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// Copyright (C) 2019-2024 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package generator
import (
"fmt"
"testing"
"github.com/algorand/go-algorand/test/partitiontest"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestWeightedSelectionInternalBadInput(t *testing.T) {
partitiontest.PartitionTest(t)
weights := []float32{0.10, 0.30}
options := []interface{}{"10"}
_, err := weightedSelectionInternal(0, weights, options, nil)
require.EqualError(t, err, "number of weights must equal number of options: 2 != 1")
}
func TestWeightedSelectionInternal(t *testing.T) {
partitiontest.PartitionTest(t)
weights := []float32{0.10, 0.30, 0.60}
options := []interface{}{"10", "30", "60"}
testcases := []struct {
selectionNum float32
expected interface{}
}{
{
selectionNum: 0.0,
expected: options[0],
},
{
selectionNum: 0.099,
expected: options[0],
},
{
selectionNum: 0.1,
expected: options[1],
},
{
selectionNum: 0.399,
expected: options[1],
},
{
selectionNum: 0.4,
expected: options[2],
},
{
selectionNum: 0.999,
expected: options[2],
},
}
for _, test := range testcases {
name := fmt.Sprintf("selectionNum %f - expected %v", test.selectionNum, test.expected)
t.Run(name, func(t *testing.T) {
actual, err := weightedSelectionInternal(test.selectionNum, weights, options, nil)
require.NoError(t, err)
require.Equal(t, test.expected, actual)
})
}
}
func TestWeightedSelection(t *testing.T) {
partitiontest.PartitionTest(t)
weights := []float32{0.10, 0.30, 0.60}
options := []interface{}{"10", "30", "60"}
selections := make(map[interface{}]int)
for i := 0; i < 100; i++ {
selected, err := weightedSelection(weights, options, nil)
require.NoError(t, err)
selections[selected]++
}
assert.Less(t, selections[options[0]], selections[options[1]])
assert.Less(t, selections[options[1]], selections[options[2]])
}
func TestWeightedSelectionOutOfRange(t *testing.T) {
partitiontest.PartitionTest(t)
weights := []float32{0.1}
options := []interface{}{"1"}
defaultOption := "DEFAULT!"
for i := 0; i < 10000; i++ {
selection, err := weightedSelection(weights, options, defaultOption)
require.NoError(t, err)
if selection == defaultOption {
return
}
}
assert.Fail(t, "Expected an out of range error by this point.")
}
func TestConvertToGenesisBalance(t *testing.T) {
partitiontest.PartitionTest(t)
balance := []uint64{100, 200, 300}
genesisBalances := convertToGenesisBalances(balance)
require.Equal(t, 3, len(genesisBalances))
for i, bal := range balance {
require.Equal(t, bal, genesisBalances[indexToAccount(uint64(i))].MicroAlgos.Raw)
}
}
func TestIndexToAccountAndAccountToIndex(t *testing.T) {
partitiontest.PartitionTest(t)
account := indexToAccount(1)
fmt.Printf("account: %v\n", account)
for i := uint64(0); i < uint64(100000); i++ {
acct := indexToAccount(i)
result := accountToIndex(acct)
require.Equal(t, i, result)
}
}
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