diff options
Diffstat (limited to 'internal/dup/dup_test.go')
| -rw-r--r-- | internal/dup/dup_test.go | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/internal/dup/dup_test.go b/internal/dup/dup_test.go index fb4e64d..5d2621c 100644 --- a/internal/dup/dup_test.go +++ b/internal/dup/dup_test.go @@ -262,6 +262,29 @@ func TestLookupFailsWhenSubjectUnreadable(t *testing.T) { } } +// TestSameContentEqualSizeDifferentContent: two files of identical size but +// different bytes must not be reported as the same content — the partial +// hash (not just the size check) has to separate them. +func TestSameContentEqualSizeDifferentContent(t *testing.T) { + d := t.TempDir() + a := filepath.Join(d, "a.bin") + b := filepath.Join(d, "b.bin") + one := []byte("acme-invoice-01") + two := []byte("acme-invoice-02") + if len(one) != len(two) { + t.Fatal("fixture bug: files must be the same size") + } + if err := os.WriteFile(a, one, 0o644); err != nil { + t.Fatal(err) + } + if err := os.WriteFile(b, two, 0o644); err != nil { + t.Fatal(err) + } + if ok, err := SameContent(a, b); err != nil || ok { + t.Errorf("SameContent(a, b) = %v, %v; want false, nil", ok, err) + } +} + // fakeDirEntry is an fs.DirEntry whose Info() returns a canned result, for // exercising addEntry's Info()-failure handling directly (A3) — a real // filepath.WalkDir gives no hook to inject a stat failure deterministically |