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 }