Function TestMlock_DbCanGrow_Big

unix_test.go:49–75

Test crossing of 16MB (AllocSize) of db size

(t *testing.T)

// Test crossing of 16MB (AllocSize) of db size
func TestMlock_DbCanGrow_Big(t *testing.T) {
	if testing.Short() {
		t.Skip("skipping test in short mode")
	}

	// 32MB
	skipOnMemlockLimitBelow(t, 32*1024*1024)

	chunksBefore := 64
	chunksAfter := 64

	db := btesting.MustCreateDBWithOption(t, &bolt.Options{Mlock: true})

	for chunk := 0; chunk < chunksBefore; chunk++ {
		insertChunk(t, db, chunk)
	}
	dbSize := fileSize(db.Path())

	for chunk := 0; chunk < chunksAfter; chunk++ {
		insertChunk(t, db, chunksBefore+chunk)
	}
	newDbSize := fileSize(db.Path())

	if newDbSize <= dbSize {
		t.Errorf("db didn't grow: %v <= %v", newDbSize, dbSize)
	}
}

func insertChunk(t *testing.T, db *btesting.DB, chunkId int) {
	chunkSize := 1024