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// Copyright 2019 The Hugo Authors. All rights reserved.
//
// 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 hqt
import (
"errors"
"reflect"
qt "github.com/frankban/quicktest"
"github.com/google/go-cmp/cmp"
)
// IsSameType asserts that got is the same type as want.
var IsSameType qt.Checker = &typeChecker{
argNames: []string{"got", "want"},
}
type argNames []string
func (a argNames) ArgNames() []string {
return a
}
type typeChecker struct {
argNames
}
// Check implements Checker.Check by checking that got and args[0] is of the same type.
func (c *typeChecker) Check(got interface{}, args []interface{}, note func(key string, value interface{})) (err error) {
if want := args[0]; reflect.TypeOf(got) != reflect.TypeOf(want) {
if _, ok := got.(error); ok && want == nil {
return errors.New("got non-nil error")
}
return errors.New("values are not of same type")
}
return nil
}
// DeepAllowUnexported creates an option to allow compare of unexported types
// in the given list of types.
// see https://github.com/google/go-cmp/issues/40#issuecomment-328615283
func DeepAllowUnexported(vs ...interface{}) cmp.Option {
m := make(map[reflect.Type]struct{})
for _, v := range vs {
structTypes(reflect.ValueOf(v), m)
}
var typs []interface{}
for t := range m {
typs = append(typs, reflect.New(t).Elem().Interface())
}
return cmp.AllowUnexported(typs...)
}
func structTypes(v reflect.Value, m map[reflect.Type]struct{}) {
if !v.IsValid() {
return
}
switch v.Kind() {
case reflect.Ptr:
if !v.IsNil() {
structTypes(v.Elem(), m)
}
case reflect.Interface:
if !v.IsNil() {
structTypes(v.Elem(), m)
}
case reflect.Slice, reflect.Array:
for i := 0; i < v.Len(); i++ {
structTypes(v.Index(i), m)
}
case reflect.Map:
for _, k := range v.MapKeys() {
structTypes(v.MapIndex(k), m)
}
case reflect.Struct:
m[v.Type()] = struct{}{}
for i := 0; i < v.NumField(); i++ {
structTypes(v.Field(i), m)
}
}
}
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