etcd3 validation showed that several unit tests that depend on apiserver being fully

stood up should be integration tests, not unit tests.

test/integration/examples/apiserver_test.go

@@ -0,0 +1,145 @@
+/*
+Copyright 2016 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 apiserver
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"testing"
+	"time"
+
+	"k8s.io/kubernetes/cmd/libs/go2idl/client-gen/test_apis/testgroup.k8s.io/v1"
+
+	"github.com/stretchr/testify/assert"
+	"k8s.io/kubernetes/examples/apiserver"
+	"k8s.io/kubernetes/pkg/api/unversioned"
+)
+
+var serverIP = fmt.Sprintf("http://localhost:%d", apiserver.InsecurePort)
+
+var groupVersion = v1.SchemeGroupVersion
+
+var groupVersionForDiscovery = unversioned.GroupVersionForDiscovery{
+	GroupVersion: groupVersion.String(),
+	Version:      groupVersion.Version,
+}
+
+func TestRun(t *testing.T) {
+	go func() {
+		if err := apiserver.Run(apiserver.NewServerRunOptions()); err != nil {
+			t.Fatalf("Error in bringing up the server: %v", err)
+		}
+	}()
+	if err := waitForApiserverUp(); err != nil {
+		t.Fatalf("%v", err)
+	}
+	testSwaggerSpec(t)
+	testAPIGroupList(t)
+	testAPIGroup(t)
+	testAPIResourceList(t)
+}
+
+func waitForApiserverUp() error {
+	for start := time.Now(); time.Since(start) < time.Minute; time.Sleep(5 * time.Second) {
+		_, err := http.Get(serverIP)
+		if err == nil {
+			return nil
+		}
+	}
+	return fmt.Errorf("waiting for apiserver timed out")
+}
+
+func readResponse(serverURL string) ([]byte, error) {
+	response, err := http.Get(serverURL)
+	if err != nil {
+		return nil, fmt.Errorf("Error in fetching %s: %v", serverURL, err)
+	}
+	defer response.Body.Close()
+	if response.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("unexpected status: %d for URL: %s, expected status: %d", response.StatusCode, serverURL, http.StatusOK)
+	}
+	contents, err := ioutil.ReadAll(response.Body)
+	if err != nil {
+		return nil, fmt.Errorf("Error reading response from %s: %v", serverURL, err)
+	}
+	return contents, nil
+}
+
+func testSwaggerSpec(t *testing.T) {
+	serverURL := serverIP + "/swaggerapi"
+	_, err := readResponse(serverURL)
+	if err != nil {
+		t.Fatalf("%v", err)
+	}
+}
+
+func testAPIGroupList(t *testing.T) {
+	serverURL := serverIP + "/apis"
+	contents, err := readResponse(serverURL)
+	if err != nil {
+		t.Fatalf("%v", err)
+	}
+	var apiGroupList unversioned.APIGroupList
+	err = json.Unmarshal(contents, &apiGroupList)
+	if err != nil {
+		t.Fatalf("Error in unmarshalling response from server %s: %v", serverURL, err)
+	}
+	assert.Equal(t, 1, len(apiGroupList.Groups))
+	assert.Equal(t, apiGroupList.Groups[0].Name, groupVersion.Group)
+	assert.Equal(t, 1, len(apiGroupList.Groups[0].Versions))
+	assert.Equal(t, apiGroupList.Groups[0].Versions[0], groupVersionForDiscovery)
+	assert.Equal(t, apiGroupList.Groups[0].PreferredVersion, groupVersionForDiscovery)
+}
+
+func testAPIGroup(t *testing.T) {
+	serverURL := serverIP + "/apis/testgroup.k8s.io"
+	contents, err := readResponse(serverURL)
+	if err != nil {
+		t.Fatalf("%v", err)
+	}
+	var apiGroup unversioned.APIGroup
+	err = json.Unmarshal(contents, &apiGroup)
+	if err != nil {
+		t.Fatalf("Error in unmarshalling response from server %s: %v", serverURL, err)
+	}
+	assert.Equal(t, apiGroup.APIVersion, groupVersion.Version)
+	assert.Equal(t, apiGroup.Name, groupVersion.Group)
+	assert.Equal(t, 1, len(apiGroup.Versions))
+	assert.Equal(t, apiGroup.Versions[0].GroupVersion, groupVersion.String())
+	assert.Equal(t, apiGroup.Versions[0].Version, groupVersion.Version)
+	assert.Equal(t, apiGroup.Versions[0], apiGroup.PreferredVersion)
+}
+
+func testAPIResourceList(t *testing.T) {
+	serverURL := serverIP + "/apis/testgroup.k8s.io/v1"
+	contents, err := readResponse(serverURL)
+	if err != nil {
+		t.Fatalf("%v", err)
+	}
+	var apiResourceList unversioned.APIResourceList
+	err = json.Unmarshal(contents, &apiResourceList)
+	if err != nil {
+		t.Fatalf("Error in unmarshalling response from server %s: %v", serverURL, err)
+	}
+	assert.Equal(t, apiResourceList.APIVersion, groupVersion.Version)
+	assert.Equal(t, apiResourceList.GroupVersion, groupVersion.String())
+	assert.Equal(t, 1, len(apiResourceList.APIResources))
+	assert.Equal(t, apiResourceList.APIResources[0].Name, "testtypes")
+	assert.True(t, apiResourceList.APIResources[0].Namespaced)
+}