Test classpath order of sources vs library dependencies

compiler/testData/classpathOrder/classpathOrder.kt

@@ -0,0 +1,12 @@
+package test
+
+import kotlin.jvm.internal.KObject
+import kotlin.jvm.internal.Intrinsics
+
+fun foo(): String {
+    // This method call should be resolved to kotlin-runtime.jar
+    val r: String = Intrinsics.stringPlus(":", ")")
+
+    // This method call should be resolved to sources
+    return KObject.methodWhichDoesNotExistInKotlinRuntime()
+}