Spring: MockMvc tests a controller without a server

It runs the full Spring MVC stack in memory - mapping, binding, validation and your handler.

Code

@Test
void returnsOrder() throws Exception {
    given(service.byId(42L)).willReturn(new Order(42L, "JCH-01"));

    mvc.perform(get("/api/orders/42"))
       .andExpect(status().isOk())
       .andExpect(jsonPath("$.sku").value("JCH-01"));
}

Output

MockHttpServletResponse:
   Status = 200
     Body = {"id":42,"sku":"JCH-01"}

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Published 2026-08-11