1var BufferPool = require('../lib/BufferPool');
 2require('should');
 3
 4describe('BufferPool', function() {  
 5  describe('#ctor', function() {
 6    it('allocates pool', function() {
 7      var db = new BufferPool(1000);
 8      db.size.should.eql(1000);
 9    });
10  });
11  describe('#get', function() {
12    it('grows the pool if necessary', function() {
13      var db = new BufferPool(1000);
14      var buf = db.get(2000);
15      db.size.should.be.above(1000);
16      db.used.should.eql(2000);
17      buf.length.should.eql(2000);
18    });
19    it('grows the pool after the first call, if necessary', function() {
20      var db = new BufferPool(1000);
21      var buf = db.get(1000);
22      db.used.should.eql(1000);
23      db.size.should.eql(1000);
24      buf.length.should.eql(1000);
25      var buf2 = db.get(1000);
26      db.used.should.eql(2000);
27      db.size.should.be.above(1000);
28      buf2.length.should.eql(1000);
29    });
30    it('grows the pool according to the growStrategy if necessary', function() {
31      var db = new BufferPool(1000, function(db, length) {
32        return db.size + 2345;
33      });
34      var buf = db.get(2000);
35      db.size.should.eql(3345);
36      buf.length.should.eql(2000);
37    });
38    it('doesnt grow the pool if theres enough room available', function() {
39      var db = new BufferPool(1000);
40      var buf = db.get(1000);
41      db.size.should.eql(1000);
42      buf.length.should.eql(1000);      
43    });
44  });
45  describe('#reset', function() {
46    it('shinks the pool', function() {
47      var db = new BufferPool(1000);
48      var buf = db.get(2000);
49      db.reset(true);
50      db.size.should.eql(1000);
51    });
52    it('shrinks the pool according to the shrinkStrategy', function() {
53      var db = new BufferPool(1000, function(db, length) {
54        return db.used + length;
55      }, function(db) {
56        return 0;
57      });
58      var buf = db.get(2000);
59      db.reset(true);
60      db.size.should.eql(0);
61    });
62  });
63});