diff --git a/service/user/form/form_validator.go b/service/user/form/form_validator.go
index 3a8c99c2..a65725da 100644
--- a/service/user/form/form_validator.go
+++ b/service/user/form/form_validator.go
@@ -49,7 +49,7 @@ type RegistrationForm struct {
 	Username           string `form:"username" needed:"true" len_min:"3" len_max:"20"`
 	Email              string `form:"email"`
 	Password           string `form:"password" needed:"true" len_min:"6" len_max:"72" equalInput:"ConfirmPassword"`
-	ConfirmPassword    string `form:"password_confirmation" omit:"true" needed:"true"`
+	ConfirmPassword    string `form:"password_confirmation" hum_name:"Password Confirmation" omit:"true" needed:"true"`
 	CaptchaID          string `form:"captchaID" omit:"true" needed:"true"`
 	TermsAndConditions bool   `form:"t_and_c" omit:"true" needed:"true" equal:"true" hum_name:"Terms and Conditions"`
 }
@@ -67,7 +67,7 @@ type UserForm struct {
 	Language        string `form:"language" default:"en-us"`
 	CurrentPassword string `form:"current_password" len_min:"6" len_max:"72" omit:"true"`
 	Password        string `form:"password" len_min:"6" len_max:"72" equalInput:"ConfirmPassword"`
-	ConfirmPassword string `form:"password_confirmation" omit:"true"`
+	ConfirmPassword string `form:"password_confirmation" hum_name:"Password Confirmation" omit:"true"`
 	Status          int    `form:"status" default:"0"`
 	Theme           string `form:"theme"`
 }
diff --git a/translations/en-us.all.json b/translations/en-us.all.json
index 70c1df85..80d65aac 100644
--- a/translations/en-us.all.json
+++ b/translations/en-us.all.json
@@ -1370,5 +1370,25 @@
   {
     "id": "filter",
     "translation": "Filter"
+  },
+  {
+    "id": "error_min_length",
+    "translation": "Minimal length of %s required for the input: %s"
+  },
+  {
+    "id":"error_max_length",
+    "translation":"Maximal length of %s required for the input: %s"
+  },
+  {
+    "id":"error_same_value",
+    "translation": "Must be same %s"
+  },
+  {
+    "id": "error_wrong_value",
+    "translation": "Wrong value for the input: %s"
+  },
+  {
+    "id": "error_field_needed",
+    "translation": "Field needed: %s"
   }
 ]
diff --git a/util/categories/categories_test.go b/util/categories/categories_test.go
new file mode 100644
index 00000000..e1cd211c
--- /dev/null
+++ b/util/categories/categories_test.go
@@ -0,0 +1,63 @@
+package categories
+
+import (
+	"path"
+	"strings"
+
+	"testing"
+
+	"reflect"
+
+	"github.com/NyaaPantsu/nyaa/config"
+)
+
+// run before config/parse.go:init()
+var _ = func() (_ struct{}) {
+	config.ConfigPath = path.Join("..", "..", config.ConfigPath)
+	config.DefaultConfigPath = path.Join("..", "..", config.DefaultConfigPath)
+	config.Parse()
+	return
+}()
+
+func TestGetCategories(t *testing.T) {
+	cats := GetCategories()
+	if len(cats) == 0 {
+		t.Skip("Couldn't load categories to test Categories")
+	}
+	if !reflect.DeepEqual(cats, config.Conf.Torrents.CleanCategories) && !reflect.DeepEqual(cats, config.Conf.Torrents.SukebeiCategories) {
+		t.Error("Categories doesn't correspond to the configured ones")
+	}
+}
+
+func TestCategoryExists(t *testing.T) {
+	if CategoryExists("k") {
+		t.Error("Category that shouldn't exist return true")
+	}
+}
+
+func TestGetCategoriesSelect(t *testing.T) {
+	cats := GetCategoriesSelect(true, false)
+	for _, value := range cats {
+		split := strings.Split(value, "_")
+		if len(split) != 2 {
+			t.Errorf("The category %s doesn't have only one underscore", value)
+		}
+		if split[1] != "" {
+			t.Errorf("The function doesn't filter out child categories, expected '', got %s", split[1])
+		}
+	}
+	cats = GetCategoriesSelect(false, true)
+	for _, value := range cats {
+		split := strings.Split(value, "_")
+		if len(split) != 2 {
+			t.Errorf("The category %s doesn't have only one underscore", value)
+		}
+		if split[1] == "" {
+			t.Error("The function doesn't filter out parent categories, expected a string, got nothing")
+		}
+	}
+	cats = GetCategoriesSelect(true, true)
+	if len(cats) != len(GetCategories()) {
+		t.Errorf("Same amount of categories isn't return when no filter applied")
+	}
+}
diff --git a/util/modelHelper/modelHelper_test.go b/util/modelHelper/modelHelper_test.go
new file mode 100644
index 00000000..dc1039d7
--- /dev/null
+++ b/util/modelHelper/modelHelper_test.go
@@ -0,0 +1,81 @@
+package modelHelper
+
+import (
+	"net/http"
+	"path"
+	"testing"
+
+	"github.com/NyaaPantsu/nyaa/config"
+	msg "github.com/NyaaPantsu/nyaa/util/messages"
+)
+
+// run before config/parse.go:init()
+var _ = func() (_ struct{}) {
+	config.ConfigPath = path.Join("..", "..", config.ConfigPath)
+	config.DefaultConfigPath = path.Join("..", "..", config.DefaultConfigPath)
+	config.Parse()
+	return
+}()
+
+type TestForm struct {
+	DefaultVal  int    `form:"default" default:"3" notnull:"true"`
+	ConfirmVal  string `form:"confirm" needed:"true" equalInput:"ConfirmeVal" len_min:"7" len_max:"8"`
+	ConfirmeVal string `form:"confirme" needed:"true"`
+}
+
+func TestValidateForm(t *testing.T) {
+	req, err := http.NewRequest("GET", "/", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	messages := msg.GetMessages(req)
+	testform := TestForm{}
+	ValidateForm(&testform, messages)
+	if !messages.HasErrors() {
+		t.Errorf("No errors when parsing empty invalid form: %v", testform)
+	}
+	messages.ClearAllErrors()
+	testform.DefaultVal, testform.ConfirmVal, testform.ConfirmeVal = 1, "testingl", "testingl"
+	ValidateForm(&testform, messages)
+	if messages.HasErrors() {
+		t.Errorf("Errors when parsing valid form %v\n with errors %v", testform, messages.GetAllErrors())
+	}
+	messages.ClearAllErrors()
+	testform.ConfirmVal = "test"
+	testform.ConfirmeVal = "test"
+	ValidateForm(&testform, messages)
+	if len(messages.GetErrors("confirm")) == 0 {
+		t.Errorf("No errors on minimal length test when parsing invalid form: %v", testform)
+	}
+	messages.ClearAllErrors()
+	testform.ConfirmVal, testform.ConfirmeVal = "testing", "testind"
+	ValidateForm(&testform, messages)
+	if len(messages.GetErrors("confirm")) == 0 {
+		t.Errorf("No errors on equal test when parsing invalid form: %v", testform)
+	}
+	messages.ClearAllErrors()
+	testform.ConfirmVal, testform.ConfirmeVal = "", "testing"
+	ValidateForm(&testform, messages)
+	if len(messages.GetErrors("confirm")) == 0 {
+		t.Errorf("No errors on needed test when parsing invalid form: %v", testform)
+	}
+	messages.ClearAllErrors()
+	testform.ConfirmVal, testform.ConfirmeVal = "azertyuid", "azertyuid"
+	ValidateForm(&testform, messages)
+	if len(messages.GetErrors("confirm")) == 0 {
+		t.Errorf("No errors on maximal length test when parsing invalid form %v", testform)
+	}
+	messages.ClearAllErrors()
+	testform.DefaultVal = 0
+	ValidateForm(&testform, messages)
+	if testform.DefaultVal == 0 {
+		t.Errorf("Default value are not assigned on int with notnull specified: %v", testform)
+	}
+	messages.ClearAllErrors()
+	testform.DefaultVal = 1
+	ValidateForm(&testform, messages)
+	if testform.DefaultVal != 1 {
+		t.Errorf("Default value are assigned on int with non null value: %v", testform)
+	}
+	messages.ClearAllErrors()
+}
diff --git a/util/modelHelper/model_helper.go b/util/modelHelper/model_helper.go
index 559668a3..1f6e7e15 100644
--- a/util/modelHelper/model_helper.go
+++ b/util/modelHelper/model_helper.go
@@ -69,73 +69,88 @@ func ValidateForm(form interface{}, mes *msg.Messages) {
 			inputName = tag.Get("hum_name")
 		}
 		if tag.Get("len_min") != "" && (tag.Get("needed") != "" || formElem.Field(i).Len() > 0) { // Check minimum length
-			lenMin, _ := strconv.Atoi(tag.Get("len_min"))
-			if formElem.Field(i).Len() < lenMin {
-				mes.AddErrorf(tag.Get("form"), "Minimal length of %s required for the input: %s", strconv.Itoa(lenMin), inputName)
-			}
+			checkMinLength(formElem.Field(i), tag, inputName, mes)
 		}
 		if tag.Get("len_max") != "" && (tag.Get("needed") != "" || formElem.Field(i).Len() > 0) { // Check maximum length
-			lenMax, _ := strconv.Atoi(tag.Get("len_max"))
-			if formElem.Field(i).Len() > lenMax {
-				mes.AddErrorf(tag.Get("form"), "Maximal length of %s required for the input: %s", strconv.Itoa(lenMax), inputName)
-			}
+			checkMaxLength(formElem.Field(i), tag, inputName, mes)
 		}
 		if tag.Get("equalInput") != "" && (tag.Get("needed") != "" || formElem.Field(i).Len() > 0) {
-			otherInput := formElem.FieldByName(tag.Get("equalInput"))
-			if formElem.Field(i).Interface() != otherInput.Interface() {
-				mes.AddErrorf(tag.Get("form"), "Must be same %s", inputName)
+			checkEqualValue(formElem, i, tag, inputName, mes)
+		}
+		checksOnFieldTypes(formElem.Field(i), inputName, typeField, tag, mes)
+	}
+}
+
+func checkMinLength(fieldElem reflect.Value, tag reflect.StructTag, inputName string, mes *msg.Messages) {
+	lenMin, _ := strconv.Atoi(tag.Get("len_min"))
+	if fieldElem.Len() < lenMin {
+		mes.AddErrorTf(tag.Get("form"), "error_min_length", strconv.Itoa(lenMin), inputName)
+	}
+}
+func checkMaxLength(fieldElem reflect.Value, tag reflect.StructTag, inputName string, mes *msg.Messages) {
+	lenMax, _ := strconv.Atoi(tag.Get("len_max"))
+	if fieldElem.Len() > lenMax {
+		mes.AddErrorTf(tag.Get("form"), "error_max_length", strconv.Itoa(lenMax), inputName)
+	}
+}
+
+func checkEqualValue(formElem reflect.Value, i int, tag reflect.StructTag, inputName string, mes *msg.Messages) {
+	otherInput := formElem.FieldByName(tag.Get("equalInput"))
+	if formElem.Field(i).Interface() != otherInput.Interface() {
+		mes.AddErrorTf(tag.Get("form"), "error_same_value", inputName)
+	}
+}
+
+func checksOnFieldTypes(fieldElem reflect.Value, inputName string, typeField reflect.StructField, tag reflect.StructTag, mes *msg.Messages) {
+	switch typeField.Type.Name() {
+	case "string":
+		if tag.Get("equal") != "" && fieldElem.String() != tag.Get("equal") {
+			mes.AddErrorTf(tag.Get("form"), "error_wrong_value", inputName)
+		}
+		if tag.Get("needed") != "" && fieldElem.String() == "" {
+			mes.AddErrorTf(tag.Get("form"), "error_field_needed", inputName)
+		}
+		if fieldElem.String() == "" && tag.Get("default") != "" {
+			fieldElem.SetString(tag.Get("default"))
+		}
+	case "int":
+		if tag.Get("equal") != "" { // Check minimum length
+			equal, _ := strconv.Atoi(tag.Get("equal"))
+			if fieldElem.Int() > int64(equal) {
+				mes.AddErrorTf(tag.Get("form"), "error_wrong_value", inputName)
 			}
 		}
-		switch typeField.Type.Name() {
-		case "string":
-			if tag.Get("equal") != "" && formElem.Field(i).String() != tag.Get("equal") {
-				mes.AddErrorf(tag.Get("form"), "Wrong value for the input: %s", inputName)
+		if tag.Get("needed") != "" && fieldElem.Int() == 0 {
+			mes.AddErrorTf(tag.Get("form"), "error_field_needed", inputName)
+		}
+		if fieldElem.Int() == 0 && tag.Get("default") != "" && tag.Get("notnull") != "" {
+			defaultValue, _ := strconv.Atoi(tag.Get("default"))
+			fieldElem.SetInt(int64(defaultValue))
+		}
+	case "float":
+		if tag.Get("equal") != "" { // Check minimum length
+			equal, _ := strconv.Atoi(tag.Get("equal"))
+			if fieldElem.Float() != float64(equal) {
+				mes.AddErrorTf(tag.Get("form"), "error_wrong_value", inputName)
 			}
-			if tag.Get("needed") != "" && formElem.Field(i).String() == "" {
-				mes.AddErrorf(tag.Get("form"), "Field needed: %s", inputName)
-			}
-			if formElem.Field(i).String() == "" && tag.Get("default") != "" {
-				formElem.Field(i).SetString(tag.Get("default"))
-			}
-		case "int":
-			if tag.Get("equal") != "" { // Check minimum length
-				equal, _ := strconv.Atoi(tag.Get("equal"))
-				if formElem.Field(i).Int() > int64(equal) {
-					mes.AddErrorf(tag.Get("form"), "Wrong value for the input: %s", inputName)
-				}
-			}
-			if tag.Get("needed") != "" && formElem.Field(i).Int() == 0 {
-				mes.AddErrorf(tag.Get("form"), "Field needed: %s", inputName)
-			}
-			if formElem.Field(i).Interface == nil && tag.Get("default") != "" { // FIXME: always false :'(
-				defaultValue, _ := strconv.Atoi(tag.Get("default"))
-				formElem.Field(i).SetInt(int64(defaultValue))
-			}
-		case "float":
-			if tag.Get("equal") != "" { // Check minimum length
-				equal, _ := strconv.Atoi(tag.Get("equal"))
-				if formElem.Field(i).Float() != float64(equal) {
-					mes.AddErrorf(tag.Get("form"), "Wrong value for the input: %s", inputName)
-				}
-			}
-			if tag.Get("needed") != "" && formElem.Field(i).Float() == 0 {
-				mes.AddErrorf(tag.Get("form"), "Field needed: %s", inputName)
-			}
-			if formElem.Field(i).Interface == nil && tag.Get("default") != "" { // FIXME: always false :'(
-				defaultValue, _ := strconv.Atoi(tag.Get("default"))
-				formElem.Field(i).SetFloat(float64(defaultValue))
-			}
-		case "bool":
-			if tag.Get("equal") != "" { // Check minimum length
-				equal, _ := strconv.ParseBool(tag.Get("equal"))
-				if formElem.Field(i).Bool() != equal {
-					mes.AddErrorf(tag.Get("form"), "Wrong value for the input: %s", inputName)
-				}
-			}
-			if formElem.Field(i).Interface == nil && tag.Get("default") != "" { // FIXME: always false :'(
-				defaultValue, _ := strconv.ParseBool(tag.Get("default"))
-				formElem.Field(i).SetBool(defaultValue)
+		}
+		if tag.Get("needed") != "" && fieldElem.Float() == 0 {
+			mes.AddErrorTf(tag.Get("form"), "error_field_needed", inputName)
+		}
+		if fieldElem.Float() == 0 && tag.Get("default") != "" && tag.Get("notnull") != "" {
+			defaultValue, _ := strconv.Atoi(tag.Get("default"))
+			fieldElem.SetFloat(float64(defaultValue))
+		}
+	case "bool":
+		if tag.Get("equal") != "" { // Check minimum length
+			equal, _ := strconv.ParseBool(tag.Get("equal"))
+			if fieldElem.Bool() != equal {
+				mes.AddErrorTf(tag.Get("form"), "error_wrong_value", inputName)
 			}
 		}
+		if !fieldElem.Bool() && tag.Get("default") != "" && tag.Get("notnull") != "" {
+			defaultValue, _ := strconv.ParseBool(tag.Get("default"))
+			fieldElem.SetBool(defaultValue)
+		}
 	}
 }
diff --git a/util/unzlib.go b/util/unzlib.go
deleted file mode 100644
index 8ef214c6..00000000
--- a/util/unzlib.go
+++ /dev/null
@@ -1,27 +0,0 @@
-package util
-
-import (
-	"github.com/NyaaPantsu/nyaa/util/log"
-
-	"bytes"
-	"compress/zlib"
-	"io/ioutil"
-)
-
-// UnZlib : Is it deprecated?
-func UnZlib(description []byte) (string, error) {
-	if len(description) > 0 {
-		b := bytes.NewReader(description)
-		z, err := zlib.NewReader(b)
-		if !log.CheckError(err) {
-			return "", err
-		}
-		defer z.Close()
-		p, err := ioutil.ReadAll(z)
-		if !log.CheckError(err) {
-			return "", err
-		}
-		return string(p), nil
-	}
-	return "", nil
-}
diff --git a/util/util_test.go b/util/util_test.go
new file mode 100644
index 00000000..e3f978e5
--- /dev/null
+++ b/util/util_test.go
@@ -0,0 +1,86 @@
+package util
+
+import (
+	"path"
+	"testing"
+
+	"math"
+
+	"github.com/NyaaPantsu/nyaa/config"
+)
+
+// run before config/parse.go:init()
+var _ = func() (_ struct{}) {
+	config.ConfigPath = path.Join("..", config.ConfigPath)
+	config.DefaultConfigPath = path.Join("..", config.DefaultConfigPath)
+	config.Parse()
+	return
+}()
+
+func TestFormatFilesize(t *testing.T) {
+	format := FormatFilesize(0)
+	if format != "0.0 B" {
+		t.Fatalf("Format of 0 bytes gives %s, expected '0.0 B'", format)
+	}
+	format = FormatFilesize(int64(math.Exp2(0)))
+	if format != "1.0 B" {
+		t.Fatalf("Format of 1byte gives %s, expected '1.0 B'", format)
+	}
+	format = FormatFilesize(int64(math.Exp2(10)))
+	if format != "1.0 KiB" {
+		t.Fatalf("Format of 1024 bytes gives %s, expected '1.0 KiB'", format)
+	}
+}
+
+func TestGetHostname(t *testing.T) {
+	hostname := GetHostname("http://exemple.com")
+	if hostname != "exemple.com" {
+		t.Fatalf("Hostname gives %s, expected 'exemple.com'", hostname)
+	}
+	hostname = GetHostname("ircs://exemple.com/ddf/?kfkf=http://something.net&id=")
+	if hostname != "exemple.com" {
+		t.Fatalf("Hostname gives %s, expected 'exemple.com'", hostname)
+	}
+	hostname = GetHostname("")
+	if hostname != "" {
+		t.Fatalf("Hostname gives %s, expected ''", hostname)
+	}
+}
+
+func TestInfoHashToMagnet(t *testing.T) {
+	magnetExpected := "magnet:?xt=urn:btih:213d354dd354d534d&dn=Test&tr=udp://tracker.doko.moe:6969&tr=udp://tracker.zer0day.to:1337/announce"
+
+	magnet := InfoHashToMagnet("213d354dd354d534d", "Test", "udp://tracker.doko.moe:6969", "udp://tracker.zer0day.to:1337/announce")
+	if magnetExpected != magnet {
+		t.Fatalf("Magnet URL parsed doesn't give the expected result, have this '%s', want this '%s'", magnet, magnetExpected)
+	}
+}
+
+func TestSafe(t *testing.T) {
+	safeString := map[string]string{
+		"'":                  "&#39;",
+		"&":                  "&amp;",
+		"http://exemple.com": "http://exemple.com",
+	}
+	for key, val := range safeString {
+		safe := Safe(key)
+		if string(safe) != val {
+			t.Errorf("Safe doesn't escape the right values, expected result %s, got %s", key, val)
+		}
+	}
+}
+
+func TestSafeText(t *testing.T) {
+	safeString := map[string]string{
+		"'":                                    "&#39;",
+		"&":                                    "&amp;",
+		"http://exemple.com":                   "http://exemple.com",
+		"<em>test</em><script>lol();</script>": "&lt;em&gt;test&lt;/em&gt;&lt;script&gt;lol();&lt;/script&gt;",
+	}
+	for key, val := range safeString {
+		safe := Safe(key)
+		if string(safe) != val {
+			t.Errorf("Safe doesn't escape the right values, expected result %s, got %s", key, val)
+		}
+	}
+}