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testutils.go
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testutils.go
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package testutils
import (
"fmt"
"github.com/go-logr/logr"
"github.com/weaveworks/weave-gitops/pkg/kube"
"github.com/weaveworks/weave-gitops/pkg/runner"
fakelogr "github.com/weaveworks/weave-gitops/pkg/vendorfakes/logr"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/envtest"
wego "github.com/weaveworks/weave-gitops/api/v1alpha1"
ctrl "sigs.k8s.io/controller-runtime"
"github.com/fluxcd/go-git-providers/gitprovider"
kustomizev1 "github.com/fluxcd/kustomize-controller/api/v1beta1"
. "github.com/onsi/gomega"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/client-go/discovery"
memory "k8s.io/client-go/discovery/cached"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/restmapper"
)
var k8sEnv *K8sTestEnv
type K8sTestEnv struct {
Client client.Client
DynClient dynamic.Interface
RestMapper *restmapper.DeferredDiscoveryRESTMapper
Stop func()
}
// Starts a local k8s test environment for testing Kubernetes operations such as Create, Get, Delete, etc
func StartK8sTestEnvironment() (*K8sTestEnv, error) {
if k8sEnv != nil {
return k8sEnv, nil
}
testEnv := &envtest.Environment{
CRDDirectoryPaths: []string{
"../../manifests/crds",
"../../tools/testcrds",
},
}
var err error
cfg, err := testEnv.Start()
if err != nil {
return nil, fmt.Errorf("could not start testEnv: %w", err)
}
scheme := kube.CreateScheme()
k8sManager, err := ctrl.NewManager(cfg, ctrl.Options{
ClientDisableCacheFor: []client.Object{
&wego.Application{},
&corev1.Namespace{},
&corev1.Secret{},
&appsv1.Deployment{},
&kustomizev1.Kustomization{},
},
Scheme: scheme,
})
if err != nil {
return nil, fmt.Errorf("could not create controller manager: %w", err)
}
go func() {
err := k8sManager.Start(ctrl.SetupSignalHandler())
Expect(err).ToNot(HaveOccurred())
}()
dc, err := discovery.NewDiscoveryClientForConfig(cfg)
if err != nil {
return nil, fmt.Errorf("failed to initialize discovery client: %s", err)
}
mapper := restmapper.NewDeferredDiscoveryRESTMapper(memory.NewMemCacheClient(dc))
dyn, err := dynamic.NewForConfig(cfg)
if err != nil {
return nil, fmt.Errorf("failed to initialize dynamic client: %s", err)
}
k8sEnv = &K8sTestEnv{
Client: k8sManager.GetClient(),
DynClient: dyn,
RestMapper: mapper,
Stop: func() {
err := testEnv.Stop()
Expect(err).NotTo(HaveOccurred())
},
}
return k8sEnv, nil
}
// MakeFakeLogr returns an API compliant logr object that can be used for unit testing.
// Without these stubs filled in, a nil pointer exception will be thrown on log.V().
func MakeFakeLogr() *fakelogr.FakeLogger {
log := &fakelogr.FakeLogger{}
log.WithValuesStub = func(i ...interface{}) logr.Logger {
return log
}
log.VStub = func(i int) logr.Logger {
return log
}
return log
}
type LocalFluxRunner struct {
runner.Runner
}
func (r *LocalFluxRunner) Run(command string, args ...string) ([]byte, error) {
cmd := "../flux/bin/flux"
return r.Runner.Run(cmd, args...)
}
type DummyPullRequest struct {
}
func (d DummyPullRequest) Get() gitprovider.PullRequestInfo {
return gitprovider.PullRequestInfo{WebURL: ""}
}
func (d DummyPullRequest) APIObject() interface{} {
return nil
}