Add tests for empty string lists

config/string_list_test.go

@@ -27,3 +27,26 @@ func TestStringList_element(t *testing.T) {
 			list, expected, actual)
 	}
 }
+
+func TestStringList_empty_slice(t *testing.T) {
+	expected := []string{}
+	l := NewStringList(expected)
+	actual := l.Slice()
+
+	if !reflect.DeepEqual(expected, actual) {
+		t.Fatalf("Expected %q, got %q", expected, actual)
+	}
+}
+
+func TestStringList_empty_slice_length(t *testing.T) {
+	list := []string{}
+	l := NewStringList([]string{})
+	actual := l.Length()
+
+	expected := 0
+
+	if actual != expected {
+		t.Fatalf("Expected length of %q to be %d, got %d",
+			list, expected, actual)
+	}
+}