// Use DynamoDB methods for simplicity
func TestPaginationEachPage(t *testing.T) {
db := dynamodb.New(nil)
tokens, pages, numPages, gotToEnd := []string{}, []string{}, 0, false
reqNum := 0
resps := []*dynamodb.ListTablesOutput{
{TableNames: []*string{aws.String("Table1"), aws.String("Table2")}, LastEvaluatedTableName: aws.String("Table2")},
{TableNames: []*string{aws.String("Table3"), aws.String("Table4")}, LastEvaluatedTableName: aws.String("Table4")},
{TableNames: []*string{aws.String("Table5")}},
}
db.Handlers.Send.Clear() // mock sending
db.Handlers.Unmarshal.Clear()
db.Handlers.UnmarshalMeta.Clear()
db.Handlers.ValidateResponse.Clear()
db.Handlers.Build.PushBack(func(r *request.Request) {
in := r.Params.(*dynamodb.ListTablesInput)
if in == nil {
tokens = append(tokens, "")
} else if in.ExclusiveStartTableName != nil {
tokens = append(tokens, *in.ExclusiveStartTableName)
}
})
db.Handlers.Unmarshal.PushBack(func(r *request.Request) {
r.Data = resps[reqNum]
reqNum++
})
params := &dynamodb.ListTablesInput{Limit: aws.Int64(2)}
req, _ := db.ListTablesRequest(params)
err := req.EachPage(func(p interface{}, last bool) bool {
numPages++
for _, t := range p.(*dynamodb.ListTablesOutput).TableNames {
pages = append(pages, *t)
}
if last {
if gotToEnd {
assert.Fail(t, "last=true happened twice")
}
gotToEnd = true
}
return true
})
assert.Equal(t, []string{"Table2", "Table4"}, tokens)
assert.Equal(t, []string{"Table1", "Table2", "Table3", "Table4", "Table5"}, pages)
assert.Equal(t, 3, numPages)
assert.True(t, gotToEnd)
assert.Nil(t, err)
}
func TestRequestExhaustRetries(t *testing.T) {
delays := []time.Duration{}
sleepDelay := func(delay time.Duration) {
delays = append(delays, delay)
}
reqNum := 0
reqs := []http.Response{
{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
}
s := service.New(aws.NewConfig().WithMaxRetries(aws.DefaultRetries).WithSleepDelay(sleepDelay))
s.Handlers.Validate.Clear()
s.Handlers.Unmarshal.PushBack(unmarshal)
s.Handlers.UnmarshalError.PushBack(unmarshalError)
s.Handlers.Send.Clear() // mock sending
s.Handlers.Send.PushBack(func(r *request.Request) {
r.HTTPResponse = &reqs[reqNum]
reqNum++
})
r := s.NewRequest(&request.Operation{Name: "Operation"}, nil, nil)
err := r.Send()
assert.NotNil(t, err)
if e, ok := err.(awserr.RequestFailure); ok {
assert.Equal(t, 500, e.StatusCode())
} else {
assert.Fail(t, "Expected error to be a service failure")
}
assert.Equal(t, "UnknownError", err.(awserr.Error).Code())
assert.Equal(t, "An error occurred.", err.(awserr.Error).Message())
assert.Equal(t, 3, int(r.RetryCount))
expectDelays := []struct{ min, max time.Duration }{{30, 59}, {60, 118}, {120, 236}}
for i, v := range delays {
min := expectDelays[i].min * time.Millisecond
max := expectDelays[i].max * time.Millisecond
assert.True(t, min <= v && v <= max,
"Expect delay to be within range, i:%d, v:%s, min:%s, max:%s", i, v, min, max)
}
}
// Use DynamoDB methods for simplicity
func TestPaginationEarlyExit(t *testing.T) {
db := dynamodb.New(nil)
numPages, gotToEnd := 0, false
reqNum := 0
resps := []*dynamodb.ListTablesOutput{
{TableNames: []*string{aws.String("Table1"), aws.String("Table2")}, LastEvaluatedTableName: aws.String("Table2")},
{TableNames: []*string{aws.String("Table3"), aws.String("Table4")}, LastEvaluatedTableName: aws.String("Table4")},
{TableNames: []*string{aws.String("Table5")}},
}
db.Handlers.Send.Clear() // mock sending
db.Handlers.Unmarshal.Clear()
db.Handlers.UnmarshalMeta.Clear()
db.Handlers.ValidateResponse.Clear()
db.Handlers.Unmarshal.PushBack(func(r *request.Request) {
r.Data = resps[reqNum]
reqNum++
})
params := &dynamodb.ListTablesInput{Limit: aws.Int64(2)}
err := db.ListTablesPages(params, func(p *dynamodb.ListTablesOutput, last bool) bool {
numPages++
if numPages == 2 {
return false
}
if last {
if gotToEnd {
assert.Fail(t, "last=true happened twice")
}
gotToEnd = true
}
return true
})
assert.Equal(t, 2, numPages)
assert.False(t, gotToEnd)
assert.Nil(t, err)
}
// test that retries don't occur for 4xx status codes with a response type that can't be retried
func TestRequest4xxUnretryable(t *testing.T) {
s := NewService(&Config{MaxRetries: 10})
s.Handlers.Validate.Clear()
s.Handlers.Unmarshal.PushBack(unmarshal)
s.Handlers.UnmarshalError.PushBack(unmarshalError)
s.Handlers.Send.Clear() // mock sending
s.Handlers.Send.PushBack(func(r *Request) {
r.HTTPResponse = &http.Response{StatusCode: 401, Body: body(`{"__type":"SignatureDoesNotMatch","message":"Signature does not match."}`)}
})
out := &testData{}
r := NewRequest(s, &Operation{Name: "Operation"}, nil, out)
err := r.Send()
assert.NotNil(t, err)
if e, ok := err.(awserr.RequestFailure); ok {
assert.Equal(t, 401, e.StatusCode())
} else {
assert.Fail(t, "Expected error to be a service failure")
}
assert.Equal(t, "SignatureDoesNotMatch", err.(awserr.Error).Code())
assert.Equal(t, "Signature does not match.", err.(awserr.Error).Message())
assert.Equal(t, 0, int(r.RetryCount))
}
func TestRequestExhaustRetries(t *testing.T) {
delays := []time.Duration{}
sleepDelay = func(delay time.Duration) {
delays = append(delays, delay)
}
reqNum := 0
reqs := []http.Response{
http.Response{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
http.Response{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
http.Response{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
http.Response{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
}
s := NewService(&Config{MaxRetries: -1})
s.Handlers.Validate.Clear()
s.Handlers.Unmarshal.PushBack(unmarshal)
s.Handlers.UnmarshalError.PushBack(unmarshalError)
s.Handlers.Send.Clear() // mock sending
s.Handlers.Send.PushBack(func(r *Request) {
r.HTTPResponse = &reqs[reqNum]
reqNum++
})
r := NewRequest(s, &Operation{Name: "Operation"}, nil, nil)
err := r.Send()
assert.NotNil(t, err)
if e, ok := err.(awserr.RequestFailure); ok {
assert.Equal(t, 500, e.StatusCode())
} else {
assert.Fail(t, "Expected error to be a service failure")
}
assert.Equal(t, "UnknownError", err.(awserr.Error).Code())
assert.Equal(t, "An error occurred.", err.(awserr.Error).Message())
assert.Equal(t, 3, int(r.RetryCount))
assert.True(t, reflect.DeepEqual([]time.Duration{30 * time.Millisecond, 60 * time.Millisecond, 120 * time.Millisecond}, delays))
}