package integration

import (
	"strings"
	"testing"
)

func TestExecPS(t *testing.T) {
	if testing.Short() {
		return
	}

	rootfs, err := newRootFs()
	if err != nil {
		t.Fatal(err)
	}
	defer remove(rootfs)

	config := newTemplateConfig(rootfs)
	buffers, exitCode, err := runContainer(config, "", "ps")
	if err != nil {
		t.Fatal(err)
	}

	if exitCode != 0 {
		t.Fatalf("exit code not 0. code %d stderr %q", exitCode, buffers.Stderr)
	}

	lines := strings.Split(buffers.Stdout.String(), "\n")
	if len(lines) < 2 {
		t.Fatalf("more than one process running for output %q", buffers.Stdout.String())
	}
	expected := `1 root     ps`
	actual := strings.Trim(lines[1], "\n ")
	if actual != expected {
		t.Fatalf("expected output %q but received %q", expected, actual)
	}
}