test:add container_top test

client/container.go

@@ -6,7 +6,6 @@ import (
 	"io"
 	"net"
 	"net/url"
-	"strings"
 
 	"github.com/alibaba/pouch/apis/types"
 )
@@ -100,24 +99,6 @@ func (client *APIClient) ContainerUpgrade(ctx context.Context, name string, conf
 	return err
 }
 
-// ContainerTop shows process information from within a container.
-func (client *APIClient) ContainerTop(ctx context.Context, name string, arguments []string) (types.ContainerProcessList, error) {
-	response := types.ContainerProcessList{}
-	query := url.Values{}
-	if len(arguments) > 0 {
-		query.Set("ps_args", strings.Join(arguments, " "))
-	}
-
-	resp, err := client.get(ctx, "/containers/"+name+"/top", query, nil)
-	if err != nil {
-		return response, err
-	}
-
-	err = decodeBody(&response, resp.Body)
-	ensureCloseReader(resp)
-	return response, err
-}
-
 // ContainerLogs return the logs generated by a container in an io.ReadCloser.
 func (client *APIClient) ContainerLogs(ctx context.Context, name string, options types.ContainerLogsOptions) (io.ReadCloser, error) {
 	query := url.Values{}

client/container_top.go

@@ -0,0 +1,27 @@
+package client
+
+import (
+	"context"
+	"net/url"
+	"strings"
+
+	"github.com/alibaba/pouch/apis/types"
+)
+
+// ContainerTop shows process information from within a container.
+func (client *APIClient) ContainerTop(ctx context.Context, name string, arguments []string) (types.ContainerProcessList, error) {
+	response := types.ContainerProcessList{}
+	query := url.Values{}
+	if len(arguments) > 0 {
+		query.Set("ps_args", strings.Join(arguments, " "))
+	}
+
+	resp, err := client.get(ctx, "/containers/"+name+"/top", query, nil)
+	if err != nil {
+		return response, err
+	}
+
+	err = decodeBody(&response, resp.Body)
+	ensureCloseReader(resp)
+	return response, err
+}

client/container_top_test.go

@@ -0,0 +1,68 @@
+package client
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/alibaba/pouch/apis/types"
+)
+
+func TestContainerTopError(t *testing.T) {
+	client := &APIClient{
+		HTTPCli: newMockClient(errorMockResponse(http.StatusInternalServerError, "Server error")),
+	}
+	_, err := client.ContainerTop(context.Background(), "nothing", []string{})
+	if err == nil || !strings.Contains(err.Error(), "Server error") {
+		t.Fatalf("expected a Server Error, got %v", err)
+	}
+}
+
+func TestContainerTop(t *testing.T) {
+	expectedURL := "/containers/container_id/top"
+
+	httpClient := newMockClient(func(req *http.Request) (*http.Response, error) {
+		if !strings.HasPrefix(req.URL.Path, expectedURL) {
+			return nil, fmt.Errorf("expected URL '%s', got '%s'", expectedURL, req.URL)
+		}
+		query := req.URL.Query()
+		args := query.Get("ps_args")
+		if args != "arg1 arg2" {
+			return nil, fmt.Errorf("args not set in URL properly. Expected 'arg1 arg2', got %s", args)
+		}
+		psListJSON := types.ContainerProcessList{
+			Processes: [][]string{{"bar11", "bar12"}, {"bar21", "bar22"}},
+			Titles:    []string{"foo1", "foo2"},
+		}
+		b, err := json.Marshal(psListJSON)
+		if err != nil {
+			return nil, err
+		}
+		return &http.Response{
+			StatusCode: http.StatusOK,
+			Body:       ioutil.NopCloser(bytes.NewReader([]byte(b))),
+		}, nil
+	})
+	client := &APIClient{
+		HTTPCli: httpClient,
+	}
+	psList, err := client.ContainerTop(context.Background(), "container_id", []string{"arg1", "arg2"})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if len(psList.Titles) != 2 {
+		t.Fatalf("expected 2 titles, got %v", len(psList.Titles))
+	}
+	for _, ps := range psList.Processes {
+		if len(ps) != len(psList.Titles) {
+			t.Fatalf("expected 2 values, got %v", len(ps))
+			break
+		}
+	}
+}