[FIR-TEST] Add new testdata generated after changes in previous commit

compiler/testData/diagnostics/tests/smartCasts/castchecks/basicOn.fir.kt

@@ -0,0 +1,36 @@
+// !LANGUAGE: +SafeCastCheckBoundSmartCasts
+
+interface SomeClass {
+    val data: Any?
+}
+
+interface SomeSubClass : SomeClass {
+    val foo: Any?
+}
+
+fun g(a: SomeClass?) {
+    if (a as? SomeSubClass != null) {
+        // 'a' can be cast to SomeSubClass
+        a.hashCode()
+        a.foo
+        (a as? SomeSubClass).<!INAPPLICABLE_CANDIDATE!>foo<!>
+        (a as SomeSubClass).foo
+    }
+    val b = (a as? SomeSubClass)?.foo
+    if (b != null) {
+        // 'a' can be cast to SomeSubClass
+        a.<!INAPPLICABLE_CANDIDATE!>hashCode<!>()
+        a.<!UNRESOLVED_REFERENCE!>foo<!>
+        (a as? SomeSubClass).<!INAPPLICABLE_CANDIDATE!>foo<!>
+        (a as SomeSubClass).foo
+    }
+    val c = a as? SomeSubClass
+    if (c != null) {
+        // 'a' and 'c' can be cast to SomeSubClass
+        a.<!INAPPLICABLE_CANDIDATE!>hashCode<!>()
+        a.<!UNRESOLVED_REFERENCE!>foo<!>
+        (a as? SomeSubClass).<!INAPPLICABLE_CANDIDATE!>foo<!>
+        c.hashCode()
+        c.foo
+    }
+}