chore: validate plurals in strings.xml

.github/workflows/unit_tests.yml

@@ -48,3 +48,26 @@ jobs:
           name: failures
           path: app/build/reports/
           retention-days: 5
+
+  translation_strings:
+    name: Validate strings.xml
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout
+
+      - name: Use Python
+        uses: actions/python
+
+      - name: Install translations requirements
+        run: make translation_requirements
+
+      - name: Validate English plurals in strings.xml
+        run: make validate_english_plurals
+
+      - name: Test extract strings
+        run: |
+          make extract_translations
+          # Ensure the file is extracted
+          test -f i18n/src/main/res/values/strings.xml

Makefile

@@ -10,3 +10,16 @@ pull_translations: clean_translations_temp_directory
 
 extract_translations: clean_translations_temp_directory
 	python3 i18n_scripts/translation.py --combine
+
+validate_english_plurals:
+	@if git grep 'quantity' -- '**/res/values/strings.xml' | grep -E 'quantity=.(zero|two|few|many)'; then \
+		echo ""; \
+		echo ""; \
+		echo "Error: Found invalid plurals in the files listed above."; \
+		echo "       Please only use 'one' and 'other' in English strings.xml files,"; \
+		echo "       otherwise Transifex fails to parse them."; \
+		echo ""; \
+		exit 1; \
+	else \
+		echo "strings.xml files are valid."; \
+	fi