Make promptnode test unit (#4420)

.github/labeler.yml

@@ -47,7 +47,7 @@ topic:LLM:
 - test/nodes/test_prompt_node.py
 topic:promptnode:
 - haystack/nodes/prompt/*
-- test/nodes/test_prompt_node.py
+- test/prompt/*
 topic:file_converter:
 - haystack/nodes/file_converter/*
 - test/nodes/test_file_converter.py

.github/workflows/tests.yml

@@ -95,6 +95,7 @@ jobs:
           - nodes
           - agents
           - preview
+          - prompt
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
@@ -402,6 +403,34 @@ jobs:
           channel: '#haystack'
         if: failure() && github.repository_owner == 'deepset-ai' && github.ref == 'refs/heads/main'
 
+  integration-tests-promptnode:
+    name: Integration / PromptNode / ${{ matrix.os }}
+    needs:
+      - unit-tests
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ ubuntu-latest,windows-latest ]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup Python
+        uses: ./.github/actions/python_cache/
+
+      - name: Install Haystack
+        run: pip install -U .
+
+      - name: Run tests
+        run: |
+          pytest --maxfail=5 -m "integration" test/prompt
+
+      - uses: act10ns/slack@v2
+        with:
+          status: ${{ job.status }}
+          channel: '#haystack'
+        if: failure() && github.repository_owner == 'deepset-ai' && github.ref == 'refs/heads/main'
+
   integration-tests-agents:
     name: Integration / Agents / ${{ matrix.os }}
     needs: