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package runtime_test
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"regexp"
"runtime"
"testing"
)
func checkGdbPython(t *testing.T) {
cmd := exec.Command("gdb", "-nx", "-q", "--batch", "-iex", "python import sys; print('go gdb python support')")
out, err := cmd.CombinedOutput()
if err != nil {
t.Skipf("skipping due to issue running gdb: %v", err)
}
if string(out) != "go gdb python support\n" {
t.Skipf("skipping due to lack of python gdb support: %s", out)
}
}
const helloSource = `
package main
import "fmt"
func main() {
fmt.Println("hi")
}
`
func TestGdbPython(t *testing.T) {
if runtime.GOOS == "darwin" {
t.Skip("gdb does not work on darwin")
}
checkGdbPython(t)
dir, err := ioutil.TempDir("", "go-build")
if err != nil {
t.Fatalf("failed to create temp directory: %v", err)
}
defer os.RemoveAll(dir)
src := filepath.Join(dir, "main.go")
err = ioutil.WriteFile(src, []byte(helloSource), 0644)
if err != nil {
t.Fatalf("failed to create file: %v", err)
}
cmd := exec.Command("go", "build", "-o", "a.exe")
cmd.Dir = dir
out, err := cmd.CombinedOutput()
if err != nil {
t.Fatalf("building source %v\n%s", err, out)
}
got, _ := exec.Command("gdb", "-nx", "-q", "--batch", "-iex",
fmt.Sprintf("add-auto-load-safe-path %s/src/runtime", runtime.GOROOT()),
"-ex", "br 'main.main'",
"-ex", "run",
"-ex", "echo BEGIN info goroutines\n",
"-ex", "info goroutines",
"-ex", "echo END\n",
filepath.Join(dir, "a.exe")).CombinedOutput()
firstLine := bytes.SplitN(got, []byte("\n"), 2)[0]
if string(firstLine) != "Loading Go Runtime support." {
t.Fatalf("failed to load Go runtime support: %s", firstLine)
}
// Extract named BEGIN...END blocks from output
partRe := regexp.MustCompile(`(?ms)^BEGIN ([^\n]*)\n(.*?)\nEND`)
blocks := map[string]string{}
for _, subs := range partRe.FindAllSubmatch(got, -1) {
blocks[string(subs[1])] = string(subs[2])
}
infoGoroutinesRe := regexp.MustCompile(`\*\s+\d+\s+running\s+`)
if bl := blocks["info goroutines"]; !infoGoroutinesRe.MatchString(bl) {
t.Fatalf("info goroutines failed: %s", bl)
}
}
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