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package dynamodb_test
import (
"bytes"
"io/ioutil"
"net/http"
"os"
"testing"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/client"
"github.com/aws/aws-sdk-go/aws/request"
"github.com/aws/aws-sdk-go/awstesting/unit"
"github.com/aws/aws-sdk-go/service/dynamodb"
)
var db *dynamodb.DynamoDB
func TestMain(m *testing.M) {
db = dynamodb.New(unit.Session, &aws.Config{
MaxRetries: aws.Int(2),
})
db.Handlers.Send.Clear() // mock sending
os.Exit(m.Run())
}
func mockCRCResponse(svc *dynamodb.DynamoDB, status int, body, crc string) (req *request.Request) {
header := http.Header{}
header.Set("x-amz-crc32", crc)
req, _ = svc.ListTablesRequest(nil)
req.Handlers.Build.RemoveByName("crr.endpointdiscovery")
req.Handlers.Send.PushBack(func(*request.Request) {
req.HTTPResponse = &http.Response{
ContentLength: int64(len(body)),
StatusCode: status,
Body: ioutil.NopCloser(bytes.NewReader([]byte(body))),
Header: header,
}
})
req.Send()
return
}
func TestDefaultRetryRules(t *testing.T) {
d := dynamodb.New(unit.Session, &aws.Config{MaxRetries: aws.Int(-1)})
if e, a := 10, d.MaxRetries(); e != a {
t.Errorf("expect %d max retries, got %d", e, a)
}
}
func TestCustomRetryRules(t *testing.T) {
d := dynamodb.New(unit.Session, &aws.Config{MaxRetries: aws.Int(2)})
if e, a := 2, d.MaxRetries(); e != a {
t.Errorf("expect %d max retries, got %d", e, a)
}
}
type testCustomRetryer struct {
client.DefaultRetryer
}
func TestCustomRetry_FromConfig(t *testing.T) {
d := dynamodb.New(unit.Session, &aws.Config{
Retryer: testCustomRetryer{client.DefaultRetryer{NumMaxRetries: 9}},
})
if _, ok := d.Retryer.(testCustomRetryer); !ok {
t.Errorf("expect retryer to be testCustomRetryer, but got %T", d.Retryer)
}
if e, a := 9, d.MaxRetries(); e != a {
t.Errorf("expect %d max retries from custom retryer, got %d", e, a)
}
}
func TestValidateCRC32NoHeaderSkip(t *testing.T) {
req := mockCRCResponse(db, 200, "{}", "")
if req.Error != nil {
t.Errorf("expect no error, got %v", req.Error)
}
}
func TestValidateCRC32InvalidHeaderSkip(t *testing.T) {
req := mockCRCResponse(db, 200, "{}", "ABC")
if req.Error != nil {
t.Errorf("expect no error, got %v", req.Error)
}
}
func TestValidateCRC32AlreadyErrorSkip(t *testing.T) {
req := mockCRCResponse(db, 400, "{}", "1234")
if req.Error == nil {
t.Fatalf("expect error, but got none")
}
aerr := req.Error.(awserr.Error)
if aerr.Code() == "CRC32CheckFailed" {
t.Errorf("expect error code not to be CRC32CheckFailed")
}
}
func TestValidateCRC32IsValid(t *testing.T) {
req := mockCRCResponse(db, 200, `{"TableNames":["A"]}`, "3090163698")
if req.Error != nil {
t.Fatalf("expect no error, got %v", req.Error)
}
// CRC check does not affect output parsing
out := req.Data.(*dynamodb.ListTablesOutput)
if e, a := "A", *out.TableNames[0]; e != a {
t.Errorf("expect %q table name, got %q", e, a)
}
}
func TestValidateCRC32DoesNotMatch(t *testing.T) {
req := mockCRCResponse(db, 200, "{}", "1234")
if req.Error == nil {
t.Fatalf("expect error, but got none")
}
req.Handlers.Build.RemoveByName("crr.endpointdiscovery")
aerr := req.Error.(awserr.Error)
if e, a := "CRC32CheckFailed", aerr.Code(); e != a {
t.Errorf("expect %s error code, got %s", e, a)
}
if e, a := 2, req.RetryCount; e != a {
t.Errorf("expect %d retry count, got %d", e, a)
}
}
func TestValidateCRC32DoesNotMatchNoComputeChecksum(t *testing.T) {
svc := dynamodb.New(unit.Session, &aws.Config{
MaxRetries: aws.Int(2),
DisableComputeChecksums: aws.Bool(true),
})
svc.Handlers.Send.Clear() // mock sending
req := mockCRCResponse(svc, 200, `{"TableNames":["A"]}`, "1234")
if req.Error != nil {
t.Fatalf("expect no error, got %v", req.Error)
}
if e, a := 0, req.RetryCount; e != a {
t.Errorf("expect %d retry count, got %d", e, a)
}
// CRC check disabled. Does not affect output parsing
out := req.Data.(*dynamodb.ListTablesOutput)
if e, a := "A", *out.TableNames[0]; e != a {
t.Errorf("expect %q table name, got %q", e, a)
}
}
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