Kotlin Facet: Fix detection of source set name by Gradle compile task

#KT-17492 Fixed

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

@@ -24,7 +24,6 @@ import org.jetbrains.plugins.gradle.tooling.ModelBuilderService
 import java.io.Serializable
 import java.lang.Exception
 import java.lang.reflect.InvocationTargetException
-import java.lang.reflect.Method
 import java.util.*
 import kotlin.collections.HashSet
 
@@ -104,18 +103,6 @@ class KotlinGradleModelBuilder : ModelBuilderService {
         return result
     }
 
-    private fun Class<*>.findGetterMethod(name: String): Method? {
-        generateSequence(this) { it.superclass }.forEach {
-            try {
-                return it.getDeclaredMethod(name)
-            }
-            catch(e: Exception) {
-                // Check next super class
-            }
-        }
-        return null
-    }
-
     @Suppress("UNCHECKED_CAST")
     private fun collectCompilerArguments(
             compileTask: Task,
@@ -124,7 +111,7 @@ class KotlinGradleModelBuilder : ModelBuilderService {
     ) {
         val taskClass = compileTask::class.java
         val sourceSetName = try {
-            taskClass.findGetterMethod("getSourceSetName\$kotlin_gradle_plugin")?.invoke(compileTask) as? String
+            taskClass.methods.firstOrNull { it.name.startsWith("getSourceSetName") && it.parameterCount == 0 }?.invoke(compileTask) as? String
         } catch (e : InvocationTargetException) {
             null // can be thrown if property is not initialized yet
         } ?: "main"

idea/tests/org/jetbrains/kotlin/idea/codeInsight/gradle/GradleFacetImportTest.kt

@@ -90,6 +90,67 @@ class GradleFacetImportTest : GradleImportingTestCase() {
         }
     }
 
+    @Test
+    fun testJvmImport_1_1_2() {
+        createProjectSubFile("build.gradle", """
+            group 'Again'
+            version '1.0-SNAPSHOT'
+
+            buildscript {
+                repositories {
+                    mavenCentral()
+                    maven {
+                        url 'http://dl.bintray.com/kotlin/kotlin-dev'
+                    }
+                }
+
+                dependencies {
+                    classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.1.2-5")
+                }
+            }
+
+            apply plugin: 'kotlin'
+
+            repositories {
+                mavenCentral()
+                maven { url 'http://dl.bintray.com/kotlin/kotlin-dev' }
+            }
+
+            dependencies {
+                compile "org.jetbrains.kotlin:kotlin-stdlib:1.1.2-5"
+            }
+
+            compileKotlin {
+                kotlinOptions.jvmTarget = "1.7"
+                kotlinOptions.freeCompilerArgs = ["-Xsingle-module", "-Xdump-declarations-to", "tmp"]
+            }
+
+            compileTestKotlin {
+                kotlinOptions.jvmTarget = "1.6"
+                kotlinOptions.apiVersion = "1.0"
+                kotlinOptions.freeCompilerArgs = ["-Xdump-declarations-to", "tmpTest"]
+            }
+        """)
+        importProject()
+
+        with (facetSettings) {
+            Assert.assertEquals("1.1", languageLevel!!.versionString)
+            Assert.assertEquals("1.1", apiLevel!!.versionString)
+            Assert.assertEquals(TargetPlatformKind.Jvm[JvmTarget.JVM_1_8], targetPlatformKind)
+            Assert.assertEquals("1.7", (compilerArguments as K2JVMCompilerArguments).jvmTarget)
+            Assert.assertEquals("-Xdump-declarations-to=tmp -Xsingle-module",
+                                compilerSettings!!.additionalArguments)
+        }
+        with (testFacetSettings) {
+            Assert.assertEquals("1.1", languageLevel!!.versionString)
+            Assert.assertEquals("1.0", apiLevel!!.versionString)
+            Assert.assertEquals(TargetPlatformKind.Jvm[JvmTarget.JVM_1_6], targetPlatformKind)
+            Assert.assertEquals("1.6", (compilerArguments as K2JVMCompilerArguments).jvmTarget)
+            Assert.assertEquals("-Xdump-declarations-to=tmpTest",
+                                compilerSettings!!.additionalArguments)
+        }
+    }
+
     @Test
     fun testJvmImportWithCustomSourceSets() {
         createProjectSubFile("build.gradle", """
@@ -159,6 +220,78 @@ class GradleFacetImportTest : GradleImportingTestCase() {
         }
     }
 
+    @Test
+    fun testJvmImportWithCustomSourceSets_1_1_2() {
+        createProjectSubFile("build.gradle", """
+            group 'Again'
+            version '1.0-SNAPSHOT'
+
+            buildscript {
+                repositories {
+                    mavenCentral()
+                    maven { url 'http://dl.bintray.com/kotlin/kotlin-dev' }
+                }
+
+                dependencies {
+                    classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.1.2-5")
+                }
+            }
+
+            apply plugin: 'kotlin'
+
+            repositories {
+                mavenCentral()
+                maven { url 'http://dl.bintray.com/kotlin/kotlin-dev' }
+            }
+
+            sourceSets {
+                myMain {
+                    kotlin {
+                        srcDir 'src'
+                    }
+                }
+                myTest {
+                    kotlin {
+                        srcDir 'test'
+                    }
+                }
+            }
+
+            dependencies {
+                compile "org.jetbrains.kotlin:kotlin-stdlib:1.1.2-5"
+            }
+
+            compileMyMainKotlin {
+                kotlinOptions.jvmTarget = "1.7"
+                kotlinOptions.freeCompilerArgs = ["-Xsingle-module", "-Xdump-declarations-to", "tmp"]
+            }
+
+            compileMyTestKotlin {
+                kotlinOptions.jvmTarget = "1.6"
+                kotlinOptions.apiVersion = "1.0"
+                kotlinOptions.freeCompilerArgs = ["-Xdump-declarations-to", "tmpTest"]
+            }
+        """)
+        importProject()
+
+        with (facetSettings("project_myMain")) {
+            Assert.assertEquals("1.1", languageLevel!!.versionString)
+            Assert.assertEquals("1.1", apiLevel!!.versionString)
+            Assert.assertEquals(TargetPlatformKind.Jvm[JvmTarget.JVM_1_8], targetPlatformKind)
+            Assert.assertEquals("1.7", (compilerArguments as K2JVMCompilerArguments).jvmTarget)
+            Assert.assertEquals("-Xdump-declarations-to=tmp -Xsingle-module",
+                                compilerSettings!!.additionalArguments)
+        }
+        with (facetSettings("project_myTest")) {
+            Assert.assertEquals("1.1", languageLevel!!.versionString)
+            Assert.assertEquals("1.0", apiLevel!!.versionString)
+            Assert.assertEquals(TargetPlatformKind.Jvm[JvmTarget.JVM_1_6], targetPlatformKind)
+            Assert.assertEquals("1.6", (compilerArguments as K2JVMCompilerArguments).jvmTarget)
+            Assert.assertEquals("-Xdump-declarations-to=tmpTest",
+                                compilerSettings!!.additionalArguments)
+        }
+    }
+
     @Test
     fun testCoroutineImportByOptions() {
         createProjectSubFile("build.gradle", """