coder/cli/cliui/agent_test.go

670 lines
23 KiB
Go

package cliui_test
import (
"bufio"
"bytes"
"context"
"io"
"os"
"regexp"
"strings"
"sync/atomic"
"testing"
"time"
"github.com/google/uuid"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"golang.org/x/xerrors"
"tailscale.com/tailcfg"
"github.com/coder/coder/v2/cli/clitest"
"github.com/coder/coder/v2/cli/cliui"
"github.com/coder/coder/v2/coderd/util/ptr"
"github.com/coder/coder/v2/codersdk"
"github.com/coder/coder/v2/tailnet"
"github.com/coder/coder/v2/testutil"
"github.com/coder/serpent"
)
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, *testing.T, *codersdk.WorkspaceAgent, <-chan string, chan []codersdk.WorkspaceAgentLog) error
logs chan []codersdk.WorkspaceAgentLog
opts cliui.AgentOptions
want []string
wantErr bool
}{
{
name: "Initial connection",
opts: cliui.AgentOptions{
FetchInterval: time.Millisecond,
},
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, 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
},
},
want: []string{
"⧗ Waiting for the workspace agent to connect",
"✔ Waiting for the workspace agent to connect",
"⧗ Running workspace agent startup scripts (non-blocking)",
"Notice: The startup scripts are still running and your workspace may be incomplete.",
"For more information and troubleshooting, see",
},
},
{
name: "Start timeout",
opts: cliui.AgentOptions{
FetchInterval: time.Millisecond,
},
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, 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())
return nil
},
},
want: []string{
"⧗ Waiting for the workspace agent to connect",
"✔ Waiting for the workspace agent to connect",
"⧗ Running workspace agent startup scripts (non-blocking)",
"✘ Running workspace agent startup scripts (non-blocking)",
"Warning: A startup script timed out and your workspace may be incomplete.",
},
},
{
name: "Initial connection timeout",
opts: cliui.AgentOptions{
FetchInterval: 1 * time.Millisecond,
},
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, 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, 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
agent.ReadyAt = ptr.Ref(time.Now())
return nil
},
},
want: []string{
"⧗ Waiting for the workspace agent to connect",
"The workspace agent is having trouble connecting, wait for it to connect or restart your workspace.",
"For more information and troubleshooting, see",
"✔ Waiting for the workspace agent to connect",
"⧗ Running workspace agent startup scripts (non-blocking)",
"✔ Running workspace agent startup scripts (non-blocking)",
},
},
{
name: "Disconnected",
opts: cliui.AgentOptions{
FetchInterval: 1 * time.Millisecond,
},
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))
agent.DisconnectedAt = ptr.Ref(time.Now())
agent.LifecycleState = codersdk.WorkspaceAgentLifecycleReady
agent.StartedAt = ptr.Ref(time.Now().Add(-1 * time.Minute))
agent.ReadyAt = ptr.Ref(time.Now())
return nil
},
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())
return nil
},
},
want: []string{
"⧗ The workspace agent lost connection",
"Wait for it to reconnect or restart your workspace.",
"For more information and troubleshooting, see",
"✔ The workspace agent lost connection",
},
},
{
name: "Startup Logs",
opts: cliui.AgentOptions{
FetchInterval: time.Millisecond,
Wait: true,
},
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
agent.StartedAt = ptr.Ref(time.Now())
agent.LogSources = []codersdk.WorkspaceAgentLogSource{{
ID: uuid.Nil,
DisplayName: "testing",
}}
logs <- []codersdk.WorkspaceAgentLog{
{
CreatedAt: time.Now(),
Output: "Hello world",
SourceID: uuid.Nil,
},
}
return nil
},
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{
{
CreatedAt: time.Now(),
Output: "Bye now",
},
}
return nil
},
},
want: []string{
"⧗ Running workspace agent startup scripts",
"testing: Hello world",
"Bye now",
"✔ Running workspace agent startup scripts",
},
},
{
name: "Startup script exited with error",
opts: cliui.AgentOptions{
FetchInterval: time.Millisecond,
Wait: true,
},
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())
agent.LifecycleState = codersdk.WorkspaceAgentLifecycleStartError
agent.ReadyAt = ptr.Ref(time.Now())
logs <- []codersdk.WorkspaceAgentLog{
{
CreatedAt: time.Now(),
Output: "Hello world",
},
}
return nil
},
},
want: []string{
"⧗ Running workspace agent startup scripts",
"Hello world",
"✘ Running workspace agent startup scripts",
"Warning: A startup script exited with an error and your workspace may be incomplete.",
"For more information and troubleshooting, see",
},
},
{
name: "Error when shutting down",
opts: cliui.AgentOptions{
FetchInterval: time.Millisecond,
},
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
},
},
wantErr: true,
},
{
name: "Error when shutting down while waiting",
opts: cliui.AgentOptions{
FetchInterval: time.Millisecond,
Wait: true,
},
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
agent.StartedAt = ptr.Ref(time.Now())
logs <- []codersdk.WorkspaceAgentLog{
{
CreatedAt: time.Now(),
Output: "Hello world",
},
}
return nil
},
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
},
},
want: []string{
"⧗ Running workspace agent startup scripts",
"Hello world",
"✔ Running workspace agent startup scripts",
},
wantErr: true,
},
{
name: "Error during fetch",
opts: cliui.AgentOptions{
FetchInterval: time.Millisecond,
Wait: true,
},
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, 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")
},
},
want: []string{
"⧗ Waiting for the workspace agent to connect",
},
wantErr: true,
},
{
name: "Shows agent troubleshooting URL",
opts: cliui.AgentOptions{
FetchInterval: time.Millisecond,
Wait: true,
},
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, 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")
},
},
want: []string{
"⧗ Waiting for the workspace agent to connect",
"The workspace agent is having trouble connecting, wait for it to connect or restart your workspace.",
"https://troubleshoot",
},
wantErr: true,
},
} {
tc := tc
t.Run(tc.name, func(t *testing.T) {
t.Parallel()
ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitShort)
defer cancel()
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 := &serpent.Command{
Handler: func(inv *serpent.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, t, &agent, output, logs)
tc.iter = tc.iter[1:]
}
return agent, err
}
tc.opts.FetchLogs = func(ctx context.Context, _ uuid.UUID, _ int64, follow bool) (<-chan []codersdk.WorkspaceAgentLog, io.Closer, error) {
if follow {
return logs, closeFunc(func() error { return nil }), nil
}
fetchLogs := make(chan []codersdk.WorkspaceAgentLog, 1)
select {
case <-ctx.Done():
return nil, nil, ctx.Err()
case l := <-logs:
fetchLogs <- l
default:
}
close(fetchLogs)
return fetchLogs, closeFunc(func() error { return nil }), nil
}
err := cliui.Agent(inv.Context(), w, uuid.Nil, tc.opts)
_ = w.Close()
return err
},
}
inv := cmd.Invoke()
waiter := clitest.StartWithWaiter(t, inv)
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 {
require.Fail(t, "unexpected line", line)
}
require.Contains(t, line, tc.want[0])
tc.want = tc.want[1:]
}
require.NoError(t, s.Err())
if len(tc.want) > 0 {
require.Fail(t, "missing lines: "+strings.Join(tc.want, ", "))
}
if tc.wantErr {
waiter.RequireError()
} else {
waiter.RequireSuccess()
}
})
}
t.Run("NotInfinite", func(t *testing.T) {
t.Parallel()
var fetchCalled uint64
cmd := &serpent.Command{
Handler: func(inv *serpent.Invocation) error {
buf := bytes.Buffer{}
err := cliui.Agent(inv.Context(), &buf, uuid.Nil, cliui.AgentOptions{
FetchInterval: 10 * time.Millisecond,
Fetch: func(ctx context.Context, agentID uuid.UUID) (codersdk.WorkspaceAgent, error) {
atomic.AddUint64(&fetchCalled, 1)
return codersdk.WorkspaceAgent{
Status: codersdk.WorkspaceAgentConnected,
LifecycleState: codersdk.WorkspaceAgentLifecycleReady,
}, nil
},
})
if err != nil {
return err
}
require.Never(t, func() bool {
called := atomic.LoadUint64(&fetchCalled)
return called > 5 || called == 0
}, time.Second, 100*time.Millisecond)
return nil
},
}
require.NoError(t, cmd.Invoke().Run())
})
}
func TestPeerDiagnostics(t *testing.T) {
t.Parallel()
testCases := []struct {
name string
diags tailnet.PeerDiagnostics
want []*regexp.Regexp // must be ordered, can omit lines
}{
{
name: "noPreferredDERP",
diags: tailnet.PeerDiagnostics{
PreferredDERP: 0,
DERPRegionNames: make(map[int]string),
SentNode: true,
ReceivedNode: &tailcfg.Node{DERP: "127.3.3.40:999"},
LastWireguardHandshake: time.Now(),
},
want: []*regexp.Regexp{
regexp.MustCompile("^✘ not connected to DERP$"),
},
},
{
name: "preferredDERP",
diags: tailnet.PeerDiagnostics{
PreferredDERP: 23,
DERPRegionNames: map[int]string{
23: "testo",
},
SentNode: true,
ReceivedNode: &tailcfg.Node{DERP: "127.3.3.40:999"},
LastWireguardHandshake: time.Now(),
},
want: []*regexp.Regexp{
regexp.MustCompile(`^✔ preferred DERP region: 23 \(testo\)$`),
},
},
{
name: "sentNode",
diags: tailnet.PeerDiagnostics{
PreferredDERP: 0,
DERPRegionNames: map[int]string{},
SentNode: true,
ReceivedNode: &tailcfg.Node{DERP: "127.3.3.40:999"},
LastWireguardHandshake: time.Time{},
},
want: []*regexp.Regexp{
regexp.MustCompile(`^✔ sent local data to Coder networking coodinator$`),
},
},
{
name: "didntSendNode",
diags: tailnet.PeerDiagnostics{
PreferredDERP: 0,
DERPRegionNames: map[int]string{},
SentNode: false,
ReceivedNode: &tailcfg.Node{DERP: "127.3.3.40:999"},
LastWireguardHandshake: time.Time{},
},
want: []*regexp.Regexp{
regexp.MustCompile(`^✘ have not sent local data to Coder networking coordinator$`),
},
},
{
name: "receivedNodeDERPOKNoEndpoints",
diags: tailnet.PeerDiagnostics{
PreferredDERP: 0,
DERPRegionNames: map[int]string{999: "Embedded"},
SentNode: true,
ReceivedNode: &tailcfg.Node{DERP: "127.3.3.40:999"},
LastWireguardHandshake: time.Time{},
},
want: []*regexp.Regexp{
regexp.MustCompile(`^✔ received remote agent data from Coder networking coordinator$`),
regexp.MustCompile(`preferred DERP region: 999 \(Embedded\)$`),
regexp.MustCompile(`endpoints: $`),
},
},
{
name: "receivedNodeDERPUnknownNoEndpoints",
diags: tailnet.PeerDiagnostics{
PreferredDERP: 0,
DERPRegionNames: map[int]string{},
SentNode: true,
ReceivedNode: &tailcfg.Node{DERP: "127.3.3.40:999"},
LastWireguardHandshake: time.Time{},
},
want: []*regexp.Regexp{
regexp.MustCompile(`^✔ received remote agent data from Coder networking coordinator$`),
regexp.MustCompile(`preferred DERP region: 999 \(unknown\)$`),
regexp.MustCompile(`endpoints: $`),
},
},
{
name: "receivedNodeEndpointsNoDERP",
diags: tailnet.PeerDiagnostics{
PreferredDERP: 0,
DERPRegionNames: map[int]string{999: "Embedded"},
SentNode: true,
ReceivedNode: &tailcfg.Node{Endpoints: []string{"99.88.77.66:4555", "33.22.11.0:3444"}},
LastWireguardHandshake: time.Time{},
},
want: []*regexp.Regexp{
regexp.MustCompile(`^✔ received remote agent data from Coder networking coordinator$`),
regexp.MustCompile(`preferred DERP region:\s*$`),
regexp.MustCompile(`endpoints: 99\.88\.77\.66:4555, 33\.22\.11\.0:3444$`),
},
},
{
name: "didntReceiveNode",
diags: tailnet.PeerDiagnostics{
PreferredDERP: 0,
DERPRegionNames: map[int]string{},
SentNode: false,
ReceivedNode: nil,
LastWireguardHandshake: time.Time{},
},
want: []*regexp.Regexp{
regexp.MustCompile(`^✘ have not received remote agent data from Coder networking coordinator$`),
},
},
{
name: "noWireguardHandshake",
diags: tailnet.PeerDiagnostics{
PreferredDERP: 0,
DERPRegionNames: map[int]string{},
SentNode: false,
ReceivedNode: nil,
LastWireguardHandshake: time.Time{},
},
want: []*regexp.Regexp{
regexp.MustCompile(`^✘ Wireguard is not connected$`),
},
},
{
name: "wireguardHandshakeRecent",
diags: tailnet.PeerDiagnostics{
PreferredDERP: 0,
DERPRegionNames: map[int]string{},
SentNode: false,
ReceivedNode: nil,
LastWireguardHandshake: time.Now().Add(-5 * time.Second),
},
want: []*regexp.Regexp{
regexp.MustCompile(`^✔ Wireguard handshake \d+s ago$`),
},
},
{
name: "wireguardHandshakeOld",
diags: tailnet.PeerDiagnostics{
PreferredDERP: 0,
DERPRegionNames: map[int]string{},
SentNode: false,
ReceivedNode: nil,
LastWireguardHandshake: time.Now().Add(-450 * time.Second), // 7m30s
},
want: []*regexp.Regexp{
regexp.MustCompile(`^⚠ Wireguard handshake 7m\d+s ago$`),
},
},
}
for _, tc := range testCases {
tc := tc
t.Run(tc.name, func(t *testing.T) {
t.Parallel()
r, w := io.Pipe()
go func() {
defer w.Close()
cliui.PeerDiagnostics(w, tc.diags)
}()
s := bufio.NewScanner(r)
i := 0
got := make([]string, 0)
for s.Scan() {
got = append(got, s.Text())
if i < len(tc.want) {
reg := tc.want[i]
if reg.Match(s.Bytes()) {
i++
}
}
}
if i < len(tc.want) {
t.Logf("failed to match regexp: %s\ngot:\n%s", tc.want[i].String(), strings.Join(got, "\n"))
t.FailNow()
}
})
}
}