48 lines
1.1 KiB
Go
48 lines
1.1 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package ioutil
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import (
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"bytes"
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"io"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestWrapReadCloser(t *testing.T) {
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buf := bytes.NewBufferString("abc")
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rc := NewWrapReadCloser(buf)
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dst := make([]byte, 1)
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n, err := rc.Read(dst)
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assert.Equal(t, 1, n)
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assert.NoError(t, err)
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assert.Equal(t, []byte("a"), dst)
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n, err = rc.Read(dst)
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assert.Equal(t, 1, n)
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assert.NoError(t, err)
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assert.Equal(t, []byte("b"), dst)
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rc.Close()
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n, err = rc.Read(dst)
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assert.Equal(t, 0, n)
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assert.Equal(t, io.EOF, err)
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assert.Equal(t, []byte("b"), dst)
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}
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