cadvisor/client/client_test.go
2014-07-08 12:49:40 -07:00

111 lines
3.1 KiB
Go

// Copyright 2014 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cadvisor
import (
"encoding/json"
"fmt"
"net/http"
"net/http/httptest"
"reflect"
"testing"
"time"
"github.com/google/cadvisor/info"
itest "github.com/google/cadvisor/info/test"
)
func testGetJsonData(
expected interface{},
f func() (interface{}, error),
) error {
reply, err := f()
if err != nil {
return fmt.Errorf("unable to retrieve data: %v", err)
}
if !reflect.DeepEqual(reply, expected) {
return fmt.Errorf("retrieved wrong data: %+v != %+v", reply, expected)
}
return nil
}
func cadvisorTestClient(path string, expectedPostObj, expectedPostObjEmpty, replyObj interface{}) (*Client, *httptest.Server, error) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path == path {
if expectedPostObj != nil {
decoder := json.NewDecoder(r.Body)
err := decoder.Decode(expectedPostObjEmpty)
if err != nil {
fmt.Fprintf(w, "received invalid json object: %v", err)
return
}
}
encoder := json.NewEncoder(w)
encoder.Encode(replyObj)
} else if r.URL.Path == "/api/v1.0/machine" {
fmt.Fprint(w, `{"num_cores":8,"memory_capacity":31625871360}`)
} else {
w.WriteHeader(http.StatusNotFound)
fmt.Fprintf(w, "Page not found.")
}
}))
client, err := NewClient(ts.URL)
if err != nil {
ts.Close()
return nil, nil, err
}
return client, ts, err
}
func TestGetMachineinfo(t *testing.T) {
minfo := &info.MachineInfo{
NumCores: 8,
MemoryCapacity: 31625871360,
}
client, server, err := cadvisorTestClient("/api/v1.0/machine", nil, nil, minfo)
if err != nil {
t.Fatalf("unable to get a client %v", err)
}
defer server.Close()
err = testGetJsonData(minfo, func() (interface{}, error) {
return client.MachineInfo()
})
if err != nil {
t.Fatal(err)
}
}
func TestGetContainerInfo(t *testing.T) {
query := &info.ContainerInfoQuery{
NumStats: 512,
NumSamples: 256,
CpuUsagePercentages: []int{10, 50, 90},
MemoryUsagePercentages: []int{10, 80, 90},
}
containerName := "/some/container"
cinfo := itest.GenerateRandomContainerInfo(containerName, 4, query, 1*time.Second)
client, server, err := cadvisorTestClient(fmt.Sprintf("/api/v1.0/containers%v", containerName), query, &info.ContainerInfoQuery{}, cinfo)
if err != nil {
t.Fatalf("unable to get a client %v", err)
}
defer server.Close()
err = testGetJsonData(cinfo, func() (interface{}, error) {
return client.ContainerInfo(containerName, nil)
})
if err != nil {
t.Fatal(err)
}
}