Add unit tests for models

model/category_test.go

@@ -0,0 +1,61 @@
+// Copyright 2017 Frédéric Guillot. All rights reserved.
+// Use of this source code is governed by the Apache 2.0
+// license that can be found in the LICENSE file.
+
+package model
+
+import "testing"
+
+func TestValidateCategoryCreation(t *testing.T) {
+	category := &Category{}
+	if err := category.ValidateCategoryCreation(); err == nil {
+		t.Error(`An empty category should generate an error`)
+	}
+
+	category = &Category{Title: "Test"}
+	if err := category.ValidateCategoryCreation(); err == nil {
+		t.Error(`A category without userID should generate an error`)
+	}
+
+	category = &Category{UserID: 42}
+	if err := category.ValidateCategoryCreation(); err == nil {
+		t.Error(`A category without title should generate an error`)
+	}
+
+	category = &Category{Title: "Test", UserID: 42}
+	if err := category.ValidateCategoryCreation(); err != nil {
+		t.Error(`All required fields are filled, it should not generate any error`)
+	}
+}
+
+func TestValidateCategoryModification(t *testing.T) {
+	category := &Category{}
+	if err := category.ValidateCategoryModification(); err == nil {
+		t.Error(`An empty category should generate an error`)
+	}
+
+	category = &Category{Title: "Test"}
+	if err := category.ValidateCategoryModification(); err == nil {
+		t.Error(`A category without userID should generate an error`)
+	}
+
+	category = &Category{UserID: 42}
+	if err := category.ValidateCategoryModification(); err == nil {
+		t.Error(`A category without title should generate an error`)
+	}
+
+	category = &Category{ID: -1, Title: "Test", UserID: 42}
+	if err := category.ValidateCategoryModification(); err == nil {
+		t.Error(`An invalid categoryID should generate an error`)
+	}
+
+	category = &Category{ID: 0, Title: "Test", UserID: 42}
+	if err := category.ValidateCategoryModification(); err == nil {
+		t.Error(`An invalid categoryID should generate an error`)
+	}
+
+	category = &Category{ID: 1, Title: "Test", UserID: 42}
+	if err := category.ValidateCategoryModification(); err != nil {
+		t.Error(`All required fields are filled, it should not generate any error`)
+	}
+}