test(cucumber_get_post): add documentation to launcg cucumber test

Author: romainVanhee

README.md

@@ -319,11 +319,23 @@ Test execution lifecycle:
 
 # Integration tests only
 ./mvnw failsafe:integration-test
+```
+
+### Run Cucumber Tests
+
+Cucumber tests use an H2 in-memory database (no Docker needed).
 
-# Tests with specific tag (Cucumber)
-./mvnw test -Dcucumber.filter.tags="@smoke"
+```bash
+# Run all Cucumber tests
+./mvnw test -Dtest=CucumberIntegrationTest
+
+# Run with a specific tag
+./mvnw test -Dtest=CucumberIntegrationTest -Dcucumber.filter.tags="@smoke"
 ```
 
+Feature files are located in `src/test/resources/features/`.
+Step definitions are in `src/test/java/feature/StepDefinition.java`.
+
 ### Test Coverage Report
 
 ```bash
@@ -338,7 +350,7 @@ Generated reports:
 
 - **Framework**: JUnit 5
 - **Mocking**: Mockito
-- **BDD**: Cucumber (planned)
+- **BDD**: Cucumber
 - **Coverage**: JaCoCo
 
 ---