workflows: replace deprecated 'set-output'; (re)joined pr_unittests i…

…nto unittests.yml

.github/workflows/pr_unittests.yml

@@ -4,7 +4,7 @@ on:
   workflow_dispatch:
   pull_request:
     branches:
-      - 'develop'
+      - '!develop'
 
 jobs:
   build:

.github/workflows/unittests.yml

@@ -6,7 +6,9 @@ on:
     branches:
       - '*'
       - '!release_doc'
-
+  pull_request:
+    branches:
+      - 'develop'
 jobs:
   build:
     runs-on: ubuntu-20.04 #latest
@@ -24,16 +26,23 @@ jobs:
           sudo apt-get install gcc --only-upgrade
 
       - name: Get branch name
-        run: |
-          echo "##[set-output name=branch;]$(echo ${GITHUB_REF#refs/heads/})"
-          echo ${GITHUB_REF#refs/heads/}
+        run: echo "branch=$(echo ${GITHUB_REF#refs/heads/})" >>$GITHUB_OUTPUT
         id: extract_branch
 
-      - name: Checkout core from ${{steps.extract_branch.outputs.branch}} branch
+      - name: Checkout core from branch '${{steps.extract_branch.outputs.branch}}'
+        if: github.event_name != 'pull_request'
         uses: actions/checkout@v3
         with:
           repository: smarthomeNG/smarthome
           ref: ${{steps.extract_branch.outputs.branch}}
+
+      - name: Checkout core from branch 'develop' (for pull request)
+        if: github.event_name == 'pull_request'
+        uses: actions/checkout@v3
+        with:
+          repository: smarthomeNG/smarthome
+          ref: develop
+
       - name: Checkout plugins from ${{steps.extract_branch.outputs.branch}} branch
         uses: actions/checkout@v3
         with: