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cli_exe_runner.go
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/
cli_exe_runner.go
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package testenv
import (
"io"
"os"
"os/exec"
"path/filepath"
"testing"
"github.com/kopia/kopia/internal/testutil"
)
// CLIExeRunner is a CLIExeRunner that invokes the commands via external executable.
type CLIExeRunner struct {
Exe string
PassthroughStderr bool // this is for debugging only
NextCommandStdin io.Reader // this is used for stdin source tests
ExtraFiles []*os.File // this is used for socket-activation tests
LogsDir string
}
// Start implements CLIRunner.
func (e *CLIExeRunner) Start(t *testing.T, args []string, env map[string]string) (stdout, stderr io.Reader, wait func() error, interrupt func(os.Signal)) {
t.Helper()
c := exec.Command(e.Exe, append([]string{
"--log-dir", e.LogsDir,
}, args...)...)
c.Env = append(c.Env, os.Environ()...)
for k, v := range env {
c.Env = append(c.Env, k+"="+v)
}
stdoutPipe, err := c.StdoutPipe()
if err != nil {
t.Fatalf("can't set up stdout pipe reader: %v", err)
}
stderrPipe, err := c.StderrPipe()
if err != nil {
t.Fatalf("can't set up stderr pipe reader: %v", err)
}
c.Stdin = e.NextCommandStdin
e.NextCommandStdin = nil
c.ExtraFiles = e.ExtraFiles
if err := c.Start(); err != nil {
t.Fatalf("unable to start: %v", err)
}
return stdoutPipe, stderrPipe, c.Wait, func(sig os.Signal) {
if sig == os.Kill {
c.Process.Kill()
return
}
c.Process.Signal(sig)
}
}
// NewExeRunner returns a CLIRunner that will execute kopia commands by launching subprocesses
// for each. The kopia executable must be passed via KOPIA_EXE environment variable. The test
// will be skipped if it's not provided (unless running inside an IDE in which case system-wide
// `kopia` will be used by default).
func NewExeRunner(t *testing.T) *CLIExeRunner {
t.Helper()
exe := os.Getenv("KOPIA_EXE")
if exe == "" {
if os.Getenv("VSCODE_PID") != "" {
// we're launched from VSCode, use system-installed kopia executable.
exe = "kopia"
} else {
t.Skip()
}
}
return NewExeRunnerWithBinary(t, exe)
}
// NewExeRunnerWithBinary returns a CLIRunner that will execute kopia commands by launching subprocesses
// for each.
func NewExeRunnerWithBinary(t *testing.T, exe string) *CLIExeRunner {
t.Helper()
// unset environment variables that disrupt tests when passed to subprocesses.
os.Unsetenv("KOPIA_PASSWORD")
logsDir := testutil.TempLogDirectory(t)
return &CLIExeRunner{
Exe: filepath.FromSlash(exe),
LogsDir: logsDir,
}
}
var _ CLIRunner = (*CLIExeRunner)(nil)