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Files
ignition/config/util/reflection.go
Benjamin Gilbert eb78565702 config/*: test translation, actually
Somehow, neither unit tests nor blackbox tests were exercising translation
code at all.  If a PR introduced an undefined-translator panic, kola would
be the first thing to notice.

Synthesize a config struct hierarchy with entirely non-zero fields, to
ensure translation touches every type, and try to translate it.  This
doesn't validate the contents of the translated structs, but at least
it'll flush out any panics.
2021-03-24 22:54:23 -04:00

92 lines
2.1 KiB
Go

// Copyright 2019 Red Hat, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package util
import (
"fmt"
"reflect"
)
func IsPrimitive(k reflect.Kind) bool {
switch k {
case reflect.Bool,
reflect.Int,
reflect.Int8,
reflect.Int16,
reflect.Int32,
reflect.Int64,
reflect.Uint,
reflect.Uint8,
reflect.Uint16,
reflect.Uint32,
reflect.Uint64,
reflect.Uintptr,
reflect.Float32,
reflect.Float64,
reflect.Complex64,
reflect.Complex128,
reflect.String:
return true
default:
return false
}
}
func IsInvalidInConfig(k reflect.Kind) bool {
switch {
case IsPrimitive(k):
return false
case k == reflect.Ptr || k == reflect.Slice || k == reflect.Struct:
return false
default:
return true
}
}
// Return a fully non-zero value for the specified type, recursively
// setting all fields and slices.
func NonZeroValue(t reflect.Type) reflect.Value {
v := reflect.New(t).Elem()
setNonZero(v)
return v
}
func setNonZero(v reflect.Value) {
switch v.Kind() {
case reflect.Bool:
v.SetBool(true)
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
v.SetInt(1)
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
v.SetUint(1)
case reflect.Float32, reflect.Float64:
v.SetFloat(1)
case reflect.String:
v.SetString("aardvark")
case reflect.Ptr:
v.Set(reflect.New(v.Type().Elem()))
setNonZero(v.Elem())
case reflect.Slice:
v.Set(reflect.MakeSlice(v.Type(), 1, 1))
setNonZero(v.Index(0))
case reflect.Struct:
for i := 0; i < v.NumField(); i++ {
setNonZero(v.Field(i))
}
default:
panic(fmt.Sprintf("unexpected kind %s", v.Kind()))
}
}