Files
node/utils/sampler/weighted_without_replacement_test.go
zeekay 7cf87b230b node-unified is the node
The module already called itself github.com/luxfi/node while containing no node
in Go: cmd/luxd was twenty-one lines that printed the size of a few types, and
the Go column of the matrix measured a VM plugin. A repo that fetches the thing
it claims to be has not replaced it, so the Go sources move in — 1515 files,
the daemon and everything under it — and the build reaches outside this module
for nothing.

Rust and C++ sit beside it unchanged and are still measured against it by the
differential. That is the point of one repo: the reference implementation and
the two ports are the same checkout, so parity is a thing you can run rather
than a thing you assert.

Verified: builds, and the closure carries no lux-private — checked at build time
rather than believed. The daemon starts twelve chains on a local network
(P X C Q Z A B G K M F, plus D through its plugin) and reports healthy.
2026-09-07 16:15:25 -07:00

88 lines
1.9 KiB
Go

// Copyright (C) 2019-2025, Lux Industries Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package sampler
import (
"math"
"slices"
"testing"
"github.com/stretchr/testify/require"
safemath "github.com/luxfi/math"
)
func TestWeightedWithoutReplacementInitializeOverflow(t *testing.T) {
s := NewWeightedWithoutReplacement()
err := s.Initialize([]uint64{1, math.MaxUint64})
require.ErrorIs(t, err, safemath.ErrOverflow)
}
func TestWeightedWithoutReplacementOutOfRange(t *testing.T) {
require := require.New(t)
s := NewWeightedWithoutReplacement()
require.NoError(s.Initialize([]uint64{1}))
_, ok := s.Sample(2)
require.False(ok)
}
func TestWeightedWithoutReplacementEmptyWithoutWeight(t *testing.T) {
require := require.New(t)
s := NewWeightedWithoutReplacement()
require.NoError(s.Initialize(nil))
indices, ok := s.Sample(0)
require.True(ok)
require.Empty(indices)
}
func TestWeightedWithoutReplacementEmpty(t *testing.T) {
require := require.New(t)
s := NewWeightedWithoutReplacement()
require.NoError(s.Initialize([]uint64{1}))
indices, ok := s.Sample(0)
require.True(ok)
require.Empty(indices)
}
func TestWeightedWithoutReplacementSingleton(t *testing.T) {
require := require.New(t)
s := NewWeightedWithoutReplacement()
require.NoError(s.Initialize([]uint64{1}))
indices, ok := s.Sample(1)
require.True(ok)
require.Equal([]int{0}, indices)
}
func TestWeightedWithoutReplacementWithZero(t *testing.T) {
require := require.New(t)
s := NewWeightedWithoutReplacement()
require.NoError(s.Initialize([]uint64{0, 1}))
indices, ok := s.Sample(1)
require.True(ok)
require.Equal([]int{1}, indices)
}
func TestWeightedWithoutReplacementDistribution(t *testing.T) {
require := require.New(t)
s := NewWeightedWithoutReplacement()
require.NoError(s.Initialize([]uint64{1, 1, 2}))
indices, ok := s.Sample(4)
require.True(ok)
slices.Sort(indices)
require.Equal([]int{0, 1, 2, 2}, indices)
}