a62155587d
This introduces a new package named chaingen that is useful for generating full-blown valid test chains. It is primarily a refactor of the generator code that was previously in fullblocktests. It also updates the fullblocktests package to make use of this new chaingen package and removes the stakeversiontests package in favor of performing all of the same tests inline making use of the new chaingen package.
72 lines
1.7 KiB
Go
72 lines
1.7 KiB
Go
// Copyright (c) 2017 The Decred developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package chaingen_test
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import (
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"fmt"
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"github.com/decred/dcrd/blockchain/chaingen"
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"github.com/decred/dcrd/chaincfg"
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)
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// This example demonstrates creating a new generator instance and using it to
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// generate the required premine block and enough blocks to have mature coinbase
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// outputs to work with along with asserting the generator state along the way.
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func Example_basicUsage() {
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params := &chaincfg.SimNetParams
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g, err := chaingen.MakeGenerator(params)
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if err != nil {
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fmt.Println(err)
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return
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}
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// Shorter versions of useful params for convenience.
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coinbaseMaturity := params.CoinbaseMaturity
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// ---------------------------------------------------------------------
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// Premine.
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// ---------------------------------------------------------------------
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// Add the required premine block.
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//
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// genesis -> bp
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g.CreatePremineBlock("bp", 0)
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g.AssertTipHeight(1)
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fmt.Println(g.TipName())
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// ---------------------------------------------------------------------
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// Generate enough blocks to have mature coinbase outputs to work with.
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//
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// genesis -> bp -> bm0 -> bm1 -> ... -> bm#
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// ---------------------------------------------------------------------
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for i := uint16(0); i < coinbaseMaturity; i++ {
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blockName := fmt.Sprintf("bm%d", i)
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g.NextBlock(blockName, nil, nil)
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g.SaveTipCoinbaseOuts()
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fmt.Println(g.TipName())
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}
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g.AssertTipHeight(uint32(coinbaseMaturity) + 1)
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// Output:
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// bp
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// bm0
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// bm1
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// bm2
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// bm3
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// bm4
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// bm5
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// bm6
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// bm7
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// bm8
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// bm9
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// bm10
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// bm11
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// bm12
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// bm13
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// bm14
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// bm15
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}
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