[NI] Improve completing calls with multiple postponed arguments

#KT-27999 Fixed
#KT-30244 Fixed
#KT-31102 Fixed

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

@@ -0,0 +1,32 @@
+// !LANGUAGE: +NewInference
+// !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_VARIABLE -UNUSED_ANONYMOUS_PARAMETER
+
+fun <K> select(x: K, y: K): K = x
+fun <K> select3(x: K, y: K, z: K): K = x
+
+interface A
+interface B
+
+fun test() {
+    select3(
+        { a: A, b: A -> Unit },
+        { b, a -> Unit },
+        { <!UNRESOLVED_REFERENCE!>it<!>; Unit }
+    )
+}
+
+// ISSUE: KT-27999
+// ISSUE: KT-30244
+fun test_1() {
+    select(
+        { 1 },
+        { "" }
+    )
+}
+
+// ISSUE: KT-31102
+fun bar(): Int = 1
+fun test_2(x: Int) {
+    val f1: () -> Int = select({ bar() }, ::bar) // TYPE_MISMATCH on lambda
+    val f2 = select({ bar() }, ::bar) // Same
+}

compiler/testData/diagnostics/tests/inference/completionOfMultipleLambdas.kt

@@ -0,0 +1,32 @@
+// !LANGUAGE: +NewInference
+// !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_VARIABLE -UNUSED_ANONYMOUS_PARAMETER
+
+fun <K> select(x: K, y: K): K = x
+fun <K> select3(x: K, y: K, z: K): K = x
+
+interface A
+interface B
+
+fun test() {
+    <!DEBUG_INFO_EXPRESSION_TYPE("(A, A) -> kotlin.Unit")!>select3(
+        { a: A, b: A -> Unit },
+        { b, a -> Unit },
+        <!EXPECTED_PARAMETERS_NUMBER_MISMATCH!>{<!> <!UNRESOLVED_REFERENCE!>it<!>; Unit }
+    )<!>
+}
+
+// ISSUE: KT-27999
+// ISSUE: KT-30244
+fun test_1() {
+    <!DEBUG_INFO_EXPRESSION_TYPE("() -> {Comparable<{Int & String}> & java.io.Serializable}")!>select(
+        { 1 },
+        { "" }
+    )<!>
+}
+
+// ISSUE: KT-31102
+fun bar(): Int = 1
+fun test_2(x: Int) {
+    val f1: () -> Int = select({ bar() }, ::bar) // TYPE_MISMATCH on lambda
+    val f2 = select({ bar() }, ::bar) // Same
+}

compiler/testData/diagnostics/tests/inference/completionOfMultipleLambdas.txt

@@ -0,0 +1,20 @@
+package
+
+public fun bar(): kotlin.Int
+public fun </*0*/ K> select(/*0*/ x: K, /*1*/ y: K): K
+public fun </*0*/ K> select3(/*0*/ x: K, /*1*/ y: K, /*2*/ z: K): K
+public fun test(): kotlin.Unit
+public fun test_1(): kotlin.Unit
+public fun test_2(/*0*/ x: kotlin.Int): kotlin.Unit
+
+public interface A {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public interface B {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}

compiler/testData/diagnostics/tests/inference/nothingType/lambdaNothingAndExpectedType.kt

@@ -5,8 +5,8 @@ fun <K> select2(x: K, y: K): K = TODO()
 fun <K> select3(x: K, y: K, z: K): K = TODO()
 
 fun test2(f: ((String) -> Int)?) {
-    val a0: ((Int) -> Int)? = select2(<!TYPE_MISMATCH!>{ <!OI;CANNOT_INFER_PARAMETER_TYPE!>it<!> -> <!OI;DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>it<!> }<!>, null)
-    val b0: ((Nothing) -> Unit)? = select2(<!TYPE_MISMATCH!>{ <!OI;CANNOT_INFER_PARAMETER_TYPE!>it<!> -> <!OI;DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>it<!> }<!>, null)
+    val a0: ((Int) -> Int)? = select2(<!OI;TYPE_MISMATCH!>{ <!OI;CANNOT_INFER_PARAMETER_TYPE!>it<!> -> <!OI;DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>it<!> }<!>, null)
+    val b0: ((Nothing) -> Unit)? = select2(<!OI;TYPE_MISMATCH!>{ <!OI;CANNOT_INFER_PARAMETER_TYPE!>it<!> -> <!NI;UNUSED_EXPRESSION, OI;DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>it<!> }<!>, null)
 
     select3({ it.length }, f, null)
 }