moby--moby/volume/drivers/proxy_test.go

package volumedrivers

import (
	"fmt"
	"net/http"
	"net/http/httptest"
	"net/url"
	"strings"
	"testing"

	"github.com/docker/docker/pkg/plugins"
)

func TestVolumeRequestError(t *testing.T) {
	mux := http.NewServeMux()
	server := httptest.NewServer(mux)
	defer server.Close()

	mux.HandleFunc("/VolumeDriver.Create", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
		fmt.Fprintln(w, `{"Err": "Cannot create volume"}`)
	})

	mux.HandleFunc("/VolumeDriver.Remove", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
		fmt.Fprintln(w, `{"Err": "Cannot remove volume"}`)
	})

	mux.HandleFunc("/VolumeDriver.Mount", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
		fmt.Fprintln(w, `{"Err": "Cannot mount volume"}`)
	})

	mux.HandleFunc("/VolumeDriver.Unmount", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
		fmt.Fprintln(w, `{"Err": "Cannot unmount volume"}`)
	})

	mux.HandleFunc("/VolumeDriver.Path", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
		fmt.Fprintln(w, `{"Err": "Unknown volume"}`)
	})

	u, _ := url.Parse(server.URL)
	client := plugins.NewClient("tcp://" + u.Host)
	driver := volumeDriverProxy{client}

	err := driver.Create("volume")
	if err == nil {
		t.Fatal("Expected error, was nil")
	}

	if !strings.Contains(err.Error(), "Cannot create volume") {
		t.Fatalf("Unexpected error: %v\n", err)
	}

	_, err = driver.Mount("volume")
	if err == nil {
		t.Fatal("Expected error, was nil")
	}

	if !strings.Contains(err.Error(), "Cannot mount volume") {
		t.Fatalf("Unexpected error: %v\n", err)
	}

	err = driver.Unmount("volume")
	if err == nil {
		t.Fatal("Expected error, was nil")
	}

	if !strings.Contains(err.Error(), "Cannot unmount volume") {
		t.Fatalf("Unexpected error: %v\n", err)
	}

	err = driver.Remove("volume")
	if err == nil {
		t.Fatal("Expected error, was nil")
	}

	if !strings.Contains(err.Error(), "Cannot remove volume") {
		t.Fatalf("Unexpected error: %v\n", err)
	}

	_, err = driver.Path("volume")
	if err == nil {
		t.Fatal("Expected error, was nil")
	}

	if !strings.Contains(err.Error(), "Unknown volume") {
		t.Fatalf("Unexpected error: %v\n", err)
	}
}