From 394d117b90ffb64c87adfc8c2436b57007840c2b Mon Sep 17 00:00:00 2001
From: Lukasz Kasprzak <lukas@labunix.xyz>
Date: Mon, 14 Sep 2026 22:23:42 +0200
Subject: plan 10: a format with no text is no match, not unreadable

---
 internal/engine/exclude_test.go | 42 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

(limited to 'internal/engine/exclude_test.go')

diff --git a/internal/engine/exclude_test.go b/internal/engine/exclude_test.go
index 87fa16c..4bb1512 100644
--- a/internal/engine/exclude_test.go
+++ b/internal/engine/exclude_test.go
@@ -260,3 +260,45 @@ func TestLoadChecksMainExcludesWithoutDirectories(t *testing.T) {
 		t.Error("a broken krino.conf exclude was not reported")
 	}
 }
+
+// TestNoTextFormatIsNoMatch: a file whose format has no text cannot contain
+// a keyword, so a content exclude without a type does not set it aside, and
+// no "content unreadable" warning is raised - while a real read failure (over
+// max-read) still fails closed (re-review N2, Łukasz's decision).
+func TestNoTextFormatIsNoMatch(t *testing.T) {
+	big := "confidential " + strings.Repeat("x", 2048)
+	h, dl := excludeTree(t, map[string]string{"photo.jpg": "\xff\xd8\xff\x00\x01binary", "big.txt": big})
+	main := writeConfig(t, h, `(include "dl")`, map[string]string{"dl": `
+(path "~/dl")
+(max-read 1K)
+(exclude (content "confidential"))
+(rule "pics" (when (type jpg)) (move "Pictures"))
+`})
+	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 {
+		switch fm.File.Rel {
+		case "photo.jpg":
+			if fm.Excluded != "" || len(fm.Rules) != 1 || len(fm.Warnings) != 0 {
+				t.Errorf("photo.jpg: Excluded %q, rules %d, warnings %v; want the pics rule and no warning", fm.Excluded, len(fm.Rules), fm.Warnings)
+			}
+		case "big.txt":
+			if !strings.HasSuffix(fm.Excluded, "(content unreadable)") {
+				t.Errorf("big.txt: Excluded %q; a real read failure must still fail closed", fm.Excluded)
+			}
+		}
+	}
+	x, err := e.Explain(context.Background(), filepath.Join(dl, "photo.jpg"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if x.Excluded != "" {
+		t.Errorf("explain: Excluded %q, want none", x.Excluded)
+	}
+}
-- 
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