go.etcd.io/etcd@v3.3.27+incompatible/pkg/ioutil/reader_test.go (about)

     1  // Copyright 2015 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  	"testing"
    20  )
    21  
    22  func TestLimitedBufferReaderRead(t *testing.T) {
    23  	buf := bytes.NewBuffer(make([]byte, 10))
    24  	ln := 1
    25  	lr := NewLimitedBufferReader(buf, ln)
    26  	n, err := lr.Read(make([]byte, 10))
    27  	if err != nil {
    28  		t.Fatalf("unexpected read error: %v", err)
    29  	}
    30  	if n != ln {
    31  		t.Errorf("len(data read) = %d, want %d", n, ln)
    32  	}
    33  }