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Copy pathstat_test.go
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237 lines (208 loc) · 7 KB
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package cmd
import (
"testing"
pkgcmd "github.com/linkerd/linkerd2/pkg/cmd"
"github.com/linkerd/linkerd2/pkg/k8s"
api "github.com/linkerd/linkerd2/viz/metrics-api"
)
type paramsExp struct {
counts *api.PodCounts
options *statOptions
resNs []string
file string
}
func TestStat(t *testing.T) {
options := newStatOptions()
t.Run("Returns namespace stats", func(t *testing.T) {
testStatCall(paramsExp{
counts: &api.PodCounts{
MeshedPods: 1,
RunningPods: 2,
FailedPods: 0,
},
options: options,
resNs: []string{"emojivoto1"},
file: "stat_one_output.golden",
}, k8s.Namespace, t)
})
t.Run("Returns pod stats", func(t *testing.T) {
testStatCall(paramsExp{
counts: &api.PodCounts{
Status: "Running",
MeshedPods: 1,
RunningPods: 1,
FailedPods: 0,
},
options: options,
resNs: []string{"emojivoto1"},
file: "stat_one_pod_output.golden",
}, k8s.Pod, t)
})
options.outputFormat = jsonOutput
t.Run("Returns namespace stats (json)", func(t *testing.T) {
testStatCall(paramsExp{
counts: &api.PodCounts{
MeshedPods: 1,
RunningPods: 2,
FailedPods: 0,
},
options: options,
resNs: []string{"emojivoto1"},
file: "stat_one_output_json.golden",
}, k8s.Namespace, t)
})
options = newStatOptions()
options.allNamespaces = true
t.Run("Returns all namespace stats", func(t *testing.T) {
testStatCall(paramsExp{
counts: &api.PodCounts{
MeshedPods: 1,
RunningPods: 2,
FailedPods: 0,
},
options: options,
resNs: []string{"emojivoto1", "emojivoto2"},
file: "stat_all_output.golden",
}, k8s.Namespace, t)
})
options.outputFormat = jsonOutput
t.Run("Returns all namespace stats (json)", func(t *testing.T) {
testStatCall(paramsExp{
counts: &api.PodCounts{
MeshedPods: 1,
RunningPods: 2,
FailedPods: 0,
},
options: options,
resNs: []string{"emojivoto1", "emojivoto2"},
file: "stat_all_output_json.golden",
}, k8s.Namespace, t)
})
options = newStatOptions()
options.outputFormat = "wide"
t.Run("Returns TCP stats", func(t *testing.T) {
testStatCall(paramsExp{
counts: &api.PodCounts{
MeshedPods: 1,
RunningPods: 2,
FailedPods: 0,
},
options: options,
resNs: []string{"emojivoto1"},
file: "stat_one_tcp_output.golden",
}, k8s.Namespace, t)
})
t.Run("Returns an error for named resource queries with the --all-namespaces flag", func(t *testing.T) {
options := newStatOptions()
options.allNamespaces = true
if options.namespace == "" {
options.namespace = pkgcmd.GetDefaultNamespace(kubeconfigPath, kubeContext)
}
args := []string{"po", "web"}
expectedError := "stats for a resource cannot be retrieved by name across all namespaces"
_, err := buildStatSummaryRequests(args, options)
if err == nil || err.Error() != expectedError {
t.Fatalf("Expected error [%s] instead got [%s]", expectedError, err)
}
})
t.Run("Rejects commands with both --to and --from flags", func(t *testing.T) {
options := newStatOptions()
if options.namespace == "" {
options.namespace = pkgcmd.GetDefaultNamespace(kubeconfigPath, kubeContext)
}
options.toResource = "deploy/foo"
options.fromResource = "deploy/bar"
args := []string{"ns", "test"}
expectedError := "--to and --from flags are mutually exclusive"
_, err := buildStatSummaryRequests(args, options)
if err == nil || err.Error() != expectedError {
t.Fatalf("Expected error [%s] instead got [%s]", expectedError, err)
}
})
t.Run("Rejects commands with both --to-namespace and --from-namespace flags", func(t *testing.T) {
options := newStatOptions()
if options.namespace == "" {
options.namespace = pkgcmd.GetDefaultNamespace(kubeconfigPath, kubeContext)
}
options.toNamespace = "foo"
options.fromNamespace = "bar"
args := []string{"po"}
expectedError := "--to-namespace and --from-namespace flags are mutually exclusive"
_, err := buildStatSummaryRequests(args, options)
if err == nil || err.Error() != expectedError {
t.Fatalf("Expected error [%s] instead got [%s]", expectedError, err)
}
})
t.Run("Rejects commands with both --all-namespaces and --namespace flags", func(t *testing.T) {
options := newStatOptions()
if options.namespace == "" {
options.namespace = pkgcmd.GetDefaultNamespace(kubeconfigPath, kubeContext)
}
options.allNamespaces = true
options.namespace = "ns"
args := []string{"po"}
expectedError := "--all-namespaces and --namespace flags are mutually exclusive"
_, err := buildStatSummaryRequests(args, options)
if err == nil || err.Error() != expectedError {
t.Fatalf("Expected error [%s] instead got [%s]", expectedError, err)
}
})
t.Run("Rejects --to-namespace flag when the target is a namespace", func(t *testing.T) {
options := newStatOptions()
if options.namespace == "" {
options.namespace = pkgcmd.GetDefaultNamespace(kubeconfigPath, kubeContext)
}
options.toNamespace = "bar"
args := []string{"ns", "foo"}
expectedError := "--to-namespace flag is incompatible with namespace resource type"
_, err := buildStatSummaryRequests(args, options)
if err == nil || err.Error() != expectedError {
t.Fatalf("Expected error [%s] instead got [%s]", expectedError, err)
}
})
t.Run("Rejects --from-namespace flag when the target is a namespace", func(t *testing.T) {
options := newStatOptions()
if options.namespace == "" {
options.namespace = pkgcmd.GetDefaultNamespace(kubeconfigPath, kubeContext)
}
options.fromNamespace = "foo"
args := []string{"ns/bar"}
expectedError := "--from-namespace flag is incompatible with namespace resource type"
_, err := buildStatSummaryRequests(args, options)
if err == nil || err.Error() != expectedError {
t.Fatalf("Expected error [%s] instead got [%s]", expectedError, err)
}
})
t.Run("Returns an error if --time-window is not more than 15s", func(t *testing.T) {
options := newStatOptions()
if options.namespace == "" {
options.namespace = pkgcmd.GetDefaultNamespace(kubeconfigPath, kubeContext)
}
options.timeWindow = "10s"
args := []string{"ns/bar"}
expectedError := "metrics time window needs to be at least 15s"
_, err := buildStatSummaryRequests(args, options)
if err == nil || err.Error() != expectedError {
t.Fatalf("Expected error [%s] instead got [%s]", expectedError, err)
}
})
}
func testStatCall(exp paramsExp, resourceType string, t *testing.T) {
mockClient := &api.MockAPIClient{}
response := api.GenStatSummaryResponse("emoji", resourceType, exp.resNs, exp.counts, true, true)
mockClient.StatSummaryResponseToReturn = response
if exp.options.namespace == "" {
exp.options.namespace = pkgcmd.GetDefaultNamespace(kubeconfigPath, kubeContext)
}
reqs, err := buildStatSummaryRequests([]string{"ns"}, exp.options)
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
resp, err := requestStatsFromAPI(mockClient, reqs[0])
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
rows := respToRows(resp)
output := renderStatStats(rows, exp.options)
testDataDiffer.DiffTestdata(t, exp.file, output)
}