72 lines
1.7 KiB
Go
72 lines
1.7 KiB
Go
// Copyright (c) 2017-2020 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/v4/chaingen"
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"github.com/decred/dcrd/chaincfg/v3"
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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 first 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.RegNetParams()
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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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// First block.
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// ---------------------------------------------------------------------
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// Add the required first block.
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//
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// genesis -> bfb
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g.CreateBlockOne("bfb", 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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// bfb
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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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