Hello: multiple languages

hello.go

@@ -1,19 +1,50 @@
 package main
 
-import "fmt"
-
-const (
-	englishHelloPrefix      = "Hello "
-	englishDefaultHelloName = "world"
+import (
+	"fmt"
 )
 
-func Hello(name string) string {
-	if name == "" {
-		return englishHelloPrefix + englishDefaultHelloName
+const (
+	english = "English"
+	spanish = "Spanish"
+
+	englishHelloPrefix = "Hello "
+	spanishHelloPrefix = "Hola "
+
+	englishDefaultWorld = "world"
+	spanishDefaultWorld = "Mundo"
+)
+
+func getDefaultWorldByLanguage(language string) string {
+	switch language {
+	case english:
+		return englishDefaultWorld
+	case spanish:
+		return spanishDefaultWorld
 	}
-	return fmt.Sprintf("%s%s", englishHelloPrefix, name)
+
+	return englishDefaultWorld
+}
+
+func getHelloPrefixByLanguage(language string) string {
+	switch language {
+	case english:
+		return englishHelloPrefix
+	case spanish:
+		return spanishHelloPrefix
+	}
+	return englishHelloPrefix
+}
+
+func Hello(name, language string) string {
+	prefix := getHelloPrefixByLanguage(language)
+
+	if name == "" {
+		return prefix + getDefaultWorldByLanguage(language)
+	}
+	return prefix + name
 }
 
 func main() {
-	fmt.Println(Hello("Mary"))
+	fmt.Println(Hello("Mary", "English"))
 }

hello_test.go

@@ -4,16 +4,22 @@ import "testing"
 
 func TestHello(t *testing.T) {
 	t.Run("Hello someone", func(t *testing.T) {
-		got := Hello("Jason")
+		got := Hello("Jason", "English")
 		exp := "Hello Jason"
 		assertCorrectMsg(t, got, exp)
 	})
 
 	t.Run("Hello default", func(t *testing.T) {
-		got := Hello("")
+		got := Hello("", "English")
 		exp := "Hello world"
 		assertCorrectMsg(t, got, exp)
 	})
+
+	t.Run("Hello default", func(t *testing.T) {
+		got := Hello("Elodie", "Spanish")
+		exp := "Hola Elodie"
+		assertCorrectMsg(t, got, exp)
+	})
 }
 
 func assertCorrectMsg(t testing.TB, got, exp string) {