diff --git a/pkg/router/smi_test.go b/pkg/router/smi_test.go
new file mode 100644
index 00000000..73a1a665
--- /dev/null
+++ b/pkg/router/smi_test.go
@@ -0,0 +1,167 @@
+package router
+
+import (
+	"strconv"
+	"testing"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	smiv1 "github.com/weaveworks/flagger/pkg/apis/smi/v1alpha1"
+)
+
+func TestSmiRouter_Sync(t *testing.T) {
+	canary := newTestSMICanary()
+	mocks := newFixture(canary)
+	router := &SmiRouter{
+		logger:        mocks.logger,
+		flaggerClient: mocks.flaggerClient,
+		smiClient:     mocks.meshClient,
+		kubeClient:    mocks.kubeClient,
+	}
+
+	err := router.Reconcile(canary)
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+
+	// test insert
+	ts, err := router.smiClient.SplitV1alpha1().TrafficSplits("default").Get("podinfo", metav1.GetOptions{})
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+	dests := ts.Spec.Backends
+	if len(dests) != 2 {
+		t.Errorf("Got backends %v wanted %v", len(dests), 2)
+	}
+
+	apexName, primaryName, canaryName := canary.GetServiceNames()
+
+	if ts.Spec.Service != apexName {
+		t.Errorf("Got service %v wanted %v", ts.Spec.Service, apexName)
+	}
+
+	var pRoute smiv1.TrafficSplitBackend
+	var cRoute smiv1.TrafficSplitBackend
+	for _, dest := range ts.Spec.Backends {
+		if dest.Service == primaryName {
+			pRoute = dest
+		}
+		if dest.Service == canaryName {
+			cRoute = dest
+		}
+	}
+
+	if pRoute.Weight.String() != strconv.Itoa(100) {
+		t.Errorf("%s weight is %v wanted 100", pRoute.Service, pRoute.Weight)
+	}
+	if cRoute.Weight.String() != strconv.Itoa(0) {
+		t.Errorf("%s weight is %v wanted 0", cRoute.Service, cRoute.Weight)
+	}
+
+	// test update
+	host := "test"
+	canary.Spec.Service.Name = host
+
+	err = router.Reconcile(canary)
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+
+	ts, err = router.smiClient.SplitV1alpha1().TrafficSplits("default").Get("test", metav1.GetOptions{})
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+
+	if ts.Spec.Service != host {
+		t.Errorf("Got service %v wanted %v", ts.Spec.Service, host)
+	}
+}
+
+func TestSmiRouter_SetRoutes(t *testing.T) {
+	canary := newTestSMICanary()
+	mocks := newFixture(canary)
+	router := &SmiRouter{
+		logger:        mocks.logger,
+		flaggerClient: mocks.flaggerClient,
+		smiClient:     mocks.meshClient,
+		kubeClient:    mocks.kubeClient,
+	}
+
+	err := router.Reconcile(mocks.canary)
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+
+	p, c, m, err := router.GetRoutes(mocks.canary)
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+
+	p = 50
+	c = 50
+	m = false
+
+	err = router.SetRoutes(mocks.canary, p, c, m)
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+
+	ts, err := router.smiClient.SplitV1alpha1().TrafficSplits("default").Get("podinfo", metav1.GetOptions{})
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+
+	var pRoute smiv1.TrafficSplitBackend
+	var cRoute smiv1.TrafficSplitBackend
+	_, primaryName, canaryName := canary.GetServiceNames()
+
+	for _, dest := range ts.Spec.Backends {
+		if dest.Service == primaryName {
+			pRoute = dest
+		}
+		if dest.Service == canaryName {
+			cRoute = dest
+		}
+	}
+
+	if pRoute.Weight.String() != strconv.Itoa(p) {
+		t.Errorf("Got primary weight %v wanted %v", pRoute.Weight, p)
+	}
+
+	if cRoute.Weight.String() != strconv.Itoa(c) {
+		t.Errorf("Got canary weight %v wanted %v", cRoute.Weight, c)
+	}
+
+}
+
+func TestSmiRouter_GetRoutes(t *testing.T) {
+	mocks := newFixture(nil)
+	router := &SmiRouter{
+		logger:        mocks.logger,
+		flaggerClient: mocks.flaggerClient,
+		smiClient:     mocks.meshClient,
+		kubeClient:    mocks.kubeClient,
+	}
+
+	err := router.Reconcile(mocks.canary)
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+
+	p, c, m, err := router.GetRoutes(mocks.canary)
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+
+	if p != 100 {
+		t.Errorf("Got primary weight %v wanted %v", p, 100)
+	}
+
+	if c != 0 {
+		t.Errorf("Got canary weight %v wanted %v", c, 0)
+	}
+
+	if m != false {
+		t.Errorf("Got mirror %v wanted %v", m, false)
+	}
+}