github.com/cloudwego/frugal@v0.1.15/internal/binary/defs/defaults_test.go (about)

     1  /*
     2   * Copyright 2022 ByteDance Inc.
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   *     http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  
    17  package defs
    18  
    19  import (
    20      `reflect`
    21      `testing`
    22      `unsafe`
    23  
    24      `github.com/davecgh/go-spew/spew`
    25      `github.com/stretchr/testify/require`
    26  )
    27  
    28  type CtorTestStruct struct {
    29      X int
    30      Y int
    31      Z int
    32  }
    33  
    34  func (self *CtorTestStruct) InitDefault() {
    35      *self = CtorTestStruct {
    36          X: 1,
    37          Y: 2,
    38          Z: 3,
    39      }
    40  }
    41  
    42  func TestDefaults_Resolve(t *testing.T) {
    43      fp := (*CtorTestStruct).InitDefault
    44      fa := **(**unsafe.Pointer)(unsafe.Pointer(&fp))
    45      spew.Dump(fa)
    46      fn, err := GetDefaultInitializer(reflect.TypeOf(CtorTestStruct{}))
    47      require.NoError(t, err)
    48      spew.Dump(fn)
    49      require.Equal(t, fa, fn)
    50  }