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impersonate_test.go
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impersonate_test.go
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// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package impersonate
import (
"bytes"
"context"
"encoding/json"
"io/ioutil"
"net/http"
"strings"
"testing"
"time"
"google.golang.org/api/option"
)
func TestTokenSource_serviceAccount(t *testing.T) {
ctx := context.Background()
tests := []struct {
name string
targetPrincipal string
scopes []string
lifetime time.Duration
wantErr bool
}{
{
name: "missing targetPrincipal",
wantErr: true,
},
{
name: "missing scopes",
targetPrincipal: "[email protected]",
wantErr: true,
},
{
name: "lifetime over max",
targetPrincipal: "[email protected]",
scopes: []string{"scope"},
lifetime: 3601 * time.Second,
wantErr: true,
},
{
name: "works",
targetPrincipal: "[email protected]",
scopes: []string{"scope"},
wantErr: false,
},
}
for _, tt := range tests {
name := tt.name
t.Run(name, func(t *testing.T) {
saTok := "sa-token"
client := &http.Client{
Transport: RoundTripFn(func(req *http.Request) *http.Response {
if strings.Contains(req.URL.Path, "generateAccessToken") {
resp := generateAccessTokenResp{
AccessToken: saTok,
ExpireTime: time.Now().Format(time.RFC3339),
}
b, err := json.Marshal(&resp)
if err != nil {
t.Fatalf("unable to marshal response: %v", err)
}
return &http.Response{
StatusCode: 200,
Body: ioutil.NopCloser(bytes.NewReader(b)),
Header: http.Header{},
}
}
return nil
}),
}
ts, err := CredentialsTokenSource(ctx, CredentialsConfig{
TargetPrincipal: tt.targetPrincipal,
Scopes: tt.scopes,
Lifetime: tt.lifetime,
}, option.WithHTTPClient(client))
if tt.wantErr && err != nil {
return
}
if err != nil {
t.Fatal(err)
}
tok, err := ts.Token()
if err != nil {
t.Fatal(err)
}
if tok.AccessToken != saTok {
t.Fatalf("got %q, want %q", tok.AccessToken, saTok)
}
})
}
}
type RoundTripFn func(req *http.Request) *http.Response
func (f RoundTripFn) RoundTrip(req *http.Request) (*http.Response, error) { return f(req), nil }