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// SPDX-License-Identifier: GPL-3.0-or-later
package engine
import (
"context"
"os"
"path/filepath"
"strings"
"testing"
"time"
"krino/internal/plan"
"krino/internal/scan"
)
// excludeTree creates ~/dl with files (name -> content), all old enough to
// be scanned, and returns home and dl.
func excludeTree(t *testing.T, files map[string]string) (home, dl string) {
t.Helper()
home = sandbox(t)
t.Setenv("PATH", t.TempDir())
dl = filepath.Join(home, "dl")
old := time.Date(2026, 1, 1, 0, 0, 0, 0, time.UTC)
for name, body := range files {
p := filepath.Join(dl, name)
if err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil {
t.Fatal(err)
}
if err := os.WriteFile(p, []byte(body), 0o644); err != nil {
t.Fatal(err)
}
if err := os.Chtimes(p, old, old); err != nil {
t.Fatal(err)
}
}
return home, dl
}
// TestExcludeSetsFilesAside: an (exclude ...) in krino.conf applies to the
// directory, and the directory's own excludes apply too - by type, by name
// regex and by content - so those files get no actions from any rule and
// are reported as excluded, with the form that matched.
func TestExcludeSetsFilesAside(t *testing.T) {
h, _ := excludeTree(t, map[string]string{
"a.iso": "disk image",
"draft-1.pdf": "%PDF draft",
"secret.txt": "this is poufne material",
"keep.txt": "ordinary notes",
})
main := writeConfig(t, h, "(include \"dl\")\n(exclude (type iso))\n", map[string]string{"dl": `
(path "~/dl")
(exclude (name "^draft"))
(exclude (type txt) (content "poufne"))
(rule "all" (move "Out"))
`})
e, errs := Load(main)
if len(errs) > 0 {
t.Fatal(errs)
}
dp, err := e.Plan(context.Background(), e.Dirs[0], plan.NewClaims())
if err != nil {
t.Fatal(err)
}
want := map[string]string{
"a.iso": "(exclude (type iso))",
"draft-1.pdf": `(exclude (name "^draft"))`,
"secret.txt": `(exclude (type txt) (content "poufne"))`,
"keep.txt": "",
}
for _, fm := range dp.Result.Matched {
w, ok := want[fm.File.Rel]
if !ok {
t.Errorf("unexpected matched file %s", fm.File.Rel)
continue
}
if fm.Excluded != w {
t.Errorf("%s: Excluded = %q, want %q", fm.File.Rel, fm.Excluded, w)
}
if w != "" && len(fm.Rules) != 0 {
t.Errorf("%s: excluded but matched rules %v", fm.File.Rel, fm.Rules)
}
}
if len(dp.Result.Matched) != 4 || len(dp.Result.Unmatched) != 0 {
t.Errorf("matched %d, unmatched %d; want every file matched (3 excluded, 1 by the rule)", len(dp.Result.Matched), len(dp.Result.Unmatched))
}
for _, c := range dp.Chains {
if acting := len(c.Steps) > 0; acting != (c.File.Rel == "keep.txt") {
t.Errorf("%s: steps %+v", c.File.Rel, c.Steps)
}
}
}
// TestExcludeNeedsEveryCondition: within one form, every condition must
// hold, as in when.
func TestExcludeNeedsEveryCondition(t *testing.T) {
h, _ := excludeTree(t, map[string]string{"draft.txt": "x", "draft.pdf": "%PDF x"})
main := writeConfig(t, h, `(include "dl")`, map[string]string{"dl": `
(path "~/dl")
(exclude (type pdf) (name "^draft"))
(rule "all" (move "Out"))
`})
e, errs := Load(main)
if len(errs) > 0 {
t.Fatal(errs)
}
r, err := e.Match(context.Background(), e.Dirs[0])
if err != nil {
t.Fatal(err)
}
for _, fm := range r.Matched {
if excluded := fm.Excluded != ""; excluded != (fm.File.Rel == "draft.pdf") {
t.Errorf("%s: Excluded = %q", fm.File.Rel, fm.Excluded)
}
}
}
// TestExcludeContentAndRuleContentKeepTheirOwnSettings: an exclude reading
// content under the directory's settings first must not change how a rule
// with different case/fold settings sees the same text.
func TestExcludeContentAndRuleContentKeepTheirOwnSettings(t *testing.T) {
h, _ := excludeTree(t, map[string]string{"a.txt": "Invoice ACME"})
main := writeConfig(t, h, `(include "dl")`, map[string]string{"dl": `
(path "~/dl")
(exclude (content "never present"))
(rule "strict" (case strict) (when (content "ACME")) (move "Out"))
`})
e, errs := Load(main)
if len(errs) > 0 {
t.Fatal(errs)
}
r, err := e.Match(context.Background(), e.Dirs[0])
if err != nil {
t.Fatal(err)
}
if len(r.Matched) != 1 || len(r.Matched[0].Rules) != 1 {
t.Fatalf("a.txt should match the strict content rule after the exclude read its text: %+v", r.Matched)
}
}
// TestLoadReportsBadExcludeOnce: a condition error inside a krino.conf
// exclude is reported once, not once per directory.
func TestLoadReportsBadExcludeOnce(t *testing.T) {
h := sandbox(t)
main := writeConfig(t, h, "(include \"a\" \"b\")\n(exclude (size big))\n", map[string]string{
"a": "(path \"/tmp\")", "b": "(path \"/tmp\")",
})
_, errs := Load(main)
if len(errs) != 1 || !strings.Contains(errs[0].Error(), "size") {
t.Errorf("errs = %v, want exactly one error about size", errs)
}
}
// TestMaxSizeSkipsTooBig: a directory's max-size skips larger files before
// any rule, as too big.
func TestMaxSizeSkipsTooBig(t *testing.T) {
h, _ := excludeTree(t, map[string]string{"small.txt": "x", "big.txt": strings.Repeat("x", 2048)})
main := writeConfig(t, h, "(include \"dl\")\n(defaults (max-size 1K))\n", map[string]string{"dl": `
(path "~/dl")
(rule "all" (move "Out"))
`})
e, errs := Load(main)
if len(errs) > 0 {
t.Fatal(errs)
}
r, err := e.Match(context.Background(), e.Dirs[0])
if err != nil {
t.Fatal(err)
}
if len(r.Skipped) != 1 || r.Skipped[0].Rel != "big.txt" || r.Skipped[0].Reason != scan.TooBig {
t.Errorf("skipped = %+v, want big.txt too big", r.Skipped)
}
if len(r.Matched) != 1 || r.Matched[0].File.Rel != "small.txt" {
t.Errorf("matched = %+v, want small.txt", r.Matched)
}
}
// TestExplainReportsExclusionAndSize: explain names the exclude that sets a
// file aside, traces every exclude, and says a file is too big.
func TestExplainReportsExclusionAndSize(t *testing.T) {
h, dl := excludeTree(t, map[string]string{"a.iso": "disk", "big.txt": strings.Repeat("x", 2048)})
main := writeConfig(t, h, "(include \"dl\")\n(exclude (type iso))\n", map[string]string{"dl": `
(path "~/dl")
(max-size 1K)
(exclude (name "^nothing"))
(rule "all" (move "Out"))
`})
e, errs := Load(main)
if len(errs) > 0 {
t.Fatal(errs)
}
x, err := e.Explain(context.Background(), filepath.Join(dl, "a.iso"))
if err != nil {
t.Fatal(err)
}
if x.Excluded != "(exclude (type iso))" {
t.Errorf("Excluded = %q", x.Excluded)
}
if len(x.Excludes) != 2 || !x.Excludes[0].Match || x.Excludes[1].Match || x.Excludes[0].Trace == nil {
t.Errorf("Excludes = %+v, want the global one matching, the directory's one not", x.Excludes)
}
big, err := e.Explain(context.Background(), filepath.Join(dl, "big.txt"))
if err != nil {
t.Fatal(err)
}
if big.Skip != "too big" {
t.Errorf("Skip = %q, want too big", big.Skip)
}
}
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