mirror of
https://source.quilibrium.com/quilibrium/ceremonyclient.git
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43 lines
1.3 KiB
Go
43 lines
1.3 KiB
Go
//go:build race
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// +build race
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// Copyright 2020 The LevelDB-Go and Pebble Authors. All rights reserved. Use
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// of this source code is governed by a BSD-style license that can be found in
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// the LICENSE file.
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package arenaskl
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import (
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"testing"
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"github.com/stretchr/testify/require"
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)
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// TestNodeArenaEnd tests allocating a node at the boundary of an arena. In Go
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// 1.14 when the race detector is running, Go will also perform some pointer
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// alignment checks. It will detect alignment issues, for example #667 where a
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// node's memory would straddle the arena boundary, with unused regions of the
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// node struct dipping into unallocated memory. This test is only run when the
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// race build tag is provided.
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func TestNodeArenaEnd(t *testing.T) {
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ikey := makeIkey("a")
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val := []byte("b")
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// Rather than hardcode an arena size at just the right size, try
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// allocating using successively larger arena sizes until we allocate
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// successfully. The prior attempt will have exercised the right code
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// path.
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for i := uint32(1); i < 256; i++ {
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a := newArena(i)
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_, err := newNode(a, 1, ikey, val)
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if err == nil {
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// We reached an arena size big enough to allocate a node.
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// If there's an issue at the boundary, the race detector would
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// have found it by now.
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t.Log(i)
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break
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}
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require.Equal(t, ErrArenaFull, err)
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}
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}
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