Changed extension in parsing test data (jet -> kt)

compiler/testData/psi/When.kt

@@ -0,0 +1,69 @@
+fun foo() {
+  return false
+
+  fun a() = {when(x) { is a -> b }}
+
+  // foo
+  fun b() {}
+
+}
+
+fun foo() {
+  when (e) {
+                          
+  }
+  when (e) {
+    is a -> foo
+  }
+  when (e) {
+    is Tree<a, b> -> foo
+    null -> foo
+    1 -> foo
+    A.b -> foo
+    1.0 -> foo
+    'c' -> foo
+    "sadfsa" -> foo
+    """ddd""" -> foo
+  }
+  when (when(when (e) {
+
+  }) {
+
+  }) {
+
+  }
+}
+
+fun foo() {
+  when (val a = e) {
+    is Tree -> c
+    is a.a<a, b> -> c
+    is package.a.a<a, b> -> c
+    in 1..2 -> dsf
+    !in 2 -> sd
+    !is t -> d
+    (foo) -> Bar -> fgpp
+    is Pair<Int, Int> -> 2
+    else -> foo
+  }
+}
+
+fun foo() {
+  when (val a = e) {
+    is Tree,
+    is a<a, b> -> c
+    1, foo(), bar, 2 + 3,
+    is a<a, b> -> c
+  }
+}
+
+fun whenWithoutCondition(i : Int) {
+  val j = 12
+  when {
+    3 -> -1
+    i == 3 -> -1
+    j < i, j == i -> -1
+    i is Int -> 1
+    else -> 2
+  }
+}