added couple of tests springframeworkguru#3

Author: cristiii

src/test/java/guru/springframework/sfgpetclinic/controllers/VetControllerTest.java

@@ -0,0 +1,40 @@
+package guru.springframework.sfgpetclinic.controllers;
+
+import guru.springframework.sfgpetclinic.fauxspring.Model;
+import guru.springframework.sfgpetclinic.fauxspring.ModelMapImpl;
+import guru.springframework.sfgpetclinic.model.Vet;
+import guru.springframework.sfgpetclinic.services.SpecialtyService;
+import guru.springframework.sfgpetclinic.services.VetService;
+import guru.springframework.sfgpetclinic.services.map.SpecialityMapService;
+import guru.springframework.sfgpetclinic.services.map.VetMapService;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class VetControllerTest {
+
+    private VetController vetController;
+    private VetService vetService;
+    private SpecialtyService specialtyService;
+    Vet vet1;
+    Vet vet2;
+    @BeforeEach
+    void setUp() {
+        specialtyService = new SpecialityMapService();
+        vetService = new VetMapService(specialtyService);
+        vetController = new VetController(vetService);
+        vet1 = new Vet(1l, "joe", "buck", null);
+        vet2 = new Vet(2l, "joe", "biden", null);
+
+        vetService.save(vet1);
+        vetService.save(vet2);
+    }
+
+    @Test
+    void listVets() {
+        Model model = new ModelMapImpl();
+        assertEquals("vets/index", vetController.listVets(model));
+        assertEquals(2, ((ModelMapImpl) model).getMap().size());
+    }
+}

src/test/java/guru/springframework/sfgpetclinic/fauxspring/ModelMapImpl.java

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+package guru.springframework.sfgpetclinic.fauxspring;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class ModelMapImpl implements Model{
+    public Map<String, Object> getMap() {
+        return map;
+    }
+
+    Map<String, Object> map = new HashMap<>();
+    @Override
+    public void addAttribute(String key, Object o) {
+        map.put(key, o );
+    }
+
+    @Override
+    public void addAttribute(Object o) {
+        // do nothing
+    }
+}