diff --git a/cmd/syncthing/gui_test.go b/cmd/syncthing/gui_test.go
index fdc37762..0d9a112a 100644
--- a/cmd/syncthing/gui_test.go
+++ b/cmd/syncthing/gui_test.go
@@ -175,3 +175,23 @@ func TestDirNames(t *testing.T) {
 		t.Errorf("Unexpected dirNames return: %#v\n%s", names, diff)
 	}
 }
+
+func TestInstantiateAPIService(t *testing.T) {
+	model := new(mockedModel)
+	cfg := new(mockedConfig)
+	httpsCertFile := "../../test/h1/https-cert.pem"
+	httpsKeyFile := "../../test/h1/https-key.pem"
+	assetDir := "../../gui"
+	eventSub := new(mockedEventSub)
+	discoverer := new(mockedCachingMux)
+	relayService := new(mockedRelayService)
+	errorLog := new(mockedLoggerRecorder)
+	systemLog := new(mockedLoggerRecorder)
+
+	svc, err := newAPIService(protocol.LocalDeviceID, cfg, httpsCertFile, httpsKeyFile, assetDir, model,
+		eventSub, discoverer, relayService, errorLog, systemLog)
+	if err != nil {
+		t.Fatal(err)
+	}
+	_ = svc
+}
diff --git a/cmd/syncthing/mocked_config_test.go b/cmd/syncthing/mocked_config_test.go
new file mode 100644
index 00000000..78ac526b
--- /dev/null
+++ b/cmd/syncthing/mocked_config_test.go
@@ -0,0 +1,44 @@
+// Copyright (C) 2016 The Syncthing Authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package main
+
+import (
+	"github.com/syncthing/syncthing/lib/config"
+	"github.com/syncthing/syncthing/lib/protocol"
+)
+
+type mockedConfig struct{}
+
+func (c *mockedConfig) GUI() config.GUIConfiguration {
+	return config.GUIConfiguration{}
+}
+
+func (c *mockedConfig) Raw() config.Configuration {
+	return config.Configuration{}
+}
+
+func (c *mockedConfig) Options() config.OptionsConfiguration {
+	return config.OptionsConfiguration{}
+}
+
+func (c *mockedConfig) Replace(cfg config.Configuration) config.CommitResponse {
+	return config.CommitResponse{}
+}
+
+func (c *mockedConfig) Subscribe(cm config.Committer) {}
+
+func (c *mockedConfig) Folders() map[string]config.FolderConfiguration {
+	return nil
+}
+
+func (c *mockedConfig) Devices() map[protocol.DeviceID]config.DeviceConfiguration {
+	return nil
+}
+
+func (c *mockedConfig) Save() error {
+	return nil
+}
diff --git a/cmd/syncthing/mocked_discovery_test.go b/cmd/syncthing/mocked_discovery_test.go
new file mode 100644
index 00000000..4d8b9190
--- /dev/null
+++ b/cmd/syncthing/mocked_discovery_test.go
@@ -0,0 +1,52 @@
+// Copyright (C) 2016 The Syncthing Authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package main
+
+import (
+	"time"
+
+	"github.com/syncthing/syncthing/lib/discover"
+	"github.com/syncthing/syncthing/lib/protocol"
+)
+
+type mockedCachingMux struct{}
+
+// from suture.Service
+
+func (m *mockedCachingMux) Serve() {
+	select {}
+}
+
+func (m *mockedCachingMux) Stop() {
+}
+
+// from events.Finder
+
+func (m *mockedCachingMux) Lookup(deviceID protocol.DeviceID) (direct []string, relays []discover.Relay, err error) {
+	return nil, nil, nil
+}
+
+func (m *mockedCachingMux) Error() error {
+	return nil
+}
+
+func (m *mockedCachingMux) String() string {
+	return "mockedCachingMux"
+}
+
+func (m *mockedCachingMux) Cache() map[protocol.DeviceID]discover.CacheEntry {
+	return nil
+}
+
+// from events.CachingMux
+
+func (m *mockedCachingMux) Add(finder discover.Finder, cacheTime, negCacheTime time.Duration, priority int) {
+}
+
+func (m *mockedCachingMux) ChildErrors() map[string]error {
+	return nil
+}
diff --git a/cmd/syncthing/mocked_events_test.go b/cmd/syncthing/mocked_events_test.go
new file mode 100644
index 00000000..e7ce47fb
--- /dev/null
+++ b/cmd/syncthing/mocked_events_test.go
@@ -0,0 +1,15 @@
+// Copyright (C) 2016 The Syncthing Authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package main
+
+import "github.com/syncthing/syncthing/lib/events"
+
+type mockedEventSub struct{}
+
+func (s *mockedEventSub) Since(id int, into []events.Event) []events.Event {
+	select {}
+}
diff --git a/cmd/syncthing/mocked_logger_test.go b/cmd/syncthing/mocked_logger_test.go
new file mode 100644
index 00000000..a2a42e6e
--- /dev/null
+++ b/cmd/syncthing/mocked_logger_test.go
@@ -0,0 +1,21 @@
+// Copyright (C) 2016 The Syncthing Authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package main
+
+import (
+	"time"
+
+	"github.com/syncthing/syncthing/lib/logger"
+)
+
+type mockedLoggerRecorder struct{}
+
+func (r *mockedLoggerRecorder) Since(t time.Time) []logger.Line {
+	select {}
+}
+
+func (r *mockedLoggerRecorder) Clear() {}
diff --git a/cmd/syncthing/mocked_model_test.go b/cmd/syncthing/mocked_model_test.go
new file mode 100644
index 00000000..141c9f75
--- /dev/null
+++ b/cmd/syncthing/mocked_model_test.go
@@ -0,0 +1,115 @@
+// Copyright (C) 2016 The Syncthing Authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package main
+
+import (
+	"time"
+
+	"github.com/syncthing/syncthing/lib/db"
+	"github.com/syncthing/syncthing/lib/protocol"
+	"github.com/syncthing/syncthing/lib/stats"
+)
+
+type mockedModel struct{}
+
+func (m *mockedModel) GlobalDirectoryTree(folder, prefix string, levels int, dirsonly bool) map[string]interface{} {
+	return nil
+}
+
+func (m *mockedModel) Completion(device protocol.DeviceID, folder string) float64 {
+	return 0
+}
+
+func (m *mockedModel) Override(folder string) {}
+
+func (m *mockedModel) NeedFolderFiles(folder string, page, perpage int) ([]db.FileInfoTruncated, []db.FileInfoTruncated, []db.FileInfoTruncated, int) {
+	return nil, nil, nil, 0
+}
+
+func (m *mockedModel) NeedSize(folder string) (nfiles int, bytes int64) {
+	return 0, 0
+}
+
+func (m *mockedModel) ConnectionStats() map[string]interface{} {
+	return nil
+}
+
+func (m *mockedModel) DeviceStatistics() map[string]stats.DeviceStatistics {
+	return nil
+}
+
+func (m *mockedModel) FolderStatistics() map[string]stats.FolderStatistics {
+	return nil
+}
+
+func (m *mockedModel) CurrentFolderFile(folder string, file string) (protocol.FileInfo, bool) {
+	return protocol.FileInfo{}, false
+}
+
+func (m *mockedModel) CurrentGlobalFile(folder string, file string) (protocol.FileInfo, bool) {
+	return protocol.FileInfo{}, false
+}
+
+func (m *mockedModel) ResetFolder(folder string) {
+}
+
+func (m *mockedModel) Availability(folder, file string) []protocol.DeviceID {
+	return nil
+}
+
+func (m *mockedModel) GetIgnores(folder string) ([]string, []string, error) {
+	return nil, nil, nil
+}
+
+func (m *mockedModel) SetIgnores(folder string, content []string) error {
+	return nil
+}
+
+func (m *mockedModel) PauseDevice(device protocol.DeviceID) {
+}
+
+func (m *mockedModel) ResumeDevice(device protocol.DeviceID) {}
+
+func (m *mockedModel) DelayScan(folder string, next time.Duration) {}
+
+func (m *mockedModel) ScanFolder(folder string) error {
+	return nil
+}
+
+func (m *mockedModel) ScanFolders() map[string]error {
+	return nil
+}
+
+func (m *mockedModel) ScanFolderSubs(folder string, subs []string) error {
+	return nil
+}
+
+func (m *mockedModel) BringToFront(folder, file string) {}
+
+func (m *mockedModel) ConnectedTo(deviceID protocol.DeviceID) bool {
+	return false
+}
+
+func (m *mockedModel) GlobalSize(folder string) (nfiles, deleted int, bytes int64) {
+	return 0, 0, 0
+}
+
+func (m *mockedModel) LocalSize(folder string) (nfiles, deleted int, bytes int64) {
+	return 0, 0, 0
+}
+
+func (m *mockedModel) CurrentLocalVersion(folder string) (int64, bool) {
+	return 0, false
+}
+
+func (m *mockedModel) RemoteLocalVersion(folder string) (int64, bool) {
+	return 0, false
+}
+
+func (m *mockedModel) State(folder string) (string, time.Time, error) {
+	return "", time.Time{}, nil
+}
diff --git a/cmd/syncthing/mocked_relay_test.go b/cmd/syncthing/mocked_relay_test.go
new file mode 100644
index 00000000..211bfdbd
--- /dev/null
+++ b/cmd/syncthing/mocked_relay_test.go
@@ -0,0 +1,37 @@
+// Copyright (C) 2016 The Syncthing Authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package main
+
+import (
+	"crypto/tls"
+	"time"
+)
+
+type mockedRelayService struct{}
+
+// from suture.Service
+
+func (s *mockedRelayService) Serve() {
+	select {}
+}
+
+func (s *mockedRelayService) Stop() {
+}
+
+// from relay.Service
+
+func (s *mockedRelayService) Accept() *tls.Conn {
+	return nil
+}
+
+func (s *mockedRelayService) Relays() []string {
+	return nil
+}
+
+func (s *mockedRelayService) RelayStatus(uri string) (time.Duration, bool) {
+	return 0, false
+}