Add test for 'isHMPP' flag

idea/testData/gradle/hierarchicalMultiplatformImport/importHMPPFlag/build.gradle.kts

@@ -0,0 +1,56 @@
+plugins {
+    // TODO parametrization
+    kotlin("multiplatform").version("1.3.40-dev-1840")
+}
+
+repositories {
+    maven("https://kotlin.bintray.com/kotlin-dev")
+    jcenter()
+}
+
+group = "project"
+version = "1.0"
+
+kotlin {
+    jvm() 
+    js()
+    linuxX64()
+
+    sourceSets {
+        val commonMain by getting {
+        }
+
+        val commonTest by getting {
+        }
+
+        val jvmAndJsMain by creating {
+        }
+
+        val jvmAndJsTest by creating {
+        }
+
+        val linuxAndJsMain by creating {
+        }
+        
+        val linuxAndJsTest by creating {
+        }
+
+        jvm().compilations["main"].defaultSourceSet {
+        }
+
+        jvm().compilations["test"].defaultSourceSet {
+        }
+
+        js().compilations["main"].defaultSourceSet {
+        }
+
+        js().compilations["test"].defaultSourceSet {
+        }
+
+        linuxX64().compilations["main"].defaultSourceSet {
+        }
+
+        linuxX64().compilations["test"].defaultSourceSet {
+        }
+    }
+}

idea/testData/gradle/hierarchicalMultiplatformImport/importHMPPFlag/gradle.properties

@@ -0,0 +1 @@
+kotlin.mpp.enableGranularSourceSetsMetadata=true

idea/testData/gradle/hierarchicalMultiplatformImport/importHMPPFlag/settings.gradle.kts

@@ -0,0 +1,10 @@
+pluginManagement {
+    repositories {
+        maven("https://dl.bintray.com/kotlin/kotlin-dev")
+        gradlePluginPortal()
+    }
+}
+
+rootProject.name = "my-app"
+
+enableFeaturePreview("GRADLE_METADATA")