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// Copyright 2015 Google Inc. All Rights Reserved.
//
// 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 gcs
import (
"errors"
"fmt"
"io"
"io/ioutil"
"strings"
"testing"
"testing/iotest"
"time"
"golang.org/x/net/context"
. "github.com/jacobsa/oglematchers"
. "github.com/jacobsa/oglemock"
. "github.com/jacobsa/ogletest"
)
func TestRetry(t *testing.T) { RunTests(t) }
////////////////////////////////////////////////////////////////////////
// Helpers
////////////////////////////////////////////////////////////////////////
func contentsAre(s string) Matcher {
pred := func(c interface{}) (err error) {
// Convert.
req, ok := c.(*CreateObjectRequest)
if !ok {
err = fmt.Errorf("which has type %T", c)
return
}
// Read.
contents, err := ioutil.ReadAll(req.Contents)
if err != nil {
err = fmt.Errorf("whose contents cannot be read: %v", err)
return
}
// Compare.
if string(contents) != s {
err = errors.New("whose contents don't match")
return
}
return
}
return NewMatcher(pred, "has the specified contents")
}
////////////////////////////////////////////////////////////////////////
// Boilerplate
////////////////////////////////////////////////////////////////////////
type retryBucketTest struct {
ctx context.Context
wrapped MockBucket
bucket Bucket
}
func (t *retryBucketTest) SetUp(ti *TestInfo) {
t.ctx = ti.Ctx
t.wrapped = NewMockBucket(ti.MockController, "wrapped")
t.bucket = newRetryBucket(time.Second, t.wrapped)
}
////////////////////////////////////////////////////////////////////////
// CreateObject
////////////////////////////////////////////////////////////////////////
type RetryBucket_CreateObjectTest struct {
retryBucketTest
req CreateObjectRequest
obj *Object
}
func init() { RegisterTestSuite(&RetryBucket_CreateObjectTest{}) }
func (t *RetryBucket_CreateObjectTest) call() (err error) {
t.obj, err = t.bucket.CreateObject(t.ctx, &t.req)
return
}
func (t *RetryBucket_CreateObjectTest) ErrorReading() {
var err error
// Pass in a reader that will return an error.
t.req.Contents = ioutil.NopCloser(
iotest.OneByteReader(
iotest.TimeoutReader(
strings.NewReader("foobar"))))
// Call
err = t.call()
ExpectThat(err, Error(HasSubstr("ReadAll")))
ExpectThat(err, Error(HasSubstr("timeout")))
}
func (t *RetryBucket_CreateObjectTest) CallsWrapped() {
const expected = "taco"
// Request
t.req.Contents = ioutil.NopCloser(strings.NewReader(expected))
// Wrapped
ExpectCall(t.wrapped, "CreateObject")(Any(), contentsAre(expected)).
WillOnce(Return(nil, errors.New("")))
// Call
t.call()
}
func (t *RetryBucket_CreateObjectTest) Successful() {
var err error
// Request
t.req.Contents = ioutil.NopCloser(strings.NewReader(""))
// Wrapped
expected := &Object{}
ExpectCall(t.wrapped, "CreateObject")(Any(), Any()).
WillOnce(Return(expected, nil))
// Call
err = t.call()
AssertEq(nil, err)
ExpectEq(expected, t.obj)
}
func (t *RetryBucket_CreateObjectTest) ShouldNotRetry() {
var err error
// Request
t.req.Contents = ioutil.NopCloser(strings.NewReader(""))
// Wrapped
expected := errors.New("taco")
ExpectCall(t.wrapped, "CreateObject")(Any(), Any()).
WillOnce(Return(nil, expected))
// Call
err = t.call()
ExpectTrue(errors.Is(err, expected))
}
func (t *RetryBucket_CreateObjectTest) CallsWrappedForRetry() {
const expected = "taco"
// Request
t.req.Contents = ioutil.NopCloser(strings.NewReader(expected))
// Wrapped
retryable := io.ErrUnexpectedEOF
ExpectCall(t.wrapped, "CreateObject")(Any(), contentsAre(expected)).
WillOnce(Return(nil, retryable)).
WillOnce(Return(nil, errors.New("")))
// Call
t.call()
}
func (t *RetryBucket_CreateObjectTest) RetrySuccessful() {
var err error
// Request
t.req.Contents = ioutil.NopCloser(strings.NewReader(""))
// Wrapped
retryable := io.ErrUnexpectedEOF
expected := &Object{}
ExpectCall(t.wrapped, "CreateObject")(Any(), Any()).
WillOnce(Return(nil, retryable)).
WillOnce(Return(expected, nil))
// Call
err = t.call()
AssertEq(nil, err)
ExpectEq(expected, t.obj)
}
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