Add tiered configuration.

third_party/github.com/BurntSushi/toml/encode_test.go

@@ -0,0 +1,25 @@
+package toml
+
+import (
+	"bytes"
+	"testing"
+)
+
+type encodeSimple struct {
+	Location string
+	// Ages []int
+	// DOB time.Time
+}
+
+func TestEncode(t *testing.T) {
+	v := encodeSimple{
+		Location: "Westborough, MA",
+	}
+
+	buf := new(bytes.Buffer)
+	e := newEncoder(buf)
+	if err := e.Encode(v); err != nil {
+		t.Fatal(err)
+	}
+	testf(buf.String())
+}