github.com/vescale/zgraph@v0.0.0-20230410094002-959c02d50f95/meta/label_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 TestLabel(t *testing.T) {
    28  	assert := assert.New(t)
    29  	store, err := storage.Open(t.TempDir())
    30  	assert.Nil(err)
    31  
    32  	var graphID = int64(100)
    33  
    34  	err = kv.TxnContext(context.TODO(), store, func(_ context.Context, txn kv.Transaction) error {
    35  		meta := New(txn)
    36  		info := &model.GraphInfo{
    37  			ID:   graphID,
    38  			Name: model.NewCIStr("test-graph"),
    39  		}
    40  		return meta.CreateGraph(info)
    41  	})
    42  	assert.Nil(err)
    43  
    44  	labelNames := []string{
    45  		"label1",
    46  		"label2",
    47  		"label3",
    48  		"label4",
    49  		"label5",
    50  	}
    51  
    52  	// Create labels
    53  	for i, name := range labelNames {
    54  		err := kv.TxnContext(context.TODO(), store, func(_ context.Context, txn kv.Transaction) error {
    55  			meta := New(txn)
    56  			info := &model.LabelInfo{
    57  				ID:   int64(i) + 1,
    58  				Name: model.NewCIStr(name),
    59  			}
    60  			return meta.CreateLabel(graphID, info)
    61  		})
    62  		assert.Nil(err)
    63  	}
    64  
    65  	// List labels
    66  	err = kv.TxnContext(context.TODO(), store, func(_ context.Context, txn kv.Transaction) error {
    67  		meta := New(txn)
    68  		labels, err := meta.ListLabels(graphID)
    69  		assert.Nil(err)
    70  		names := make([]string, 0, len(labels))
    71  		ids := make([]int64, 0, len(labels))
    72  		for _, g := range labels {
    73  			names = append(names, g.Name.L)
    74  			ids = append(ids, g.ID)
    75  		}
    76  
    77  		assert.Equal(labelNames, names)
    78  		assert.Equal([]int64{1, 2, 3, 4, 5}, ids)
    79  
    80  		return nil
    81  	})
    82  	assert.Nil(err)
    83  
    84  	// Update label
    85  	err = kv.TxnContext(context.TODO(), store, func(_ context.Context, txn kv.Transaction) error {
    86  		meta := New(txn)
    87  		err := meta.UpdateLabel(graphID, &model.LabelInfo{
    88  			ID:   4,
    89  			Name: model.NewCIStr("LABEL4-modified"),
    90  		})
    91  		assert.Nil(err)
    92  		return nil
    93  	})
    94  	assert.Nil(err)
    95  
    96  	// Get label
    97  	err = kv.TxnContext(context.TODO(), store, func(_ context.Context, txn kv.Transaction) error {
    98  		meta := New(txn)
    99  		label, err := meta.GetLabel(graphID, 4)
   100  		assert.Nil(err)
   101  		assert.Equal(int64(4), label.ID)
   102  		assert.Equal("label4-modified", label.Name.L)
   103  		return nil
   104  	})
   105  	assert.Nil(err)
   106  
   107  	// Drop label
   108  	err = kv.TxnContext(context.TODO(), store, func(_ context.Context, txn kv.Transaction) error {
   109  		meta := New(txn)
   110  		err := meta.DropLabel(graphID, 3)
   111  		assert.Nil(err)
   112  		return nil
   113  	})
   114  	assert.Nil(err)
   115  
   116  	// List labels again
   117  	err = kv.TxnContext(context.TODO(), store, func(_ context.Context, txn kv.Transaction) error {
   118  		meta := New(txn)
   119  		labels, err := meta.ListLabels(graphID)
   120  		assert.Nil(err)
   121  		names := make([]string, 0, len(labels))
   122  		ids := make([]int64, 0, len(labels))
   123  		for _, g := range labels {
   124  			names = append(names, g.Name.L)
   125  			ids = append(ids, g.ID)
   126  		}
   127  
   128  		labelNames := []string{
   129  			"label1",
   130  			"label2",
   131  			"label4-modified",
   132  			"label5",
   133  		}
   134  		assert.Equal(labelNames, names)
   135  		assert.Equal([]int64{1, 2, 4, 5}, ids)
   136  
   137  		return nil
   138  	})
   139  	assert.Nil(err)
   140  }