From c49661736a74e27baca0e68dca1def06373e2f79 Mon Sep 17 00:00:00 2001
From: Judit Novak <judit.novak@canonical.com>
Date: Mon, 2 Oct 2023 16:19:20 +0200
Subject: [PATCH] New env vars to indicate Juju version

---
 .github/workflows/ci.yaml | 6 ++++++
 tox.ini                   | 3 +++
 2 files changed, 9 insertions(+)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 0cfd37820..c16a756b0 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -19,6 +19,10 @@ jobs:
     uses: canonical/data-platform-workflows/.github/workflows/lint.yaml@v4.2.3
 
   unit-test:
+    strategy:
+      fail-fast: false
+      matrix:
+        juju-version:  ["2.9", "3.1"]
     name: Unit test charm
     runs-on: ubuntu-latest
     timeout-minutes: 5
@@ -31,6 +35,8 @@ jobs:
           pipx install poetry
       - name: Run tests
         run: tox run -e unit
+        env:
+          LIBJUJU_VERSION_SPECIFIER: ${{ matrix.juju-version }}
       - name: Upload Coverage to Codecov
         uses: codecov/codecov-action@v3
 
diff --git a/tox.ini b/tox.ini
index ed74e208c..3e139787f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -60,6 +60,8 @@ commands =
 
 [testenv:unit]
 description = Run unit tests
+pass_env =
+    LIBJUJU_VERSION_SPECIFIER
 commands_pre =
     poetry install --only main,charm-libs,unit
 commands =
@@ -78,6 +80,7 @@ pass_env =
     CI
     GITHUB_OUTPUT
     SECRETS_FROM_GITHUB
+    LIBJUJU_VERSION_SPECIFIER
 allowlist_externals =
     {[testenv:pack-wrapper]allowlist_externals}
 commands_pre =