-
Notifications
You must be signed in to change notification settings - Fork 2.3k
/
PageCacheAndDependenciesRule.java
92 lines (80 loc) · 2.87 KB
/
PageCacheAndDependenciesRule.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
/*
* Copyright (c) 2002-2017 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.test.rule;
import org.junit.rules.RuleChain;
import org.junit.rules.TestRule;
import org.junit.runner.Description;
import org.junit.runners.model.Statement;
import java.util.function.Supplier;
import org.neo4j.io.fs.FileSystemAbstraction;
import org.neo4j.io.pagecache.PageCache;
import org.neo4j.test.rule.fs.EphemeralFileSystemRule;
import org.neo4j.test.rule.fs.FileSystemRule;
/**
* Very often when you want a {@link PageCacheRule} you also want {@link TestDirectory} and some {@link FileSystemRule}.
* This is tedious to write and apply in the correct order in every test doing this. This rule collects
* this threesome into one rule for convenience.
*/
public class PageCacheAndDependenciesRule implements TestRule
{
private final RuleChain chain;
private final FileSystemRule<? extends FileSystemAbstraction> fs;
private final TestDirectory directory;
private final PageCacheRule pageCacheRule = new PageCacheRule();
public PageCacheAndDependenciesRule()
{
this( () -> new EphemeralFileSystemRule() );
}
/**
* @param fsSupplier as {@link Supplier} to make it clear that it is this class that owns the created
* {@link FileSystemRule} instance.
*/
public PageCacheAndDependenciesRule( Supplier<FileSystemRule<? extends FileSystemAbstraction>> fsSupplier )
{
this.fs = fsSupplier.get();
this.directory = TestDirectory.testDirectory( fs );
this.chain = RuleChain.outerRule( fs ).around( directory ).around( pageCacheRule );
}
@Override
public Statement apply( Statement base, Description description )
{
return chain.apply( base, description );
}
public FileSystemRule<? extends FileSystemAbstraction> fileSystemRule()
{
return fs;
}
public FileSystemAbstraction fileSystem()
{
return fs.get();
}
public TestDirectory directory()
{
return directory;
}
public PageCacheRule pageCacheRule()
{
return pageCacheRule;
}
public PageCache pageCache()
{
return pageCacheRule.getPageCache( fs );
}
}