88 lines
3.3 KiB
Go
88 lines
3.3 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package miner
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import (
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"testing"
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"github.com/ethereum/go-ethereum/core/types"
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)
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// noopChainRetriever is an implementation of headerRetriever that always
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// returns nil for any requested headers.
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type noopChainRetriever struct{}
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func (r *noopChainRetriever) GetHeaderByNumber(number uint64) *types.Header {
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return nil
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}
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func (r *noopChainRetriever) GetBlockByNumber(number uint64) *types.Block {
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return nil
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}
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// Tests that inserting blocks into the unconfirmed set accumulates them until
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// the desired depth is reached, after which they begin to be dropped.
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func TestUnconfirmedInsertBounds(t *testing.T) {
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limit := uint(10)
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pool := newUnconfirmedBlocks(new(noopChainRetriever), limit)
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for depth := uint64(0); depth < 2*uint64(limit); depth++ {
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// Insert multiple blocks for the same level just to stress it
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for i := 0; i < int(depth); i++ {
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pool.Insert(depth, [32]byte{byte(depth), byte(i)})
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}
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// Validate that no blocks below the depth allowance are left in
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pool.blocks.Do(func(block interface{}) {
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if block := block.(*unconfirmedBlock); block.index+uint64(limit) <= depth {
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t.Errorf("depth %d: block %x not dropped", depth, block.hash)
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}
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})
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}
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}
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// Tests that shifting blocks out of the unconfirmed set works both for normal
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// cases as well as for corner cases such as empty sets, empty shifts or full
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// shifts.
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func TestUnconfirmedShifts(t *testing.T) {
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// Create a pool with a few blocks on various depths
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limit, start := uint(10), uint64(25)
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pool := newUnconfirmedBlocks(new(noopChainRetriever), limit)
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for depth := start; depth < start+uint64(limit); depth++ {
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pool.Insert(depth, [32]byte{byte(depth)})
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}
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// Try to shift below the limit and ensure no blocks are dropped
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pool.Shift(start + uint64(limit) - 1)
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if n := pool.blocks.Len(); n != int(limit) {
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t.Errorf("unconfirmed count mismatch: have %d, want %d", n, limit)
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}
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// Try to shift half the blocks out and verify remainder
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pool.Shift(start + uint64(limit) - 1 + uint64(limit/2))
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if n := pool.blocks.Len(); n != int(limit)/2 {
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t.Errorf("unconfirmed count mismatch: have %d, want %d", n, limit/2)
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}
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// Try to shift all the remaining blocks out and verify emptyness
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pool.Shift(start + 2*uint64(limit))
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if n := pool.blocks.Len(); n != 0 {
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t.Errorf("unconfirmed count mismatch: have %d, want %d", n, 0)
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}
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// Try to shift out from the empty set and make sure it doesn't break
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pool.Shift(start + 3*uint64(limit))
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if n := pool.blocks.Len(); n != 0 {
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t.Errorf("unconfirmed count mismatch: have %d, want %d", n, 0)
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}
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}
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