github.com/bhojpur/cache@v0.0.4/pkg/file/types/shard_test.go (about)

     1  package types
     2  
     3  // Copyright (c) 2018 Bhojpur Consulting Private Limited, India. All rights reserved.
     4  
     5  // Permission is hereby granted, free of charge, to any person obtaining a copy
     6  // of this software and associated documentation files (the "Software"), to deal
     7  // in the Software without restriction, including without limitation the rights
     8  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     9  // copies of the Software, and to permit persons to whom the Software is
    10  // furnished to do so, subject to the following conditions:
    11  
    12  // The above copyright notice and this permission notice shall be included in
    13  // all copies or substantial portions of the Software.
    14  
    15  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    16  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    17  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    18  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    19  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    20  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    21  // THE SOFTWARE.
    22  
    23  import (
    24  	"testing"
    25  
    26  	"github.com/bhojpur/cache/pkg/file/crypto"
    27  )
    28  
    29  func TestNewShard(t *testing.T) {
    30  	bytes := []byte("test bytes")
    31  	newShard, err := NewShard(bytes)
    32  	if err != nil {
    33  		t.Fatal(err)
    34  	}
    35  
    36  	t.Log((*newShard).String())
    37  }
    38  func TestCalculateShardSizes(t *testing.T) {
    39  	rawBytes := []byte("123456789")
    40  	nodes := 5
    41  
    42  	sizes, _ := calculateShardSizes(rawBytes, nodes)
    43  	t.Log(sizes)
    44  
    45  }
    46  
    47  func TestGenerateShards(t *testing.T) {
    48  	bytes := []byte("these are the bytes of a test file that is going to be sharded.")
    49  	nodes := 5
    50  
    51  	shards, err := GenerateShards(
    52  		bytes,
    53  		nodes,
    54  	)
    55  	if err != nil {
    56  		t.Fatal(err)
    57  	}
    58  
    59  	for i, shard := range shards {
    60  		t.Logf("\n[shard %d] %s\n", i, shard.String())
    61  	}
    62  
    63  }
    64  
    65  func TestFromBytes(t *testing.T) {
    66  	bytes := []byte("test bytes")
    67  	shard, err := NewShard(bytes)
    68  	if err != nil {
    69  		t.Fatal(err)
    70  	}
    71  
    72  	shardBytes := shard.Serialize()
    73  
    74  	newShard, err := ShardFromBytes(shardBytes)
    75  	if err != nil {
    76  		t.Fatal(err)
    77  	}
    78  
    79  	t.Logf("[newShard] %s\n", newShard.String())
    80  
    81  }
    82  
    83  func TestValidate(t *testing.T) {
    84  	bytes := []byte("test bytes")
    85  	shard, err := NewShard(bytes)
    86  	if err != nil {
    87  		t.Fatal(err)
    88  	}
    89  
    90  	isValid := (*shard).Validate()
    91  	if isValid == false {
    92  		t.Fatal("shard is actually valid")
    93  	}
    94  
    95  	badHash := crypto.Sha3([]byte("not a valid hash"))
    96  	(*shard).Hash = badHash
    97  
    98  	isValid = (*shard).Validate()
    99  	if isValid == true {
   100  		t.Fatal("shard is actually invalid")
   101  	}
   102  }