package checks

import (
	"reflect"
	"testing"
	"testing/fstest"
)

func TestMarkdownFilesSkipsToolFolders(t *testing.T) {
	fsys := fstest.MapFS{
		"a.md":         {Data: []byte("x")},
		"b/c.md":       {Data: []byte("x")},
		"b/c.txt":      {Data: []byte("x")},
		".git/d.md":    {Data: []byte("x")},
		".claude/e.md": {Data: []byte("x")},
		".work/f/g.md": {Data: []byte("x")},
	}
	got := markdownFiles(fsys)
	want := []string{"a.md", "b/c.md"}
	if !reflect.DeepEqual(got, want) {
		t.Fatalf("markdownFiles = %q, want %q", got, want)
	}
}

func TestFrontmatterReadsScalarsAndLists(t *testing.T) {
	f := frontmatter("---\nlayer: to-be\ndecisions:\n  - ADR 0001\n  - ADR 0002\ncode: []\ncodes: [a, b]\n---\nbody\n")
	if f.scalar("layer") != "to-be" {
		t.Errorf("layer = %q", f.scalar("layer"))
	}
	if !reflect.DeepEqual(f.list("decisions"), []string{"ADR 0001", "ADR 0002"}) {
		t.Errorf("decisions = %q", f.list("decisions"))
	}
	if len(f.list("code")) != 0 || !reflect.DeepEqual(f.list("codes"), []string{"a", "b"}) {
		t.Errorf("code = %q, codes = %q", f.list("code"), f.list("codes"))
	}
	if frontmatter("no frontmatter") != nil || frontmatter("---\nunclosed") != nil {
		t.Error("a document without a closed block has no frontmatter")
	}
}