Tests for file structure

idea/testData/structureView/fileStructure/EmptyFile.after

@@ -0,0 +1 @@
++EmptyFile.kt

idea/testData/structureView/fileStructure/InheritedMembers.after

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+-InheritedMembers.kt
+ Test (<root>)

idea/testData/structureView/fileStructure/InheritedMembers.kt

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+class Test {
+
+}

idea/testData/structureView/fileStructure/SeveralClasses.after

@@ -0,0 +1,5 @@
+-SeveralClasses.kt
+ A (<root>)
+ B (<root>)
+ Some (<root>)
+ Other (<root>)

idea/testData/structureView/fileStructure/SeveralClasses.kt

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+trait A
+open class B
+class Some: B(), A
+class Other: A

idea/testData/structureView/fileStructure/Simple.after

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+-Simple.kt
+ -Test (<root>)
+  str:kotlin.String
+  some:kotlin.Int
+  foo():kotlin.Int
+  other():kotlin.Unit

idea/testData/structureView/fileStructure/Simple.kt

@@ -0,0 +1,5 @@
+class Test(val str: String) {
+    private val some = 1
+    protected fun foo() = some
+    public fun other() {}
+}