98 lines
3.3 KiB
Go
98 lines
3.3 KiB
Go
// Copyright 2015 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 node
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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)
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// Tests that databases are correctly created persistent or ephemeral based on
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// the configured service context.
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func TestContextDatabases(t *testing.T) {
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// Create a temporary folder and ensure no database is contained within
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dir, err := ioutil.TempDir("", "")
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if err != nil {
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t.Fatalf("failed to create temporary data directory: %v", err)
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}
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defer os.RemoveAll(dir)
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if _, err := os.Stat(filepath.Join(dir, "database")); err == nil {
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t.Fatalf("non-created database already exists")
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}
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// Request the opening/creation of a database and ensure it persists to disk
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ctx := &ServiceContext{datadir: dir}
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db, err := ctx.OpenDatabase("persistent", 0)
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if err != nil {
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t.Fatalf("failed to open persistent database: %v", err)
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}
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db.Close()
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if _, err := os.Stat(filepath.Join(dir, "persistent")); err != nil {
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t.Fatalf("persistent database doesn't exists: %v", err)
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}
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// Request th opening/creation of an ephemeral database and ensure it's not persisted
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ctx = &ServiceContext{datadir: ""}
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db, err = ctx.OpenDatabase("ephemeral", 0)
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if err != nil {
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t.Fatalf("failed to open ephemeral database: %v", err)
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}
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db.Close()
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if _, err := os.Stat(filepath.Join(dir, "ephemeral")); err == nil {
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t.Fatalf("ephemeral database exists")
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}
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}
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// Tests that already constructed services can be retrieves by later ones.
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func TestContextServices(t *testing.T) {
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stack, err := New(testNodeConfig())
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if err != nil {
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t.Fatalf("failed to create protocol stack: %v", err)
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}
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// Define a verifier that ensures a NoopA is before it and NoopB after
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verifier := func(ctx *ServiceContext) (Service, error) {
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var objA *NoopServiceA
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if ctx.Service(&objA) != nil {
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return nil, fmt.Errorf("former service not found")
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}
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var objB *NoopServiceB
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if err := ctx.Service(&objB); err != ErrServiceUnknown {
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return nil, fmt.Errorf("latters lookup error mismatch: have %v, want %v", err, ErrServiceUnknown)
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}
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return new(NoopService), nil
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}
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// Register the collection of services
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if err := stack.Register(NewNoopServiceA); err != nil {
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t.Fatalf("former failed to register service: %v", err)
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}
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if err := stack.Register(verifier); err != nil {
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t.Fatalf("failed to register service verifier: %v", err)
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}
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if err := stack.Register(NewNoopServiceB); err != nil {
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t.Fatalf("latter failed to register service: %v", err)
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}
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// Start the protocol stack and ensure services are constructed in order
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if err := stack.Start(); err != nil {
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t.Fatalf("failed to start stack: %v", err)
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}
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defer stack.Stop()
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}
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