client_test.go

Documentation: github.com/chaos-mesh/chaos-mesh/pkg/chaosdaemon/crclients/containerd

     1  // Copyright 2021 Chaos Mesh Authors.
     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  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package containerd
    15  
    16  import (
    17  	"context"
    18  	"errors"
    19  	"fmt"
    20  
    21  	. "github.com/onsi/ginkgo"
    22  	. "github.com/onsi/gomega"
    23  
    24  	"github.com/chaos-mesh/chaos-mesh/pkg/chaosdaemon/crclients/test"
    25  	"github.com/chaos-mesh/chaos-mesh/pkg/mock"
    26  )
    27  
    28  var _ = Describe("containerd client", func() {
    29  	Context("ContainerdClient GetPidFromContainerID", func() {
    30  		It("should return the magic number 9527", func() {
    31  			defer func() {
    32  				err := mock.With("pid", int(9527))()
    33  				Expect(err).To(BeNil())
    34  			}()
    35  
    36  			m := &test.MockClient{}
    37  			c := ContainerdClient{client: m}
    38  			pid, err := c.GetPidFromContainerID(context.TODO(), "containerd://valid-container-id")
    39  			Expect(err).To(BeNil())
    40  			Expect(pid).To(Equal(uint32(9527)))
    41  		})
    42  
    43  		It("should error with wrong protocol", func() {
    44  			m := &test.MockClient{}
    45  			c := ContainerdClient{client: m}
    46  			_, err := c.GetPidFromContainerID(context.TODO(), "docker://this-is-a-wrong-protocol")
    47  			Expect(err).NotTo(BeNil())
    48  			Expect(fmt.Sprintf("%s", err)).To(ContainSubstring(fmt.Sprintf("expected %s but got", containerdProtocolPrefix)))
    49  		})
    50  
    51  		It("should error with specified string", func() {
    52  			errorStr := "this is a mocked error"
    53  			mock.With("LoadContainerError", errors.New(errorStr))
    54  			m := &test.MockClient{}
    55  			c := ContainerdClient{client: m}
    56  			_, err := c.GetPidFromContainerID(context.TODO(), "containerd://valid-container-id")
    57  			Expect(err).NotTo(BeNil())
    58  			Expect(fmt.Sprintf("%s", err)).To(Equal(errorStr))
    59  			err = mock.Reset("LoadContainerError")
    60  			Expect(err).NotTo(BeNil())
    61  
    62  			mock.With("TaskError", errors.New(errorStr))
    63  			m = &test.MockClient{}
    64  			c = ContainerdClient{client: m}
    65  			_, err = c.GetPidFromContainerID(context.TODO(), "containerd://valid-container-id")
    66  			Expect(err).NotTo(BeNil())
    67  			Expect(fmt.Sprintf("%s", err)).To(Equal(errorStr))
    68  			err = mock.Reset("TaskError")
    69  			Expect(err).NotTo(BeNil())
    70  		})
    71  	})
    72  
    73  	Context("ContainerdClient ContainerKillByContainerID", func() {
    74  		It("should work", func() {
    75  			m := &test.MockClient{}
    76  			c := ContainerdClient{client: m}
    77  			err := c.ContainerKillByContainerID(context.TODO(), "containerd://valid-container-id")
    78  			Expect(err).To(BeNil())
    79  		})
    80  
    81  		errorPoints := []string{"LoadContainer", "Task", "Kill"}
    82  		for _, e := range errorPoints {
    83  			It(fmt.Sprintf("should error on %s", e), func() {
    84  				errorStr := fmt.Sprintf("this is a mocked error on %s", e)
    85  				m := &test.MockClient{}
    86  				c := ContainerdClient{client: m}
    87  				defer mock.With(e+"Error", errors.New(errorStr))()
    88  				err := c.ContainerKillByContainerID(context.TODO(), "containerd://valid-container-id")
    89  				Expect(err).ToNot(BeNil())
    90  				Expect(fmt.Sprintf("%s", err)).To(Equal(errorStr))
    91  			})
    92  		}
    93  
    94  		It("should error on wrong protocol", func() {
    95  			m := &test.MockClient{}
    96  			c := ContainerdClient{client: m}
    97  			err := c.ContainerKillByContainerID(context.TODO(), "docker://this-is-a-wrong-protocol")
    98  			Expect(err).ToNot(BeNil())
    99  			Expect(fmt.Sprintf("%s", err)).To(ContainSubstring(fmt.Sprintf("expected %s but got", containerdProtocolPrefix)))
   100  		})
   101  
   102  		It("should error on short protocol", func() {
   103  			m := &test.MockClient{}
   104  			c := ContainerdClient{client: m}
   105  			err := c.ContainerKillByContainerID(context.TODO(), "dock:")
   106  			Expect(err).ToNot(BeNil())
   107  			Expect(fmt.Sprintf("%s", err)).To(ContainSubstring("is not a containerd container id"))
   108  		})
   109  	})
   110  })
   111