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package message_test
import (
"bytes"
"errors"
"io"
"log"
"strings"
"syscall"
"testing"
"hakurei.app/container"
"hakurei.app/container/stub"
"hakurei.app/message"
)
func TestMessageError(t *testing.T) {
t.Parallel()
testCases := []struct {
name string
err error
want string
wantOk bool
}{
{"nil", nil, "", false},
{"new", errors.New(":3"), "", false},
{"start", &container.StartError{
Step: "meow",
Err: syscall.ENOTRECOVERABLE,
}, "cannot meow: state not recoverable", true},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
t.Parallel()
got, ok := message.GetMessage(tc.err)
if got != tc.want {
t.Errorf("GetMessage: %q, want %q", got, tc.want)
}
if ok != tc.wantOk {
t.Errorf("GetMessage: ok = %v, want %v", ok, tc.wantOk)
}
})
}
}
func TestDefaultMsg(t *testing.T) {
// copied from output.go
const suspendBufMax = 1 << 24
t.Parallel()
t.Run("logger", func(t *testing.T) {
t.Run("nil", func(t *testing.T) {
got := message.New(nil).GetLogger()
if out := got.Writer().(*message.Suspendable).Downstream; out != log.Writer() {
t.Errorf("GetLogger: Downstream = %#v", out)
}
if prefix := got.Prefix(); prefix != "container: " {
t.Errorf("GetLogger: prefix = %q", prefix)
}
})
t.Run("takeover", func(t *testing.T) {
l := log.New(io.Discard, "\x00", 0xbeef)
got := message.New(l)
if logger := got.GetLogger(); logger != l {
t.Errorf("GetLogger: %#v, want %#v", logger, l)
}
if ds := l.Writer().(*message.Suspendable).Downstream; ds != io.Discard {
t.Errorf("GetLogger: Downstream = %#v", ds)
}
})
})
dw := expectWriter{t: t}
steps := []struct {
name string
pt, next []byte
err error
f func(t *testing.T, msg message.Msg)
}{
{"zero verbose", nil, nil, nil, func(t *testing.T, msg message.Msg) {
if msg.IsVerbose() {
t.Error("IsVerbose unexpected true")
}
}},
{"swap false", nil, nil, nil, func(t *testing.T, msg message.Msg) {
if msg.SwapVerbose(false) {
t.Error("SwapVerbose unexpected true")
}
}},
{"write discard", nil, nil, nil, func(_ *testing.T, msg message.Msg) {
msg.Verbose("\x00")
msg.Verbosef("\x00")
}},
{"verbose false", nil, nil, nil, func(t *testing.T, msg message.Msg) {
if msg.IsVerbose() {
t.Error("IsVerbose unexpected true")
}
}},
{"swap true", nil, nil, nil, func(t *testing.T, msg message.Msg) {
if msg.SwapVerbose(true) {
t.Error("SwapVerbose unexpected true")
}
}},
{"write verbose", []byte("test: \x00\n"), nil, nil, func(_ *testing.T, msg message.Msg) {
msg.Verbose("\x00")
}},
{"write verbosef", []byte(`test: "\x00"` + "\n"), nil, nil, func(_ *testing.T, msg message.Msg) {
msg.Verbosef("%q", "\x00")
}},
{"verbose true", nil, nil, nil, func(t *testing.T, msg message.Msg) {
if !msg.IsVerbose() {
t.Error("IsVerbose unexpected false")
}
}},
{"resume noop", nil, nil, nil, func(t *testing.T, msg message.Msg) {
if msg.Resume() {
t.Error("Resume unexpected success")
}
}},
{"beforeExit noop", nil, nil, nil, func(_ *testing.T, msg message.Msg) {
msg.BeforeExit()
}},
{"beforeExit suspend", nil, nil, nil, func(_ *testing.T, msg message.Msg) {
msg.Suspend()
}},
{"beforeExit message", []byte("test: beforeExit reached on suspended output\n"), nil, nil, func(_ *testing.T, msg message.Msg) {
msg.BeforeExit()
}},
{"post beforeExit resume noop", nil, nil, nil, func(t *testing.T, msg message.Msg) {
if msg.Resume() {
t.Error("Resume unexpected success")
}
}},
{"suspend", nil, nil, nil, func(_ *testing.T, msg message.Msg) {
msg.Suspend()
}},
{"suspend write", nil, nil, nil, func(_ *testing.T, msg message.Msg) {
msg.GetLogger().Print("\x00")
}},
{"resume error", []byte("test: \x00\n"), []byte("test: cannot dump buffer on resume: unique error 0 injected by the test suite\n"), stub.UniqueError(0), func(t *testing.T, msg message.Msg) {
if !msg.Resume() {
t.Error("Resume unexpected failure")
}
}},
{"suspend drop", nil, nil, nil, func(_ *testing.T, msg message.Msg) {
msg.Suspend()
}},
{"suspend write fill", nil, nil, nil, func(_ *testing.T, msg message.Msg) {
msg.GetLogger().Print(strings.Repeat("\x00", suspendBufMax))
}},
{"resume dropped", append([]byte("test: "), bytes.Repeat([]byte{0}, suspendBufMax-6)...), []byte("test: dropped 7 bytes while output is suspended\n"), nil, func(t *testing.T, msg message.Msg) {
if !msg.Resume() {
t.Error("Resume unexpected failure")
}
}},
}
msg := message.New(log.New(&dw, "test: ", 0))
for _, step := range steps {
// these share the same writer, so cannot be subtests
t.Logf("running step %q", step.name)
dw.expect, dw.next, dw.err = step.pt, step.next, step.err
step.f(t, msg)
if dw.expect != nil {
t.Errorf("expect: %q", string(dw.expect))
}
}
}
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