CODEWITHSUNDEEP
kotlinmockkjunit-jupiter
Naruto Sempai
Naruto Sempai

Reputation: 7201

How to mock ObjectMapper.readValue() using mockk

There was a similar question asked about Mockito here

I have a situation where I would like to mock out readValue in the following line

 val animal: Animal = objectMapper.readValue(String(message.body))

I tried

@Test
fun `test you filthy animal`() {
    val animal = Animal("bird")

    every {
        objectMapper.readValue(any<String>())
    } returns animal
}

...but I keep getting the following error:

Not enough information to infer type variable T

I have been scratching my head trying to figure it out in Mockk.

Upvotes: 5

Views: 3984

Answers (1)

Naruto Sempai
Naruto Sempai

Reputation: 7201

I ended up figuring it out:

import org.junit.jupiter.api.Test

@Test
fun `test you filthy animal`() {
    val animal = Animal("bird")

    every {
        objectMapper.readValue<Animal>(any<String>())
    } returns animal
}

Edit: Later I ran into more issues that were resolved with the following:

every { 
   objectMapper.readValue(any<String>(), any<TypeReference<Animal>>()) 
} returns animal

Upvotes: 8

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