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// SPDX-License-Identifier: GPL-3.0-or-later
package plan
import (
"path/filepath"
"strings"
"testing"
"time"
"krino/internal/config"
"krino/internal/scan"
)
// FuzzExpand: expanding any template against any file name never panics,
// gives the same answer twice, and never succeeds with a {N} beyond the
// capture groups there are - MaxIndex and Expand read placeholders alike.
// Used as a destination - relative, in the home directory, or bare - a
// template never plans a move outside the directory its text names before
// the first placeholder (review M1).
func FuzzExpand(f *testing.F) {
for _, s := range []string{"{name}", "{stem}{ext}", "{mtime:%Y/%m}", "{1}_{2}", "{{literal}}", "{", "}", "{now:%", "{0}", "{9}", "{99999999999999999999}"} {
f.Add(s, "a.b.pdf")
}
f.Fuzz(func(t *testing.T, tmpl, name string) {
facts := Facts{
Name: name,
Captures: []string{name, "x", ".."},
ModTime: time.Date(2026, 8, 15, 12, 0, 0, 0, time.UTC),
Now: time.Date(2026, 9, 14, 0, 0, 0, 0, time.UTC),
}
a, errA := Expand(tmpl, facts)
b, errB := Expand(tmpl, facts)
if a != b || (errA == nil) != (errB == nil) {
t.Fatalf("Expand(%q) differs between two calls: %q/%v, %q/%v", tmpl, a, errA, b, errB)
}
if n, err := MaxIndex(tmpl); err == nil && n > 2 && errA == nil {
t.Fatalf("Expand(%q) = %q, though it uses {%d} and only 2 groups exist", tmpl, a, n)
}
for _, dest := range []string{tmpl, "Out/" + tmpl, "~/docs/" + tmpl} {
in := []Input{{
File: scan.File{Path: "/r/x.pdf", Rel: "x.pdf", Name: "x.pdf", ModTime: facts.ModTime},
Rules: []RuleMatch{{Name: "a", Captures: facts.Captures, Actions: []config.Action{{Kind: config.Move, Arg: dest}}}},
}}
s := Build("/r", in, facts.Now, NoDisk{}, NewClaims())[0].Steps[0]
if strings.ContainsRune(dest, '{') && s.Skip == "" && !within(filepath.Dir(s.Dst), staticDir(dest, "/r")) {
t.Fatalf("destination %q planned %q, outside %q", dest, s.Dst, staticDir(dest, "/r"))
}
}
})
}
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