Converter tests:

Use generated tests approach in converter tests

Introduce two seperate generated test cases of each of configurations, all tests are generated in both test cases
Test data for plugin configuration has extension "ide.kt", for basic configuration "*.kt"
Test data file is used to determine type of the test (file/class/expression/...) instead of directory, all test data is moved accordingly
Add abstract base classes for generated tests
Rename test folder "file" to "misc" (for the lack of imagination)

j2k/tests/testData/ast/annotations/jetbrainsNotNull.ide.kt

@@ -0,0 +1,20 @@
+package test
+public open class Test(str : String) {
+var myStr : String = "String2"
+public open fun sout(str : String) : Unit {
+System.out.println(str)
+}
+public open fun dummy(str : String) : String {
+return str
+}
+public open fun test() : Unit {
+sout("String")
+val test = "String2"
+sout(test)
+sout(dummy(test))
+Test(test)
+}
+{
+myStr = str
+}
+}

j2k/tests/testData/ast/annotations/jetbrainsNotNull.jav

@@ -1,3 +1,4 @@
+//file
 package test;
 
 import org.jetbrains.annotations.NotNull;

j2k/tests/testData/ast/annotations/jetbrainsNotNullChainExpr.ide.kt

@@ -0,0 +1,17 @@
+package test
+open class Foo() {
+open fun execute() : Unit {
+}
+}
+open class Bar() {
+var fooNotNull : Foo = Foo()
+var fooNullable : Foo = null
+}
+open class Test() {
+public open fun test(barNotNull : Bar, barNullable : Bar) : Unit {
+barNotNull.fooNotNull.execute()
+barNotNull.fooNullable.execute()
+barNullable.fooNotNull.execute()
+barNullable.fooNullable.execute()
+}
+}

j2k/tests/testData/ast/annotations/jetbrainsNotNullChainExpr.jav

@@ -1,3 +1,4 @@
+//file
 package test;
 
 import org.jetbrains.annotations.NotNull;