diff --git a/bridge/cmd/app/bridge_app.go b/bridge/cmd/app/bridge_app.go
index 04e738b75..18d7faf94 100644
--- a/bridge/cmd/app/bridge_app.go
+++ b/bridge/cmd/app/bridge_app.go
@@ -38,6 +38,9 @@ func NewBridgeApp(base *docker.App, file string) *BridgeApp {
 		bridgeFile: bridgeFile,
 		args:       []string{"--log.debug", "--config", bridgeFile},
 	}
+	if err := bridgeApp.MockConfig(true); err != nil {
+		panic(err)
+	}
 	return bridgeApp
 }
 
diff --git a/bridge/tests/bridge_test.go b/bridge/tests/bridge_test.go
index 1b8fc7d82..c37a31fb0 100644
--- a/bridge/tests/bridge_test.go
+++ b/bridge/tests/bridge_test.go
@@ -54,10 +54,6 @@ var (
 func TestMain(m *testing.M) {
 	base = docker.NewDockerApp()
 	bridgeApp = app.NewBridgeApp(base, "../config.json")
-	err := bridgeApp.MockConfig(false)
-	if err != nil {
-		panic(err)
-	}
 	// Load config.
 	cfg = bridgeApp.Config
 
diff --git a/coordinator/cmd/app/mock_app.go b/coordinator/cmd/app/mock_app.go
index e8e42ba46..e241a1e8f 100644
--- a/coordinator/cmd/app/mock_app.go
+++ b/coordinator/cmd/app/mock_app.go
@@ -47,7 +47,7 @@ func NewCoordinatorApp(base *docker.App, file string) *CoordinatorApp {
 		WSPort:          wsPort,
 		args:            []string{"--log.debug", "--config", coordinatorFile, "--ws", "--ws.port", strconv.Itoa(int(wsPort))},
 	}
-	if err := coordinatorApp.mockConfig(true); err != nil {
+	if err := coordinatorApp.MockConfig(true); err != nil {
 		panic(err)
 	}
 	return coordinatorApp
@@ -72,8 +72,8 @@ func (c *CoordinatorApp) WSEndpoint() string {
 	return fmt.Sprintf("ws://localhost:%d", c.WSPort)
 }
 
-// mockConfig creates a new coordinator config.
-func (c *CoordinatorApp) mockConfig(store bool) error {
+// MockConfig creates a new coordinator config.
+func (c *CoordinatorApp) MockConfig(store bool) error {
 	base := c.base
 	cfg, err := coordinatorConfig.NewConfig(c.originFile)
 	if err != nil {
diff --git a/roller/cmd/app/mock_app.go b/roller/cmd/app/mock_app.go
index fdc09548f..16c70f254 100644
--- a/roller/cmd/app/mock_app.go
+++ b/roller/cmd/app/mock_app.go
@@ -55,7 +55,7 @@ func NewRollerApp(base *docker.App, file string, wsUrl string) *RollerApp {
 		name:       "roller-test",
 		args:       []string{"--log.debug", "--config", rollerFile},
 	}
-	if err := rollerApp.mockConfig(true, wsUrl); err != nil {
+	if err := rollerApp.MockConfig(true, wsUrl); err != nil {
 		panic(err)
 	}
 	return rollerApp
@@ -77,8 +77,8 @@ func (r *RollerApp) Free() {
 	_ = os.Remove(r.bboltDB)
 }
 
-// mockConfig creates a new roller config.
-func (r *RollerApp) mockConfig(store bool, wsUrl string) error {
+// MockConfig creates a new roller config.
+func (r *RollerApp) MockConfig(store bool, wsUrl string) error {
 	cfg, err := rollerConfig.NewConfig(r.originFile)
 	if err != nil {
 		return err
@@ -129,7 +129,7 @@ func (r RollerApps) MockConfigs(store bool, wsUrl string) error {
 	for _, roller := range r {
 		roller := roller
 		eg.Go(func() error {
-			return roller.mockConfig(store, wsUrl)
+			return roller.MockConfig(store, wsUrl)
 		})
 	}
 	return eg.Wait()