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// Copyright 2020 The Go Cloud Development Kit 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
//
// https://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 gcsblob
import (
"context"
"errors"
"testing"
gax "github.com/googleapis/gax-go/v2"
credentialspb "google.golang.org/genproto/googleapis/iam/credentials/v1"
)
const (
mockKey = "key0000"
mockSignature = "signature"
)
type mockIAMClient struct {
requestErr error
}
func (m mockIAMClient) SignBlob(context.Context, *credentialspb.SignBlobRequest, ...gax.CallOption) (*credentialspb.SignBlobResponse, error) {
if m.requestErr != nil {
return nil, m.requestErr
}
return &credentialspb.SignBlobResponse{KeyId: mockKey, SignedBlob: []byte(mockSignature)}, nil
}
func TestIAMCredentialsClient(t *testing.T) {
tests := []struct {
name string
connectErr error
mockClient interface {
SignBlob(context.Context, *credentialspb.SignBlobRequest, ...gax.CallOption) (*credentialspb.SignBlobResponse, error)
}
// These are for the produced SignBytesFunc
input []byte
wantOutput []byte
requestErr error
}{
{"happy path: signing", nil,
mockIAMClient{},
[]byte("payload"), []byte(mockSignature), nil,
},
{"won't connect", errors.New("Missing role: serviceAccountTokenCreator"),
mockIAMClient{},
[]byte("payload"), nil, nil,
},
{"request fails", nil,
mockIAMClient{requestErr: context.Canceled},
[]byte("payload"), nil, context.Canceled,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
c := credentialsClient{err: test.connectErr, client: test.mockClient}
makeSignBytesFn := c.CreateMakeSignBytesWith(nil, serviceAccountID)
signBytesFn := makeSignBytesFn(nil) // Our mocks don't read any context.
haveOutput, haveErr := signBytesFn(test.input)
if len(test.wantOutput) > 0 && string(haveOutput) != string(test.wantOutput) {
t.Errorf("Unexpected output:\n -- have: %v\n -- want: %v",
string(haveOutput), string(test.wantOutput))
return
}
if test.connectErr == nil && test.requestErr == nil {
return
}
if test.connectErr != nil && haveErr != test.connectErr {
t.Error("The connection error, a permanent error, has not been returned but should.")
}
if test.requestErr != nil && haveErr != test.requestErr {
t.Error("The per-request error has not been returned but should.")
}
})
}
}
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