krino: 0.0.5 — keyword cache, t and d in reviewv0.0.5

1 files changed, 24 insertions, 0 deletions

diff --git a/internal/extract/tools_test.go b/internal/extract/tools_test.go
index 4a03f1b..b481e8a 100644
--- a/internal/extract/tools_test.go
+++ b/internal/extract/tools_test.go
@@ -237,3 +237,27 @@ func TestMaxReadCapsToolOutput(t *testing.T) {
 		t.Fatalf("got %v, want ErrTooLarge (max-read 1024 should have capped a 200000-byte tool output)", err)
 	}
 }
+
+// TestFingerprintFollowsTools: the fingerprint changes when a tool is
+// installed or replaced, and not otherwise.
+func TestFingerprintFollowsTools(t *testing.T) {
+	bin := t.TempDir()
+	none := newWithPath(bin).Fingerprint()
+	if none != newWithPath(bin).Fingerprint() {
+		t.Fatal("fingerprint not stable")
+	}
+	tool := filepath.Join(bin, "pdftotext")
+	if err := os.WriteFile(tool, []byte("#!/bin/sh\n"), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	installed := newWithPath(bin).Fingerprint()
+	if installed == none {
+		t.Error("installing pdftotext did not change the fingerprint")
+	}
+	if err := os.WriteFile(tool, []byte("#!/bin/sh\nexit 0\n"), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if newWithPath(bin).Fingerprint() == installed {
+		t.Error("replacing pdftotext did not change the fingerprint")
+	}
+}