Move the kittens Go code into the kittens folder

kittens/diff/collect_test.go

@@ -0,0 +1,53 @@
+// License: GPLv3 Copyright: 2023, Kovid Goyal, <kovid at kovidgoyal.net>
+
+package diff
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"kitty/tools/utils"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+var _ = fmt.Print
+
+func TestDiffCollectWalk(t *testing.T) {
+	tdir := t.TempDir()
+	j := func(x ...string) string { return filepath.Join(append([]string{tdir}, x...)...) }
+	os.MkdirAll(j("a", "b"), 0o700)
+	os.WriteFile(j("a/b/c"), nil, 0o600)
+	os.WriteFile(j("b"), nil, 0o600)
+	os.WriteFile(j("d"), nil, 0o600)
+	os.WriteFile(j("e"), nil, 0o600)
+	os.WriteFile(j("#d#"), nil, 0o600)
+	os.WriteFile(j("e~"), nil, 0o600)
+	os.MkdirAll(j("f"), 0o700)
+	os.WriteFile(j("f/g"), nil, 0o600)
+	os.WriteFile(j("h space"), nil, 0o600)
+
+	expected_names := utils.NewSetWithItems("d", "e", "f/g", "h space")
+	expected_pmap := map[string]string{
+		"d":       j("d"),
+		"e":       j("e"),
+		"f/g":     j("f/g"),
+		"h space": j("h space"),
+	}
+	names := utils.NewSet[string](16)
+	pmap := make(map[string]string, 16)
+	if err := walk(tdir, []string{"*~", "#*#", "b"}, names, pmap, map[string]string{}); err != nil {
+		t.Fatal(err)
+	}
+	if diff := cmp.Diff(
+		utils.Sort(expected_names.AsSlice(), func(a, b string) bool { return a < b }),
+		utils.Sort(names.AsSlice(), func(a, b string) bool { return a < b }),
+	); diff != "" {
+		t.Fatal(diff)
+	}
+	if diff := cmp.Diff(expected_pmap, pmap); diff != "" {
+		t.Fatal(diff)
+	}
+}