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client_test.go
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client_test.go
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package docker
import (
"bytes"
"context"
"encoding/binary"
"errors"
"io"
"testing"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/container"
"github.com/docker/docker/api/types/filters"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
"github.com/stretchr/testify/require"
)
type mockedProxy struct {
mock.Mock
DockerCLI
}
func (m *mockedProxy) ContainerList(context.Context, types.ContainerListOptions) ([]types.Container, error) {
args := m.Called()
containers, ok := args.Get(0).([]types.Container)
if !ok && args.Get(0) != nil {
panic("containers is not of type []types.Container")
}
return containers, args.Error(1)
}
func (m *mockedProxy) ContainerLogs(ctx context.Context, id string, options types.ContainerLogsOptions) (io.ReadCloser, error) {
args := m.Called(ctx, id, options)
reader, ok := args.Get(0).(io.ReadCloser)
if !ok && args.Get(0) != nil {
panic("reader is not of type io.ReadCloser")
}
return reader, args.Error(1)
}
func (m *mockedProxy) ContainerInspect(ctx context.Context, containerID string) (types.ContainerJSON, error) {
args := m.Called(ctx, containerID)
return args.Get(0).(types.ContainerJSON), args.Error(1)
}
func (m *mockedProxy) ContainerStats(ctx context.Context, containerID string, stream bool) (types.ContainerStats, error) {
return types.ContainerStats{}, nil
}
func Test_dockerClient_ListContainers_null(t *testing.T) {
proxy := new(mockedProxy)
proxy.On("ContainerList", mock.Anything, mock.Anything).Return(nil, nil)
client := &Client{proxy, filters.NewArgs(), &Host{ID: "localhost"}}
list, err := client.ListContainers()
assert.Empty(t, list, "list should be empty")
require.NoError(t, err, "error should not return an error.")
proxy.AssertExpectations(t)
}
func Test_dockerClient_ListContainers_error(t *testing.T) {
proxy := new(mockedProxy)
proxy.On("ContainerList", mock.Anything, mock.Anything).Return(nil, errors.New("test"))
client := &Client{proxy, filters.NewArgs(), &Host{ID: "localhost"}}
list, err := client.ListContainers()
assert.Nil(t, list, "list should be nil")
require.Error(t, err, "test.")
proxy.AssertExpectations(t)
}
func Test_dockerClient_ListContainers_happy(t *testing.T) {
containers := []types.Container{
{
ID: "abcdefghijklmnopqrst",
Names: []string{"/z_test_container"},
},
{
ID: "1234567890_abcxyzdef",
Names: []string{"/a_test_container"},
},
}
proxy := new(mockedProxy)
proxy.On("ContainerList", mock.Anything, mock.Anything).Return(containers, nil)
client := &Client{proxy, filters.NewArgs(), &Host{ID: "localhost"}}
list, err := client.ListContainers()
require.NoError(t, err, "error should not return an error.")
assert.Equal(t, list, []Container{
{
ID: "1234567890_a",
Name: "a_test_container",
Names: []string{"/a_test_container"},
Host: "localhost",
},
{
ID: "abcdefghijkl",
Name: "z_test_container",
Names: []string{"/z_test_container"},
Host: "localhost",
},
})
proxy.AssertExpectations(t)
}
func Test_dockerClient_ContainerLogs_happy(t *testing.T) {
id := "123456"
proxy := new(mockedProxy)
expected := "INFO Testing logs..."
b := make([]byte, 8)
binary.BigEndian.PutUint32(b[4:], uint32(len(expected)))
b = append(b, []byte(expected)...)
reader := io.NopCloser(bytes.NewReader(b))
options := types.ContainerLogsOptions{ShowStdout: true, ShowStderr: true, Follow: true, Tail: "300", Timestamps: true, Since: "since"}
proxy.On("ContainerLogs", mock.Anything, id, options).Return(reader, nil)
client := &Client{proxy, filters.NewArgs(), &Host{ID: "localhost"}}
logReader, _ := client.ContainerLogs(context.Background(), id, "since", STDALL)
actual, _ := io.ReadAll(logReader)
assert.Equal(t, string(b), string(actual), "message doesn't match expected")
proxy.AssertExpectations(t)
}
func Test_dockerClient_ContainerLogs_error(t *testing.T) {
id := "123456"
proxy := new(mockedProxy)
proxy.On("ContainerLogs", mock.Anything, id, mock.Anything).Return(nil, errors.New("test"))
client := &Client{proxy, filters.NewArgs(), &Host{ID: "localhost"}}
reader, err := client.ContainerLogs(context.Background(), id, "", STDALL)
assert.Nil(t, reader, "reader should be nil")
assert.Error(t, err, "error should have been returned")
proxy.AssertExpectations(t)
}
func Test_dockerClient_FindContainer_happy(t *testing.T) {
containers := []types.Container{
{
ID: "abcdefghijklmnopqrst",
Names: []string{"/z_test_container"},
},
{
ID: "1234567890_abcxyzdef",
Names: []string{"/a_test_container"},
},
}
proxy := new(mockedProxy)
proxy.On("ContainerList", mock.Anything, mock.Anything).Return(containers, nil)
json := types.ContainerJSON{Config: &container.Config{Tty: false}}
proxy.On("ContainerInspect", mock.Anything, "abcdefghijkl").Return(json, nil)
client := &Client{proxy, filters.NewArgs(), &Host{ID: "localhost"}}
container, err := client.FindContainer("abcdefghijkl")
require.NoError(t, err, "error should not be thrown")
assert.Equal(t, container, Container{
ID: "abcdefghijkl",
Name: "z_test_container",
Names: []string{"/z_test_container"},
Host: "localhost",
Tty: false,
})
proxy.AssertExpectations(t)
}
func Test_dockerClient_FindContainer_error(t *testing.T) {
containers := []types.Container{
{
ID: "abcdefghijklmnopqrst",
Names: []string{"/z_test_container"},
},
{
ID: "1234567890_abcxyzdef",
Names: []string{"/a_test_container"},
},
}
proxy := new(mockedProxy)
proxy.On("ContainerList", mock.Anything, mock.Anything).Return(containers, nil)
client := &Client{proxy, filters.NewArgs(), &Host{ID: "localhost"}}
_, err := client.FindContainer("not_valid")
require.Error(t, err, "error should be thrown")
proxy.AssertExpectations(t)
}