Enhance Unit Tests for Annotations

Adds unit tests for a variety of different annotations.

internal/ingress/annotations/upstreamvhost/main_test.go

@@ -0,0 +1,55 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package upstreamvhost
+
+import (
+	"testing"
+
+	api "k8s.io/api/core/v1"
+	extensions "k8s.io/api/extensions/v1beta1"
+	meta_v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/ingress-nginx/internal/ingress/annotations/parser"
+	"k8s.io/ingress-nginx/internal/ingress/resolver"
+)
+
+func TestParse(t *testing.T) {
+	ing := &extensions.Ingress{
+		ObjectMeta: meta_v1.ObjectMeta{
+			Name:      "foo",
+			Namespace: api.NamespaceDefault,
+		},
+		Spec: extensions.IngressSpec{},
+	}
+
+	data := map[string]string{}
+	data[parser.GetAnnotationWithPrefix("upstream-vhost")] = "ok.com"
+
+	ing.SetAnnotations(data)
+
+	i, err := NewParser(&resolver.Mock{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error %v", err)
+	}
+
+	vhost, ok := i.(string)
+	if !ok {
+		t.Errorf("expected string but got %v", vhost)
+	}
+	if vhost != "ok.com" {
+		t.Errorf("expected %v but got %v", "ok.com", vhost)
+	}
+}