File size: 3,773 Bytes
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// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build ignore
package main
import (
"bytes"
"fmt"
"internal/trace/raw"
"internal/trace/version"
"internal/txtar"
"io"
"log"
"os"
"os/exec"
"path/filepath"
"regexp"
)
func main() {
log.SetFlags(0)
ctx, err := newContext()
if err != nil {
log.Fatal(err)
}
if err := ctx.runGenerators(); err != nil {
log.Fatal(err)
}
if err := ctx.runTestProg("./testprog/annotations.go"); err != nil {
log.Fatal(err)
}
if err := ctx.runTestProg("./testprog/annotations-stress.go"); err != nil {
log.Fatal(err)
}
}
type context struct {
testNames map[string]struct{}
filter *regexp.Regexp
}
func newContext() (*context, error) {
var filter *regexp.Regexp
var err error
if pattern := os.Getenv("GOTRACETEST"); pattern != "" {
filter, err = regexp.Compile(pattern)
if err != nil {
return nil, fmt.Errorf("compiling regexp %q for GOTRACETEST: %v", pattern, err)
}
}
return &context{
testNames: make(map[string]struct{}),
filter: filter,
}, nil
}
func (ctx *context) register(testName string) (skip bool, err error) {
if _, ok := ctx.testNames[testName]; ok {
return true, fmt.Errorf("duplicate test %s found", testName)
}
if ctx.filter != nil {
return !ctx.filter.MatchString(testName), nil
}
return false, nil
}
func (ctx *context) runGenerators() error {
generators, err := filepath.Glob("./generators/*.go")
if err != nil {
return fmt.Errorf("reading generators: %v", err)
}
genroot := "./tests"
if err := os.MkdirAll(genroot, 0777); err != nil {
return fmt.Errorf("creating generated root: %v", err)
}
for _, path := range generators {
name := filepath.Base(path)
name = name[:len(name)-len(filepath.Ext(name))]
// Skip if we have a pattern and this test doesn't match.
skip, err := ctx.register(name)
if err != nil {
return err
}
if skip {
continue
}
fmt.Fprintf(os.Stderr, "generating %s... ", name)
// Get the test path.
testPath := filepath.Join(genroot, fmt.Sprintf("%s.test", name))
// Run generator.
cmd := exec.Command("go", "run", path, testPath)
if out, err := cmd.CombinedOutput(); err != nil {
return fmt.Errorf("running generator %s: %v:\n%s", name, err, out)
}
fmt.Fprintln(os.Stderr)
}
return nil
}
func (ctx *context) runTestProg(progPath string) error {
name := filepath.Base(progPath)
name = name[:len(name)-len(filepath.Ext(name))]
name = fmt.Sprintf("go1%d-%s", version.Current, name)
// Skip if we have a pattern and this test doesn't match.
skip, err := ctx.register(name)
if err != nil {
return err
}
if skip {
return nil
}
// Create command.
var trace, stderr bytes.Buffer
cmd := exec.Command("go", "run", progPath)
cmd.Stdout = &trace
cmd.Stderr = &stderr
// Run trace program; the trace will appear in stdout.
fmt.Fprintf(os.Stderr, "running trace program %s...\n", name)
if err := cmd.Run(); err != nil {
log.Fatalf("running trace program: %v:\n%s", err, stderr.String())
}
// Write out the trace.
var textTrace bytes.Buffer
r, err := raw.NewReader(&trace)
if err != nil {
log.Fatalf("reading trace: %v", err)
}
w, err := raw.NewTextWriter(&textTrace, version.Current)
for {
ev, err := r.ReadEvent()
if err == io.EOF {
break
}
if err != nil {
log.Fatalf("reading trace: %v", err)
}
if err := w.WriteEvent(ev); err != nil {
log.Fatalf("writing trace: %v", err)
}
}
testData := txtar.Format(&txtar.Archive{
Files: []txtar.File{
{Name: "expect", Data: []byte("SUCCESS")},
{Name: "trace", Data: textTrace.Bytes()},
},
})
return os.WriteFile(fmt.Sprintf("./tests/%s.test", name), testData, 0o664)
}
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