Restructure project
We previously didn't really had any structure in our project apart from creating a new folder for each package in our project root. Now that we have accumulated some packages, we use the well-known Golang project layout in order to clearly communicate our intent with packages. See https://github.com/golang-standards/project-layout
This commit is contained in:
490
internal/api/websocket_test.go
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490
internal/api/websocket_test.go
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@ -0,0 +1,490 @@
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package api
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import (
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"bufio"
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"context"
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"crypto/tls"
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"encoding/json"
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"fmt"
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"github.com/gorilla/mux"
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"github.com/gorilla/websocket"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/mock"
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"github.com/stretchr/testify/require"
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"github.com/stretchr/testify/suite"
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"gitlab.hpi.de/codeocean/codemoon/poseidon/internal/nomad"
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"gitlab.hpi.de/codeocean/codemoon/poseidon/internal/runner"
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"gitlab.hpi.de/codeocean/codemoon/poseidon/pkg/dto"
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"gitlab.hpi.de/codeocean/codemoon/poseidon/tests"
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"gitlab.hpi.de/codeocean/codemoon/poseidon/tests/helpers"
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"io"
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"net/http"
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"net/http/httptest"
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"net/url"
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"strings"
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"testing"
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"time"
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)
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func TestWebSocketTestSuite(t *testing.T) {
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suite.Run(t, new(WebSocketTestSuite))
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}
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type WebSocketTestSuite struct {
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suite.Suite
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router *mux.Router
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executionID runner.ExecutionID
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runner runner.Runner
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apiMock *nomad.ExecutorAPIMock
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server *httptest.Server
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}
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func (s *WebSocketTestSuite) SetupTest() {
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runnerID := "runner-id"
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s.runner, s.apiMock = newNomadAllocationWithMockedAPIClient(runnerID)
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// default execution
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s.executionID = "execution-id"
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s.runner.Add(s.executionID, &executionRequestHead)
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mockAPIExecuteHead(s.apiMock)
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runnerManager := &runner.ManagerMock{}
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runnerManager.On("Get", s.runner.ID()).Return(s.runner, nil)
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s.router = NewRouter(runnerManager, nil)
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s.server = httptest.NewServer(s.router)
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}
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func (s *WebSocketTestSuite) TearDownTest() {
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s.server.Close()
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}
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func (s *WebSocketTestSuite) TestWebsocketConnectionCanBeEstablished() {
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wsURL, err := s.webSocketURL("ws", s.runner.ID(), s.executionID)
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s.Require().NoError(err)
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_, _, err = websocket.DefaultDialer.Dial(wsURL.String(), nil)
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s.Require().NoError(err)
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}
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func (s *WebSocketTestSuite) TestWebsocketReturns404IfExecutionDoesNotExist() {
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wsURL, err := s.webSocketURL("ws", s.runner.ID(), "invalid-execution-id")
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s.Require().NoError(err)
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_, response, err := websocket.DefaultDialer.Dial(wsURL.String(), nil)
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s.Require().ErrorIs(err, websocket.ErrBadHandshake)
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s.Equal(http.StatusNotFound, response.StatusCode)
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}
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func (s *WebSocketTestSuite) TestWebsocketReturns400IfRequestedViaHttp() {
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wsURL, err := s.webSocketURL("http", s.runner.ID(), s.executionID)
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s.Require().NoError(err)
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response, err := http.Get(wsURL.String())
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s.Require().NoError(err)
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// This functionality is implemented by the WebSocket library.
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s.Equal(http.StatusBadRequest, response.StatusCode)
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}
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func (s *WebSocketTestSuite) TestWebsocketConnection() {
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wsURL, err := s.webSocketURL("ws", s.runner.ID(), s.executionID)
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s.Require().NoError(err)
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connection, _, err := websocket.DefaultDialer.Dial(wsURL.String(), nil)
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s.Require().NoError(err)
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err = connection.SetReadDeadline(time.Now().Add(5 * time.Second))
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s.Require().NoError(err)
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s.Run("Receives start message", func() {
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message, err := helpers.ReceiveNextWebSocketMessage(connection)
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s.Require().NoError(err)
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s.Equal(dto.WebSocketMetaStart, message.Type)
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})
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s.Run("Executes the request in the runner", func() {
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<-time.After(100 * time.Millisecond)
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s.apiMock.AssertCalled(s.T(), "ExecuteCommand",
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mock.Anything, mock.Anything, mock.Anything, mock.Anything, mock.Anything, mock.Anything, mock.Anything)
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})
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s.Run("Can send input", func() {
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err = connection.WriteMessage(websocket.TextMessage, []byte("Hello World\n"))
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s.Require().NoError(err)
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})
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messages, err := helpers.ReceiveAllWebSocketMessages(connection)
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s.Require().Error(err)
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s.True(websocket.IsCloseError(err, websocket.CloseNormalClosure))
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s.Run("Receives output message", func() {
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stdout, _, _ := helpers.WebSocketOutputMessages(messages)
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s.Equal("Hello World", stdout)
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})
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s.Run("Receives exit message", func() {
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controlMessages := helpers.WebSocketControlMessages(messages)
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s.Require().Equal(1, len(controlMessages))
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s.Equal(dto.WebSocketExit, controlMessages[0].Type)
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})
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}
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func (s *WebSocketTestSuite) TestCancelWebSocketConnection() {
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executionID := runner.ExecutionID("sleeping-execution")
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s.runner.Add(executionID, &executionRequestSleep)
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canceled := mockAPIExecuteSleep(s.apiMock)
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wsURL, err := webSocketURL("ws", s.server, s.router, s.runner.ID(), executionID)
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s.Require().NoError(err)
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connection, _, err := websocket.DefaultDialer.Dial(wsURL.String(), nil)
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s.Require().NoError(err)
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message, err := helpers.ReceiveNextWebSocketMessage(connection)
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s.Require().NoError(err)
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s.Equal(dto.WebSocketMetaStart, message.Type)
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select {
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case <-canceled:
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s.Fail("ExecuteInteractively canceled unexpected")
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default:
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}
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err = connection.WriteControl(websocket.CloseMessage,
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websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""), time.Now().Add(time.Second))
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s.Require().NoError(err)
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select {
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case <-canceled:
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case <-time.After(time.Second):
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s.Fail("ExecuteInteractively not canceled")
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}
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}
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func (s *WebSocketTestSuite) TestWebSocketConnectionTimeout() {
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executionID := runner.ExecutionID("time-out-execution")
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limitExecution := executionRequestSleep
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limitExecution.TimeLimit = 2
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s.runner.Add(executionID, &limitExecution)
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canceled := mockAPIExecuteSleep(s.apiMock)
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wsURL, err := webSocketURL("ws", s.server, s.router, s.runner.ID(), executionID)
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s.Require().NoError(err)
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connection, _, err := websocket.DefaultDialer.Dial(wsURL.String(), nil)
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s.Require().NoError(err)
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message, err := helpers.ReceiveNextWebSocketMessage(connection)
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s.Require().NoError(err)
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s.Equal(dto.WebSocketMetaStart, message.Type)
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select {
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case <-canceled:
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s.Fail("ExecuteInteractively canceled unexpected")
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case <-time.After(time.Duration(limitExecution.TimeLimit-1) * time.Second):
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<-time.After(time.Second)
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}
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select {
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case <-canceled:
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case <-time.After(time.Second):
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s.Fail("ExecuteInteractively not canceled")
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}
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message, err = helpers.ReceiveNextWebSocketMessage(connection)
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s.Require().NoError(err)
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s.Equal(dto.WebSocketMetaTimeout, message.Type)
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}
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func (s *WebSocketTestSuite) TestWebsocketStdoutAndStderr() {
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executionID := runner.ExecutionID("ls-execution")
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s.runner.Add(executionID, &executionRequestLs)
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mockAPIExecuteLs(s.apiMock)
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wsURL, err := webSocketURL("ws", s.server, s.router, s.runner.ID(), executionID)
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s.Require().NoError(err)
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connection, _, err := websocket.DefaultDialer.Dial(wsURL.String(), nil)
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s.Require().NoError(err)
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messages, err := helpers.ReceiveAllWebSocketMessages(connection)
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s.Require().Error(err)
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s.True(websocket.IsCloseError(err, websocket.CloseNormalClosure))
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stdout, stderr, _ := helpers.WebSocketOutputMessages(messages)
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s.Contains(stdout, "existing-file")
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s.Contains(stderr, "non-existing-file")
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}
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func (s *WebSocketTestSuite) TestWebsocketError() {
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executionID := runner.ExecutionID("error-execution")
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s.runner.Add(executionID, &executionRequestError)
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mockAPIExecuteError(s.apiMock)
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wsURL, err := webSocketURL("ws", s.server, s.router, s.runner.ID(), executionID)
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s.Require().NoError(err)
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connection, _, err := websocket.DefaultDialer.Dial(wsURL.String(), nil)
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s.Require().NoError(err)
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messages, err := helpers.ReceiveAllWebSocketMessages(connection)
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s.Require().Error(err)
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s.True(websocket.IsCloseError(err, websocket.CloseNormalClosure))
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_, _, errMessages := helpers.WebSocketOutputMessages(messages)
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s.Equal(1, len(errMessages))
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s.Equal("Error executing the request", errMessages[0])
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}
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func (s *WebSocketTestSuite) TestWebsocketNonZeroExit() {
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executionID := runner.ExecutionID("exit-execution")
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s.runner.Add(executionID, &executionRequestExitNonZero)
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mockAPIExecuteExitNonZero(s.apiMock)
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wsURL, err := webSocketURL("ws", s.server, s.router, s.runner.ID(), executionID)
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s.Require().NoError(err)
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connection, _, err := websocket.DefaultDialer.Dial(wsURL.String(), nil)
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s.Require().NoError(err)
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messages, err := helpers.ReceiveAllWebSocketMessages(connection)
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s.Require().Error(err)
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s.True(websocket.IsCloseError(err, websocket.CloseNormalClosure))
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controlMessages := helpers.WebSocketControlMessages(messages)
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s.Equal(2, len(controlMessages))
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s.Equal(&dto.WebSocketMessage{Type: dto.WebSocketExit, ExitCode: 42}, controlMessages[1])
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}
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func TestWebsocketTLS(t *testing.T) {
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runnerID := "runner-id"
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r, apiMock := newNomadAllocationWithMockedAPIClient(runnerID)
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executionID := runner.ExecutionID("execution-id")
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r.Add(executionID, &executionRequestLs)
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mockAPIExecuteLs(apiMock)
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runnerManager := &runner.ManagerMock{}
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runnerManager.On("Get", r.ID()).Return(r, nil)
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router := NewRouter(runnerManager, nil)
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server, err := helpers.StartTLSServer(t, router)
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require.NoError(t, err)
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defer server.Close()
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wsURL, err := webSocketURL("wss", server, router, runnerID, executionID)
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require.NoError(t, err)
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config := &tls.Config{RootCAs: nil, InsecureSkipVerify: true} //nolint:gosec // test needs self-signed cert
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d := websocket.Dialer{TLSClientConfig: config}
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connection, _, err := d.Dial(wsURL.String(), nil)
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require.NoError(t, err)
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message, err := helpers.ReceiveNextWebSocketMessage(connection)
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require.NoError(t, err)
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assert.Equal(t, dto.WebSocketMetaStart, message.Type)
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_, err = helpers.ReceiveAllWebSocketMessages(connection)
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require.Error(t, err)
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assert.True(t, websocket.IsCloseError(err, websocket.CloseNormalClosure))
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}
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func TestRawToCodeOceanWriter(t *testing.T) {
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testMessage := "test"
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var message []byte
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connectionMock := &webSocketConnectionMock{}
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connectionMock.On("WriteMessage", mock.AnythingOfType("int"), mock.AnythingOfType("[]uint8")).
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Run(func(args mock.Arguments) {
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var ok bool
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message, ok = args.Get(1).([]byte)
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require.True(t, ok)
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}).
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Return(nil)
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connectionMock.On("CloseHandler").Return(nil)
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connectionMock.On("SetCloseHandler", mock.Anything).Return()
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proxy, err := newWebSocketProxy(connectionMock)
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require.NoError(t, err)
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writer := &rawToCodeOceanWriter{
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proxy: proxy,
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outputType: dto.WebSocketOutputStdout,
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}
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_, err = writer.Write([]byte(testMessage))
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require.NoError(t, err)
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expected, err := json.Marshal(struct {
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Type string `json:"type"`
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Data string `json:"data"`
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}{string(dto.WebSocketOutputStdout), testMessage})
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require.NoError(t, err)
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assert.Equal(t, expected, message)
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}
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func TestCodeOceanToRawReaderReturnsOnlyAfterOneByteWasRead(t *testing.T) {
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reader := newCodeOceanToRawReader(nil)
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read := make(chan bool)
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go func() {
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//nolint:makezero // we can't make zero initial length here as the reader otherwise doesn't block
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p := make([]byte, 10)
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_, err := reader.Read(p)
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require.NoError(t, err)
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read <- true
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}()
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t.Run("Does not return immediately when there is no data", func(t *testing.T) {
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assert.False(t, tests.ChannelReceivesSomething(read, tests.ShortTimeout))
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})
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t.Run("Returns when there is data available", func(t *testing.T) {
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reader.buffer <- byte(42)
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assert.True(t, tests.ChannelReceivesSomething(read, tests.ShortTimeout))
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})
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}
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func TestCodeOceanToRawReaderReturnsOnlyAfterOneByteWasReadFromConnection(t *testing.T) {
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messages := make(chan io.Reader)
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connection := &webSocketConnectionMock{}
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connection.On("WriteMessage", mock.AnythingOfType("int"), mock.AnythingOfType("[]uint8")).Return(nil)
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connection.On("CloseHandler").Return(nil)
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connection.On("SetCloseHandler", mock.Anything).Return()
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call := connection.On("NextReader")
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call.Run(func(_ mock.Arguments) {
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call.Return(websocket.TextMessage, <-messages, nil)
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})
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reader := newCodeOceanToRawReader(connection)
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cancel := reader.startReadInputLoop()
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defer cancel()
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read := make(chan bool)
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//nolint:makezero // this is required here to make the Read call blocking
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message := make([]byte, 10)
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go func() {
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_, err := reader.Read(message)
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require.NoError(t, err)
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read <- true
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}()
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t.Run("Does not return immediately when there is no data", func(t *testing.T) {
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assert.False(t, tests.ChannelReceivesSomething(read, tests.ShortTimeout))
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})
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t.Run("Returns when there is data available", func(t *testing.T) {
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messages <- strings.NewReader("Hello")
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assert.True(t, tests.ChannelReceivesSomething(read, tests.ShortTimeout))
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})
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}
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// --- Test suite specific test helpers ---
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func newNomadAllocationWithMockedAPIClient(runnerID string) (r runner.Runner, executorAPIMock *nomad.ExecutorAPIMock) {
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executorAPIMock = &nomad.ExecutorAPIMock{}
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r = runner.NewNomadJob(runnerID, nil, executorAPIMock, nil)
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return
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}
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func webSocketURL(scheme string, server *httptest.Server, router *mux.Router,
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runnerID string, executionID runner.ExecutionID,
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) (*url.URL, error) {
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websocketURL, err := url.Parse(server.URL)
|
||||
if err != nil {
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return nil, err
|
||||
}
|
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path, err := router.Get(WebsocketPath).URL(RunnerIDKey, runnerID)
|
||||
if err != nil {
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return nil, err
|
||||
}
|
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websocketURL.Scheme = scheme
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websocketURL.Path = path.Path
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websocketURL.RawQuery = fmt.Sprintf("executionID=%s", executionID)
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return websocketURL, nil
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}
|
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|
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func (s *WebSocketTestSuite) webSocketURL(scheme, runnerID string, executionID runner.ExecutionID) (*url.URL, error) {
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return webSocketURL(scheme, s.server, s.router, runnerID, executionID)
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||||
}
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||||
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var executionRequestLs = dto.ExecutionRequest{Command: "ls"}
|
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// mockAPIExecuteLs mocks the ExecuteCommand of an ExecutorApi to act as if
|
||||
// 'ls existing-file non-existing-file' was executed.
|
||||
func mockAPIExecuteLs(api *nomad.ExecutorAPIMock) {
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||||
mockAPIExecute(api, &executionRequestLs,
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func(_ string, _ context.Context, _ []string, _ bool, _ io.Reader, stdout, stderr io.Writer) (int, error) {
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||||
_, _ = stdout.Write([]byte("existing-file\n"))
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||||
_, _ = stderr.Write([]byte("ls: cannot access 'non-existing-file': No such file or directory\n"))
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||||
return 0, nil
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||||
})
|
||||
}
|
||||
|
||||
var executionRequestHead = dto.ExecutionRequest{Command: "head -n 1"}
|
||||
|
||||
// mockAPIExecuteHead mocks the ExecuteCommand of an ExecutorApi to act as if 'head -n 1' was executed.
|
||||
func mockAPIExecuteHead(api *nomad.ExecutorAPIMock) {
|
||||
mockAPIExecute(api, &executionRequestHead,
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||||
func(_ string, _ context.Context, _ []string, _ bool,
|
||||
stdin io.Reader, stdout io.Writer, stderr io.Writer,
|
||||
) (int, error) {
|
||||
scanner := bufio.NewScanner(stdin)
|
||||
for !scanner.Scan() {
|
||||
scanner = bufio.NewScanner(stdin)
|
||||
}
|
||||
_, _ = stdout.Write(scanner.Bytes())
|
||||
return 0, nil
|
||||
})
|
||||
}
|
||||
|
||||
var executionRequestSleep = dto.ExecutionRequest{Command: "sleep infinity"}
|
||||
|
||||
// mockAPIExecuteSleep mocks the ExecuteCommand method of an ExecutorAPI to sleep until the execution is canceled.
|
||||
func mockAPIExecuteSleep(api *nomad.ExecutorAPIMock) <-chan bool {
|
||||
canceled := make(chan bool, 1)
|
||||
mockAPIExecute(api, &executionRequestSleep,
|
||||
func(_ string, ctx context.Context, _ []string, _ bool,
|
||||
stdin io.Reader, stdout io.Writer, stderr io.Writer,
|
||||
) (int, error) {
|
||||
<-ctx.Done()
|
||||
close(canceled)
|
||||
return 0, ctx.Err()
|
||||
})
|
||||
return canceled
|
||||
}
|
||||
|
||||
var executionRequestError = dto.ExecutionRequest{Command: "error"}
|
||||
|
||||
// mockAPIExecuteError mocks the ExecuteCommand method of an ExecutorApi to return an error.
|
||||
func mockAPIExecuteError(api *nomad.ExecutorAPIMock) {
|
||||
mockAPIExecute(api, &executionRequestError,
|
||||
func(_ string, _ context.Context, _ []string, _ bool, _ io.Reader, _, _ io.Writer) (int, error) {
|
||||
return 0, tests.ErrDefault
|
||||
})
|
||||
}
|
||||
|
||||
var executionRequestExitNonZero = dto.ExecutionRequest{Command: "exit 42"}
|
||||
|
||||
// mockAPIExecuteExitNonZero mocks the ExecuteCommand method of an ExecutorApi to exit with exit status 42.
|
||||
func mockAPIExecuteExitNonZero(api *nomad.ExecutorAPIMock) {
|
||||
mockAPIExecute(api, &executionRequestExitNonZero,
|
||||
func(_ string, _ context.Context, _ []string, _ bool, _ io.Reader, _, _ io.Writer) (int, error) {
|
||||
return 42, nil
|
||||
})
|
||||
}
|
||||
|
||||
// mockAPIExecute mocks the ExecuteCommand method of an ExecutorApi to call the given method run when the command
|
||||
// corresponding to the given ExecutionRequest is called.
|
||||
func mockAPIExecute(api *nomad.ExecutorAPIMock, request *dto.ExecutionRequest,
|
||||
run func(runnerId string, ctx context.Context, command []string, tty bool,
|
||||
stdin io.Reader, stdout, stderr io.Writer) (int, error),
|
||||
) {
|
||||
call := api.On("ExecuteCommand",
|
||||
mock.AnythingOfType("string"),
|
||||
mock.Anything,
|
||||
request.FullCommand(),
|
||||
mock.AnythingOfType("bool"),
|
||||
mock.Anything,
|
||||
mock.Anything,
|
||||
mock.Anything)
|
||||
call.Run(func(args mock.Arguments) {
|
||||
exit, err := run(args.Get(0).(string),
|
||||
args.Get(1).(context.Context),
|
||||
args.Get(2).([]string),
|
||||
args.Get(3).(bool),
|
||||
args.Get(4).(io.Reader),
|
||||
args.Get(5).(io.Writer),
|
||||
args.Get(6).(io.Writer))
|
||||
call.ReturnArguments = mock.Arguments{exit, err}
|
||||
})
|
||||
}
|
Reference in New Issue
Block a user