github.com/SmartMeshFoundation/Spectrum@v0.0.0-20220621030607-452a266fee1e/consensus/ethash/algorithm_go1.8_test.go (about)

     1  // Copyright 2017 The Spectrum Authors
     2  // This file is part of the Spectrum library.
     3  //
     4  // The Spectrum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The Spectrum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the Spectrum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  // +build go1.8
    18  
    19  package ethash
    20  
    21  import "testing"
    22  
    23  // Tests whether the dataset size calculator works correctly by cross checking the
    24  // hard coded lookup table with the value generated by it.
    25  func TestSizeCalculations(t *testing.T) {
    26  	var tests []uint64
    27  
    28  	// Verify all the cache sizes from the lookup table
    29  	defer func(sizes []uint64) { cacheSizes = sizes }(cacheSizes)
    30  	tests, cacheSizes = cacheSizes, []uint64{}
    31  
    32  	for i, test := range tests {
    33  		if size := cacheSize(uint64(i*epochLength) + 1); size != test {
    34  			t.Errorf("cache %d: cache size mismatch: have %d, want %d", i, size, test)
    35  		}
    36  	}
    37  	// Verify all the dataset sizes from the lookup table
    38  	defer func(sizes []uint64) { datasetSizes = sizes }(datasetSizes)
    39  	tests, datasetSizes = datasetSizes, []uint64{}
    40  
    41  	for i, test := range tests {
    42  		if size := datasetSize(uint64(i*epochLength) + 1); size != test {
    43  			t.Errorf("dataset %d: dataset size mismatch: have %d, want %d", i, size, test)
    44  		}
    45  	}
    46  }