Controller action returns "Invalid Json" when using a Fakerequest from a spec2 test - scala

Question

I am using playframework 2.6 and play-slick 0.8.0.
Action code:
def addCompany = Authenticated {
DBAction(parse.json) {
implicit rs => {
val newCompany = rs.request.body
val result = CompanyTable.insert(newCompany.as[Company])(rs.dbSession)
if(result > 0)
Ok("{\"id\":"+result+"}")
else
Ok("New company was not created.")
}
}
}
The Action is a composition of an Action that just checks for a valid session and the DBAction, which requires the request body to have a valid JSON object.
Test code:
"should create a Company from a Json request" in new InMemoryDB {
val newCompany = Company(name = "New Company1")
val fr = FakeRequest(POST, "/company")
.withSession(("email", "bob#villa.com"))
.withHeaders(CONTENT_TYPE -> "application/json")
.withJsonBody(Json.toJson(newCompany))
val action = controllers.CompanyController.addCompany
val result = action(fr).run
status(result) should be_==(OK)
(contentAsJson(result) \ "id").as[Long] should be_>(1L)
}
The InMemoryDB class is just a FakeApplication with a pre-populated in memory database.
The issue that I am having is that when the test runs the result is always a 400 with body content containing a message saying [Invalid Json]. When I call the service using curl with the same JSON body content, it works and the id is returned.

Answer 1

I decided to build a separate test project, and I used the activator to create a seed for the new project. I noticed that in the generated test that a different method of calling the action was used, so I switched my project to use this method. It worked, but I don't know why.
New code:
"should create a Company from a Json request" in new InMemoryDB {
val newCompany = Company(name = "New Company1")
val action = route(
FakeRequest(POST, "/company")
.withSession(("email", "bob#villa.com"))
.withHeaders(CONTENT_TYPE -> "application/json")
.withJsonBody(Json.toJson(newCompany))
).get
status(action) should be_==(OK)
(contentAsJson(action) \ "id").as[Long] should be_>(1L)
}
As you can see it uses a call to route instead of calling the controller.