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mathiasandClaude Opus 5.5 77e32de33c
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fix(graph,wiki): read the brain through brainfs (#157, slice 4) (#168)
graphsync, wiki inventory/index read through brainfs; brainfs refuses an in-brain file swapped in behind a symlink (os.SameFile). Gatekeeper round 2 PASS on d90ce66, CI run 9180 green.

Refs #157

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Mathias <mthbqv@gmail.com>
2026-10-05 04:53:34 +00:00

80 lines
3.6 KiB
Go

package wiki
import (
"fmt"
"os"
"path/filepath"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/mathiasbq/hyperguild/ingestion/internal/brainfs"
"github.com/mathiasbq/hyperguild/ingestion/internal/brainfs/brainfstest"
)
// hyperguild#157 slice 4: LoadInventory listed wiki/<type>/ with os.ReadDir
// and opened each .md by path, so a symlinked page put the target's title and
// aliases into the inventory (and the LLM prompts built from it), and a FIFO
// hung it. RebuildIndex read first sentences the same way.
func TestLoadInventoryRefusesSymlinksAndSurvivesSwapRaces(t *testing.T) {
brain := t.TempDir()
dir := filepath.Join(brain, "wiki", "concepts")
require.NoError(t, os.MkdirAll(dir, 0o755))
require.NoError(t, os.WriteFile(filepath.Join(dir, "ok.md"), []byte("---\ntitle: zqinside\n---\n"), 0o644))
require.NoError(t, os.Symlink(brainfstest.Outside(t), filepath.Join(dir, "leak.md")))
inBrain := brainfstest.WriteSentinelAt(t, filepath.Join(brain, "raw", "s.md"))
require.NoError(t, os.Symlink(filepath.Join("..", "..", "raw", "s.md"), filepath.Join(dir, "inlink.md")))
inv, err := LoadInventory(brain)
require.NoError(t, err)
got := fmt.Sprintf("%+v", inv)
assert.Contains(t, got, "zqinside", "positive control")
assert.NotContains(t, got, brainfstest.Sentinel)
assert.NotContains(t, got, "leak", "a symlinked page is not listed")
assert.NotContains(t, got, "inlink", "a page linked to another brain file is not listed")
p := filepath.Join(dir, "r.md")
read := func() string {
inv, _ := LoadInventory(brain)
return fmt.Sprintf("%+v", inv)
}
brainfstest.AssertNoLeak(t, p, "---\ntitle: zqinside\n---\n", 1500*time.Millisecond, read)
brainfstest.AssertNoLeakFrom(t, p, "---\ntitle: zqinside\n---\n", inBrain, 1500*time.Millisecond, read)
brainfstest.AssertNoHang(t, p, "---\ntitle: zqinside\n---\n", 1500*time.Millisecond, 6*time.Second, func() { _ = read() })
}
func TestLoadInventoryReturnsErrNotRegularForASymlinkedTypeDir(t *testing.T) {
brain := t.TempDir()
require.NoError(t, os.MkdirAll(filepath.Join(brain, "wiki"), 0o755))
require.NoError(t, os.MkdirAll(filepath.Join(brain, "raw"), 0o755))
require.NoError(t, os.WriteFile(filepath.Join(brain, "raw", "r.md"), []byte("---\ntitle: zqrawonly\n---\n"), 0o644))
require.NoError(t, os.Symlink(filepath.Join("..", "raw"), filepath.Join(brain, "wiki", "concepts")))
inv, err := LoadInventory(brain)
require.ErrorIs(t, err, brainfs.ErrNotRegular)
assert.NotContains(t, fmt.Sprintf("%+v", inv), "zqrawonly")
}
func TestRebuildIndexDoesNotReadAPageSwappedForASymlink(t *testing.T) {
brain := t.TempDir()
dir := filepath.Join(brain, "wiki", "concepts")
require.NoError(t, os.MkdirAll(dir, 0o755))
p := filepath.Join(dir, "r.md")
require.NoError(t, os.WriteFile(p, []byte("---\ntitle: R\n---\nzqinside sentence.\n"), 0o644))
require.NoError(t, RebuildIndex(brain, "2026-10-04"))
idx, err := os.ReadFile(filepath.Join(brain, "wiki", "index.md"))
require.NoError(t, err)
require.Contains(t, string(idx), "zqinside", "positive control: the summary is read")
read := func() string {
_ = RebuildIndex(brain, "2026-10-04")
b, _ := os.ReadFile(filepath.Join(brain, "wiki", "index.md"))
return string(b)
}
brainfstest.AssertNoLeak(t, p, "---\ntitle: R\n---\nzqinside sentence.\n", 1500*time.Millisecond, read)
inBrain := brainfstest.WriteSentinelAt(t, filepath.Join(brain, "raw", "s.md"))
brainfstest.AssertNoLeakFrom(t, p, "---\ntitle: R\n---\nzqinside sentence.\n", inBrain, 1500*time.Millisecond, read)
brainfstest.AssertNoHang(t, p, "---\ntitle: R\n---\nzqinside sentence.\n", 1500*time.Millisecond, 6*time.Second, func() { _ = read() })
}