github.com/docker/docker@v299999999.0.0-20200612211812-aaf470eca7b5+incompatible/testutil/registry/registry_mock.go (about)

     1  package registry // import "github.com/docker/docker/testutil/registry"
     2  
     3  import (
     4  	"net/http"
     5  	"net/http/httptest"
     6  	"regexp"
     7  	"strings"
     8  	"sync"
     9  	"testing"
    10  )
    11  
    12  type handlerFunc func(w http.ResponseWriter, r *http.Request)
    13  
    14  // Mock represent a registry mock
    15  type Mock struct {
    16  	server   *httptest.Server
    17  	hostport string
    18  	handlers map[string]handlerFunc
    19  	mu       sync.Mutex
    20  }
    21  
    22  // RegisterHandler register the specified handler for the registry mock
    23  func (tr *Mock) RegisterHandler(path string, h handlerFunc) {
    24  	tr.mu.Lock()
    25  	defer tr.mu.Unlock()
    26  	tr.handlers[path] = h
    27  }
    28  
    29  // NewMock creates a registry mock
    30  func NewMock(t testing.TB) (*Mock, error) {
    31  	t.Helper()
    32  	testReg := &Mock{handlers: make(map[string]handlerFunc)}
    33  
    34  	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
    35  		url := r.URL.String()
    36  
    37  		var matched bool
    38  		var err error
    39  		for re, function := range testReg.handlers {
    40  			matched, err = regexp.MatchString(re, url)
    41  			if err != nil {
    42  				t.Fatal("Error with handler regexp")
    43  			}
    44  			if matched {
    45  				function(w, r)
    46  				break
    47  			}
    48  		}
    49  
    50  		if !matched {
    51  			t.Fatalf("Unable to match %s with regexp", url)
    52  		}
    53  	}))
    54  
    55  	testReg.server = ts
    56  	testReg.hostport = strings.Replace(ts.URL, "http://", "", 1)
    57  	return testReg, nil
    58  }
    59  
    60  // URL returns the url of the registry
    61  func (tr *Mock) URL() string {
    62  	return tr.hostport
    63  }
    64  
    65  // Close closes mock and releases resources
    66  func (tr *Mock) Close() {
    67  	tr.server.Close()
    68  }