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|
package dynamodb
import (
"context"
"github.com/aws/aws-sdk-go-v2/aws"
"github.com/aws/aws-sdk-go-v2/internal/awsutil"
"github.com/aws/aws-sdk-go-v2/service/dynamodb/types"
"testing"
)
type mockBatchGetItemClient struct {
inputs []*BatchGetItemInput
outputs []*BatchGetItemOutput
t *testing.T
}
func (c *mockBatchGetItemClient) BatchGetItem(ctx context.Context, input *BatchGetItemInput, optFns ...func(*Options)) (*BatchGetItemOutput, error) {
c.inputs = append(c.inputs, input)
requestCnt := len(c.inputs)
if len(c.outputs) < requestCnt {
c.t.Errorf("Paginator calls client more than expected %d times", len(c.outputs))
}
return c.outputs[requestCnt-1], nil
}
type batchGetItemTestCase struct {
requestCnt int
stopOnDuplicationToken bool
outputs []*BatchGetItemOutput
}
func TestBatchGetItemPaginator(t *testing.T) {
cases := map[string]batchGetItemTestCase{
"total count 3": {
requestCnt: 3,
outputs: []*BatchGetItemOutput{
{
UnprocessedKeys: map[string]types.KeysAndAttributes{
"key1": {
AttributesToGet: []string{
"attr1",
},
ConsistentRead: aws.Bool(true),
ProjectionExpression: aws.String("attr2, attr3"),
},
},
},
{
UnprocessedKeys: map[string]types.KeysAndAttributes{
"key2": {
AttributesToGet: []string{
"attr4",
},
ConsistentRead: aws.Bool(true),
ProjectionExpression: aws.String("attr5, attr6"),
},
},
},
{
UnprocessedKeys: map[string]types.KeysAndAttributes{},
},
},
},
"total count 2 due to duplicate token": {
requestCnt: 2,
stopOnDuplicationToken: true,
outputs: []*BatchGetItemOutput{
{
UnprocessedKeys: map[string]types.KeysAndAttributes{
"key1": {
AttributesToGet: []string{
"attr1",
},
ConsistentRead: aws.Bool(true),
ProjectionExpression: aws.String("attr2, attr3"),
},
},
},
{
UnprocessedKeys: map[string]types.KeysAndAttributes{
"key1": {
AttributesToGet: []string{
"attr1",
},
ConsistentRead: aws.Bool(true),
ProjectionExpression: aws.String("attr2, attr3"),
},
},
},
{
UnprocessedKeys: map[string]types.KeysAndAttributes{
"key2": {
AttributesToGet: []string{
"attr4",
},
ConsistentRead: aws.Bool(true),
ProjectionExpression: aws.String("attr5, attr6"),
},
},
},
},
},
}
for name, c := range cases {
t.Run(name, func(t *testing.T) {
client := mockBatchGetItemClient{
t: t,
outputs: c.outputs,
inputs: []*BatchGetItemInput{},
}
paginator := NewBatchGetItemPaginator(&client, &BatchGetItemInput{}, func(options *BatchGetItemPaginatorOptions) {
options.StopOnDuplicateToken = c.stopOnDuplicationToken
})
for paginator.HasMorePages() {
_, err := paginator.NextPage(context.TODO())
if err != nil {
t.Errorf("error: %v", err)
}
}
inputLen := len(client.inputs)
testTotalRequests(c.requestCnt, inputLen, t)
for i := 1; i < inputLen; i++ {
if !awsutil.DeepEqual(client.inputs[i].RequestItems, c.outputs[i-1].UnprocessedKeys) {
t.Errorf("Expect next input's request items to be eaqul to %v, got %v",
c.outputs[i-1].UnprocessedKeys, client.inputs[i].RequestItems)
}
}
})
}
}
func testTotalRequests(expect, actual int, t *testing.T) {
if actual != expect {
t.Errorf("Expect total request number to be %d, got %d", expect, actual)
}
}
|
