Function Example_configurationStack

config/example_test.go:25–42

()

}

func Example_configurationStack() {
	fs := flag.NewFlagSet("config", flag.ContinueOnError)
	fs.String("foo", "", "foo value")
	fs.Parse([]string{"-foo", "bar"})
	conf, _ := config.NewConfig(
		config.WithProviderLayer(
			basicflag.Provider(fs, "."), nil,
		),
		config.WithProviderLayer(
			confmap.Provider(map[string]interface{}{"foo": "baz"}, "."), nil,
		),
	)
	// We have two layers of configuration, the first one from flags and the second one from a map.
	// Both of them defined "foo". The first one should take precedence.
	fmt.Println(conf.String("foo"))
	// Output:
	// bar
}