adds first unit test

internal/config/initialize_test.go

@@ -0,0 +1,22 @@
+package config
+
+import (
+	"testing"
+)
+
+func TestGetDNSNames(t *testing.T) {
+	expected := []string{
+		"exampleService",
+		"exampleService.exampleNameSpace",
+		"exampleService.exampleNameSpace.svc",
+		"exampleService.exampleNameSpace.svc.cluster",
+		"exampleService.exampleNameSpace.svc.cluster.local",
+	}
+	result := getDNSNames("exampleService", "exampleNameSpace")
+	for i := range expected {
+		if result[i] != expected[i] {
+			t.Errorf("getDNSNames() failed to return the expected result, got %s, wanted %s", expected[i], result[i])
+		}
+	}
+	return
+}