Spring controller test failing with 404 error

Question

I am using spring rest docs to create the documentation, my problem is that the test is working when I have both the test and the controller in the same folder:

But when I try to change the controller from this package and move it to the controllers one I am getting the next issue:

MockHttpServletRequest:
      HTTP Method = GET
      Request URI = /
       Parameters = {}
          Headers = {}
             Body = <no character encoding set>
    Session Attrs = {}

Handler:
             Type = org.springframework.web.servlet.resource.ResourceHttpRequestHandler

Async:
    Async started = false
     Async result = null

Resolved Exception:
             Type = null

ModelAndView:
        View name = null
             View = null
            Model = null

FlashMap:
       Attributes = null

MockHttpServletResponse:
           Status = 404
    Error message = null
          Headers = {}
     Content type = null
             Body = 
    Forwarded URL = null
   Redirected URL = null
          Cookies = []

MockHttpServletRequest:
      HTTP Method = GET
      Request URI = /
       Parameters = {}
          Headers = {}
             Body = <no character encoding set>
    Session Attrs = {}

Handler:
             Type = org.springframework.web.servlet.resource.ResourceHttpRequestHandler

Async:
    Async started = false
     Async result = null

Resolved Exception:
             Type = null

ModelAndView:
        View name = null
             View = null
            Model = null

FlashMap:
       Attributes = null

MockHttpServletResponse:
           Status = 404
    Error message = null
          Headers = {}
     Content type = null
             Body = 
    Forwarded URL = null
   Redirected URL = null
          Cookies = []

java.lang.AssertionError: Status 
Expected :200
Actual   :404

MY controller class looks like:

package com.espn.csemobile.espnapp.test.units.controllers

import java.util.Collections

import org.springframework.web.bind.annotation.GetMapping
import org.springframework.web.bind.annotation.RestController

@RestController
class HomeController {

    @GetMapping("/")
    fun greeting(): Map<String, Any> {
        return Collections.singletonMap<String, Any>("message", "Hello World")
    }
}

And my test class:

   package com.espn.csemobile.espnapp.test.units.controllers

import org.hamcrest.Matchers.containsString
import org.junit.Test
import org.junit.runner.RunWith
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.boot.test.autoconfigure.restdocs.AutoConfigureRestDocs
import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest
import org.springframework.restdocs.mockmvc.MockMvcRestDocumentation.document
import org.springframework.test.context.junit4.SpringRunner
import org.springframework.test.web.servlet.MockMvc
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get
import org.springframework.test.web.servlet.result.MockMvcResultHandlers.print
import org.springframework.test.web.servlet.result.MockMvcResultMatchers.content
import org.springframework.test.web.servlet.result.MockMvcResultMatchers.status

@RunWith(SpringRunner::class)
@WebMvcTest(HomeController::class, secure = false)
@AutoConfigureRestDocs(outputDir = "target/snippets")
class WebLayerTest {

    @Autowired
    private val mockMvc: MockMvc? = null

    @Test
    @Throws(Exception::class)
    fun shouldReturnDefaultMessage() {
        this.mockMvc!!.perform(get("/")).andDo(print()).andExpect(status().isOk)
                .andExpect(content().string(containsString("Hello World")))
                .andDo(document("home"))
    }
}

The test fails only when the files are in a different location. Any ideas?