go-by-test/helloworld/hello_test.go

package helloworld

import "testing"

func TestHello(t *testing.T) {
	initDefaults()
	t.Run("Hello someone", func(t *testing.T) {
		got := Hello("Jason", "English")
		exp := "Hello Jason"
		assertCorrectMsg(t, got, exp)
	})

	t.Run("Hello default", func(t *testing.T) {
		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) {
	t.Helper()
	if got != exp {
		t.Errorf("got %q expected %q", got, exp)
	}
}