github.com/cayleygraph/cayley@v0.7.7/graph/iterator/hasa_test.go (about)

     1  // Copyright 2014 The Cayley Authors. All rights reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package iterator_test
    16  
    17  import (
    18  	"context"
    19  	"errors"
    20  	"testing"
    21  
    22  	. "github.com/cayleygraph/cayley/graph/iterator"
    23  	"github.com/cayleygraph/quad"
    24  	"github.com/stretchr/testify/require"
    25  )
    26  
    27  func TestHasAIteratorErr(t *testing.T) {
    28  	wantErr := errors.New("unique")
    29  	ctx := context.TODO()
    30  	errIt := newTestIterator(false, wantErr)
    31  
    32  	// TODO(andrew-d): pass a non-nil quadstore
    33  	hasa := NewHasA(nil, errIt, quad.Subject)
    34  
    35  	require.False(t, hasa.Next(ctx), "HasA iterator did not pass through initial 'false'")
    36  	require.Equal(t, wantErr, hasa.Err(), "HasA iterator did not pass through underlying Err")
    37  }