Refactor router test.

* Split test-cases into own runners

router_test.go

@@ -22,7 +22,7 @@ func TestWebserviceGetSuperHeros(t *testing.T) {
 	router := api.NewRouter(heros, 5, nil)
 
 	// Test cases
-	for _, tt := range []struct {
+	for _, tc := range []struct {
 		name      string    // Test name
 		url       string    // URL to test
 		encrypted bool      // Encrypted identities
@@ -33,81 +33,85 @@ func TestWebserviceGetSuperHeros(t *testing.T) {
 		{"Test retrieve superheroes that match given superpower(s)", "/superheroes?superpowers=healing", false, &[]string{"healing"}},
 		{"Test retrieve superheroes that match given superpower(s) with encrypted identities", "/superheroes?superpowers=healing&encrypted=true", true, &[]string{"healing"}},
 	} {
-		// Test with valid domain model
-		req, err := http.NewRequest(http.MethodGet, tt.url, strings.NewReader(""))
-		if err != nil {
-			t.Fatal("Error creating request: ", err)
-		}
+		// Run test case
+		t.Run(tc.name, func(t *testing.T) {
 
-		// Create response recorder
-		rec := httptest.NewRecorder()
-		router.GetSuperHeroes(rec, req)
-		res := rec.Result()
-
-		// Test status code
-		if res.StatusCode != http.StatusOK {
-			t.Errorf("Expected status code %d, got %d", http.StatusOK, res.StatusCode)
-		}
-
-		// Test content type
-		if res.Header.Get("Content-Type") != "application/json" {
-			t.Errorf("Expected content type %s, got %s", "application/json", res.Header.Get("Content-Type"))
-		}
-
-		// Test decode response
-		heros := &[]*deesee.Superhero{}
-		if err = json.NewDecoder(res.Body).Decode(heros); err != nil {
-			t.Fatalf("Error decoding response: %heros", err)
-		}
-
-		// Test non-nil response
-		if heros == nil {
-			t.Fatalf("Expected non-nil response")
-		}
-
-		// Test length of response
-		if len(*heros) < 1 {
-			t.Fatalf("Expected non-empty response")
-		}
-
-		// Test heros entries
-		for _, hero := range *heros {
-
-			// Test heros identities
-			if hero.Identity == nil {
-				t.Errorf("Expected identity to be %s, got %s", "unknown", hero.Identity)
+			// Create request
+			req, err := http.NewRequest(http.MethodGet, tc.url, strings.NewReader(""))
+			if err != nil {
+				t.Fatal("Error creating request: ", err)
 			}
 
-			// Test encrypted identities
-			if tt.encrypted {
-				if hero.Name == "superman" && (hero.Identity.FirstName != "hqfwp" || hero.Identity.LastName != "pjsy") {
-					t.Errorf("Expected encoded superman identity")
+			// Create response recorder
+			rec := httptest.NewRecorder()
+			router.GetSuperHeroes(rec, req)
+			res := rec.Result()
+
+			// Test status code
+			if res.StatusCode != http.StatusOK {
+				t.Errorf("Expected status code %d, got %d", http.StatusOK, res.StatusCode)
+			}
+
+			// Test content type
+			if res.Header.Get("Content-Type") != "application/json" {
+				t.Errorf("Expected content type %s, got %s", "application/json", res.Header.Get("Content-Type"))
+			}
+
+			// Test decode response
+			heros := &[]*deesee.Superhero{}
+			if err = json.NewDecoder(res.Body).Decode(heros); err != nil {
+				t.Fatalf("Error decoding response: %heros", err)
+			}
+
+			// Test non-nil response
+			if heros == nil {
+				t.Fatalf("Expected non-nil response")
+			}
+
+			// Test length of response
+			if len(*heros) < 1 {
+				t.Fatalf("Expected non-empty response")
+			}
+
+			// Test heros entries
+			for _, hero := range *heros {
+
+				// Test heros identities
+				if hero.Identity == nil {
+					t.Errorf("Expected identity to be %s, got %s", "unknown", hero.Identity)
 				}
-			}
 
-			// Test superpowers
-			if hero.SuperPowers != nil {
-				for _, gotPower := range *hero.SuperPowers {
-					if !deesee.IsAcceptable(gotPower) {
-						t.Errorf("Expected superpower %s to be acceptable", gotPower)
+				// Test encrypted identities
+				if tc.encrypted {
+					if hero.Name == "superman" && (hero.Identity.FirstName != "hqfwp" || hero.Identity.LastName != "pjsy") {
+						t.Errorf("Expected encoded superman identity")
+					}
+				}
+
+				// Test superpowers
+				if hero.SuperPowers != nil {
+					for _, gotPower := range *hero.SuperPowers {
+						if !deesee.IsAcceptable(gotPower) {
+							t.Errorf("Expected superpower %s to be acceptable", gotPower)
+						}
+					}
+				}
+
+				// Test superpowers filter
+				if tc.filterBy != nil {
+					for _, wantPower := range *tc.filterBy {
+						if !hero.Has(wantPower) {
+							t.Errorf("Expected superpower %s to be in %s", wantPower, hero.SuperPowers)
+						}
 					}
 				}
 			}
-
-			// Test superpowers filter
-			if tt.filterBy != nil {
-				for _, wantPower := range *tt.filterBy {
-					if !hero.Has(wantPower) {
-						t.Errorf("Expected superpower %s to be in %s", wantPower, hero.SuperPowers)
-					}
-				}
-			}
-		}
+		})
 	}
 }
 
 // TestWebserviceStoreSuperhero tests the HandleWebserviceRequest function
-// TODO: Test invalid domain models
+// TODO: Test invalid storing data (e.g. invalid JSON)
 func TestWebserviceStoreSuperhero(t *testing.T) {
 	// Load heros
 	heros, err := deesee.Load(dataPath)