// Copyright 2017 Pilosa Corp.
//
// 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.

//+build integration

package csv_test

import (
	"io"
	"reflect"
	"strings"
	"testing"

	"github.com/molecula/featurebase/v2/client"
	"github.com/molecula/featurebase/v2/client/csv"
)

func TestCSVIterate(t *testing.T) {
	text := `10,7
		10,5
		2,3
		7,1`
	iterator := csv.NewColumnIterator(csv.RowIDColumnID, strings.NewReader(text))
	recs := consumeIterator(t, iterator)
	target := []client.Record{
		client.Column{RowID: 10, ColumnID: 7},
		client.Column{RowID: 10, ColumnID: 5},
		client.Column{RowID: 2, ColumnID: 3},
		client.Column{RowID: 7, ColumnID: 1},
	}
	if !reflect.DeepEqual(target, recs) {
		t.Fatalf("%v != %v", target, recs)
	}
}

func consumeIterator(t *testing.T, it *csv.Iterator) []client.Record {
	recs := []client.Record{}
	for {
		r, err := it.NextRecord()
		if err == io.EOF {
			break
		}
		if err != nil {
			t.Fatal(err)
		}
		recs = append(recs, r)
	}
	return recs
}