Update vendor files to point to kubernetes-1.12.0-beta.1

vendor/k8s.io/client-go/rest/token_source_test.go

@@ -0,0 +1,156 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+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 rest
+
+import (
+	"fmt"
+	"reflect"
+	"sync"
+	"testing"
+	"time"
+
+	"golang.org/x/oauth2"
+)
+
+type testTokenSource struct {
+	calls int
+	tok   *oauth2.Token
+	err   error
+}
+
+func (ts *testTokenSource) Token() (*oauth2.Token, error) {
+	ts.calls++
+	return ts.tok, ts.err
+}
+
+func TestCachingTokenSource(t *testing.T) {
+	start := time.Now()
+	tokA := &oauth2.Token{
+		AccessToken: "a",
+		Expiry:      start.Add(10 * time.Minute),
+	}
+	tokB := &oauth2.Token{
+		AccessToken: "b",
+		Expiry:      start.Add(20 * time.Minute),
+	}
+	tests := []struct {
+		name string
+
+		tok   *oauth2.Token
+		tsTok *oauth2.Token
+		tsErr error
+		wait  time.Duration
+
+		wantTok     *oauth2.Token
+		wantErr     bool
+		wantTSCalls int
+	}{
+		{
+			name:    "valid token returned from cache",
+			tok:     tokA,
+			wantTok: tokA,
+		},
+		{
+			name:    "valid token returned from cache 1 minute before scheduled refresh",
+			tok:     tokA,
+			wait:    8 * time.Minute,
+			wantTok: tokA,
+		},
+		{
+			name:        "new token created when cache is empty",
+			tsTok:       tokA,
+			wantTok:     tokA,
+			wantTSCalls: 1,
+		},
+		{
+			name:        "new token created 1 minute after scheduled refresh",
+			tok:         tokA,
+			tsTok:       tokB,
+			wait:        10 * time.Minute,
+			wantTok:     tokB,
+			wantTSCalls: 1,
+		},
+		{
+			name:        "error on create token returns error",
+			tsErr:       fmt.Errorf("error"),
+			wantErr:     true,
+			wantTSCalls: 1,
+		},
+	}
+	for _, c := range tests {
+		t.Run(c.name, func(t *testing.T) {
+			tts := &testTokenSource{
+				tok: c.tsTok,
+				err: c.tsErr,
+			}
+
+			ts := &cachingTokenSource{
+				base:   tts,
+				tok:    c.tok,
+				leeway: 1 * time.Minute,
+				now:    func() time.Time { return start.Add(c.wait) },
+			}
+
+			gotTok, gotErr := ts.Token()
+			if got, want := gotTok, c.wantTok; !reflect.DeepEqual(got, want) {
+				t.Errorf("unexpected token:\n\tgot:\t%#v\n\twant:\t%#v", got, want)
+			}
+			if got, want := tts.calls, c.wantTSCalls; got != want {
+				t.Errorf("unexpected number of Token() calls: got %d, want %d", got, want)
+			}
+			if gotErr == nil && c.wantErr {
+				t.Errorf("wanted error but got none")
+			}
+			if gotErr != nil && !c.wantErr {
+				t.Errorf("unexpected error: %v", gotErr)
+			}
+		})
+	}
+}
+
+func TestCachingTokenSourceRace(t *testing.T) {
+	for i := 0; i < 100; i++ {
+		tts := &testTokenSource{
+			tok: &oauth2.Token{
+				AccessToken: "a",
+				Expiry:      time.Now().Add(1000 * time.Hour),
+			},
+		}
+
+		ts := &cachingTokenSource{
+			now:    time.Now,
+			base:   tts,
+			leeway: 1 * time.Minute,
+		}
+
+		var wg sync.WaitGroup
+		wg.Add(100)
+
+		for i := 0; i < 100; i++ {
+			go func() {
+				defer wg.Done()
+				if _, err := ts.Token(); err != nil {
+					t.Fatalf("err: %v", err)
+				}
+			}()
+		}
+		wg.Wait()
+		if tts.calls != 1 {
+			t.Errorf("expected one call to Token() but saw: %d", tts.calls)
+		}
+	}
+}