github.com/imannamdari/v2ray-core/v5@v5.0.5/common/buf/copy_test.go (about)

     1  package buf_test
     2  
     3  import (
     4  	"crypto/rand"
     5  	"io"
     6  	"testing"
     7  
     8  	"github.com/golang/mock/gomock"
     9  
    10  	"github.com/imannamdari/v2ray-core/v5/common/buf"
    11  	"github.com/imannamdari/v2ray-core/v5/common/errors"
    12  	"github.com/imannamdari/v2ray-core/v5/testing/mocks"
    13  )
    14  
    15  func TestReadError(t *testing.T) {
    16  	mockCtl := gomock.NewController(t)
    17  	defer mockCtl.Finish()
    18  
    19  	mockReader := mocks.NewReader(mockCtl)
    20  	mockReader.EXPECT().Read(gomock.Any()).Return(0, errors.New("error"))
    21  
    22  	err := buf.Copy(buf.NewReader(mockReader), buf.Discard)
    23  	if err == nil {
    24  		t.Fatal("expected error, but nil")
    25  	}
    26  
    27  	if !buf.IsReadError(err) {
    28  		t.Error("expected to be ReadError, but not")
    29  	}
    30  
    31  	if err.Error() != "error" {
    32  		t.Fatal("unexpected error message: ", err.Error())
    33  	}
    34  }
    35  
    36  func TestWriteError(t *testing.T) {
    37  	mockCtl := gomock.NewController(t)
    38  	defer mockCtl.Finish()
    39  
    40  	mockWriter := mocks.NewWriter(mockCtl)
    41  	mockWriter.EXPECT().Write(gomock.Any()).Return(0, errors.New("error"))
    42  
    43  	err := buf.Copy(buf.NewReader(rand.Reader), buf.NewWriter(mockWriter))
    44  	if err == nil {
    45  		t.Fatal("expected error, but nil")
    46  	}
    47  
    48  	if !buf.IsWriteError(err) {
    49  		t.Error("expected to be WriteError, but not")
    50  	}
    51  
    52  	if err.Error() != "error" {
    53  		t.Fatal("unexpected error message: ", err.Error())
    54  	}
    55  }
    56  
    57  type TestReader struct{}
    58  
    59  func (TestReader) Read(b []byte) (int, error) {
    60  	return len(b), nil
    61  }
    62  
    63  func BenchmarkCopy(b *testing.B) {
    64  	reader := buf.NewReader(io.LimitReader(TestReader{}, 10240))
    65  	writer := buf.Discard
    66  
    67  	b.ResetTimer()
    68  	for i := 0; i < b.N; i++ {
    69  		_ = buf.Copy(reader, writer)
    70  	}
    71  }