separate compiler and plugin tests

compiler/testData/codegen/extensionFunctions/generic.jet

@@ -0,0 +1,21 @@
+import java.util.*
+
+fun <T> ArrayList<T>.findAll(predicate: fun (T) : Boolean): ArrayList<T> {
+  val result = ArrayList<T>()
+  for(val t in this) {
+    if (predicate(t)) result.add(t)
+  }
+  return result
+}
+
+
+fun box(): String {
+  val list: ArrayList<String> = ArrayList<String>()
+  list.add("Prague")
+  list.add("St.Petersburg")
+  list.add("Moscow")
+  list.add("Munich")
+
+  val m: ArrayList<String> = list.findAll<String>({(name: String) => name.startsWith("M")})
+  return if (m.size() == 2) "OK" else "fail"
+}

compiler/testData/codegen/extensionFunctions/simple.jet

@@ -0,0 +1,3 @@
+fun StringBuilder.first() = this.charAt(0)
+
+fun foo() = StringBuilder("foo").first()

compiler/testData/codegen/extensionFunctions/whenFail.jet

@@ -0,0 +1,14 @@
+fun StringBuilder.takeFirst(): Char {
+  if (this.length() == 0) return 0.chr
+  val c = this.charAt(0)
+  this.deleteCharAt(0)
+  return c
+}
+
+fun foo(expr: StringBuilder): Int {
+  val c = expr.takeFirst()
+  when(c) {
+    0.chr => throw Exception("zero")
+    else => throw Exception("nonzero" + c)
+  }
+}