func TestParsePrefixedStruct(t *testing.T) {
var conf struct {
Name string
}
os.Setenv("NAME", "")
os.Setenv("FOO_NAME", "")
os.Setenv("NAME", "bad")
err := envconfig.InitWithPrefix(&conf, "FOO")
assert(t, err != nil, "err should not be nil")
os.Setenv("FOO_NAME", "good")
err = envconfig.InitWithPrefix(&conf, "FOO")
ok(t, err)
equals(t, "good", conf.Name)
}
func ExampleInitWithPrefix() {
var conf struct {
Name string
}
os.Setenv("NAME", "")
os.Setenv("FOO_NAME", "")
os.Setenv("NAME", "foobar")
err := envconfig.InitWithPrefix(&conf, "FOO")
fmt.Println(err)
os.Setenv("FOO_NAME", "foobar")
err = envconfig.InitWithPrefix(&conf, "FOO")
fmt.Println(err)
fmt.Println(conf.Name)
// Output:
// envconfig: key FOO_NAME not found
// <nil>
// foobar
}