1//  Copyright (c) 2017 Couchbase, Inc.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// 		http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package vellum
16
17import "testing"
18
19// FIXME add tests for MRU
20
21func TestRegistry(t *testing.T) {
22	p := &builderNodePool{}
23	r := newRegistry(p, 10, 1)
24
25	n1 := &builderNode{
26		trans: []transition{
27			{
28				in:   'a',
29				addr: 1,
30			},
31			{
32				in:   'b',
33				addr: 2,
34			},
35			{
36				in:   'c',
37				addr: 3,
38			},
39		},
40	}
41
42	// first look, doesn't exist
43	found, _, cell := r.entry(n1)
44	if found {
45		t.Errorf("expected empty registry to not have equivalent")
46	}
47
48	cell.addr = 276
49
50	// second look, does
51	var nowAddr int
52	found, nowAddr, _ = r.entry(n1)
53	if !found {
54		t.Errorf("expected to find equivalent after registering it")
55	}
56	if nowAddr != 276 {
57		t.Errorf("expected to get addr 276, got %d", nowAddr)
58	}
59}
60