Renamed *.jet to *.kt in test data of JetPsiCheckerTest.

idea/testData/checker/OverridesAndGenerics.kt

@@ -0,0 +1,35 @@
+    trait MyTrait<T> {
+        fun foo(t: T) : T
+    }
+
+    abstract class MyAbstractClass<T> {
+        abstract fun bar(t: T) : T
+    }
+
+    open class MyGenericClass<T> : MyTrait<T>, MyAbstractClass<T>() {
+        override fun foo(t: T) = t
+        override fun bar(t: T) = t
+    }
+
+    class MyChildClass : MyGenericClass<Int>() {}
+    class MyChildClass1<T> : MyGenericClass<T>() {}
+    class MyChildClass2<T> : MyGenericClass<T>() {
+        <error>fun foo(t: T)</error> = t
+        override fun bar(t: T) = t
+    }
+
+    open class MyClass : MyTrait<Int>, MyAbstractClass<String>() {
+        override fun foo(t: Int) = t
+        override fun bar(t: String) = t
+    }
+
+    class <error>MyIllegalGenericClass1</error><T> : MyTrait<T>, MyAbstractClass<T>() {}
+    class <error>MyIllegalGenericClass2</error><T, R> : MyTrait<T>, MyAbstractClass<R>() {
+        <error>override</error> fun foo(r: R) = r
+    }
+    class <error>MyIllegalClass1</error> : MyTrait<Int>, MyAbstractClass<String>() {}
+
+    class <error>MyIllegalClass2</error><T> : MyTrait<Int>, MyAbstractClass<Int>() {
+        fun foo(t: T) = t
+        fun bar(t: T) = t
+    }