cli-utils/pkg/flowcontrol/flowcontrol_test.go

91 lines
2.0 KiB
Go

// Copyright 2022 The Kubernetes Authors.
// SPDX-License-Identifier: Apache-2.0
package flowcontrol
import (
"bytes"
"io"
"net/http"
"net/http/httptest"
"testing"
"time"
"context"
"github.com/stretchr/testify/assert"
flowcontrolapi "k8s.io/api/flowcontrol/v1beta2"
"k8s.io/client-go/rest"
"sigs.k8s.io/cli-utils/pkg/testutil"
)
func TestIsEnabled(t *testing.T) {
testCases := []struct {
name string
handler func(*http.Request) *http.Response
expectedEnabled bool
expectedError error
}{
{
name: "header found",
handler: func(req *http.Request) *http.Response {
defer req.Body.Close()
headers := http.Header{}
headers.Add(flowcontrolapi.ResponseHeaderMatchedFlowSchemaUID, "unused-uuid")
return &http.Response{
StatusCode: 200,
Header: headers,
Body: io.NopCloser(bytes.NewReader(nil)),
}
},
expectedEnabled: true,
},
{
name: "header not found",
handler: func(req *http.Request) *http.Response {
defer req.Body.Close()
return &http.Response{
StatusCode: 200,
Header: http.Header{},
Body: io.NopCloser(bytes.NewReader(nil)),
}
},
expectedEnabled: false,
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
handler := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
assert.Equal(t, "/livez/ping", req.URL.Path)
resp := tc.handler(req)
defer resp.Body.Close()
for k, vs := range resp.Header {
w.Header().Del(k)
for _, v := range vs {
w.Header().Add(k, v)
}
}
w.WriteHeader(resp.StatusCode)
_, err := io.Copy(w, resp.Body)
assert.NoError(t, err)
})
server := httptest.NewServer(handler)
defer server.Close()
cfg := &rest.Config{
Host: server.URL,
}
enabled, err := IsEnabled(ctx, cfg)
testutil.AssertEqual(t, tc.expectedError, err)
assert.Equal(t, tc.expectedEnabled, enabled)
})
}
}