GitHub479_StrictNullChecks.kt

package com.fasterxml.jackson.module.kotlin.test.github.failing

import com.fasterxml.jackson.databind.type.TypeFactory
import com.fasterxml.jackson.module.kotlin.KotlinModule
import com.fasterxml.jackson.module.kotlin.jacksonTypeRef
import com.fasterxml.jackson.module.kotlin.jsonMapper
import com.fasterxml.jackson.module.kotlin.readValue
import org.junit.Test
import kotlin.test.assertEquals

class GitHub479Test {
    val mapper = jsonMapper {
        this.addModule(KotlinModule(strictNullChecks = true))
    }
    val tf: TypeFactory = mapper.typeFactory
    val json = "[1, 2, 3, null]"

    @Test
    fun fullObject() {
        class Data(val list: List<Int>)
        // Throws exception
        assertEquals(
            Data(listOf(1, 0)),
            mapper.readValue("""{"list": [1, null]}""")
        )
    }

    @Test
    fun readValueInline() {
        assertEquals(
            listOf(1, 2, 3, 0),
            mapper.readValue(json)
        )
    }

    @Test
    fun readValueLiteral() {
        assertEquals(
            listOf(1, 2, 3, 0),
            mapper.readValue(json, jacksonTypeRef())
        )
    }

    @Test
    fun typeFactoryCollectionLikeTypeRef() {
        assertEquals(
            listOf(1, 2, 3, 0),
            mapper.readValue(
                json,
                tf.constructCollectionLikeType(List::class.java, tf.constructType(jacksonTypeRef<Int>()))
            )
        )
    }

    @Test
    fun typeFactoryCollectionLikeJavaType() {
        assertEquals(
            listOf(1, 2, 3, 0),
            mapper.readValue(
                json,
                tf.constructCollectionLikeType(List::class.java, Int::class.java)
            )
        )
    }

    @Test
    fun typeFactoryCollectionTypeRef() {
        assertEquals(
            listOf(1, 2, 3, 0),
            mapper.readValue(
                json,
                tf.constructCollectionType(List::class.java, tf.constructType(jacksonTypeRef<Int>()))
            )
        )
    }

    @Test
    fun typeFactoryCollectionJavaType() {
        assertEquals(
            listOf(1, 2, 3, 0),
            mapper.readValue(json, tf.constructCollectionType(List::class.java, Int::class.java))
        )
    }
}