sigs.k8s.io/controller-runtime@v0.18.2/pkg/metrics/filters/filter_suite_test.go (about)

     1  /*
     2  Copyright 2023 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package filters
    18  
    19  import (
    20  	"fmt"
    21  	"net/http"
    22  	"testing"
    23  
    24  	. "github.com/onsi/ginkgo/v2"
    25  	. "github.com/onsi/gomega"
    26  	"k8s.io/client-go/kubernetes"
    27  	"k8s.io/client-go/rest"
    28  	"sigs.k8s.io/controller-runtime/pkg/envtest"
    29  	logf "sigs.k8s.io/controller-runtime/pkg/log"
    30  	"sigs.k8s.io/controller-runtime/pkg/log/zap"
    31  	metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
    32  )
    33  
    34  func TestSource(t *testing.T) {
    35  	RegisterFailHandler(Fail)
    36  	RunSpecs(t, "Filters Suite")
    37  }
    38  
    39  var testenv *envtest.Environment
    40  var cfg *rest.Config
    41  var clientset *kubernetes.Clientset
    42  
    43  // clientTransport is used to force-close keep-alives in tests that check for leaks.
    44  var clientTransport *http.Transport
    45  
    46  var _ = BeforeSuite(func() {
    47  	logf.SetLogger(zap.New(zap.WriteTo(GinkgoWriter), zap.UseDevMode(true)))
    48  
    49  	testenv = &envtest.Environment{}
    50  
    51  	var err error
    52  	cfg, err = testenv.Start()
    53  	Expect(err).NotTo(HaveOccurred())
    54  
    55  	cfg.WrapTransport = func(rt http.RoundTripper) http.RoundTripper {
    56  		// NB(directxman12): we can't set Transport *and* use TLS options,
    57  		// so we grab the transport right after it gets created so that we can
    58  		// type-assert on it (hopefully)?
    59  		// hopefully this doesn't break 🤞
    60  		transport, isTransport := rt.(*http.Transport)
    61  		if !isTransport {
    62  			panic(fmt.Sprintf("wasn't able to grab underlying transport from REST client's RoundTripper, can't figure out how to close keep-alives: expected an *http.Transport, got %#v", rt))
    63  		}
    64  		clientTransport = transport
    65  		return rt
    66  	}
    67  
    68  	clientset, err = kubernetes.NewForConfig(cfg)
    69  	Expect(err).NotTo(HaveOccurred())
    70  
    71  	// Prevent the metrics listener being created
    72  	metricsserver.DefaultBindAddress = "0"
    73  })
    74  
    75  var _ = AfterSuite(func() {
    76  	Expect(testenv.Stop()).To(Succeed())
    77  
    78  	// Put the DefaultBindAddress back
    79  	metricsserver.DefaultBindAddress = ":8080"
    80  })