jamesfredley commented on code in PR #15538:
URL: https://github.com/apache/grails-core/pull/15538#discussion_r3012294327


##########
grails-gradle/plugins/src/main/groovy/org/grails/gradle/plugin/core/TestPhasesGradlePlugin.groovy:
##########
@@ -0,0 +1,178 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you 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
+ *
+ *    https://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.
+ */
+package org.grails.gradle.plugin.core
+
+import groovy.transform.CompileDynamic
+import groovy.transform.CompileStatic
+
+import org.gradle.api.NamedDomainObjectContainer
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import org.gradle.api.artifacts.ConfigurationContainer
+import org.gradle.api.artifacts.dsl.DependencyHandler
+import org.gradle.api.tasks.SourceSet
+import org.gradle.api.tasks.SourceSetContainer
+import org.gradle.api.tasks.SourceSetOutput
+import org.gradle.api.tasks.TaskContainer
+import org.gradle.api.tasks.TaskProvider
+import org.gradle.api.tasks.testing.Test
+import org.gradle.api.tasks.testing.TestReport
+import org.gradle.language.base.plugins.LifecycleBasePlugin
+import org.gradle.plugins.ide.idea.model.IdeaModel
+import org.gradle.plugins.ide.idea.model.IdeaModule
+
+import org.grails.gradle.plugin.util.SourceSets
+
+import static 
org.gradle.api.plugins.JavaPlugin.TEST_IMPLEMENTATION_CONFIGURATION_NAME
+import static 
org.gradle.api.plugins.JavaPlugin.TEST_RUNTIME_ONLY_CONFIGURATION_NAME
+import static org.gradle.api.plugins.JavaPlugin.TEST_TASK_NAME
+import static org.gradle.api.tasks.SourceSet.TEST_SOURCE_SET_NAME
+
+/**
+ * Gradle plugin that provides a {@code testPhases} extension for defining
+ * additional test phases (e.g. integrationTest, functionalTest).
+ *
+ * <p>Each {@link TestPhase} added to the container automatically gets its own
+ * source set, dependency configurations, {@link Test} task, and merged test
+ * report contribution.</p>
+ *
+ * @since 2025.0
+ */
+@CompileStatic
+class TestPhasesGradlePlugin implements Plugin<Project> {
+
+    static final String EXTENSION_NAME = 'testPhases'
+    static final String MERGE_TEST_REPORTS_TASK_NAME = 'mergeTestReports'
+
+    NamedDomainObjectContainer<TestPhase> testPhases
+
+    @Override
+    void apply(Project project) {
+        testPhases = project.container(TestPhase)
+        project.extensions.add(EXTENSION_NAME, testPhases)
+
+        testPhases.all { TestPhase phase ->
+            configureTestPhase(project, phase)
+        }
+    }
+
+    private void configureTestPhase(Project project, TestPhase phase) {
+        String phaseName = phase.name
+        String implConfigName = "${phaseName}Implementation"
+        String runtimeOnlyConfigName = "${phaseName}RuntimeOnly"
+
+        File[] sourceDirs = findTestPhaseSources(project, phase)
+        List<File> acceptedSourceDirs = []
+
+        final SourceSetContainer sourceSets = 
SourceSets.findSourceSets(project)
+        final SourceSetOutput mainSourceSetOutput = 
SourceSets.findMainSourceSet(project).output
+        final SourceSetOutput testSourceSetOutput = 
SourceSets.findSourceSet(project, TEST_SOURCE_SET_NAME).output
+        final SourceSet phaseSourceSet = sourceSets.create(phaseName)
+        phaseSourceSet.compileClasspath += mainSourceSetOutput + 
testSourceSetOutput
+        phaseSourceSet.runtimeClasspath += mainSourceSetOutput + 
testSourceSetOutput
+
+        if (sourceDirs != null) {
+            for (File srcDir in sourceDirs) {
+                registerSourceDir(phaseSourceSet, srcDir)
+                acceptedSourceDirs.add(srcDir)
+            }
+        }
+
+        final File resources = new File(project.projectDir, 'grails-app/conf')
+        phaseSourceSet.resources.srcDir(resources)
+
+        final DependencyHandler dependencies = project.dependencies
+        dependencies.add(implConfigName, mainSourceSetOutput)
+        dependencies.add(implConfigName, testSourceSetOutput)
+
+        final ConfigurationContainer configurations = project.configurations
+        configurations.named(implConfigName).configure {
+            
it.extendsFrom(configurations.named(TEST_IMPLEMENTATION_CONFIGURATION_NAME).get())
+        }
+        configurations.named(runtimeOnlyConfigName).configure {
+            
it.extendsFrom(configurations.named(TEST_RUNTIME_ONLY_CONFIGURATION_NAME).get())
+        }
+
+        final TaskContainer tasks = project.tasks
+        final TaskProvider<Test> testTask = tasks.register(phaseName, Test)
+        testTask.configure {
+            it.group = LifecycleBasePlugin.VERIFICATION_GROUP
+            it.testClassesDirs = phaseSourceSet.output.classesDirs
+            it.classpath = phaseSourceSet.runtimeClasspath
+            it.shouldRunAfter(TEST_TASK_NAME)
+            it.finalizedBy(MERGE_TEST_REPORTS_TASK_NAME)
+            it.reports.html.required.set(false)
+            it.maxParallelForks = 1
+            it.testLogging {
+                events('passed')
+            }
+            it.systemProperty(phase.systemPropertyName, true)
+        }
+        tasks.named('check').configure {
+            it.dependsOn(testTask)
+        }
+
+        configureMergeTestReports(project, phaseName)
+
+        if (phase.ideaIntegration) {
+            final File[] files = acceptedSourceDirs.toArray(new 
File[acceptedSourceDirs.size()])
+            integrateIdea(project, files)
+        }
+    }
+
+    private void configureMergeTestReports(Project project, String phaseName) {
+        final TaskContainer tasks = project.tasks
+        if (tasks.names.contains(MERGE_TEST_REPORTS_TASK_NAME)) {
+            tasks.named(MERGE_TEST_REPORTS_TASK_NAME, TestReport).configure {
+                it.testResults.from(
+                        
project.files("${project.buildDir}/test-results/binary/${phaseName}"),
+                        
project.files("${project.buildDir}/test-results/${phaseName}/binary")
+                )
+            }
+        } else {
+            tasks.register(MERGE_TEST_REPORTS_TASK_NAME, TestReport) {
+                it.mustRunAfter(tasks.withType(Test).toArray())

Review Comment:
   each test task also has `it.finalizedBy(MERGE_TEST_REPORTS_TASK_NAME)` which 
handles execution ordering



##########
grails-gradle/plugins/src/main/groovy/org/grails/gradle/plugin/core/TestPhasesGradlePlugin.groovy:
##########
@@ -0,0 +1,178 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you 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
+ *
+ *    https://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.
+ */
+package org.grails.gradle.plugin.core
+
+import groovy.transform.CompileDynamic
+import groovy.transform.CompileStatic
+
+import org.gradle.api.NamedDomainObjectContainer
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import org.gradle.api.artifacts.ConfigurationContainer
+import org.gradle.api.artifacts.dsl.DependencyHandler
+import org.gradle.api.tasks.SourceSet
+import org.gradle.api.tasks.SourceSetContainer
+import org.gradle.api.tasks.SourceSetOutput
+import org.gradle.api.tasks.TaskContainer
+import org.gradle.api.tasks.TaskProvider
+import org.gradle.api.tasks.testing.Test
+import org.gradle.api.tasks.testing.TestReport
+import org.gradle.language.base.plugins.LifecycleBasePlugin
+import org.gradle.plugins.ide.idea.model.IdeaModel
+import org.gradle.plugins.ide.idea.model.IdeaModule
+
+import org.grails.gradle.plugin.util.SourceSets
+
+import static 
org.gradle.api.plugins.JavaPlugin.TEST_IMPLEMENTATION_CONFIGURATION_NAME
+import static 
org.gradle.api.plugins.JavaPlugin.TEST_RUNTIME_ONLY_CONFIGURATION_NAME
+import static org.gradle.api.plugins.JavaPlugin.TEST_TASK_NAME
+import static org.gradle.api.tasks.SourceSet.TEST_SOURCE_SET_NAME
+
+/**
+ * Gradle plugin that provides a {@code testPhases} extension for defining
+ * additional test phases (e.g. integrationTest, functionalTest).
+ *
+ * <p>Each {@link TestPhase} added to the container automatically gets its own
+ * source set, dependency configurations, {@link Test} task, and merged test
+ * report contribution.</p>
+ *
+ * @since 2025.0
+ */
+@CompileStatic
+class TestPhasesGradlePlugin implements Plugin<Project> {
+
+    static final String EXTENSION_NAME = 'testPhases'
+    static final String MERGE_TEST_REPORTS_TASK_NAME = 'mergeTestReports'
+
+    NamedDomainObjectContainer<TestPhase> testPhases
+
+    @Override
+    void apply(Project project) {
+        testPhases = project.container(TestPhase)
+        project.extensions.add(EXTENSION_NAME, testPhases)
+
+        testPhases.all { TestPhase phase ->
+            configureTestPhase(project, phase)
+        }
+    }
+
+    private void configureTestPhase(Project project, TestPhase phase) {
+        String phaseName = phase.name
+        String implConfigName = "${phaseName}Implementation"
+        String runtimeOnlyConfigName = "${phaseName}RuntimeOnly"
+
+        File[] sourceDirs = findTestPhaseSources(project, phase)
+        List<File> acceptedSourceDirs = []
+
+        final SourceSetContainer sourceSets = 
SourceSets.findSourceSets(project)
+        final SourceSetOutput mainSourceSetOutput = 
SourceSets.findMainSourceSet(project).output
+        final SourceSetOutput testSourceSetOutput = 
SourceSets.findSourceSet(project, TEST_SOURCE_SET_NAME).output
+        final SourceSet phaseSourceSet = sourceSets.create(phaseName)
+        phaseSourceSet.compileClasspath += mainSourceSetOutput + 
testSourceSetOutput
+        phaseSourceSet.runtimeClasspath += mainSourceSetOutput + 
testSourceSetOutput
+
+        if (sourceDirs != null) {
+            for (File srcDir in sourceDirs) {
+                registerSourceDir(phaseSourceSet, srcDir)
+                acceptedSourceDirs.add(srcDir)
+            }
+        }
+
+        final File resources = new File(project.projectDir, 'grails-app/conf')
+        phaseSourceSet.resources.srcDir(resources)
+
+        final DependencyHandler dependencies = project.dependencies
+        dependencies.add(implConfigName, mainSourceSetOutput)
+        dependencies.add(implConfigName, testSourceSetOutput)
+
+        final ConfigurationContainer configurations = project.configurations
+        configurations.named(implConfigName).configure {
+            
it.extendsFrom(configurations.named(TEST_IMPLEMENTATION_CONFIGURATION_NAME).get())
+        }
+        configurations.named(runtimeOnlyConfigName).configure {
+            
it.extendsFrom(configurations.named(TEST_RUNTIME_ONLY_CONFIGURATION_NAME).get())
+        }
+
+        final TaskContainer tasks = project.tasks
+        final TaskProvider<Test> testTask = tasks.register(phaseName, Test)
+        testTask.configure {
+            it.group = LifecycleBasePlugin.VERIFICATION_GROUP
+            it.testClassesDirs = phaseSourceSet.output.classesDirs
+            it.classpath = phaseSourceSet.runtimeClasspath
+            it.shouldRunAfter(TEST_TASK_NAME)
+            it.finalizedBy(MERGE_TEST_REPORTS_TASK_NAME)
+            it.reports.html.required.set(false)
+            it.maxParallelForks = 1
+            it.testLogging {
+                events('passed')
+            }
+            it.systemProperty(phase.systemPropertyName, true)
+        }
+        tasks.named('check').configure {
+            it.dependsOn(testTask)
+        }
+
+        configureMergeTestReports(project, phaseName)
+
+        if (phase.ideaIntegration) {
+            final File[] files = acceptedSourceDirs.toArray(new 
File[acceptedSourceDirs.size()])
+            integrateIdea(project, files)
+        }
+    }
+
+    private void configureMergeTestReports(Project project, String phaseName) {
+        final TaskContainer tasks = project.tasks
+        if (tasks.names.contains(MERGE_TEST_REPORTS_TASK_NAME)) {
+            tasks.named(MERGE_TEST_REPORTS_TASK_NAME, TestReport).configure {
+                it.testResults.from(
+                        
project.files("${project.buildDir}/test-results/binary/${phaseName}"),
+                        
project.files("${project.buildDir}/test-results/${phaseName}/binary")
+                )
+            }
+        } else {
+            tasks.register(MERGE_TEST_REPORTS_TASK_NAME, TestReport) {
+                it.mustRunAfter(tasks.withType(Test).toArray())
+                
it.destinationDirectory.set(project.layout.buildDirectory.dir('reports/tests'))
+                it.testResults.from(
+                        
project.files("${project.buildDir}/test-results/binary/test", 
"${project.buildDir}/test-results/binary/${phaseName}"),

Review Comment:
   project.layout.buildDirectory



##########
grails-gradle/plugins/src/main/groovy/org/grails/gradle/plugin/core/TestPhasesGradlePlugin.groovy:
##########
@@ -0,0 +1,178 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you 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
+ *
+ *    https://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.
+ */
+package org.grails.gradle.plugin.core
+
+import groovy.transform.CompileDynamic
+import groovy.transform.CompileStatic
+
+import org.gradle.api.NamedDomainObjectContainer
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import org.gradle.api.artifacts.ConfigurationContainer
+import org.gradle.api.artifacts.dsl.DependencyHandler
+import org.gradle.api.tasks.SourceSet
+import org.gradle.api.tasks.SourceSetContainer
+import org.gradle.api.tasks.SourceSetOutput
+import org.gradle.api.tasks.TaskContainer
+import org.gradle.api.tasks.TaskProvider
+import org.gradle.api.tasks.testing.Test
+import org.gradle.api.tasks.testing.TestReport
+import org.gradle.language.base.plugins.LifecycleBasePlugin
+import org.gradle.plugins.ide.idea.model.IdeaModel
+import org.gradle.plugins.ide.idea.model.IdeaModule
+
+import org.grails.gradle.plugin.util.SourceSets
+
+import static 
org.gradle.api.plugins.JavaPlugin.TEST_IMPLEMENTATION_CONFIGURATION_NAME
+import static 
org.gradle.api.plugins.JavaPlugin.TEST_RUNTIME_ONLY_CONFIGURATION_NAME
+import static org.gradle.api.plugins.JavaPlugin.TEST_TASK_NAME
+import static org.gradle.api.tasks.SourceSet.TEST_SOURCE_SET_NAME
+
+/**
+ * Gradle plugin that provides a {@code testPhases} extension for defining
+ * additional test phases (e.g. integrationTest, functionalTest).
+ *
+ * <p>Each {@link TestPhase} added to the container automatically gets its own
+ * source set, dependency configurations, {@link Test} task, and merged test
+ * report contribution.</p>
+ *
+ * @since 2025.0
+ */
+@CompileStatic
+class TestPhasesGradlePlugin implements Plugin<Project> {
+
+    static final String EXTENSION_NAME = 'testPhases'
+    static final String MERGE_TEST_REPORTS_TASK_NAME = 'mergeTestReports'
+
+    NamedDomainObjectContainer<TestPhase> testPhases
+
+    @Override
+    void apply(Project project) {
+        testPhases = project.container(TestPhase)
+        project.extensions.add(EXTENSION_NAME, testPhases)
+
+        testPhases.all { TestPhase phase ->
+            configureTestPhase(project, phase)
+        }
+    }
+
+    private void configureTestPhase(Project project, TestPhase phase) {
+        String phaseName = phase.name
+        String implConfigName = "${phaseName}Implementation"
+        String runtimeOnlyConfigName = "${phaseName}RuntimeOnly"
+
+        File[] sourceDirs = findTestPhaseSources(project, phase)
+        List<File> acceptedSourceDirs = []
+
+        final SourceSetContainer sourceSets = 
SourceSets.findSourceSets(project)
+        final SourceSetOutput mainSourceSetOutput = 
SourceSets.findMainSourceSet(project).output
+        final SourceSetOutput testSourceSetOutput = 
SourceSets.findSourceSet(project, TEST_SOURCE_SET_NAME).output
+        final SourceSet phaseSourceSet = sourceSets.create(phaseName)
+        phaseSourceSet.compileClasspath += mainSourceSetOutput + 
testSourceSetOutput
+        phaseSourceSet.runtimeClasspath += mainSourceSetOutput + 
testSourceSetOutput
+
+        if (sourceDirs != null) {
+            for (File srcDir in sourceDirs) {
+                registerSourceDir(phaseSourceSet, srcDir)
+                acceptedSourceDirs.add(srcDir)
+            }
+        }
+
+        final File resources = new File(project.projectDir, 'grails-app/conf')
+        phaseSourceSet.resources.srcDir(resources)
+
+        final DependencyHandler dependencies = project.dependencies
+        dependencies.add(implConfigName, mainSourceSetOutput)
+        dependencies.add(implConfigName, testSourceSetOutput)
+
+        final ConfigurationContainer configurations = project.configurations
+        configurations.named(implConfigName).configure {
+            
it.extendsFrom(configurations.named(TEST_IMPLEMENTATION_CONFIGURATION_NAME).get())
+        }
+        configurations.named(runtimeOnlyConfigName).configure {
+            
it.extendsFrom(configurations.named(TEST_RUNTIME_ONLY_CONFIGURATION_NAME).get())
+        }
+
+        final TaskContainer tasks = project.tasks
+        final TaskProvider<Test> testTask = tasks.register(phaseName, Test)
+        testTask.configure {
+            it.group = LifecycleBasePlugin.VERIFICATION_GROUP
+            it.testClassesDirs = phaseSourceSet.output.classesDirs
+            it.classpath = phaseSourceSet.runtimeClasspath
+            it.shouldRunAfter(TEST_TASK_NAME)
+            it.finalizedBy(MERGE_TEST_REPORTS_TASK_NAME)
+            it.reports.html.required.set(false)
+            it.maxParallelForks = 1
+            it.testLogging {
+                events('passed')
+            }
+            it.systemProperty(phase.systemPropertyName, true)
+        }
+        tasks.named('check').configure {
+            it.dependsOn(testTask)
+        }
+
+        configureMergeTestReports(project, phaseName)
+
+        if (phase.ideaIntegration) {
+            final File[] files = acceptedSourceDirs.toArray(new 
File[acceptedSourceDirs.size()])
+            integrateIdea(project, files)
+        }
+    }
+
+    private void configureMergeTestReports(Project project, String phaseName) {
+        final TaskContainer tasks = project.tasks
+        if (tasks.names.contains(MERGE_TEST_REPORTS_TASK_NAME)) {
+            tasks.named(MERGE_TEST_REPORTS_TASK_NAME, TestReport).configure {
+                it.testResults.from(
+                        
project.files("${project.buildDir}/test-results/binary/${phaseName}"),
+                        
project.files("${project.buildDir}/test-results/${phaseName}/binary")
+                )
+            }
+        } else {
+            tasks.register(MERGE_TEST_REPORTS_TASK_NAME, TestReport) {
+                it.mustRunAfter(tasks.withType(Test).toArray())
+                
it.destinationDirectory.set(project.layout.buildDirectory.dir('reports/tests'))
+                it.testResults.from(
+                        
project.files("${project.buildDir}/test-results/binary/test", 
"${project.buildDir}/test-results/binary/${phaseName}"),
+                        
project.files("${project.buildDir}/test-results/test/binary", 
"${project.buildDir}/test-results/${phaseName}/binary")

Review Comment:
   project.layout.buildDirectory



##########
grails-gradle/plugins/src/main/groovy/org/grails/gradle/plugin/core/TestPhase.groovy:
##########
@@ -0,0 +1,51 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you 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
+ *
+ *    https://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.
+ */
+package org.grails.gradle.plugin.core
+
+import groovy.transform.CompileStatic
+
+import grails.util.GrailsNameUtils
+
+/**
+ * Represents a configurable test phase (e.g. integrationTest, functionalTest).
+ *
+ * <p>Default values for {@code sourceFolderName} and {@code 
systemPropertyName}
+ * are derived from the phase {@code name} so that users only need to declare 
the
+ * phase by name in most cases.</p>
+ *
+ * @since 2025.0

Review Comment:
   @since 7.1.0



##########
grails-gradle/plugins/src/main/groovy/org/grails/gradle/plugin/core/IntegrationTestGradlePlugin.groovy:
##########
@@ -18,135 +18,32 @@
  */
 package org.grails.gradle.plugin.core
 
-import groovy.transform.CompileDynamic
 import groovy.transform.CompileStatic
 
 import org.gradle.api.Plugin
 import org.gradle.api.Project
-import org.gradle.api.artifacts.ConfigurationContainer
-import org.gradle.api.artifacts.dsl.DependencyHandler
-import org.gradle.api.tasks.SourceSet
-import org.gradle.api.tasks.SourceSetContainer
-import org.gradle.api.tasks.SourceSetOutput
-import org.gradle.api.tasks.TaskContainer
-import org.gradle.api.tasks.TaskProvider
-import org.gradle.api.tasks.testing.Test
-import org.gradle.api.tasks.testing.TestReport
-import org.gradle.language.base.plugins.LifecycleBasePlugin
-import org.gradle.plugins.ide.idea.model.IdeaModel
-import org.gradle.plugins.ide.idea.model.IdeaModule
-
-import org.grails.gradle.plugin.util.SourceSets
-
-import static 
org.gradle.api.plugins.JavaPlugin.TEST_IMPLEMENTATION_CONFIGURATION_NAME
-import static 
org.gradle.api.plugins.JavaPlugin.TEST_RUNTIME_ONLY_CONFIGURATION_NAME
-import static org.gradle.api.plugins.JavaPlugin.TEST_TASK_NAME
-import static org.gradle.api.tasks.SourceSet.TEST_SOURCE_SET_NAME
 
 /**
- * Gradle plugin for adding separate src/integration-test folder to hold 
integration tests
+ * Gradle plugin for adding separate src/integration-test folder to hold 
integration tests.
+ *
+ * <p>This plugin applies {@link TestPhasesGradlePlugin} and registers the 
default
+ * {@code integrationTest} phase. Additional test phases can be added via the
+ * {@code testPhases} extension.</p>
  *
- * Adds integrationTestImplementation and integrationTestRuntimeOnly 
configurations that extend from testCompileClasspath and testRuntimeClasspath
+ * <p>Adds integrationTestImplementation and integrationTestRuntimeOnly 
configurations
+ * that extend from testCompileClasspath and testRuntimeClasspath.</p>
  *
  */
 @CompileStatic
 class IntegrationTestGradlePlugin implements Plugin<Project> {
 
-    static final String INTEGRATION_TEST_IMPLEMENTATION_CONFIGURATION_NAME = 
'integrationTestImplementation'
-    static final String INTEGRATION_TEST_RUNTIME_ONLY_CONFIGURATION_NAME = 
'integrationTestRuntimeOnly'
     static final String INTEGRATION_TEST_SOURCE_SET_NAME = 'integrationTest'
-    static final String INTEGRATION_TEST_TASK_NAME = 'integrationTest'
-    static final String MERGE_TEST_REPORTS_TASK_NAME = 'mergeTestReports'
-    static final String GRAILS_INTEGRATION_TEST_INDICATOR = 
'is.grails.integration.test'
-
-    boolean ideaIntegration = true
-    String sourceFolderName = 'src/integration-test'
 
     @Override
     void apply(Project project) {
-        File[] sourceDirs = findIntegrationTestSources(project)
-
-        List<File> acceptedSourceDirs = []
-        final SourceSetContainer sourceSets = 
SourceSets.findSourceSets(project)
-        final SourceSetOutput mainSourceSetOutput = 
SourceSets.findMainSourceSet(project).output
-        final SourceSetOutput testSourceSetOutput = 
SourceSets.findSourceSet(project, TEST_SOURCE_SET_NAME).output
-        final SourceSet integrationTest = 
sourceSets.create(INTEGRATION_TEST_SOURCE_SET_NAME)
-        integrationTest.compileClasspath += mainSourceSetOutput + 
testSourceSetOutput
-        integrationTest.runtimeClasspath += mainSourceSetOutput + 
testSourceSetOutput
-
-        for (File srcDir in sourceDirs) {
-            registerSourceDir(integrationTest, srcDir)
-            acceptedSourceDirs.add(srcDir)
-        }
-
-        final File resources = new File(project.projectDir, 'grails-app/conf')
-        integrationTest.resources.srcDir(resources)
-
-        final DependencyHandler dependencies = project.dependencies
-        dependencies.add(INTEGRATION_TEST_IMPLEMENTATION_CONFIGURATION_NAME, 
mainSourceSetOutput)
-        dependencies.add(INTEGRATION_TEST_IMPLEMENTATION_CONFIGURATION_NAME, 
testSourceSetOutput)
-
-        final ConfigurationContainer configurations = project.configurations
-        
configurations.named(INTEGRATION_TEST_IMPLEMENTATION_CONFIGURATION_NAME).configure
 {
-            
it.extendsFrom(configurations.named(TEST_IMPLEMENTATION_CONFIGURATION_NAME).get())
-        }
-        
configurations.named(INTEGRATION_TEST_RUNTIME_ONLY_CONFIGURATION_NAME).configure
 {
-            
it.extendsFrom(configurations.named(TEST_RUNTIME_ONLY_CONFIGURATION_NAME).get())
-        }
-
-        final TaskContainer tasks = project.tasks
-        final TaskProvider<Test> integrationTestTask = 
tasks.register(INTEGRATION_TEST_TASK_NAME, Test)
-        integrationTestTask.configure {
-            it.group = LifecycleBasePlugin.VERIFICATION_GROUP
-            it.testClassesDirs = integrationTest.output.classesDirs
-            it.classpath = integrationTest.runtimeClasspath
-            it.shouldRunAfter(TEST_TASK_NAME)
-            it.finalizedBy(MERGE_TEST_REPORTS_TASK_NAME)
-            it.reports.html.required.set(false)
-            it.maxParallelForks = 1
-            it.testLogging {
-                events('passed')
-            }
-            it.systemProperty(GRAILS_INTEGRATION_TEST_INDICATOR, true)
-        }
-        tasks.named('check').configure {
-            it.dependsOn(integrationTestTask)
-        }
-
-        tasks.register(MERGE_TEST_REPORTS_TASK_NAME, TestReport) {
-            it.mustRunAfter(tasks.withType(Test).toArray())
-            
it.destinationDirectory.set(project.layout.buildDirectory.dir('reports/tests'))
-            // These must point to the binary test results directory generated 
by a Test task instance.
-            // If Test task instances are specified directly, this task would 
depend on them and run them.
-            it.testResults.from(
-                    
project.files("$project.buildDir/test-results/binary/test", 
"$project.buildDir/test-results/binary/integrationTest"),
-                    // different versions of Gradle store these results in 
different places. ugh.
-                    
project.files("$project.buildDir/test-results/test/binary", 
"$project.buildDir/test-results/integrationTest/binary")
-            )
-        }
-
-        if (ideaIntegration) {
-            final File[] files = acceptedSourceDirs.toArray(new 
File[acceptedSourceDirs.size()])
-            integrateIdea(project, files)
-        }
-    }
-
-    @CompileDynamic
-    private void registerSourceDir(SourceSet integrationTest, File srcDir) {
-        integrationTest."${srcDir.name}".srcDir(srcDir)
-    }
-
-    @CompileDynamic
-    private void integrateIdea(Project project, File[] acceptedSourceDirs) {
-        project.pluginManager.withPlugin('idea') { ->
-            def ideaExtension = project.getExtensions().getByType(IdeaModel)
-            ideaExtension.module { IdeaModule it ->
-                it.testSources.from(acceptedSourceDirs)
-            }
-        }
-    }
+        project.pluginManager.apply(TestPhasesGradlePlugin)
 
-    File[] findIntegrationTestSources(Project project) {
-        project.file(sourceFolderName).listFiles({ File file -> 
file.isDirectory() && !file.name.contains('.') } as FileFilter)
+        TestPhasesGradlePlugin phasesPlugin = 
project.plugins.getPlugin(TestPhasesGradlePlugin)
+        phasesPlugin.testPhases.create(INTEGRATION_TEST_SOURCE_SET_NAME)

Review Comment:
   possibly `project.testPhases.create(INTEGRATION_TEST_SOURCE_SET_NAME)` or 
`project.extensions.getByType(NamedDomainObjectContainer).create(...)`



##########
grails-gradle/plugins/src/main/groovy/org/grails/gradle/plugin/core/TestPhasesGradlePlugin.groovy:
##########
@@ -0,0 +1,178 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you 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
+ *
+ *    https://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.
+ */
+package org.grails.gradle.plugin.core
+
+import groovy.transform.CompileDynamic
+import groovy.transform.CompileStatic
+
+import org.gradle.api.NamedDomainObjectContainer
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import org.gradle.api.artifacts.ConfigurationContainer
+import org.gradle.api.artifacts.dsl.DependencyHandler
+import org.gradle.api.tasks.SourceSet
+import org.gradle.api.tasks.SourceSetContainer
+import org.gradle.api.tasks.SourceSetOutput
+import org.gradle.api.tasks.TaskContainer
+import org.gradle.api.tasks.TaskProvider
+import org.gradle.api.tasks.testing.Test
+import org.gradle.api.tasks.testing.TestReport
+import org.gradle.language.base.plugins.LifecycleBasePlugin
+import org.gradle.plugins.ide.idea.model.IdeaModel
+import org.gradle.plugins.ide.idea.model.IdeaModule
+
+import org.grails.gradle.plugin.util.SourceSets
+
+import static 
org.gradle.api.plugins.JavaPlugin.TEST_IMPLEMENTATION_CONFIGURATION_NAME
+import static 
org.gradle.api.plugins.JavaPlugin.TEST_RUNTIME_ONLY_CONFIGURATION_NAME
+import static org.gradle.api.plugins.JavaPlugin.TEST_TASK_NAME
+import static org.gradle.api.tasks.SourceSet.TEST_SOURCE_SET_NAME
+
+/**
+ * Gradle plugin that provides a {@code testPhases} extension for defining
+ * additional test phases (e.g. integrationTest, functionalTest).
+ *
+ * <p>Each {@link TestPhase} added to the container automatically gets its own
+ * source set, dependency configurations, {@link Test} task, and merged test
+ * report contribution.</p>
+ *
+ * @since 2025.0

Review Comment:
   @since 7.1.0



##########
grails-gradle/plugins/src/main/groovy/org/grails/gradle/plugin/core/TestPhasesGradlePlugin.groovy:
##########
@@ -0,0 +1,178 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you 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
+ *
+ *    https://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.
+ */
+package org.grails.gradle.plugin.core
+
+import groovy.transform.CompileDynamic
+import groovy.transform.CompileStatic
+
+import org.gradle.api.NamedDomainObjectContainer
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import org.gradle.api.artifacts.ConfigurationContainer
+import org.gradle.api.artifacts.dsl.DependencyHandler
+import org.gradle.api.tasks.SourceSet
+import org.gradle.api.tasks.SourceSetContainer
+import org.gradle.api.tasks.SourceSetOutput
+import org.gradle.api.tasks.TaskContainer
+import org.gradle.api.tasks.TaskProvider
+import org.gradle.api.tasks.testing.Test
+import org.gradle.api.tasks.testing.TestReport
+import org.gradle.language.base.plugins.LifecycleBasePlugin
+import org.gradle.plugins.ide.idea.model.IdeaModel
+import org.gradle.plugins.ide.idea.model.IdeaModule
+
+import org.grails.gradle.plugin.util.SourceSets
+
+import static 
org.gradle.api.plugins.JavaPlugin.TEST_IMPLEMENTATION_CONFIGURATION_NAME
+import static 
org.gradle.api.plugins.JavaPlugin.TEST_RUNTIME_ONLY_CONFIGURATION_NAME
+import static org.gradle.api.plugins.JavaPlugin.TEST_TASK_NAME
+import static org.gradle.api.tasks.SourceSet.TEST_SOURCE_SET_NAME
+
+/**
+ * Gradle plugin that provides a {@code testPhases} extension for defining
+ * additional test phases (e.g. integrationTest, functionalTest).
+ *
+ * <p>Each {@link TestPhase} added to the container automatically gets its own
+ * source set, dependency configurations, {@link Test} task, and merged test
+ * report contribution.</p>
+ *
+ * @since 2025.0
+ */
+@CompileStatic
+class TestPhasesGradlePlugin implements Plugin<Project> {
+
+    static final String EXTENSION_NAME = 'testPhases'
+    static final String MERGE_TEST_REPORTS_TASK_NAME = 'mergeTestReports'
+
+    NamedDomainObjectContainer<TestPhase> testPhases
+
+    @Override
+    void apply(Project project) {
+        testPhases = project.container(TestPhase)
+        project.extensions.add(EXTENSION_NAME, testPhases)
+
+        testPhases.all { TestPhase phase ->
+            configureTestPhase(project, phase)
+        }
+    }
+
+    private void configureTestPhase(Project project, TestPhase phase) {
+        String phaseName = phase.name
+        String implConfigName = "${phaseName}Implementation"
+        String runtimeOnlyConfigName = "${phaseName}RuntimeOnly"
+
+        File[] sourceDirs = findTestPhaseSources(project, phase)
+        List<File> acceptedSourceDirs = []
+
+        final SourceSetContainer sourceSets = 
SourceSets.findSourceSets(project)
+        final SourceSetOutput mainSourceSetOutput = 
SourceSets.findMainSourceSet(project).output
+        final SourceSetOutput testSourceSetOutput = 
SourceSets.findSourceSet(project, TEST_SOURCE_SET_NAME).output
+        final SourceSet phaseSourceSet = sourceSets.create(phaseName)
+        phaseSourceSet.compileClasspath += mainSourceSetOutput + 
testSourceSetOutput
+        phaseSourceSet.runtimeClasspath += mainSourceSetOutput + 
testSourceSetOutput
+
+        if (sourceDirs != null) {
+            for (File srcDir in sourceDirs) {
+                registerSourceDir(phaseSourceSet, srcDir)
+                acceptedSourceDirs.add(srcDir)
+            }
+        }
+
+        final File resources = new File(project.projectDir, 'grails-app/conf')
+        phaseSourceSet.resources.srcDir(resources)
+
+        final DependencyHandler dependencies = project.dependencies
+        dependencies.add(implConfigName, mainSourceSetOutput)
+        dependencies.add(implConfigName, testSourceSetOutput)
+
+        final ConfigurationContainer configurations = project.configurations
+        configurations.named(implConfigName).configure {
+            
it.extendsFrom(configurations.named(TEST_IMPLEMENTATION_CONFIGURATION_NAME).get())
+        }
+        configurations.named(runtimeOnlyConfigName).configure {
+            
it.extendsFrom(configurations.named(TEST_RUNTIME_ONLY_CONFIGURATION_NAME).get())
+        }
+
+        final TaskContainer tasks = project.tasks
+        final TaskProvider<Test> testTask = tasks.register(phaseName, Test)
+        testTask.configure {
+            it.group = LifecycleBasePlugin.VERIFICATION_GROUP
+            it.testClassesDirs = phaseSourceSet.output.classesDirs
+            it.classpath = phaseSourceSet.runtimeClasspath
+            it.shouldRunAfter(TEST_TASK_NAME)
+            it.finalizedBy(MERGE_TEST_REPORTS_TASK_NAME)
+            it.reports.html.required.set(false)
+            it.maxParallelForks = 1
+            it.testLogging {
+                events('passed')
+            }
+            it.systemProperty(phase.systemPropertyName, true)
+        }
+        tasks.named('check').configure {
+            it.dependsOn(testTask)
+        }
+
+        configureMergeTestReports(project, phaseName)
+
+        if (phase.ideaIntegration) {
+            final File[] files = acceptedSourceDirs.toArray(new 
File[acceptedSourceDirs.size()])
+            integrateIdea(project, files)
+        }
+    }
+
+    private void configureMergeTestReports(Project project, String phaseName) {
+        final TaskContainer tasks = project.tasks
+        if (tasks.names.contains(MERGE_TEST_REPORTS_TASK_NAME)) {
+            tasks.named(MERGE_TEST_REPORTS_TASK_NAME, TestReport).configure {
+                it.testResults.from(
+                        
project.files("${project.buildDir}/test-results/binary/${phaseName}"),
+                        
project.files("${project.buildDir}/test-results/${phaseName}/binary")
+                )
+            }
+        } else {
+            tasks.register(MERGE_TEST_REPORTS_TASK_NAME, TestReport) {
+                it.mustRunAfter(tasks.withType(Test).toArray())

Review Comment:
   maybe `it.mustRunAfter(project.provider { tasks.withType(Test) })` instead 
since tasks.withType(Test).toArray() eagerly snapshots Test tasks at 
registration time.



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