github.com/vescale/zgraph@v0.0.0-20230410094002-959c02d50f95/meta/graph_test.go (about)

     1  // Copyright 2022 zGraph 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 meta
    16  
    17  import (
    18  	"context"
    19  	"testing"
    20  
    21  	"github.com/stretchr/testify/assert"
    22  	"github.com/vescale/zgraph/parser/model"
    23  	"github.com/vescale/zgraph/storage"
    24  	"github.com/vescale/zgraph/storage/kv"
    25  )
    26  
    27  func TestGraph(t *testing.T) {
    28  	assert := assert.New(t)
    29  	store, err := storage.Open(t.TempDir())
    30  	assert.Nil(err)
    31  
    32  	graphNames := []string{
    33  		"graph1",
    34  		"graph2",
    35  		"graph3",
    36  		"graph4",
    37  		"graph5",
    38  	}
    39  
    40  	// Create graphs
    41  	for i, name := range graphNames {
    42  		err := kv.TxnContext(context.TODO(), store, func(_ context.Context, txn kv.Transaction) error {
    43  			meta := New(txn)
    44  			info := &model.GraphInfo{
    45  				ID:   int64(i) + 1,
    46  				Name: model.NewCIStr(name),
    47  			}
    48  			return meta.CreateGraph(info)
    49  		})
    50  		assert.Nil(err)
    51  	}
    52  
    53  	// List graphs
    54  	err = kv.TxnContext(context.TODO(), store, func(_ context.Context, txn kv.Transaction) error {
    55  		meta := New(txn)
    56  		graphs, err := meta.ListGraphs()
    57  		assert.Nil(err)
    58  		names := make([]string, 0, len(graphs))
    59  		ids := make([]int64, 0, len(graphs))
    60  		for _, g := range graphs {
    61  			names = append(names, g.Name.L)
    62  			ids = append(ids, g.ID)
    63  		}
    64  
    65  		assert.Equal(graphNames, names)
    66  		assert.Equal([]int64{1, 2, 3, 4, 5}, ids)
    67  
    68  		return nil
    69  	})
    70  	assert.Nil(err)
    71  
    72  	// Update graph
    73  	err = kv.TxnContext(context.TODO(), store, func(_ context.Context, txn kv.Transaction) error {
    74  		meta := New(txn)
    75  		err := meta.UpdateGraph(&model.GraphInfo{
    76  			ID:   4,
    77  			Name: model.NewCIStr("GRAPH4-modified"),
    78  		})
    79  		assert.Nil(err)
    80  		return nil
    81  	})
    82  	assert.Nil(err)
    83  
    84  	// Get graph
    85  	err = kv.TxnContext(context.TODO(), store, func(_ context.Context, txn kv.Transaction) error {
    86  		meta := New(txn)
    87  		graph, err := meta.GetGraph(4)
    88  		assert.Nil(err)
    89  		assert.Equal(int64(4), graph.ID)
    90  		assert.Equal("graph4-modified", graph.Name.L)
    91  		return nil
    92  	})
    93  	assert.Nil(err)
    94  
    95  	// Drop graph
    96  	err = kv.TxnContext(context.TODO(), store, func(_ context.Context, txn kv.Transaction) error {
    97  		meta := New(txn)
    98  		err := meta.DropGraph(3)
    99  		assert.Nil(err)
   100  		return nil
   101  	})
   102  	assert.Nil(err)
   103  
   104  	// List graphs again
   105  	err = kv.TxnContext(context.TODO(), store, func(_ context.Context, txn kv.Transaction) error {
   106  		meta := New(txn)
   107  		graphs, err := meta.ListGraphs()
   108  		assert.Nil(err)
   109  		names := make([]string, 0, len(graphs))
   110  		ids := make([]int64, 0, len(graphs))
   111  		for _, g := range graphs {
   112  			names = append(names, g.Name.L)
   113  			ids = append(ids, g.ID)
   114  		}
   115  
   116  		graphNames := []string{
   117  			"graph1",
   118  			"graph2",
   119  			"graph4-modified",
   120  			"graph5",
   121  		}
   122  		assert.Equal(graphNames, names)
   123  		assert.Equal([]int64{1, 2, 4, 5}, ids)
   124  
   125  		return nil
   126  	})
   127  	assert.Nil(err)
   128  }