Add another test that shows dependencies can be modified from beforeR…

…esolve

subprojects/dependency-management/src/integTest/groovy/org/gradle/integtests/resolve/BeforeResolveIntegrationTest.groovy

@@ -22,6 +22,79 @@ import org.gradle.util.TestPrecondition
 import spock.lang.Issue
 
 class BeforeResolveIntegrationTest extends AbstractDependencyResolutionTest {
+    def "can use beforeResolve hook to modify add dependencies"() {
+        mavenRepo.module('org.test', 'dep1', '1.0').publish()
+        mavenRepo.module('org.test', 'dep2', '1.0').publish()
+        mavenRepo.module('org.test', 'dep3', '1.0').publish()
+
+        buildFile << """
+repositories {
+    maven { url '${mavenRepo.uri}' }
+}
+configurations {
+    conf
+}
+dependencies {
+    conf 'org.test:dep1:1.0'
+}
+
+configurations.conf.incoming.beforeResolve { resolvableDependencies ->
+    project.dependencies.add('conf', 'org.test:dep2:1.0')
+}
+
+task printFiles {
+    def conf = configurations.conf
+    doLast {
+        def files = conf.collect { it.name }
+        println files
+        assert files == ['dep1-1.0.jar', 'dep2-1.0.jar']
+    }
+}
+
+task printFilesWithConfigurationInput {
+    dependsOn configurations.conf
+    def conf = configurations.conf
+    doLast {
+        def files = conf.collect { it.name }
+        println files
+        assert files == ['dep1-1.0.jar', 'dep2-1.0.jar']
+    }
+}
+
+task copyFiles(type:Copy) {
+    from configurations.conf
+    into 'libs'
+}
+"""
+
+        when:
+        succeeds 'printFiles'
+
+        then:
+        outputContains('[dep1-1.0.jar, dep2-1.0.jar]')
+
+        when:
+        succeeds 'printFilesWithConfigurationInput'
+
+        then:
+        outputContains('[dep1-1.0.jar, dep2-1.0.jar]')
+
+        when:
+        succeeds 'copyFiles'
+        then:
+        file('libs').assertHasDescendants('dep1-1.0.jar', 'dep2-1.0.jar')
+
+        when:
+        buildFile << """
+// add another dependency to conf
+configurations.conf.incoming.beforeResolve { resolvableDependencies ->
+    project.dependencies.add('conf', 'org.test:dep3:1.0')
+}
+"""
+        succeeds "copyFiles"
+        then:
+        file('libs').assertHasDescendants('dep1-1.0.jar', 'dep2-1.0.jar', 'dep3-1.0.jar')
+    }
 
     @Issue("gradle/gradle#2480")
     def "can use beforeResolve hook to modify dependency excludes"() {