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package utils
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestRandomNumbers(t *testing.T) {
const (
num = 1000
max = 12345678
)
var values [num]int32
var r Rand
for i := 0; i < num; i++ {
v := r.Int31n(max)
require.GreaterOrEqual(t, v, int32(0))
require.Less(t, v, int32(max))
values[i] = v
}
var sum uint64
for _, n := range values {
sum += uint64(n)
}
average := float64(sum) / num
expectedAverage := float64(max) / 2
tolerance := float64(max) / 25
require.InDelta(t, expectedAverage, average, tolerance)
}
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