helloworld

hello/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("world"))
-}

helloworld/hello.go

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

helloworld/hello_test.go

@@ -4,15 +4,25 @@ import "testing"
 
 func TestHello(t *testing.T) {
   t.Run("saying hello to people", func(t *testing.T) {
-    got := Hello("Chris")
+    got := Hello("Chris", "")
     want := "Hello, Chris"
     assertCorrectMessage(t, got, want)
   })
   t.Run("say 'Hello, World' when an empty string is supplied", func(t *testing.T) {
-    got := Hello("")
+    got := Hello("", "")
     want := "Hello, World"
     assertCorrectMessage(t, got, want)
   })
+  t.Run("in Spanish", func(t *testing.T) {
+    got := Hello("Elodie", "Spanish")
+    want := "Hola, Elodie"
+    assertCorrectMessage(t, got, want)
+  })
+  t.Run("in French", func(t *testing.T) {
+    got := Hello("Michael", "French")
+    want := "Bonjour, Michael"
+    assertCorrectMessage(t, got, want)
+  })
 }
 
 func assertCorrectMessage(t testing.TB, got, want string) {