mirror of
https://github.com/FlipsideCrypto/dcrd.git
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cba25b056d
The current network parameter definitions are all package-level globals which have a few undesirable characteristics: - They are subject to mutation and thus can easily cause subtle and hard to find bugs - Many of the fields are defined in terms of others, but due to the struct being defined at the top level, it's not possible to reference other fields within it - They require a lot of unexported global variable state - It makes it difficult to introduce a base set of parameters that would likely help highlight exactly what the differences are between the networks Consequently, this converts all of the global network parameter defintions to functions that return a new instance of the relevant parameters which either directly addresses the aforementioned point, or at the very least, allows them to be addresses in future commits. The following is a high level overview of the changes: - Move all default definitions into functions that return a new instance of the relevant params - Move global defintions of variables used in the structs into the relevant funcs - Improve consistency in the tests for each set of network params - Update example in README.md - Update example doc.go
53 lines
1.9 KiB
Go
53 lines
1.9 KiB
Go
// Copyright (c) 2014-2016 The btcsuite developers
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// Copyright (c) 2015-2019 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 chaincfg
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import (
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"bytes"
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"encoding/hex"
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"testing"
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"github.com/davecgh/go-spew/spew"
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)
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// TestGenesisBlock tests the genesis block of the main network for validity by
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// checking the encoded bytes and hashes.
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func TestGenesisBlock(t *testing.T) {
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genesisBlockBytes, _ := hex.DecodeString("0100000000000000000000000000" +
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"000000000000000000000000000000000000000000000dc101dfc3c6a2eb10ca0" +
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"c5374e10d28feb53f7eabcc850511ceadb99174aa660000000000000000000000" +
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"00000000000000000000000000000000000000000000000000000000000000000" +
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"000000000ffff011b00c2eb0b000000000000000000000000a0d7b85600000000" +
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"00000000000000000000000000000000000000000000000000000000000000000" +
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"00000000101000000010000000000000000000000000000000000000000000000" +
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"000000000000000000ffffffff00ffffffff01000000000000000000002080167" +
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"9e98561ada96caec2949a5d41c4cab3851eb740d951c10ecbcf265c1fd9000000" +
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"000000000001ffffffffffffffff00000000ffffffff02000000")
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// Encode the genesis block to raw bytes.
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params := MainNetParams()
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var buf bytes.Buffer
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err := params.GenesisBlock.Serialize(&buf)
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if err != nil {
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t.Fatalf("TestGenesisBlock: %v", err)
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}
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// Ensure the encoded block matches the expected bytes.
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if !bytes.Equal(buf.Bytes(), genesisBlockBytes) {
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t.Fatalf("TestGenesisBlock: Genesis block does not appear valid - "+
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"got %v, want %v", spew.Sdump(buf.Bytes()),
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spew.Sdump(genesisBlockBytes))
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}
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// Check hash of the block against expected hash.
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hash := params.GenesisBlock.BlockHash()
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if !params.GenesisHash.IsEqual(&hash) {
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t.Fatalf("TestGenesisBlock: Genesis block hash does not "+
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"appear valid - got %v, want %v", spew.Sdump(hash),
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spew.Sdump(params.GenesisHash))
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}
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}
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