1 files changed, 31 insertions(+), 0 deletions(-)

M di_test.go

@@ 2,10 2,41 @@ package di
 
 import (
 	"errors"
+	"fmt"
 	"strings"
 	"testing"
 )
 
+func ExampleBuild() {
+	type Username string
+	type Config struct {
+		User     Username
+		Age      int
+		Greeting func(Username, int) string
+	}
+
+	cfg := Config{
+		User: "Alice",
+		Age:  42,
+		Greeting: func(u Username, age int) string {
+			return fmt.Sprintf("Hello, %s. You've been around the sun %d times!", string(u), age)
+		},
+	}
+
+	type Result struct {
+		Greeting string
+	}
+	var res Result
+	err := Build(cfg, &res)
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+	fmt.Println(res.Greeting)
+
+	// Output: Hello, Alice. You've been around the sun 42 times!
+}
+
 func TestBuildSuccess(t *testing.T) {
 	type A struct {
 		val string