From 882b5ad1f162da14d591c56b1006d7ef26ca5375 Mon Sep 17 00:00:00 2001
From: James Robson <jaggededgedjustice@gmail.com>
Date: Sun, 8 Aug 2021 15:48:38 +0100
Subject: [PATCH] Display changes in the failing GNU tests

Co-authored-by: Michael Debertol <michael.debertol@gmail.com>
---
 .github/workflows/GnuTests.yml | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/.github/workflows/GnuTests.yml b/.github/workflows/GnuTests.yml
index fe225d2fa..dad53f20c 100644
--- a/.github/workflows/GnuTests.yml
+++ b/.github/workflows/GnuTests.yml
@@ -98,6 +98,32 @@ jobs:
         repo: uutils/coreutils
         branch: master
         path: dl
+    - name: Download the log
+      uses: dawidd6/action-download-artifact@v2
+      with:
+        workflow: GnuTests.yml
+        name: test-report
+        repo: uutils/coreutils
+        branch: master
+        path: dl
+    - name: Compare failing tests against master
+      shell: bash
+      run: |
+            OLD_FAILING=$(sed -n "s/^FAIL: \([[:print:]]\+\).*/\1/p" dl/test-suite.log | sort)
+            NEW_FAILING=$(sed -n "s/^FAIL: \([[:print:]]\+\).*/\1/p" gnu/tests/test-suite.log | sort)
+            for LINE in $OLD_FAILING
+            do
+              if ! grep -Fxq $LINE<<<"$NEW_FAILING"; then
+                echo "::warning ::Congrats! The gnu test $LINE is now passing!"
+              fi
+            done
+            for LINE in $NEW_FAILING
+            do
+              if ! grep -Fxq $LINE<<<"$OLD_FAILING"
+              then
+                echo "::error ::GNU test failed: $LINE. $LINE is passing on 'master'. Maybe you have to rebase?"
+              fi
+            done
     - name: Compare against master results
       shell: bash
       run: |