Gradle: Support 'expectedBy' configuration

idea/idea-gradle/tests/org/jetbrains/kotlin/gradle/MultiplatformProjectImportingTest.kt

@@ -66,6 +66,52 @@ class MultiplatformProjectImportingTest : GradleImportingTestCase() {
         assertModuleModuleDepScope("js_test", "common_test", DependencyScope.COMPILE)
     }
 
+    @Test
+    fun testPlatformToCommonExpectedByDependency() {
+        createProjectSubFile("settings.gradle", "include ':common', ':jvm', ':js'")
+
+        val kotlinVersion = "1.2.0-beta-74"
+
+        createProjectSubFile("build.gradle", """
+             buildscript {
+                repositories {
+                    mavenCentral()
+                    maven { url 'http://dl.bintray.com/kotlin/kotlin-dev' }
+                }
+
+                dependencies {
+                    classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion")
+                }
+            }
+
+            project('common') {
+                apply plugin: 'kotlin-platform-common'
+            }
+
+            project('jvm') {
+                apply plugin: 'kotlin-platform-jvm'
+
+                dependencies {
+                    expectedBy project(':common')
+                }
+            }
+
+            project('js') {
+                apply plugin: 'kotlin-platform-js'
+
+                dependencies {
+                    expectedBy project(':common')
+                }
+            }
+        """)
+
+        importProject()
+        assertModuleModuleDepScope("jvm_main", "common_main", DependencyScope.COMPILE)
+        assertModuleModuleDepScope("jvm_test", "common_test", DependencyScope.COMPILE)
+        assertModuleModuleDepScope("js_main", "common_main", DependencyScope.COMPILE)
+        assertModuleModuleDepScope("js_test", "common_test", DependencyScope.COMPILE)
+    }
+
     @Test
     fun testPlatformToCommonDependencyRoot() {
         createProjectSubFile("settings.gradle", "rootProject.name = 'foo'\ninclude ':jvm', ':js'")

idea/kotlin-gradle-tooling/src/KotlinGradleModelBuilder.kt

@@ -18,7 +18,9 @@ package org.jetbrains.kotlin.gradle
 
 import org.gradle.api.Project
 import org.gradle.api.Task
+import org.gradle.api.artifacts.Dependency
 import org.gradle.api.artifacts.ProjectDependency
+import org.jetbrains.kotlin.utils.addToStdlib.firstIsInstanceOrNull
 import org.jetbrains.plugins.gradle.tooling.ErrorMessageBuilder
 import org.jetbrains.plugins.gradle.tooling.ModelBuilderService
 import java.io.File
@@ -87,9 +89,10 @@ class KotlinGradleModelBuilder : AbstractKotlinGradleModelBuilder() {
     override fun canBuild(modelName: String?): Boolean = modelName == KotlinGradleModel::class.java.name
 
     private fun getImplements(project: Project): Project? {
-        val implementsConfiguration = project.configurations.run { findByName("implement") } ?: return null
-        val implementsProjectDependency = implementsConfiguration.dependencies.filterIsInstance<ProjectDependency>().firstOrNull()
-        return implementsProjectDependency?.dependencyProject
+        return listOf("expectedBy", "implement")
+                .flatMap { project.configurations.findByName(it)?.dependencies ?: emptySet<Dependency>() }
+                .firstIsInstanceOrNull<ProjectDependency>()
+                ?.dependencyProject
     }
 
     // see GradleProjectResolverUtil.getModuleId() in IDEA codebase