1 files changed, 97 insertions, 0 deletions
diff --git a/node/service_test.go b/node/service_test.go
new file mode 100644
index 000000000..1dfb61f73
--- /dev/null
+++ b/node/service_test.go
@@ -0,0 +1,97 @@
+// Copyright 2015 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package node
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+// Tests that databases are correctly created persistent or ephemeral based on
+// the configured service context.
+func TestContextDatabases(t *testing.T) {
+	// Create a temporary folder and ensure no database is contained within
+	dir, err := ioutil.TempDir("", "")
+	if err != nil {
+		t.Fatalf("failed to create temporary data directory: %v", err)
+	}
+	defer os.RemoveAll(dir)
+
+	if _, err := os.Stat(filepath.Join(dir, "database")); err == nil {
+		t.Fatalf("non-created database already exists")
+	}
+	// Request the opening/creation of a database and ensure it persists to disk
+	ctx := &ServiceContext{datadir: dir}
+	db, err := ctx.OpenDatabase("persistent", 0)
+	if err != nil {
+		t.Fatalf("failed to open persistent database: %v", err)
+	}
+	db.Close()
+
+	if _, err := os.Stat(filepath.Join(dir, "persistent")); err != nil {
+		t.Fatalf("persistent database doesn't exists: %v", err)
+	}
+	// Request th opening/creation of an ephemeral database and ensure it's not persisted
+	ctx = &ServiceContext{datadir: ""}
+	db, err = ctx.OpenDatabase("ephemeral", 0)
+	if err != nil {
+		t.Fatalf("failed to open ephemeral database: %v", err)
+	}
+	db.Close()
+
+	if _, err := os.Stat(filepath.Join(dir, "ephemeral")); err == nil {
+		t.Fatalf("ephemeral database exists")
+	}
+}
+
+// Tests that already constructed services can be retrieves by later ones.
+func TestContextServices(t *testing.T) {
+	stack, err := New(testNodeConfig)
+	if err != nil {
+		t.Fatalf("failed to create protocol stack: %v", err)
+	}
+	// Define a verifier that ensures a NoopA is before it and NoopB after
+	verifier := func(ctx *ServiceContext) (Service, error) {
+		var objA *NoopServiceA
+		if ctx.Service(&objA) != nil {
+			return nil, fmt.Errorf("former service not found")
+		}
+		var objB *NoopServiceB
+		if err := ctx.Service(&objB); err != ErrServiceUnknown {
+			return nil, fmt.Errorf("latters lookup error mismatch: have %v, want %v", err, ErrServiceUnknown)
+		}
+		return new(NoopService), nil
+	}
+	// Register the collection of services
+	if err := stack.Register(NewNoopServiceA); err != nil {
+		t.Fatalf("former failed to register service: %v", err)
+	}
+	if err := stack.Register(verifier); err != nil {
+		t.Fatalf("failed to register service verifier: %v", err)
+	}
+	if err := stack.Register(NewNoopServiceB); err != nil {
+		t.Fatalf("latter failed to register service: %v", err)
+	}
+	// Start the protocol stack and ensure services are constructed in order
+	if err := stack.Start(); err != nil {
+		t.Fatalf("failed to start stack: %v", err)
+	}
+	defer stack.Stop()
+}