github.com/1aal/kubeblocks@v0.0.0-20231107070852-e1c03e598921/pkg/controller/model/parallel_transformer_test.go (about)

     1  /*
     2  Copyright (C) 2022-2023 ApeCloud Co., Ltd
     3  
     4  This file is part of KubeBlocks project
     5  
     6  This program is free software: you can redistribute it and/or modify
     7  it under the terms of the GNU Affero General Public License as published by
     8  the Free Software Foundation, either version 3 of the License, or
     9  (at your option) any later version.
    10  
    11  This program is distributed in the hope that it will be useful
    12  but WITHOUT ANY WARRANTY; without even the implied warranty of
    13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    14  GNU Affero General Public License for more details.
    15  
    16  You should have received a copy of the GNU Affero General Public License
    17  along with this program.  If not, see <http://www.gnu.org/licenses/>.
    18  */
    19  
    20  package model
    21  
    22  import (
    23  	. "github.com/onsi/ginkgo/v2"
    24  	. "github.com/onsi/gomega"
    25  
    26  	"github.com/1aal/kubeblocks/pkg/controller/graph"
    27  )
    28  
    29  var _ = Describe("parallel transformer test", func() {
    30  	Context("Transform function", func() {
    31  		It("should work well", func() {
    32  			id1 := 1
    33  			transformer := &ParallelTransformer{
    34  				Transformers: []graph.Transformer{
    35  					&testTransformer{id: id1},
    36  				},
    37  			}
    38  			dag := graph.NewDAG()
    39  			// TODO(free6om): DAG is not thread-safe currently, so parallel transformer has concurrent map writes issue.
    40  			// parallel more transformers when DAG is ready.
    41  			Expect(transformer.Transform(nil, dag)).Should(Succeed())
    42  			dagExpected := graph.NewDAG()
    43  			dagExpected.AddVertex(id1)
    44  			Expect(dag.Equals(dagExpected, DefaultLess)).Should(BeTrue())
    45  		})
    46  	})
    47  })
    48  
    49  type testTransformer struct {
    50  	id int
    51  }
    52  
    53  var _ graph.Transformer = &testTransformer{}
    54  
    55  func (t *testTransformer) Transform(ctx graph.TransformContext, dag *graph.DAG) error {
    56  	dag.AddVertex(t.id)
    57  	return nil
    58  }