package e2e

import (
	"os/exec"
	"strings"
	"testing"
)

// Chapter 40.1 lists what a mirror clone takes, and a promise about leaving must be exact.
func TestAMirrorCloneTakesEverythingChapter40Lists(t *testing.T) {
	if _, err := exec.LookPath("git"); err != nil {
		t.Skip("git is not installed")
	}
	in := newInstance(t)
	john := in.account("john")
	mark := in.account("mark")
	work := seed(t, in, john, "john", "johnbot")
	run(t, work, "git", "tag", "-a", "v1.0.0", "-m", "the first release")
	run(t, work, "git", "push", "-q", in.url(john, "/john/johnbot"), "v1.0.0")

	// A proposal, then a rewrite of it, so there is a retained revision to take as well.
	mine := clone(t, in, mark, "/john/johnbot")
	commit(t, mine, "package main\n\nfunc main() {}\n", "a first attempt")
	run(t, mine, "git", "push", "-q", in.url(mark, "/john/johnbot"), "HEAD:refs/proposals/new")
	commit(t, mine, "package main\n\nfunc main() { println(1) }\n", "a second attempt")
	run(t, mine, "git", "push", "-q", "-f", in.url(mark, "/john/johnbot"), "HEAD:refs/proposals/1")

	// A build result, because chapter 40.1 promises those come too and they live in a note.
	sha := strings.TrimSpace(run(t, work, "git", "rev-parse", "HEAD"))
	passRun(t, in, "john", "john/johnbot", sha, "build")

	away := t.TempDir()
	run(t, away, "git", "clone", "--mirror", "-q", in.url(john, "/john/johnbot"), "johnbot.git")
	took := run(t, away+"/johnbot.git", "git", "for-each-ref", "--format=%(refname)")

	// Every kind chapter 40.1 names, and the revisions comments are anchored to. 43.5.
	for _, want := range []string{
		"refs/heads/master", "refs/tags/v1.0.0", "refs/proposals/1",
		"refs/notes/threads/1", "refs/revisions/1/", "refs/notes/runs",
	} {
		if !strings.Contains(took, want) {
			t.Errorf("a mirror clone left %s behind:\n%s", want, took)
		}
	}
}