mirror of https://github.com/linkerd/linkerd2.git
340 lines
9.7 KiB
Go
340 lines
9.7 KiB
Go
package util
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import (
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"errors"
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"reflect"
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"testing"
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pb "github.com/linkerd/linkerd2/controller/gen/public"
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"github.com/linkerd/linkerd2/pkg/k8s"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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k8sError "k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/apimachinery/pkg/runtime/schema"
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)
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func TestGRPCError(t *testing.T) {
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t.Run("Maps errors to gRPC errors", func(t *testing.T) {
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expectations := map[error]error{
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nil: nil,
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errors.New("normal erro"): errors.New("rpc error: code = Unknown desc = normal erro"),
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status.Error(codes.NotFound, "grpc not found"): errors.New("rpc error: code = NotFound desc = grpc not found"),
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k8sError.NewNotFound(schema.GroupResource{Group: "foo", Resource: "bar"}, "http not found"): errors.New("rpc error: code = NotFound desc = bar.foo \"http not found\" not found"),
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k8sError.NewServiceUnavailable("unavailable"): errors.New("rpc error: code = Unavailable desc = unavailable"),
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k8sError.NewGone("gone"): errors.New("rpc error: code = Internal desc = gone"),
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}
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for in, out := range expectations {
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err := GRPCError(in)
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if err != nil || out != nil {
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if (err == nil && out != nil) ||
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(err != nil && out == nil) ||
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(err.Error() != out.Error()) {
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t.Fatalf("Expected GRPCError to return [%s], got: [%s]", out, GRPCError(in))
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}
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}
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}
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})
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}
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func TestBuildStatSummaryRequest(t *testing.T) {
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t.Run("Maps Kubernetes friendly names to canonical names", func(t *testing.T) {
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expectations := map[string]string{
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"deployments": k8s.Deployment,
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"deployment": k8s.Deployment,
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"deploy": k8s.Deployment,
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"pods": k8s.Pod,
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"pod": k8s.Pod,
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"po": k8s.Pod,
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}
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for friendly, canonical := range expectations {
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statSummaryRequest, err := BuildStatSummaryRequest(
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StatsRequestParams{
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ResourceType: friendly,
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},
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)
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if err != nil {
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t.Fatalf("Unexpected error from BuildStatSummaryRequest [%s => %s]: %s", friendly, canonical, err)
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}
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if statSummaryRequest.Selector.Resource.Type != canonical {
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t.Fatalf("Unexpected resource type from BuildStatSummaryRequest [%s => %s]: %s", friendly, canonical, statSummaryRequest.Selector.Resource.Type)
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}
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}
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})
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t.Run("Parses valid time windows", func(t *testing.T) {
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expectations := []string{
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"1m",
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"60s",
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"1m",
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}
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for _, timeWindow := range expectations {
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statSummaryRequest, err := BuildStatSummaryRequest(
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StatsRequestParams{
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TimeWindow: timeWindow,
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ResourceType: k8s.Deployment,
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},
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)
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if err != nil {
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t.Fatalf("Unexpected error from BuildStatSummaryRequest [%s => %s]", timeWindow, err)
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}
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if statSummaryRequest.TimeWindow != timeWindow {
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t.Fatalf("Unexpected TimeWindow from BuildStatSummaryRequest [%s => %s]", timeWindow, statSummaryRequest.TimeWindow)
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}
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}
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})
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t.Run("Rejects invalid time windows", func(t *testing.T) {
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expectations := map[string]string{
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"1": "time: missing unit in duration 1",
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"s": "time: invalid duration s",
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}
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for timeWindow, msg := range expectations {
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_, err := BuildStatSummaryRequest(
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StatsRequestParams{
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TimeWindow: timeWindow,
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},
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)
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if err == nil {
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t.Fatalf("BuildStatSummaryRequest(%s) unexpectedly succeeded, should have returned %s", timeWindow, msg)
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}
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if err.Error() != msg {
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t.Fatalf("BuildStatSummaryRequest(%s) should have returned: %s but got unexpected message: %s", timeWindow, msg, err)
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}
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}
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})
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t.Run("Rejects invalid Kubernetes resource types", func(t *testing.T) {
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expectations := map[string]string{
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"foo": "cannot find Kubernetes canonical name from friendly name [foo]",
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"": "cannot find Kubernetes canonical name from friendly name []",
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}
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for input, msg := range expectations {
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_, err := BuildStatSummaryRequest(
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StatsRequestParams{
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ResourceType: input,
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},
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)
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if err == nil {
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t.Fatalf("BuildStatSummaryRequest(%s) unexpectedly succeeded, should have returned %s", input, msg)
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}
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if err.Error() != msg {
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t.Fatalf("BuildStatSummaryRequest(%s) should have returned: %s but got unexpected message: %s", input, msg, err)
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}
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}
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})
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}
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func TestBuildTopRoutesRequest(t *testing.T) {
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t.Run("Parses valid time windows", func(t *testing.T) {
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expectations := []string{
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"1m",
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"60s",
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"1m",
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}
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for _, timeWindow := range expectations {
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topRoutesRequest, err := BuildTopRoutesRequest(
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StatsRequestParams{
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TimeWindow: timeWindow,
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ResourceType: k8s.Service,
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},
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)
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if err != nil {
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t.Fatalf("Unexpected error from BuildTopRoutesRequest [%s => %s]", timeWindow, err)
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}
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if topRoutesRequest.TimeWindow != timeWindow {
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t.Fatalf("Unexpected TimeWindow from BuildTopRoutesRequest [%s => %s]", timeWindow, topRoutesRequest.TimeWindow)
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}
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}
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})
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t.Run("Rejects invalid time windows", func(t *testing.T) {
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expectations := map[string]string{
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"1": "time: missing unit in duration 1",
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"s": "time: invalid duration s",
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}
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for timeWindow, msg := range expectations {
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_, err := BuildTopRoutesRequest(
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StatsRequestParams{
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TimeWindow: timeWindow,
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ResourceType: k8s.Service,
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},
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)
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if err == nil {
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t.Fatalf("BuildTopRoutesRequest(%s) unexpectedly succeeded, should have returned %s", timeWindow, msg)
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}
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if err.Error() != msg {
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t.Fatalf("BuildTopRoutesRequest(%s) should have returned: %s but got unexpected message: %s", timeWindow, msg, err)
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}
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}
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})
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t.Run("Rejects non-service Kubernetes resource types", func(t *testing.T) {
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resourceTypes := []string{
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"deployment",
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"pod",
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"namespace",
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}
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msg := "routes request must target a service"
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for _, input := range resourceTypes {
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_, err := BuildTopRoutesRequest(
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StatsRequestParams{
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ResourceType: input,
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},
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)
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if err == nil {
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t.Fatalf("BuildTopRoutesRequest(%s) unexpectedly succeeded, should have returned %s", input, msg)
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}
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if err.Error() != msg {
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t.Fatalf("BuildTopRoutesRequest(%s) should have returned: %s but got unexpected message: %s", input, msg, err)
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}
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}
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})
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t.Run("Rejects all-namespaces flag", func(t *testing.T) {
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msg := "all namespaces is not supported for routes request"
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_, err := BuildTopRoutesRequest(
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StatsRequestParams{
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ResourceType: k8s.Service,
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AllNamespaces: true,
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},
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)
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if err == nil {
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t.Fatalf("BuildTopRoutesRequest unexpectedly succeeded, should have returned %s", msg)
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}
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if err.Error() != msg {
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t.Fatalf("BuildTopRoutesRequest should have returned: %s but got unexpected message: %s", msg, err)
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}
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})
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}
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func TestBuildResource(t *testing.T) {
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type resourceExp struct {
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namespace string
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args []string
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resource pb.Resource
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}
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t.Run("Rejects duped resources", func(t *testing.T) {
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msg := "cannot supply duplicate resources"
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expectations := []resourceExp{
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resourceExp{
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namespace: "test-ns",
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args: []string{"foo", "foo"},
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},
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resourceExp{
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namespace: "test-ns",
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args: []string{"all", "all"},
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},
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}
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for _, exp := range expectations {
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_, err := BuildResources(exp.namespace, exp.args)
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if err == nil {
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t.Fatalf("BuildResource called with duped resources unexpectedly succeeded, should have returned %s", msg)
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}
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if err.Error() != msg {
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t.Fatalf("BuildResource called with duped resources should have returned: %s but got unexpected message: %s", msg, err)
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}
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}
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})
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t.Run("Ensures 'all' can't be supplied alongside other resources", func(t *testing.T) {
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msg := "'all' can't be supplied alongside other resources"
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expectations := []resourceExp{
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resourceExp{
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namespace: "test-ns",
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args: []string{"po", "foo", "all"},
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},
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resourceExp{
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namespace: "test-ns",
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args: []string{"foo", "all"},
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},
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resourceExp{
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namespace: "test-ns",
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args: []string{"all", "foo"},
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},
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}
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for _, exp := range expectations {
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_, err := BuildResources(exp.namespace, exp.args)
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if err == nil {
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t.Fatalf("BuildResource called with 'all' and another resource unexpectedly succeeded, should have returned %s", msg)
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}
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if err.Error() != msg {
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t.Fatalf("BuildResource called with 'all' and another resource should have returned: %s but got unexpected message: %s", msg, err)
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}
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}
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})
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t.Run("Correctly parses Kubernetes resources from the command line", func(t *testing.T) {
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expectations := []resourceExp{
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resourceExp{
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namespace: "test-ns",
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args: []string{"deployments"},
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resource: pb.Resource{
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Namespace: "test-ns",
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Type: k8s.Deployment,
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Name: "",
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},
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},
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resourceExp{
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namespace: "",
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args: []string{"deploy/foo"},
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resource: pb.Resource{
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Namespace: "",
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Type: k8s.Deployment,
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Name: "foo",
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},
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},
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resourceExp{
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namespace: "foo-ns",
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args: []string{"po", "foo"},
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resource: pb.Resource{
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Namespace: "foo-ns",
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Type: k8s.Pod,
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Name: "foo",
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},
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},
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resourceExp{
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namespace: "foo-ns",
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args: []string{"ns", "foo-ns2"},
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resource: pb.Resource{
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Namespace: "",
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Type: k8s.Namespace,
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Name: "foo-ns2",
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},
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},
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resourceExp{
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namespace: "foo-ns",
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args: []string{"ns/foo-ns2"},
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resource: pb.Resource{
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Namespace: "",
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Type: k8s.Namespace,
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Name: "foo-ns2",
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},
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},
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}
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for _, exp := range expectations {
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res, err := BuildResources(exp.namespace, exp.args)
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if err != nil {
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t.Fatalf("Unexpected error from BuildResources(%+v) => %s", exp, err)
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}
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if !reflect.DeepEqual(exp.resource, res[0]) {
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t.Fatalf("Expected resource to be [%+v] but was [%+v]", exp.resource, res[0])
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}
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}
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})
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}
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