// Use DynamoDB methods for simplicity func TestPaginationEachPage(t *testing.T) { db := dynamodb.New(unit.Session) 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) }
// Use DynamoDB methods for simplicity func TestPaginationEarlyExit(t *testing.T) { db := dynamodb.New(unit.Session) 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) }
// Use DynamoDB methods for simplicity func TestPaginationQueryPage(t *testing.T) { db := dynamodb.New(unit.Session) tokens, pages, numPages, gotToEnd := []map[string]*dynamodb.AttributeValue{}, []map[string]*dynamodb.AttributeValue{}, 0, false reqNum := 0 resps := []*dynamodb.QueryOutput{ { LastEvaluatedKey: map[string]*dynamodb.AttributeValue{"key": {S: aws.String("key1")}}, Count: aws.Int64(1), Items: []map[string]*dynamodb.AttributeValue{ { "key": {S: aws.String("key1")}, }, }, }, { LastEvaluatedKey: map[string]*dynamodb.AttributeValue{"key": {S: aws.String("key2")}}, Count: aws.Int64(1), Items: []map[string]*dynamodb.AttributeValue{ { "key": {S: aws.String("key2")}, }, }, }, { LastEvaluatedKey: map[string]*dynamodb.AttributeValue{}, Count: aws.Int64(1), Items: []map[string]*dynamodb.AttributeValue{ { "key": {S: aws.String("key3")}, }, }, }, } 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.QueryInput) if in == nil { tokens = append(tokens, nil) } else if len(in.ExclusiveStartKey) != 0 { tokens = append(tokens, in.ExclusiveStartKey) } }) db.Handlers.Unmarshal.PushBack(func(r *request.Request) { r.Data = resps[reqNum] reqNum++ }) params := &dynamodb.QueryInput{ Limit: aws.Int64(2), TableName: aws.String("tablename"), } err := db.QueryPages(params, func(p *dynamodb.QueryOutput, last bool) bool { numPages++ for _, item := range p.Items { pages = append(pages, item) } if last { if gotToEnd { assert.Fail(t, "last=true happened twice") } gotToEnd = true } return true }) assert.Nil(t, err) assert.Equal(t, []map[string]*dynamodb.AttributeValue{ {"key": {S: aws.String("key1")}}, {"key": {S: aws.String("key2")}}, }, tokens) assert.Equal(t, []map[string]*dynamodb.AttributeValue{ {"key": {S: aws.String("key1")}}, {"key": {S: aws.String("key2")}}, {"key": {S: aws.String("key3")}}, }, pages) assert.Equal(t, 3, numPages) assert.True(t, gotToEnd) assert.Nil(t, params.ExclusiveStartKey) }
{TableNames: []*string{aws.String("TABLE"), aws.String("NXT")}, LastEvaluatedTableName: aws.String("NXT")}, {TableNames: []*string{aws.String("TABLE"), aws.String("NXT")}, LastEvaluatedTableName: aws.String("NXT")}, {TableNames: []*string{aws.String("TABLE"), aws.String("NXT")}, LastEvaluatedTableName: aws.String("NXT")}, {TableNames: []*string{aws.String("TABLE"), aws.String("NXT")}, LastEvaluatedTableName: aws.String("NXT")}, {TableNames: []*string{aws.String("TABLE"), aws.String("NXT")}, LastEvaluatedTableName: aws.String("NXT")}, {TableNames: []*string{aws.String("TABLE"), aws.String("NXT")}, LastEvaluatedTableName: aws.String("NXT")}, {TableNames: []*string{aws.String("TABLE"), aws.String("NXT")}, LastEvaluatedTableName: aws.String("NXT")}, {TableNames: []*string{aws.String("TABLE"), aws.String("NXT")}, LastEvaluatedTableName: aws.String("NXT")}, {TableNames: []*string{aws.String("TABLE"), aws.String("NXT")}, LastEvaluatedTableName: aws.String("NXT")}, {TableNames: []*string{aws.String("TABLE"), aws.String("NXT")}, LastEvaluatedTableName: aws.String("NXT")}, {TableNames: []*string{aws.String("TABLE"), aws.String("NXT")}, LastEvaluatedTableName: aws.String("NXT")}, {TableNames: []*string{aws.String("TABLE")}}, } var benchDb = func() *dynamodb.DynamoDB { db := dynamodb.New(unit.Session) db.Handlers.Send.Clear() // mock sending db.Handlers.Unmarshal.Clear() db.Handlers.UnmarshalMeta.Clear() db.Handlers.ValidateResponse.Clear() return db } func BenchmarkCodegenIterator(b *testing.B) { reqNum := 0 db := benchDb() db.Handlers.Unmarshal.PushBack(func(r *request.Request) { r.Data = benchResps[reqNum] reqNum++ })