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package eval_test
import (
"embed"
"errors"
"fmt"
"math/rand"
"strconv"
"strings"
"testing"
"time"
"src.elv.sh/pkg/eval"
"src.elv.sh/pkg/eval/evaltest"
"src.elv.sh/pkg/eval/vals"
"src.elv.sh/pkg/eval/vars"
"src.elv.sh/pkg/fsutil"
"src.elv.sh/pkg/must"
"src.elv.sh/pkg/testutil"
"src.elv.sh/pkg/transcript"
)
var (
//go:embed *.elvts *.elv
transcripts embed.FS
transcriptNodes = must.OK1(transcript.ParseFromFS(transcripts))
transcriptCodes = extractAllCodes(transcriptNodes)
)
func TestTranscripts(t *testing.T) {
evaltest.TestTranscriptNodes(t, transcriptNodes,
"args", func(ev *eval.Evaler, arg string) {
ev.Args = vals.MakeListSlice(strings.Fields(arg))
},
"recv-bg-job-notification-in-global", func(ev *eval.Evaler) {
noteCh := make(chan string, 10)
ev.BgJobNotify = func(s string) { noteCh <- s }
ev.ExtendGlobal(eval.BuildNs().
AddGoFn("recv-bg-job-notification", func() any { return <-noteCh }))
},
"with-temp-home", func(t *testing.T) { testutil.TempHome(t) },
"reseed-afterwards", func(t *testing.T) {
t.Cleanup(func() {
//lint:ignore SA1019 Reseed to make other RNG-dependent tests non-deterministic
rand.Seed(time.Now().UTC().UnixNano())
})
},
"check-exit-code-afterwards", func(t *testing.T, arg string) {
var exitCodes []int
testutil.Set(t, eval.OSExit, func(i int) {
exitCodes = append(exitCodes, i)
})
wantExitCode := must.OK1(strconv.Atoi(arg))
t.Cleanup(func() {
if len(exitCodes) != 1 {
t.Errorf("os.Exit called %d times, want once", len(exitCodes))
} else if exitCodes[0] != wantExitCode {
t.Errorf("os.Exit called with %d, want %d", exitCodes[0], wantExitCode)
}
})
},
"check-pre-exit-hook-afterwards", func(t *testing.T, ev *eval.Evaler) {
testutil.Set(t, eval.OSExit, func(int) {})
calls := 0
ev.PreExitHooks = append(ev.PreExitHooks, func() { calls++ })
t.Cleanup(func() {
if calls != 1 {
t.Errorf("pre-exit hook called %v times, want 1", calls)
}
})
},
"add-bad-var", func(ev *eval.Evaler, arg string) {
name, allowedSetsString, _ := strings.Cut(arg, " ")
allowedSets := must.OK1(strconv.Atoi(allowedSetsString))
ev.ExtendGlobal(eval.BuildNs().AddVar(name, &badVar{allowedSets}))
},
"tmp-lib-dir", func(t *testing.T, ev *eval.Evaler) {
libdir := testutil.TempDir(t)
ev.LibDirs = []string{libdir}
ev.ExtendGlobal(eval.BuildNs().
AddVar("lib", vars.NewReadOnly(libdir)))
},
"two-tmp-lib-dirs", func(t *testing.T, ev *eval.Evaler) {
libdir1 := testutil.TempDir(t)
libdir2 := testutil.TempDir(t)
ev.LibDirs = []string{libdir1, libdir2}
ev.ExtendGlobal(eval.BuildNs().
AddVar("lib1", vars.NewReadOnly(libdir1)).
AddVar("lib2", vars.NewReadOnly(libdir2)))
},
"add-var-in-builtin", func(ev *eval.Evaler) {
addVar := func(name string, val any) {
ev.ExtendGlobal(eval.BuildNs().AddVar(name, vars.FromInit(val)))
}
ev.ExtendBuiltin(eval.BuildNs().AddGoFn("add-var", addVar))
},
"test-time-scale-in-global", func(ev *eval.Evaler) {
ev.ExtendGlobal(eval.BuildNs().
AddVar("test-time-scale", vars.NewReadOnly(testutil.TestTimeScale())))
},
"mock-get-home-error", func(t *testing.T, msg string) {
err := errors.New(msg)
testutil.Set(t, eval.GetHome,
func(name string) (string, error) { return "", err })
},
"force-eval-source-count", func(t *testing.T, arg string) {
c := must.OK1(strconv.Atoi(arg))
testutil.Set(t, eval.NextEvalCount, func() int { return c })
},
"mock-time-after", func(t *testing.T) {
testutil.Set(t, eval.TimeAfter,
func(fm *eval.Frame, d time.Duration) <-chan time.Time {
fmt.Fprintf(fm.ByteOutput(), "slept for %s\n", d)
return time.After(0)
})
},
"mock-benchmark-run-durations", func(t *testing.T, arg string) {
// The benchmark command calls time.Now once before a run and once
// after a run.
var ticks []int64
for i, field := range strings.Fields(arg) {
d := must.OK1(strconv.ParseInt(field, 0, 64))
if i == 0 {
ticks = append(ticks, 0, d)
} else {
last := ticks[len(ticks)-1]
ticks = append(ticks, last, last+d)
}
}
testutil.Set(t, eval.TimeNow, func() time.Time {
if len(ticks) == 0 {
panic("mock TimeNow called more than len(ticks)")
}
v := ticks[0]
ticks = ticks[1:]
return time.Unix(v, 0)
})
},
"inject-time-after-with-sigint-or-skip", injectTimeAfterWithSIGINTOrSkip,
"mock-getwd-error", func(t *testing.T, msg string) {
err := errors.New(msg)
testutil.Set(t, eval.Getwd, func() (string, error) { return "", err })
},
"mock-no-other-home", func(t *testing.T) {
testutil.Set(t, eval.GetHome, func(name string) (string, error) {
switch name {
case "":
return fsutil.GetHome("")
default:
return "", fmt.Errorf("don't know home of %v", name)
}
})
},
"mock-one-other-home", func(t *testing.T, ev *eval.Evaler) {
otherHome := testutil.TempDir(t)
ev.ExtendGlobal(eval.BuildNs().AddVar("other-home", vars.NewReadOnly(otherHome)))
testutil.Set(t, eval.GetHome, func(name string) (string, error) {
switch name {
case "":
return fsutil.GetHome("")
case "other":
return otherHome, nil
default:
return "", fmt.Errorf("don't know home of %v", name)
}
})
},
"go-fns-mod-in-global", func(ev *eval.Evaler) {
ev.ExtendGlobal(eval.BuildNs().AddNs("go-fns", goFnsMod))
},
"call-hook-in-global", func(ev *eval.Evaler) {
callHook := func(fm *eval.Frame, name string, hook vals.List, args ...any) {
evalCfg := &eval.EvalCfg{Ports: []*eval.Port{fm.Port(0), fm.Port(1), fm.Port(2)}}
eval.CallHook(fm.Evaler, evalCfg, name, hook, args...)
}
ev.ExtendGlobal(eval.BuildNs().AddGoFn("call-hook", callHook))
},
)
}
var errBadVar = errors.New("bad var")
type badVar struct{ allowedSets int }
func (v *badVar) Get() any { return nil }
func (v *badVar) Set(any) error {
if v.allowedSets == 0 {
return errBadVar
}
v.allowedSets--
return nil
}
func extractAllCodes(nodes []*transcript.Node) []string {
var codes []string
for _, node := range nodes {
var codeBuf strings.Builder
for i, interaction := range node.Interactions {
if i > 0 {
codeBuf.WriteByte('\n')
}
codeBuf.WriteString(interaction.Code)
}
codes = append(codes, codeBuf.String())
codes = append(codes, extractAllCodes(node.Children)...)
}
return codes
}
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