From a0133cd12d9571eb87c1483aec06c6358c6c267a Mon Sep 17 00:00:00 2001
From: Wei Ji <weiji.leong@vuw.ac.nz>
Date: Tue, 27 Oct 2020 16:22:21 +1300
Subject: [PATCH] Use GitHub Action to upload diff images on test failure

---
 .github/workflows/ci_tests.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/.github/workflows/ci_tests.yaml b/.github/workflows/ci_tests.yaml
index 5d941d2bb3b..3b9aedb1bc1 100644
--- a/.github/workflows/ci_tests.yaml
+++ b/.github/workflows/ci_tests.yaml
@@ -117,6 +117,12 @@ jobs:
         shell: bash -l {0}
         run: make test PYTEST_EXTRA="-r P"
 
+      # Upload diff images on test failure
+      - name: Upload diff images if any test fails
+        uses: actions/upload-artifact@v2
+        if: ${{ failure() }}
+          path: tmp-test-dir-with-unique-name
+
       # Build the documentation
       - name: Build the documentation
         shell: bash -l {0}