[GHA] summary for test examples (#3079)

### Changes

- Add summary for jobs 
- Fix pytest argumets `-ra -s`
- Dont fail job if run workflow manually for less 4 examples (catch
return code 5)


### Tests


[test_examples](https://github.com/openvinotoolkit/nncf/actions/runs/11798937213)

.github/scripts/pytest_md_summary.py

@@ -0,0 +1,59 @@
+# Copyright (c) 2024 Intel Corporation
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#      http://www.apache.org/licenses/LICENSE-2.0
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+This script generates a summary table in Markdown format from an XML report generated by pytest.
+
+Usage in GitHub workflow:
+    - name: Test Summary
+    if: ${{ !cancelled() }}
+    run: |
+        python .github/scripts/generate_examples_summary.py pytest-results.xml >> $GITHUB_STEP_SUMMARY
+"""
+
+import sys
+import xml.etree.ElementTree as ET
+
+# Load the XML report generated by pytest
+xml_file = sys.argv[1]
+
+try:
+    tree = ET.parse(xml_file)
+except FileNotFoundError:
+    sys.exit(1)
+
+root = tree.getroot()
+
+# Build the summary table in Markdown format
+table_lines = []
+table_lines.append("| Test Name | Status | Time | Message |")
+table_lines.append("|:----------|:------:|-----:|:--------|")
+
+# Iterate over test cases
+for testcase in root.findall(".//testcase"):
+    test_name = testcase.get("name")
+    time_duration = float(testcase.get("time", "0"))
+    message = ""
+    if testcase.find("failure") is not None:
+        status = "$${\color{red}Failed}$$"
+        message = testcase.find("failure").get("message", "")
+    elif testcase.find("error") is not None:
+        status = "$${\color{red}Error}$$"
+    elif testcase.find("skipped") is not None:
+        status = "$${\color{orange}Skipped}$$"
+        message = testcase.find("skipped").get("message", "")
+    else:
+        status = "$${\color{green}Ok}$$"
+
+    # Append each row to the table
+    table_lines.append(f"| {test_name} | {status} | {time_duration:.0f} | {message} |")
+
+print("\n".join(table_lines))

.github/workflows/examples.yml

@@ -13,6 +13,10 @@ on:
         description: 'Pytest arguments'
         default: ''
 
+concurrency:
+  group: test-examples-${{ github.workflow }}-${{ github.ref }}-${{ github.event.inputs.pytest_args || '' }}-${{github.event.inputs.pull_request_number || ''}}
+  cancel-in-progress: false
+
 jobs:
   examples-cpu:
     name: Test exmaples CPU [${{ matrix.group }}/4]
@@ -48,19 +52,19 @@ jobs:
         run: pip list
       - name: Run examples test scope
         run: |
-          python -m pytest -ras tests/cross_fw/examples \
-            --junit-xml=pytest-results-${{ matrix.group }}.xml \
+          set +e
+          python -m pytest -s -ra tests/cross_fw/examples \
+            --junit-xml=pytest-results.xml \
             --durations-path=tests/cross_fw/examples/.test_durations \
             --splitting-algorithm=least_duration \
             --splits 4 \
             --group ${{ matrix.group }} \
             ${{ github.event.inputs.pytest_args || '' }}
+          ret=$?
+          [ $ret -eq 5 ] && [ -n "${{ github.event.inputs.pytest_args || '' }}" ]  && exit 0 || exit $ret
         env:
           TQDM_DISABLE: 1
-      - name: Upload artifact
-        uses: actions/upload-artifact@v4
+      - name: Test Summary
         if: ${{ !cancelled() }}
-        with:
-          name: pytest-results-${{ matrix.group }}
-          path: pytest-results-${{ matrix.group }}.xml
-          overwrite: True
+        run: |
+            python .github/scripts/pytest_md_summary.py pytest-results.xml >> $GITHUB_STEP_SUMMARY