3b5c2baa2e
This takes care of a few minor nits on the recently merged subscribe code. In particular: - Avoid extra unnecessary allocation on notifications slice - Avoid defer overhead on notification mutex in sendNotifications - Make test function comment start with the name of the function per Effective Go guidelines - Use constant for number of subscribers in test - Don't exceed column 80 in test print
53 lines
1.4 KiB
Go
53 lines
1.4 KiB
Go
// Copyright (c) 2017 The btcsuite 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 blockchain_test
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import (
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"testing"
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"github.com/btcsuite/btcd/blockchain"
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"github.com/btcsuite/btcd/chaincfg"
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)
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// TestNotifications ensures that notification callbacks are fired on events.
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func TestNotifications(t *testing.T) {
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blocks, err := loadBlocks("blk_0_to_4.dat.bz2")
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if err != nil {
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t.Fatalf("Error loading file: %v\n", err)
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}
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// Create a new database and chain instance to run tests against.
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chain, teardownFunc, err := chainSetup("notifications",
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&chaincfg.MainNetParams)
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if err != nil {
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t.Fatalf("Failed to setup chain instance: %v", err)
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}
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defer teardownFunc()
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notificationCount := 0
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callback := func(notification *blockchain.Notification) {
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if notification.Type == blockchain.NTBlockAccepted {
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notificationCount++
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}
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}
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// Register callback multiple times then assert it is called that many
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// times.
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const numSubscribers = 3
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for i := 0; i < numSubscribers; i++ {
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chain.Subscribe(callback)
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}
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_, _, err = chain.ProcessBlock(blocks[1], blockchain.BFNone)
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if err != nil {
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t.Fatalf("ProcessBlock fail on block 1: %v\n", err)
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}
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if notificationCount != numSubscribers {
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t.Fatalf("Expected notification callback to be executed %d "+
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"times, found %d", numSubscribers, notificationCount)
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}
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}
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