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

compiler/testData/diagnostics/tests/inference/mapFunction.fir.kt

@@ -0,0 +1,35 @@
+// !CHECK_TYPE
+
+package a
+
+//+JDK
+import java.util.*
+
+fun foo() {
+    val v = array(1, 2, 3)
+
+    val u = v map { it * 2 }
+
+    checkSubtype<List<Int>>(u)
+
+    val a = 1..5
+
+    val b = a.map { it * 2 }
+
+    checkSubtype<List<Int>>(b)
+
+    //check for non-error types
+    <!INAPPLICABLE_CANDIDATE!>checkSubtype<!><String>(u)
+    <!INAPPLICABLE_CANDIDATE!>checkSubtype<!><String>(b)
+}
+
+
+// ---------------------
+// copy from kotlin util (but with `infix` modifier on `map`)
+
+@Suppress("UNCHECKED_CAST")
+fun <T> array(vararg t : T) : Array<T> = t as Array<T>
+
+infix fun <T, R> Array<T>.map(transform : (T) -> R) : List<R> {}
+
+infix fun <T, R> Iterable<T>.map(transform : (T) -> R) : List<R> {}