diff options
Diffstat (limited to 'db_test.go')
| -rw-r--r-- | db_test.go | 48 |
1 files changed, 48 insertions, 0 deletions
@@ -85,6 +85,46 @@ func TestOpen_Wait(t *testing.T) { assert(t, time.Since(start) > 100*time.Millisecond, "") } +// Ensure that opening a database does not increase its size. +// https://github.com/boltdb/bolt/issues/291 +func TestOpen_Size(t *testing.T) { + // Open a data file. + db := NewTestDB() + path := db.Path() + defer db.Close() + + // Insert until we get above the minimum 4MB size. + ok(t, db.Update(func(tx *bolt.Tx) error { + b, _ := tx.CreateBucketIfNotExists([]byte("data")) + for i := 0; i < 10000; i++ { + ok(t, b.Put([]byte(fmt.Sprintf("%04d", i)), make([]byte, 1000))) + } + return nil + })) + + // Close database and grab the size. + db.DB.Close() + sz := fileSize(path) + if sz == 0 { + t.Fatalf("unexpected new file size: %d", sz) + } + + // Reopen database, update, and check size again. + db0, err := bolt.Open(path, 0666, nil) + ok(t, err) + ok(t, db0.Update(func(tx *bolt.Tx) error { return tx.Bucket([]byte("data")).Put([]byte{0}, []byte{0}) })) + ok(t, db0.Close()) + newSz := fileSize(path) + if newSz == 0 { + t.Fatalf("unexpected new file size: %d", newSz) + } + + // Compare the original size with the new size. + if sz != newSz { + t.Fatalf("unexpected file growth: %d => %d", sz, newSz) + } +} + // Ensure that a re-opened database is consistent. func TestOpen_Check(t *testing.T) { path := tempfile() @@ -648,3 +688,11 @@ func trunc(b []byte, length int) []byte { func truncDuration(d time.Duration) string { return regexp.MustCompile(`^(\d+)(\.\d+)`).ReplaceAllString(d.String(), "$1") } + +func fileSize(path string) int64 { + fi, err := os.Stat(path) + if err != nil { + return 0 + } + return fi.Size() +} |