JVM_IR indy-SAM: KT-45069 box lambda 'Unit' return type if needed

compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/intReturnTypeAsNumber.kt

@@ -0,0 +1,16 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+// SAM_CONVERSIONS: INDY
+// FILE: intReturnTypeAsNumber.kt
+
+fun box(): String {
+    val num = Sam { 42 }
+    if (num.get() != 42)
+        return "Failed"
+    return "OK"
+}
+
+// FILE: Sam.java
+public interface Sam {
+    Number get();
+}

compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/nothingReturnTypeAsObject.kt

@@ -0,0 +1,25 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+// SAM_CONVERSIONS: INDY
+// FILE: nothingReturnTypeAsObject.kt
+
+fun interface IFoo<T> {
+    fun foo(): T
+}
+
+fun thr(s: String): Nothing = throw RuntimeException(s)
+
+fun box(): String {
+    try {
+        Sam(::thr).get("OK")
+    } catch (e: RuntimeException) {
+        return e.message!!
+    }
+    return "Failed"
+}
+
+
+// FILE: Sam.java
+public interface Sam {
+    Object get(String s);
+}

compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/nothingReturnTypeAsString.kt

@@ -0,0 +1,25 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+// SAM_CONVERSIONS: INDY
+// FILE: nothingReturnTypeAsString.kt
+
+fun interface IFoo<T> {
+    fun foo(): T
+}
+
+fun thr(s: String): Nothing = throw RuntimeException(s)
+
+fun box(): String {
+    try {
+        Sam(::thr).get("OK")
+    } catch (e: RuntimeException) {
+        return e.message!!
+    }
+    return "Failed"
+}
+
+
+// FILE: Sam.java
+public interface Sam {
+    String get(String s);
+}

compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/nullableNothingReturnTypeAsObject.kt

@@ -0,0 +1,28 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+// SAM_CONVERSIONS: INDY
+// FILE: nullableNothingReturnTypeAsObject.kt
+
+fun interface IFoo<T> {
+    fun foo(): T
+}
+
+var t = "Failed"
+
+fun test(s: String): Nothing? {
+    t = s
+    return null
+}
+
+fun box(): String {
+    val q = Sam(::test).get("OK")
+    if (q != null)
+        return "Failed: $q"
+    return t
+}
+
+
+// FILE: Sam.java
+public interface Sam {
+    Object get(String s);
+}

compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/nullableNothingReturnTypeAsString.kt

@@ -0,0 +1,28 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+// SAM_CONVERSIONS: INDY
+// FILE: nullableNothingReturnTypeAsString.kt
+
+fun interface IFoo<T> {
+    fun foo(): T
+}
+
+var t = "Failed"
+
+fun test(s: String): Nothing? {
+    t = s
+    return null
+}
+
+fun box(): String {
+    val q = Sam(::test).get("OK")
+    if (q != null)
+        return "Failed: $q"
+    return t
+}
+
+
+// FILE: Sam.java
+public interface Sam {
+    String get(String s);
+}

compiler/testData/codegen/box/invokedynamic/sam/functionRefToJavaInterface/voidReturnTypeAsObject.kt

@@ -0,0 +1,20 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+// SAM_CONVERSIONS: INDY
+// FILE: voidReturnTypeAsObject.kt
+var t = "Failed"
+
+fun ok(s: String) { t = s }
+
+fun box(): String {
+    val r = Sam(::ok).get("OK")
+    if (r != Unit) {
+        return "Failed: $r"
+    }
+    return t
+}
+
+// FILE: Sam.java
+public interface Sam {
+    Object get(String s);
+}