github.com/matrixorigin/matrixone@v1.2.0/pkg/fileservice/io_entry_test.go (about)

     1  // Copyright 2022 Matrix Origin
     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 fileservice
    16  
    17  import (
    18  	"bytes"
    19  	"context"
    20  	"testing"
    21  	"testing/iotest"
    22  
    23  	"github.com/stretchr/testify/assert"
    24  )
    25  
    26  func TestIOEntriesReader(t *testing.T) {
    27  	ctx := context.Background()
    28  
    29  	entries := []IOEntry{
    30  		{
    31  			Offset: 0,
    32  			Size:   1,
    33  			Data:   []byte("a"),
    34  		},
    35  	}
    36  	assert.Nil(t, iotest.TestReader(newIOEntriesReader(ctx, entries), []byte("a")))
    37  
    38  	entries = []IOEntry{
    39  		{
    40  			Offset: 1,
    41  			Size:   1,
    42  			Data:   []byte("a"),
    43  		},
    44  	}
    45  	assert.Nil(t, iotest.TestReader(newIOEntriesReader(ctx, entries), []byte("\x00a")))
    46  
    47  	entries = []IOEntry{
    48  		{
    49  			Offset: 0,
    50  			Size:   1024,
    51  			Data:   bytes.Repeat([]byte("a"), 1024),
    52  		},
    53  	}
    54  	assert.Nil(t, iotest.TestReader(newIOEntriesReader(ctx, entries), bytes.Repeat([]byte("a"), 1024)))
    55  
    56  	entries = []IOEntry{
    57  		{
    58  			Size:           -1,
    59  			ReaderForWrite: bytes.NewReader([]byte("abc")),
    60  		},
    61  	}
    62  	assert.Nil(t, iotest.TestReader(newIOEntriesReader(ctx, entries), []byte("abc")))
    63  
    64  }
    65  
    66  func TestIOEntryString(t *testing.T) {
    67  	entry := IOEntry{
    68  		Size:   90,
    69  		Offset: -1,
    70  	}
    71  	str := entry.String()
    72  	if str != "IOEntry(offset = -1, size = 90)" {
    73  		t.Fatalf("got %v", str)
    74  	}
    75  }