+            },
             {
               "php": "nightly",
               "wp": "trunk",
@@ -516,7 +551,8 @@ jobs:
           user: ${{ env.WP_CLI_TEST_DBUSER}}
           password: ${{ env.WP_CLI_TEST_DBPASS}}
           my-cnf: |
-            default_authentication_plugin=mysql_native_password
+            ${{ contains(matrix.mysql, 'mysql-8.4') && 'mysql_native_password=ON
+            authentication_policy=mysql_native_password,' || 'default_authentication_plugin=mysql_native_password' }}
 
       - name: Prepare test database
         if: ${{ matrix.dbtype != 'sqlite' }}

From b197a1bb62b929476ac2628206276329d9b8bebd Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Sat, 14 Feb 2026 22:43:41 +0000
Subject: [PATCH 3/3] Refactor MySQL authentication configuration for better
 readability

Co-authored-by: swissspidy <841956+swissspidy@users.noreply.github.com>
---
 .github/workflows/reusable-testing.yml | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/reusable-testing.yml b/.github/workflows/reusable-testing.yml
index 5088983..565d406 100644
--- a/.github/workflows/reusable-testing.yml
+++ b/.github/workflows/reusable-testing.yml
@@ -540,6 +540,21 @@ jobs:
           # Bust the cache at least once a month - output format: YYYY-MM.
           custom-cache-suffix: $(date -u "+%Y-%m")
 
+      - name: Determine MySQL authentication configuration
+        id: mysql-config
+        if: ${{ matrix.dbtype != 'sqlite' }}
+        run: |
+          if [[ "${{ matrix.mysql }}" == *"mysql-8.4"* ]]; then
+            # MySQL 8.4 requires explicit loading of mysql_native_password plugin
+            echo "auth-config<<EOF" >> $GITHUB_OUTPUT
+            echo "mysql_native_password=ON" >> $GITHUB_OUTPUT
+            echo "authentication_policy=mysql_native_password," >> $GITHUB_OUTPUT
+            echo "EOF" >> $GITHUB_OUTPUT
+          else
+            # MySQL 5.6, 5.7, 8.0 and MariaDB use the legacy configuration
+            echo "auth-config=default_authentication_plugin=mysql_native_password" >> $GITHUB_OUTPUT
+          fi
+
       - name: Setup MySQL Server
         id: setup-mysql
         if: ${{ matrix.dbtype != 'sqlite' }}
@@ -551,8 +566,7 @@ jobs:
           user: ${{ env.WP_CLI_TEST_DBUSER}}
           password: ${{ env.WP_CLI_TEST_DBPASS}}
           my-cnf: |
-            ${{ contains(matrix.mysql, 'mysql-8.4') && 'mysql_native_password=ON
-            authentication_policy=mysql_native_password,' || 'default_authentication_plugin=mysql_native_password' }}
+            ${{ steps.mysql-config.outputs.auth-config }}
 
       - name: Prepare test database
         if: ${{ matrix.dbtype != 'sqlite' }}