github.com/FUSIONFoundation/efsn@v3.6.2-0.20200916075423-dbb5dd5d2cc7+incompatible/swarm/storage/mru/update_test.go (about)

     1  package mru
     2  
     3  import (
     4  	"bytes"
     5  	"testing"
     6  )
     7  
     8  const serializedUpdateHex = "0x490034004f000000da070000fb0ed7efa696bdb0b54cd75554cc3117ffc891454317df7dd6fefad978e2f2fbf74a10ce8f26ffc8bfaa07c3031a34b2c61f517955e7deb1592daccf96c69cf000456c20717565206c6565206d7563686f207920616e6461206d7563686f2c207665206d7563686f20792073616265206d7563686f"
     9  const serializedUpdateMultihashHex = "0x490022004f000000da070000fb0ed7efa696bdb0b54cd75554cc3117ffc891454317df7dd6fefad978e2f2fbf74a10ce8f26ffc8bfaa07c3031a34b2c61f517955e7deb1592daccf96c69cf0011b200102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1c1e1f20"
    10  
    11  func getTestResourceUpdate() *resourceUpdate {
    12  	return &resourceUpdate{
    13  		updateHeader: *getTestUpdateHeader(false),
    14  		data:         []byte("El que lee mucho y anda mucho, ve mucho y sabe mucho"),
    15  	}
    16  }
    17  
    18  func getTestResourceUpdateMultihash() *resourceUpdate {
    19  	return &resourceUpdate{
    20  		updateHeader: *getTestUpdateHeader(true),
    21  		data:         []byte{0x1b, 0x20, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 28, 30, 31, 32},
    22  	}
    23  }
    24  
    25  func compareResourceUpdate(a, b *resourceUpdate) bool {
    26  	return compareUpdateHeader(&a.updateHeader, &b.updateHeader) &&
    27  		bytes.Equal(a.data, b.data)
    28  }
    29  
    30  func TestResourceUpdateSerializer(t *testing.T) {
    31  	var serializedUpdateLength = len(serializedUpdateHex)/2 - 1 // hack to calculate the byte length out of the hex representation
    32  	update := getTestResourceUpdate()
    33  	serializedUpdate := make([]byte, serializedUpdateLength)
    34  	if err := update.binaryPut(serializedUpdate); err != nil {
    35  		t.Fatal(err)
    36  	}
    37  	compareByteSliceToExpectedHex(t, "serializedUpdate", serializedUpdate, serializedUpdateHex)
    38  
    39  	// Test fail if update does not contain data
    40  	update.data = nil
    41  	if err := update.binaryPut(serializedUpdate); err == nil {
    42  		t.Fatal("Expected resourceUpdate.binaryPut to fail since update does not contain data")
    43  	}
    44  
    45  	// Test fail if update is too big
    46  	update.data = make([]byte, 10000)
    47  	if err := update.binaryPut(serializedUpdate); err == nil {
    48  		t.Fatal("Expected resourceUpdate.binaryPut to fail since update is too big")
    49  	}
    50  
    51  	// Test fail if passed slice is not of the exact size required for this update
    52  	update.data = make([]byte, 1)
    53  	if err := update.binaryPut(serializedUpdate); err == nil {
    54  		t.Fatal("Expected resourceUpdate.binaryPut to fail since passed slice is not of the appropriate size")
    55  	}
    56  
    57  	// Test serializing a multihash update
    58  	var serializedUpdateMultihashLength = len(serializedUpdateMultihashHex)/2 - 1 // hack to calculate the byte length out of the hex representation
    59  	update = getTestResourceUpdateMultihash()
    60  	serializedUpdate = make([]byte, serializedUpdateMultihashLength)
    61  	if err := update.binaryPut(serializedUpdate); err != nil {
    62  		t.Fatal(err)
    63  	}
    64  	compareByteSliceToExpectedHex(t, "serializedUpdate", serializedUpdate, serializedUpdateMultihashHex)
    65  
    66  	// mess with the multihash to test it fails with a wrong multihash error
    67  	update.data[1] = 79
    68  	if err := update.binaryPut(serializedUpdate); err == nil {
    69  		t.Fatal("Expected resourceUpdate.binaryPut to fail since data contains an invalid multihash")
    70  	}
    71  
    72  }