github.com/annchain/OG@v0.0.9/tests/testChan/chan_test.go (about)

     1  // Copyright © 2019 Annchain Authors <EMAIL ADDRESS>
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  package testChan
    15  
    16  import (
    17  	"fmt"
    18  	"testing"
    19  )
    20  
    21  type s struct {
    22  	ch      chan bool
    23  	stopped bool
    24  }
    25  
    26  func TestA(t *testing.T) {
    27  
    28  	var a = make(chan bool)
    29  	var pa = &a
    30  	var b chan bool
    31  	var pb = &b
    32  	fmt.Println(a, b, pa, pb)
    33  	b = a
    34  	pb = pa
    35  	fmt.Println(a, b, pa, pb)
    36  	a = nil
    37  	pa = nil
    38  	fmt.Println(a, b, pa, pb)
    39  
    40  }
    41  
    42  func TestB(t *testing.T) {
    43  	var a = s{
    44  		ch:      make(chan bool),
    45  		stopped: false,
    46  	}
    47  	var c = &a
    48  	var b = a
    49  	fmt.Println(a, c, b)
    50  	a.stopped = true
    51  	fmt.Println(a, c, b)
    52  }