Move to subfolder

hello.go

@@ -1,16 +0,0 @@
-package main
-
-import "fmt"
-
-const englishHelloPrefix = "Hello, "
-
-func Hello(name string) string {
-	if name == "" {
-		name = "World"
-	}
-	return englishHelloPrefix + name
-}
-
-func main() {
-	fmt.Println(Hello("Hoborg"))
-}

hello/hello.go

@@ -0,0 +1,36 @@
+package main
+
+import "fmt"
+
+const (
+	spanish            = "Spanish"
+	french             = "French"
+	englishHelloPrefix = "Hello, "
+	spanishHelloPrefix = "Hola, "
+	frenchHelloPrefix  = "Bonjour, "
+)
+
+func Hello(name, language string) string {
+	if name == "" {
+		name = "World"
+	}
+
+	prefix := greetingPrefix(language)
+	return prefix + name
+}
+
+func greetingPrefix(language string) (prefix string) {
+	switch language {
+	case french:
+		prefix = frenchHelloPrefix
+	case spanish:
+		prefix = spanishHelloPrefix
+	default:
+		prefix = englishHelloPrefix
+	}
+	return
+}
+
+func main() {
+	fmt.Println(Hello("Hoborg", ""))
+}

hello/hello_test.go

@@ -4,13 +4,23 @@ import "testing"
 
 func TestHello(t *testing.T) {
 	t.Run("saying hello to people", func(t *testing.T) {
-		got := Hello("Hoborg")
+		got := Hello("Hoborg", "")
 		want := "Hello, Hoborg"
 		assertMessage(t, got, want)
 	})
 	t.Run("say 'Hello, World' when an empty string is given", func(t *testing.T) {
-		got := Hello("")
-		want := "Hello, Worldi"
+		got := Hello("", "")
+		want := "Hello, World"
+		assertMessage(t, got, want)
+	})
+	t.Run("hello in Spanish", func(t *testing.T) {
+		got := Hello("Elodie", "Spanish")
+		want := "Hola, Elodie"
+		assertMessage(t, got, want)
+	})
+	t.Run("hello in French", func(t *testing.T) {
+		got := Hello("Émile", "French")
+		want := "Bonjour, Émile"
 		assertMessage(t, got, want)
 	})
 }