Feature: Add MongoDB testing support to Grails Forge

This commit adds the missing grails-testing-support-mongodb dependency to the TestContainers feature when MongoDB is selected. It also includes the necessary documentation for unit testing with MongoDB.

Author: sanjana2505006

grails-doc/src/en/guide/testing/unitTesting/installation.adoc

@@ -23,5 +23,6 @@ To install the unit testing support library add the following dependency to the
 [source,groovy,subs="attributes"]
 testCompile "org.apache.grails:grails-testing-support-datamapping"
 testCompile "org.apache.grails:grails-testing-support-web"
+testCompile "org.apache.grails:grails-testing-support-mongodb"
 
 NOTE: The dependencies are only required to implement unit tests for Grails Artifacts. Also, if you are not unit testing domain activity, you may not need the GORM testing support library.

grails-doc/src/en/guide/testing/unitTesting/unitTestingMongodb.adoc

@@ -0,0 +1,34 @@
+# Unit Testing GORM for MongoDB
+
+The `grails-testing-support-mongodb` library provides support for unit testing GORM for MongoDB with TestContainers.
+
+## Installation
+
+To use the MongoDB testing support, add the following dependency to your `build.gradle`:
+
+[source,groovy,subs="attributes"]
+testImplementation "org.apache.grails:grails-testing-support-mongodb"
+
+## Usage
+
+You can use the `grails.test.mongodb.MongoSpec` trait to test MongoDB interactions. This trait will automatically start a MongoDB container using TestContainers if one is not already running.
+
+[source,groovy]
+----
+import grails.test.mongodb.MongoSpec
+import spock.lang.Specification
+
+class MyMongoSpec extends Specification implements MongoSpec {
+
+    void "test mongo connection"() {
+        expect:
+        mongoClient != null
+    }
+}
+----
+
+The `MongoSpec` trait ensures that a MongoDB container is running and provides a `mongoClient` bean.
+
+## Advanced Configuration
+
+The testing support uses `AbstractMongoGrailsExtension` to manage the container. You can configure the MongoDB version using the `mongodbContainerVersion` system property, which defaults to `7.0.19`.

grails-doc/src/en/guide/toc.yml

@@ -296,6 +296,7 @@ testing:
     upgradingMixin: Upgrading From The Mixin Framework
     unitTestingControllers: Unit Testing Controllers
     unitTestingDomainClasses: Unit Testing Domain Classes
+    unitTestingMongodb: Unit Testing GORM for MongoDB
     unitTestingServices: Unit Testing Services
     unitTestingTagLibraries: Unit Testing Tag Libraries
     unitTestingInterceptors: Unit Testing Interceptors

grails-forge/grails-forge-core/src/main/java/org/grails/forge/feature/database/TestContainers.java

@@ -66,23 +66,30 @@ public void apply(GeneratorContext generatorContext) {
             generatorContext.getFeature(DatabaseDriverConfigurationFeature.class).ifPresent(driverConfiguration -> {
                 String driver = "org.testcontainers.jdbc.ContainerDatabaseDriver";
                 if (driverFeature instanceof SQLServer) {
-                    generatorContext.addTemplate("sqlserverEula", new StringTemplate("src/test/resources/container-license-acceptance.txt", "mcr.microsoft.com/mssql/server:2019-CU4-ubuntu-16.04"));
+                    generatorContext.addTemplate("sqlserverEula",
+                            new StringTemplate("src/test/resources/container-license-acceptance.txt",
+                                    "mcr.microsoft.com/mssql/server:2019-CU4-ubuntu-16.04"));
                 }
                 urlForDatabaseDriverFeature(driverFeature).ifPresent(url -> {
-                    Configuration testConfig = generatorContext.getConfiguration("test", ApplicationConfiguration.testConfig());
+                    Configuration testConfig = generatorContext.getConfiguration("test",
+                            ApplicationConfiguration.testConfig());
                     testConfig.put(driverConfiguration.getUrlKey(), url);
                     testConfig.put(driverConfiguration.getDriverKey(), driver);
                 });
-                artifactIdForDriverFeature(driverFeature).ifPresent(dependencyArtifactId ->
-                        generatorContext.addDependency(testContainerTestDependency(dependencyArtifactId)));
+                artifactIdForDriverFeature(driverFeature).ifPresent(dependencyArtifactId -> generatorContext
+                        .addDependency(testContainerTestDependency(dependencyArtifactId)));
             });
         });
         testContainerArtifactIdByTestFramework(generatorContext.getTestFramework()).ifPresent(testArtifactId -> {
             generatorContext.addDependency(testContainerTestDependency(testArtifactId));
         });
 
-        if (generatorContext.isFeaturePresent(MongoFeature.class) || generatorContext.isFeaturePresent(MongoGorm.class)) {
-            generatorContext.addDependency(testContainerTestDependency("mongodb"));
+        if (generatorContext.isFeaturePresent(MongoFeature.class)
+                || generatorContext.isFeaturePresent(MongoGorm.class)) {
+            generatorContext.addDependency(Dependency.builder()
+                    .groupId("org.apache.grails")
+                    .artifactId("grails-testing-support-mongodb")
+                    .testImplementation());
         }
     }
 

grails-forge/grails-forge-core/src/test/groovy/org/grails/forge/feature/database/TestContainersSpec.groovy

@@ -68,8 +68,7 @@ class TestContainersSpec extends ApplicationContextSpec {
                 .render()
 
         then:
-        template.contains('testImplementation "org.testcontainers:mongodb"')
-        template.contains('testImplementation "org.testcontainers:testcontainers"')
+        template.contains('testImplementation "org.apache.grails:grails-testing-support-mongodb"')
     }
 
     void "test mongo-gorm dependency is present for gradle"() {
@@ -79,8 +78,7 @@ class TestContainersSpec extends ApplicationContextSpec {
                 .render()
 
         then:
-        template.contains('testImplementation "org.testcontainers:mongodb"')
-        template.contains('testImplementation "org.testcontainers:testcontainers"')
+        template.contains('testImplementation "org.apache.grails:grails-testing-support-mongodb"')
     }
 
     void "test testcontainers core is present when no testcontainer modules are present for gradle"() {