diff --git a/backend.native/tests/codegen/intrinsics/interop_convert.kt b/backend.native/tests/codegen/intrinsics/interop_convert.kt
index df1259b761c..722428b53b6 100644
--- a/backend.native/tests/codegen/intrinsics/interop_convert.kt
+++ b/backend.native/tests/codegen/intrinsics/interop_convert.kt
@@ -17,4 +17,157 @@ fun testNI() {
 
     assertNull(signExtendShortToIntOrNull(4, false))
     assertEquals(5, signExtendShortToIntOrNull(5, true))
-}
\ No newline at end of file
+}
+
+@Test
+fun testConvertSimple() {
+    assertEquals(1, 257.convert<Byte>())
+    assertEquals(255u, (-1).convert<UByte>())
+    assertEquals(0, Long.MIN_VALUE.narrow<Int>())
+    assertEquals(-1, Long.MAX_VALUE.narrow<Short>())
+    assertEquals(-1L, (-1).signExtend<Long>())
+}
+
+@Test
+fun convertAll() {
+    val values = mutableListOf<Long>()
+    for (value in listOf(
+            0L,
+            Byte.MIN_VALUE.toLong(), Byte.MAX_VALUE.toLong(), UByte.MAX_VALUE.toLong(),
+            Short.MIN_VALUE.toLong(), Short.MAX_VALUE.toLong(), UShort.MAX_VALUE.toLong(),
+            Int.MIN_VALUE.toLong(), Int.MAX_VALUE.toLong(), UInt.MAX_VALUE.toLong(),
+            Long.MIN_VALUE.toLong(), Long.MAX_VALUE.toLong(), ULong.MAX_VALUE.toLong()
+    )) {
+        values.add(value - 1)
+        values.add(value)
+        values.add(value + 1)
+    }
+
+    for (value in values) {
+        testConvertAll(value.toByte())
+        testConvertAll(value.toUByte())
+        testConvertAll(value.toShort())
+        testConvertAll(value.toUShort())
+        testConvertAll(value.toInt())
+        testConvertAll(value.toUInt())
+        testConvertAll(value.toLong())
+        testConvertAll(value.toULong())
+    }
+}
+
+fun testConvertAll(value: Byte) {
+    assertEquals(value.toByte(), value.convert<Byte>())
+    assertEquals(value.toUByte(), value.convert<UByte>())
+    assertEquals(value.toShort(), value.convert<Short>())
+    assertEquals(value.toUShort(), value.convert<UShort>())
+    assertEquals(value.toInt(), value.convert<Int>())
+    assertEquals(value.toUInt(), value.convert<UInt>())
+    assertEquals(value.toLong(), value.convert<Long>())
+    assertEquals(value.toULong(), value.convert<ULong>())
+
+    assertEquals(value.toByte(), value.narrow<Byte>())
+
+    assertEquals(value.toByte(), value.signExtend<Byte>())
+    assertEquals(value.toShort(), value.signExtend<Short>())
+    assertEquals(value.toInt(), value.signExtend<Int>())
+    assertEquals(value.toLong(), value.signExtend<Long>())
+}
+
+fun testConvertAll(value: Short) {
+    assertEquals(value.toByte(), value.convert<Byte>())
+    assertEquals(value.toUByte(), value.convert<UByte>())
+    assertEquals(value.toShort(), value.convert<Short>())
+    assertEquals(value.toUShort(), value.convert<UShort>())
+    assertEquals(value.toInt(), value.convert<Int>())
+    assertEquals(value.toUInt(), value.convert<UInt>())
+    assertEquals(value.toLong(), value.convert<Long>())
+    assertEquals(value.toULong(), value.convert<ULong>())
+
+    assertEquals(value.toByte(), value.narrow<Byte>())
+    assertEquals(value.toShort(), value.narrow<Short>())
+
+    assertEquals(value.toShort(), value.signExtend<Short>())
+    assertEquals(value.toInt(), value.signExtend<Int>())
+    assertEquals(value.toLong(), value.signExtend<Long>())
+}
+
+fun testConvertAll(value: Int) {
+    assertEquals(value.toByte(), value.convert<Byte>())
+    assertEquals(value.toUByte(), value.convert<UByte>())
+    assertEquals(value.toShort(), value.convert<Short>())
+    assertEquals(value.toUShort(), value.convert<UShort>())
+    assertEquals(value.toInt(), value.convert<Int>())
+    assertEquals(value.toUInt(), value.convert<UInt>())
+    assertEquals(value.toLong(), value.convert<Long>())
+    assertEquals(value.toULong(), value.convert<ULong>())
+
+    assertEquals(value.toByte(), value.narrow<Byte>())
+    assertEquals(value.toShort(), value.narrow<Short>())
+    assertEquals(value.toInt(), value.narrow<Int>())
+
+    assertEquals(value.toInt(), value.signExtend<Int>())
+    assertEquals(value.toLong(), value.signExtend<Long>())
+}
+
+fun testConvertAll(value: Long) {
+    assertEquals(value.toByte(), value.convert<Byte>())
+    assertEquals(value.toUByte(), value.convert<UByte>())
+    assertEquals(value.toShort(), value.convert<Short>())
+    assertEquals(value.toUShort(), value.convert<UShort>())
+    assertEquals(value.toInt(), value.convert<Int>())
+    assertEquals(value.toUInt(), value.convert<UInt>())
+    assertEquals(value.toLong(), value.convert<Long>())
+    assertEquals(value.toULong(), value.convert<ULong>())
+
+    assertEquals(value.toByte(), value.narrow<Byte>())
+    assertEquals(value.toShort(), value.narrow<Short>())
+    assertEquals(value.toInt(), value.narrow<Int>())
+    assertEquals(value.toLong(), value.narrow<Long>())
+
+    assertEquals(value.toLong(), value.signExtend<Long>())
+}
+
+
+fun testConvertAll(value: UByte) {
+    assertEquals(value.toByte(), value.convert<Byte>())
+    assertEquals(value.toUByte(), value.convert<UByte>())
+    assertEquals(value.toShort(), value.convert<Short>())
+    assertEquals(value.toUShort(), value.convert<UShort>())
+    assertEquals(value.toInt(), value.convert<Int>())
+    assertEquals(value.toUInt(), value.convert<UInt>())
+    assertEquals(value.toLong(), value.convert<Long>())
+    assertEquals(value.toULong(), value.convert<ULong>())
+}
+
+fun testConvertAll(value: UShort) {
+    assertEquals(value.toByte(), value.convert<Byte>())
+    assertEquals(value.toUByte(), value.convert<UByte>())
+    assertEquals(value.toShort(), value.convert<Short>())
+    assertEquals(value.toUShort(), value.convert<UShort>())
+    assertEquals(value.toInt(), value.convert<Int>())
+    assertEquals(value.toUInt(), value.convert<UInt>())
+    assertEquals(value.toLong(), value.convert<Long>())
+    assertEquals(value.toULong(), value.convert<ULong>())
+}
+
+fun testConvertAll(value: UInt) {
+    assertEquals(value.toByte(), value.convert<Byte>())
+    assertEquals(value.toUByte(), value.convert<UByte>())
+    assertEquals(value.toShort(), value.convert<Short>())
+    assertEquals(value.toUShort(), value.convert<UShort>())
+    assertEquals(value.toInt(), value.convert<Int>())
+    assertEquals(value.toUInt(), value.convert<UInt>())
+    assertEquals(value.toLong(), value.convert<Long>())
+    assertEquals(value.toULong(), value.convert<ULong>())
+}
+
+fun testConvertAll(value: ULong) {
+    assertEquals(value.toByte(), value.convert<Byte>())
+    assertEquals(value.toUByte(), value.convert<UByte>())
+    assertEquals(value.toShort(), value.convert<Short>())
+    assertEquals(value.toUShort(), value.convert<UShort>())
+    assertEquals(value.toInt(), value.convert<Int>())
+    assertEquals(value.toUInt(), value.convert<UInt>())
+    assertEquals(value.toLong(), value.convert<Long>())
+    assertEquals(value.toULong(), value.convert<ULong>())
+}