hasa_test.go
// Copyright 2014 The Cayley Authors. All rights reserved.
//
// 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.
package graph_test
import (
"context"
"errors"
"testing"
"github.com/stretchr/testify/require"
"github.com/cayleygraph/cayley/graph"
"github.com/cayleygraph/cayley/graph/iterator"
"github.com/cayleygraph/quad"
)
func TestHasAIteratorErr(t *testing.T) {
wantErr := errors.New("unique")
ctx := context.TODO()
errIt := iterator.NewError(wantErr)
// TODO(andrew-d): pass a non-nil quadstore
hasa := graph.NewHasA(nil, errIt, quad.Subject).Iterate()
require.False(t, hasa.Next(ctx), "HasA iterator did not pass through initial 'false'")
require.Equal(t, wantErr, hasa.Err(), "HasA iterator did not pass through underlying Err")
}