Add a test to ensure consistency of class names

.github/workflows/code_layout.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Set up Python 3.10
         uses: actions/setup-python@v4
         with:
-          python-version: '3.10' 
+          python-version: '3.10'
       - name: Install requirements
         run: |
           wget https://www.doxygen.nl/files/doxygen-${DOXYGEN_VERSION}.linux.bin.tar.gz
@@ -72,6 +72,14 @@ jobs:
       - name: Run Banned Keywords Test
         run: ./tests/code_layout/test_banned_keywords.sh
 
+  class_name_check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Run class naming conventions check
+        run: ./tests/code_layout/test_class_names.sh
+
   def_window_title_check:
     runs-on: ubuntu-latest
     steps:

tests/code_layout/CMakeLists.txt

@@ -9,6 +9,7 @@ if(WITH_ASTYLE)
 endif()
 
 add_qgis_test_script(qgis_banned_keywords tests/code_layout/test_banned_keywords.sh)
+add_qgis_test_script(qgis_class_names tests/code_layout/test_class_names.sh)
 add_qgis_test_script(qgis_licenses tests/code_layout/test_licenses.sh)
 add_qgis_test_script(qgis_spelling scripts/spell_check/spell_test.sh)
 add_qgis_test_script(qgis_defwindowtitle tests/code_layout/test_defwindowtitle.sh)

tests/code_layout/test_class_names.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+
+# This test checks for use of non-compliant class names
+
+declare -a KEYWORDS=()
+declare -a HINTS=()
+
+KEYWORDS[0]="^\s*class[^:]*Qgs\S*3d"
+HINTS[0]="Use '3D' capitalisation in class names instead of '3d'"
+
+RES=
+DIR=$(git rev-parse --show-toplevel)
+
+pushd "${DIR}" > /dev/null || exit
+
+for i in "${!KEYWORDS[@]}"
+do
+  FOUND=$(git grep "${KEYWORDS[$i]}" -- 'src/*.h' 'src/*.cpp' | sed -n 's/.*\(Qgs\w*\).*/\1/p' | sort -u)
+
+  if [[  ${FOUND} ]]; then
+    echo "Found classes with non-standard names!"
+    echo " -> ${HINTS[$i]}"
+    echo
+    echo "${FOUND}"
+    echo
+    RES=1
+  fi
+
+done
+
+popd > /dev/null || exit
+
+if [ $RES ]; then
+  echo " *** Found non-compliant class names"
+  exit 1
+fi
+