tests for obsolete/fixed issues

#KT-1038 fixed
 #KT-1127 fixed
 #KT-1145 fixed
 #KT-1410 fixed
 #KT-1718 fixed
 #KT-2286 fixed
 #KT-1431 fixed
 #KT-2394 fixed

compiler/testData/diagnostics/tests/inference/regressions/kt1410.kt

@@ -0,0 +1,27 @@
+// KT-1410 Compiler does automatically infer type argument when using variance
+//+JDK
+package d
+
+import java.util.Collection
+import java.util.List
+
+public fun <T> Collection<out T>.filterToMy(result : List<in T>, filter : (T) -> Boolean) : Collection<out T> {
+    for (t in this){
+        if (filter(t)){
+            result.add(t)
+        }
+    }
+    return this
+}
+
+fun foo(result: List<in String>, val collection: Collection<String>, prefix : String){
+    collection.filterToMy(result, {it.startsWith(prefix)})
+}
+
+fun test(result: List<in Any>, val collection: Collection<String>, prefix : String){
+    val c = collection.filterToMy(result, {it.startsWith(prefix)})
+    c: Collection<out String>
+}
+
+//from library
+fun String.startsWith(<!UNUSED_PARAMETER!>prefix<!>: String) : Boolean {<!NO_RETURN_IN_FUNCTION_WITH_BLOCK_BODY!>}<!>