client/plugin_inspect_test.go
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 package client
 
 import (
 	"bytes"
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
 	"net/http"
 	"strings"
 	"testing"
 
 	"github.com/docker/docker/api/types"
 	"golang.org/x/net/context"
 )
 
 func TestPluginInspectError(t *testing.T) {
 	client := &Client{
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 		client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")),
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 	}
 
 	_, _, err := client.PluginInspectWithRaw(context.Background(), "nothing")
 	if err == nil || err.Error() != "Error response from daemon: Server error" {
 		t.Fatalf("expected a Server Error, got %v", err)
 	}
 }
 
 func TestPluginInspect(t *testing.T) {
 	expectedURL := "/plugins/plugin_name"
 	client := &Client{
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 		client: newMockClient(func(req *http.Request) (*http.Response, error) {
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 			if !strings.HasPrefix(req.URL.Path, expectedURL) {
 				return nil, fmt.Errorf("Expected URL '%s', got '%s'", expectedURL, req.URL)
 			}
 			content, err := json.Marshal(types.Plugin{
 				ID: "plugin_id",
 			})
 			if err != nil {
 				return nil, err
 			}
 			return &http.Response{
 				StatusCode: http.StatusOK,
 				Body:       ioutil.NopCloser(bytes.NewReader(content)),
 			}, nil
 		}),
 	}
 
 	pluginInspect, _, err := client.PluginInspectWithRaw(context.Background(), "plugin_name")
 	if err != nil {
 		t.Fatal(err)
 	}
 	if pluginInspect.ID != "plugin_id" {
 		t.Fatalf("expected `plugin_id`, got %s", pluginInspect.ID)
 	}
 }