readcloser_test.go

Documentation: go.etcd.io/etcd/pkg/v3/ioutil

     1  // Copyright 2016 The etcd Authors
     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  
    15  package ioutil
    16  
    17  import (
    18  	"bytes"
    19  	"io"
    20  	"testing"
    21  )
    22  
    23  type readerNilCloser struct{ io.Reader }
    24  
    25  func (rc *readerNilCloser) Close() error { return nil }
    26  
    27  // TestExactReadCloserExpectEOF expects an eof when reading too much.
    28  func TestExactReadCloserExpectEOF(t *testing.T) {
    29  	buf := bytes.NewBuffer(make([]byte, 10))
    30  	rc := NewExactReadCloser(&readerNilCloser{buf}, 1)
    31  	if _, err := rc.Read(make([]byte, 10)); err != ErrExpectEOF {
    32  		t.Fatalf("expected %v, got %v", ErrExpectEOF, err)
    33  	}
    34  }
    35  
    36  // TestExactReadCloserShort expects an eof when reading too little
    37  func TestExactReadCloserShort(t *testing.T) {
    38  	buf := bytes.NewBuffer(make([]byte, 5))
    39  	rc := NewExactReadCloser(&readerNilCloser{buf}, 10)
    40  	if _, err := rc.Read(make([]byte, 10)); err != nil {
    41  		t.Fatalf("Read expected nil err, got %v", err)
    42  	}
    43  	if err := rc.Close(); err != ErrShortRead {
    44  		t.Fatalf("Close expected %v, got %v", ErrShortRead, err)
    45  	}
    46  }
    47
View as plain text