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Oct 30, 2023
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test(cli/cliui): make agent tests more robust #10415

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test(cli/cliui): make agent tests more robust 
Fixes #10408
  • Loading branch information
@mafredri
mafredri committed Oct 30, 2023
commit d41b350d05154dade8137e9b55f2a5e478e546f3
144 changes: 101 additions & 43 deletions cli/cliui/agent_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -5,12 +5,14 @@ import (
"bytes"
"context"
"io"
"os"
"strings"
"sync/atomic"
"testing"
"time"

"github.com/google/uuid"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"golang.org/x/xerrors"

Expand All @@ -25,9 +27,31 @@ import (
func TestAgent(t *testing.T) {
t.Parallel()

waitLines := func(t *testing.T, output <-chan string, lines ...string) error {
t.Helper()

var got []string
outerLoop:
for _, want := range lines {
for {
select {
case line := <-output:
got = append(got, line)
if strings.Contains(line, want) {
continue outerLoop
}
case <-time.After(testutil.WaitShort):
assert.Failf(t, "timed out waiting for line", "want: %q; got: %q", want, got)
return xerrors.Errorf("timed out waiting for line: %q; got: %q", want, got)
}
}
}
return nil
}

for _, tc := range []struct {
name string
iter []func(context.Context, *codersdk.WorkspaceAgent, chan []codersdk.WorkspaceAgentLog) error
iter []func(context.Context, *testing.T, *codersdk.WorkspaceAgent, <-chan string, chan []codersdk.WorkspaceAgentLog) error
logs chan []codersdk.WorkspaceAgentLog
opts cliui.AgentOptions
want []string
Expand All @@ -38,12 +62,15 @@ func TestAgent(t *testing.T) {
opts: cliui.AgentOptions{
FetchInterval: time.Millisecond,
},
iter: []func(context.Context, *codersdk.WorkspaceAgent, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, agent *codersdk.WorkspaceAgent, _ chan []codersdk.WorkspaceAgentLog) error {
iter: []func(context.Context, *testing.T, *codersdk.WorkspaceAgent, <-chan string, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, _ <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
agent.Status = codersdk.WorkspaceAgentConnecting
return nil
},
func(_ context.Context, agent *codersdk.WorkspaceAgent, logs chan []codersdk.WorkspaceAgentLog) error {
func(_ context.Context, t *testing.T, agent *codersdk.WorkspaceAgent, output <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
return waitLines(t, output, "⧗ Waiting for the workspace agent to connect")
},
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, _ <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
agent.Status = codersdk.WorkspaceAgentConnected
agent.FirstConnectedAt = ptr.Ref(time.Now())
return nil
Expand All @@ -62,12 +89,15 @@ func TestAgent(t *testing.T) {
opts: cliui.AgentOptions{
FetchInterval: time.Millisecond,
},
iter: []func(context.Context, *codersdk.WorkspaceAgent, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, agent *codersdk.WorkspaceAgent, _ chan []codersdk.WorkspaceAgentLog) error {
iter: []func(context.Context, *testing.T, *codersdk.WorkspaceAgent, <-chan string, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, _ <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
agent.Status = codersdk.WorkspaceAgentConnecting
return nil
},
func(_ context.Context, agent *codersdk.WorkspaceAgent, logs chan []codersdk.WorkspaceAgentLog) error {
func(_ context.Context, t *testing.T, agent *codersdk.WorkspaceAgent, output <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
return waitLines(t, output, "⧗ Waiting for the workspace agent to connect")
},
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, _ <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
agent.Status = codersdk.WorkspaceAgentConnected
agent.LifecycleState = codersdk.WorkspaceAgentLifecycleStartTimeout
agent.FirstConnectedAt = ptr.Ref(time.Now())
Expand All @@ -87,18 +117,24 @@ func TestAgent(t *testing.T) {
opts: cliui.AgentOptions{
FetchInterval: 1 * time.Millisecond,
},
iter: []func(context.Context, *codersdk.WorkspaceAgent, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, agent *codersdk.WorkspaceAgent, _ chan []codersdk.WorkspaceAgentLog) error {
iter: []func(context.Context, *testing.T, *codersdk.WorkspaceAgent, <-chan string, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, _ <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
agent.Status = codersdk.WorkspaceAgentConnecting
agent.LifecycleState = codersdk.WorkspaceAgentLifecycleStarting
agent.StartedAt = ptr.Ref(time.Now())
return nil
},
func(_ context.Context, agent *codersdk.WorkspaceAgent, _ chan []codersdk.WorkspaceAgentLog) error {
func(_ context.Context, t *testing.T, agent *codersdk.WorkspaceAgent, output <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
return waitLines(t, output, "⧗ Waiting for the workspace agent to connect")
},
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, _ <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
agent.Status = codersdk.WorkspaceAgentTimeout
return nil
},
func(_ context.Context, agent *codersdk.WorkspaceAgent, logs chan []codersdk.WorkspaceAgentLog) error {
func(_ context.Context, t *testing.T, agent *codersdk.WorkspaceAgent, output <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
return waitLines(t, output, "The workspace agent is having trouble connecting, wait for it to connect or restart your workspace.")
},
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, _ <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
agent.Status = codersdk.WorkspaceAgentConnected
agent.FirstConnectedAt = ptr.Ref(time.Now())
agent.LifecycleState = codersdk.WorkspaceAgentLifecycleReady
Expand All @@ -120,8 +156,8 @@ func TestAgent(t *testing.T) {
opts: cliui.AgentOptions{
FetchInterval: 1 * time.Millisecond,
},
iter: []func(context.Context, *codersdk.WorkspaceAgent, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, agent *codersdk.WorkspaceAgent, _ chan []codersdk.WorkspaceAgentLog) error {
iter: []func(context.Context, *testing.T, *codersdk.WorkspaceAgent, <-chan string, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, _ <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
agent.Status = codersdk.WorkspaceAgentDisconnected
agent.FirstConnectedAt = ptr.Ref(time.Now().Add(-1 * time.Minute))
agent.LastConnectedAt = ptr.Ref(time.Now().Add(-1 * time.Minute))
Expand All @@ -131,7 +167,10 @@ func TestAgent(t *testing.T) {
agent.ReadyAt = ptr.Ref(time.Now())
return nil
},
func(_ context.Context, agent *codersdk.WorkspaceAgent, _ chan []codersdk.WorkspaceAgentLog) error {
func(_ context.Context, t *testing.T, agent *codersdk.WorkspaceAgent, output <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
return waitLines(t, output, "⧗ The workspace agent lost connection")
},
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, _ <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
agent.Status = codersdk.WorkspaceAgentConnected
agent.DisconnectedAt = nil
agent.LastConnectedAt = ptr.Ref(time.Now())
Expand All @@ -151,8 +190,8 @@ func TestAgent(t *testing.T) {
FetchInterval: time.Millisecond,
Wait: true,
},
iter: []func(context.Context, *codersdk.WorkspaceAgent, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, agent *codersdk.WorkspaceAgent, logs chan []codersdk.WorkspaceAgentLog) error {
iter: []func(context.Context, *testing.T, *codersdk.WorkspaceAgent, <-chan string, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, _ <-chan string, logs chan []codersdk.WorkspaceAgentLog) error {
agent.Status = codersdk.WorkspaceAgentConnected
agent.FirstConnectedAt = ptr.Ref(time.Now())
agent.LifecycleState = codersdk.WorkspaceAgentLifecycleStarting
Expand All @@ -170,7 +209,7 @@ func TestAgent(t *testing.T) {
}
return nil
},
func(_ context.Context, agent *codersdk.WorkspaceAgent, logs chan []codersdk.WorkspaceAgentLog) error {
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, _ <-chan string, logs chan []codersdk.WorkspaceAgentLog) error {
agent.LifecycleState = codersdk.WorkspaceAgentLifecycleReady
agent.ReadyAt = ptr.Ref(time.Now())
logs <- []codersdk.WorkspaceAgentLog{
Expand All @@ -195,8 +234,8 @@ func TestAgent(t *testing.T) {
FetchInterval: time.Millisecond,
Wait: true,
},
iter: []func(context.Context, *codersdk.WorkspaceAgent, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, agent *codersdk.WorkspaceAgent, logs chan []codersdk.WorkspaceAgentLog) error {
iter: []func(context.Context, *testing.T, *codersdk.WorkspaceAgent, <-chan string, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, output <-chan string, logs chan []codersdk.WorkspaceAgentLog) error {
agent.Status = codersdk.WorkspaceAgentConnected
agent.FirstConnectedAt = ptr.Ref(time.Now())
agent.StartedAt = ptr.Ref(time.Now())
Expand Down Expand Up @@ -224,8 +263,8 @@ func TestAgent(t *testing.T) {
opts: cliui.AgentOptions{
FetchInterval: time.Millisecond,
},
iter: []func(context.Context, *codersdk.WorkspaceAgent, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, agent *codersdk.WorkspaceAgent, logs chan []codersdk.WorkspaceAgentLog) error {
iter: []func(context.Context, *testing.T, *codersdk.WorkspaceAgent, <-chan string, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, output <-chan string, logs chan []codersdk.WorkspaceAgentLog) error {
agent.Status = codersdk.WorkspaceAgentDisconnected
agent.LifecycleState = codersdk.WorkspaceAgentLifecycleOff
return nil
Expand All @@ -239,8 +278,8 @@ func TestAgent(t *testing.T) {
FetchInterval: time.Millisecond,
Wait: true,
},
iter: []func(context.Context, *codersdk.WorkspaceAgent, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, agent *codersdk.WorkspaceAgent, logs chan []codersdk.WorkspaceAgentLog) error {
iter: []func(context.Context, *testing.T, *codersdk.WorkspaceAgent, <-chan string, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, output <-chan string, logs chan []codersdk.WorkspaceAgentLog) error {
agent.Status = codersdk.WorkspaceAgentConnected
agent.FirstConnectedAt = ptr.Ref(time.Now())
agent.LifecycleState = codersdk.WorkspaceAgentLifecycleStarting
Expand All @@ -253,7 +292,10 @@ func TestAgent(t *testing.T) {
}
return nil
},
func(_ context.Context, agent *codersdk.WorkspaceAgent, logs chan []codersdk.WorkspaceAgentLog) error {
func(_ context.Context, t *testing.T, agent *codersdk.WorkspaceAgent, output <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
return waitLines(t, output, "Hello world")
},
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, _ <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
agent.ReadyAt = ptr.Ref(time.Now())
agent.LifecycleState = codersdk.WorkspaceAgentLifecycleShuttingDown
return nil
Expand All @@ -272,12 +314,15 @@ func TestAgent(t *testing.T) {
FetchInterval: time.Millisecond,
Wait: true,
},
iter: []func(context.Context, *codersdk.WorkspaceAgent, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, agent *codersdk.WorkspaceAgent, _ chan []codersdk.WorkspaceAgentLog) error {
iter: []func(context.Context, *testing.T, *codersdk.WorkspaceAgent, <-chan string, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, _ <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
agent.Status = codersdk.WorkspaceAgentConnecting
return nil
},
func(_ context.Context, agent *codersdk.WorkspaceAgent, _ chan []codersdk.WorkspaceAgentLog) error {
func(_ context.Context, t *testing.T, agent *codersdk.WorkspaceAgent, output <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
return waitLines(t, output, "⧗ Waiting for the workspace agent to connect")
},
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, _ <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
return xerrors.New("bad")
},
},
Expand All @@ -292,13 +337,16 @@ func TestAgent(t *testing.T) {
FetchInterval: time.Millisecond,
Wait: true,
},
iter: []func(context.Context, *codersdk.WorkspaceAgent, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, agent *codersdk.WorkspaceAgent, _ chan []codersdk.WorkspaceAgentLog) error {
iter: []func(context.Context, *testing.T, *codersdk.WorkspaceAgent, <-chan string, chan []codersdk.WorkspaceAgentLog) error{
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, _ <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
agent.Status = codersdk.WorkspaceAgentTimeout
agent.TroubleshootingURL = "https://troubleshoot"
return nil
},
func(_ context.Context, agent *codersdk.WorkspaceAgent, _ chan []codersdk.WorkspaceAgentLog) error {
func(_ context.Context, t *testing.T, agent *codersdk.WorkspaceAgent, output <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
return waitLines(t, output, "The workspace agent is having trouble connecting, wait for it to connect or restart your workspace.")
},
func(_ context.Context, _ *testing.T, agent *codersdk.WorkspaceAgent, output <-chan string, _ chan []codersdk.WorkspaceAgentLog) error {
return xerrors.New("bad")
},
},
Expand All @@ -317,21 +365,27 @@ func TestAgent(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitShort)
defer cancel()

var buf bytes.Buffer
r, w, err := os.Pipe()
require.NoError(t, err, "create pipe failed")
defer r.Close()
defer w.Close()

agent := codersdk.WorkspaceAgent{
ID: uuid.New(),
Status: codersdk.WorkspaceAgentConnecting,
CreatedAt: time.Now(),
LifecycleState: codersdk.WorkspaceAgentLifecycleCreated,
}
output := make(chan string, 100) // Buffered to avoid blocking, overflow is discarded.
logs := make(chan []codersdk.WorkspaceAgentLog, 1)

cmd := &clibase.Cmd{
Handler: func(inv *clibase.Invocation) error {
tc.opts.Fetch = func(_ context.Context, _ uuid.UUID) (codersdk.WorkspaceAgent, error) {
t.Log("iter", len(tc.iter))
var err error
if len(tc.iter) > 0 {
err = tc.iter[0](ctx, &agent, logs)
err = tc.iter[0](ctx, t, &agent, output, logs)
tc.iter = tc.iter[1:]
}
return agent, err
Expand All @@ -352,27 +406,25 @@ func TestAgent(t *testing.T) {
close(fetchLogs)
return fetchLogs, closeFunc(func() error { return nil }), nil
}
err := cliui.Agent(inv.Context(), &buf, uuid.Nil, tc.opts)
err := cliui.Agent(inv.Context(), w, uuid.Nil, tc.opts)
_ = w.Close()
return err
},
}
inv := cmd.Invoke()

w := clitest.StartWithWaiter(t, inv)
if tc.wantErr {
w.RequireError()
} else {
w.RequireSuccess()
}
waiter := clitest.StartWithWaiter(t, inv)

s := bufio.NewScanner(&buf)
s := bufio.NewScanner(r)
for s.Scan() {
line := s.Text()
t.Log(line)
select {
case output <- line:
default:
t.Logf("output overflow: %s", line)
}
if len(tc.want) == 0 {
for i := 0; i < 5; i++ {
t.Log(line)
}
require.Fail(t, "unexpected line", line)
}
require.Contains(t, line, tc.want[0])
Expand All @@ -382,6 +434,12 @@ func TestAgent(t *testing.T) {
if len(tc.want) > 0 {
require.Fail(t, "missing lines: "+strings.Join(tc.want, ", "))
}

if tc.wantErr {
waiter.RequireError()
} else {
waiter.RequireSuccess()
}
})
}

Expand Down