63 lines
1.6 KiB
Go
63 lines
1.6 KiB
Go
// Copyright (C) 2018 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package db
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import (
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"testing"
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)
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func TestSmallIndex(t *testing.T) {
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db := newLowlevelMemory(t)
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idx := newSmallIndex(db, []byte{12, 34})
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// ID zero should be unallocated
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if val, ok := idx.Val(0); ok || val != nil {
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t.Fatal("Unexpected return for nonexistent ID 0")
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}
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// A new key should get ID zero
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if id, err := idx.ID([]byte("hello")); err != nil {
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t.Fatal(err)
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} else if id != 0 {
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t.Fatal("Expected 0, not", id)
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}
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// Looking up ID zero should work
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if val, ok := idx.Val(0); !ok || string(val) != "hello" {
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t.Fatalf(`Expected true, "hello", not %v, %q`, ok, val)
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}
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// Delete the key
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idx.Delete([]byte("hello"))
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// Next ID should be one
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if id, err := idx.ID([]byte("key2")); err != nil {
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t.Fatal(err)
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} else if id != 1 {
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t.Fatal("Expected 1, not", id)
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}
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// Now lets create a new index instance based on what's actually serialized to the database.
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idx = newSmallIndex(db, []byte{12, 34})
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// Status should be about the same as before.
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if val, ok := idx.Val(0); ok || val != nil {
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t.Fatal("Unexpected return for deleted ID 0")
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}
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if id, err := idx.ID([]byte("key2")); err != nil {
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t.Fatal(err)
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} else if id != 1 {
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t.Fatal("Expected 1, not", id)
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}
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// Setting "hello" again should get us ID 2, not 0 as it was originally.
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if id, err := idx.ID([]byte("hello")); err != nil {
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t.Fatal(err)
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} else if id != 2 {
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t.Fatal("Expected 2, not", id)
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}
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}
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