file_storage_unittest.py revision a1401311d1ab56c4ed0a474bd38c108f75cb0cd9
1# Copyright 2014 The Chromium Authors. All rights reserved. 2# Use of this source code is governed by a BSD-style license that can be 3# found in the LICENSE file. 4 5"""This unittest covers both file_storage and serialization modules.""" 6 7import os 8import tempfile 9import time 10import unittest 11 12from memory_inspector.core import memory_map 13from memory_inspector.core import native_heap 14from memory_inspector.core import stacktrace 15from memory_inspector.core import symbol 16from memory_inspector.data import file_storage 17 18 19class FileStorageTest(unittest.TestCase): 20 def setUp(self): 21 self._storage_path = tempfile.mkdtemp() 22 self._storage = file_storage.Storage(self._storage_path) 23 24 def tearDown(self): 25 os.removedirs(self._storage_path) 26 27 def testSettings(self): 28 settings_1 = { 'foo' : 1, 'bar' : 2 } 29 settings_2 = { 'foo' : 1, 'bar' : 2 } 30 self._storage.StoreSettings('one', settings_1) 31 self._storage.StoreSettings('two', settings_2) 32 self._DeepCompare(settings_1, self._storage.LoadSettings('one')) 33 self._DeepCompare(settings_2, self._storage.LoadSettings('two')) 34 self._storage.StoreSettings('one', {}) 35 self._storage.StoreSettings('two', {}) 36 37 def testArchives(self): 38 self._storage.OpenArchive('foo', create=True) 39 self._storage.OpenArchive('bar', create=True) 40 self._storage.OpenArchive('baz', create=True) 41 self._storage.DeleteArchive('bar') 42 self.assertTrue('foo' in self._storage.ListArchives()) 43 self.assertFalse('bar' in self._storage.ListArchives()) 44 self.assertTrue('baz' in self._storage.ListArchives()) 45 self._storage.DeleteArchive('foo') 46 self._storage.DeleteArchive('baz') 47 48 def testSnapshots(self): 49 archive = self._storage.OpenArchive('snapshots', create=True) 50 t1 = archive.StartNewSnapshot() 51 archive.StoreMemMaps(memory_map.Map()) 52 time.sleep(0.01) # Max snapshot resolution is in the order of usecs. 53 t2 = archive.StartNewSnapshot() 54 archive.StoreMemMaps(memory_map.Map()) 55 archive.StoreNativeHeap(native_heap.NativeHeap()) 56 self.assertIn(t1, archive.ListSnapshots()) 57 self.assertIn(t2, archive.ListSnapshots()) 58 self.assertTrue(archive.HasMemMaps(t1)) 59 self.assertFalse(archive.HasNativeHeap(t1)) 60 self.assertTrue(archive.HasMemMaps(t2)) 61 self.assertTrue(archive.HasNativeHeap(t2)) 62 self._storage.DeleteArchive('snapshots') 63 64 def testMmap(self): 65 archive = self._storage.OpenArchive('mmap', create=True) 66 timestamp = archive.StartNewSnapshot() 67 mmap = memory_map.Map() 68 map_entry1 = memory_map.MapEntry(4096, 8191, 'rw--', '/foo', 0) 69 map_entry2 = memory_map.MapEntry(65536, 81919, 'rw--', '/bar', 4096) 70 map_entry2.resident_pages = [5] 71 mmap.Add(map_entry1) 72 mmap.Add(map_entry2) 73 archive.StoreMemMaps(mmap) 74 mmap_deser = archive.LoadMemMaps(timestamp) 75 self._DeepCompare(mmap, mmap_deser) 76 self._storage.DeleteArchive('mmap') 77 78 def testNativeHeap(self): 79 archive = self._storage.OpenArchive('nheap', create=True) 80 timestamp = archive.StartNewSnapshot() 81 nh = native_heap.NativeHeap() 82 for i in xrange(1, 4): 83 stack_trace = stacktrace.Stacktrace() 84 frame = nh.GetStackFrame(i * 10 + 1) 85 frame.SetExecFileInfo('foo.so', 1) 86 stack_trace.Add(frame) 87 frame = nh.GetStackFrame(i * 10 + 2) 88 frame.SetExecFileInfo('bar.so', 2) 89 stack_trace.Add(frame) 90 nh.Add(native_heap.Allocation(i * 2, i * 3, stack_trace)) 91 archive.StoreNativeHeap(nh) 92 nh_deser = archive.LoadNativeHeap(timestamp) 93 self._DeepCompare(nh, nh_deser) 94 self._storage.DeleteArchive('nheap') 95 96 def testSymbols(self): 97 archive = self._storage.OpenArchive('symbols', create=True) 98 symbols = symbol.Symbols() 99 # Symbol db is global per archive, no need to StartNewSnapshot. 100 symbols.Add('foo.so', 1, symbol.Symbol('sym1', 'file1.c', 11)) 101 symbols.Add('bar.so', 2, symbol.Symbol('sym2', 'file2.c', 12)) 102 sym3 = symbol.Symbol('sym3', 'file2.c', 13) 103 sym3.AddSourceLineInfo('outer_file.c', 23) 104 symbols.Add('baz.so', 3, sym3) 105 archive.StoreSymbols(symbols) 106 symbols_deser = archive.LoadSymbols() 107 self._DeepCompare(symbols, symbols_deser) 108 self._storage.DeleteArchive('symbols') 109 110 def _DeepCompare(self, a, b, prefix=''): 111 """Recursively compares two objects (original and deserialized).""" 112 113 self.assertEqual(a is None, b is None) 114 if a is None: 115 return 116 117 _BASICTYPES = (int, basestring, float) 118 if isinstance(a, _BASICTYPES) and isinstance(b, _BASICTYPES): 119 return self.assertEqual(a, b, prefix) 120 121 self.assertEqual(type(a), type(b), prefix + ' type (%s vs %s' % ( 122 type(a), type(b))) 123 124 if isinstance(a, list): 125 self.assertEqual(len(a), len(b), prefix + ' len (%d vs %d)' % ( 126 len(a), len(b))) 127 for i in range(len(a)): 128 self._DeepCompare(a[i], b[i], prefix + '[%d]' % i) 129 return 130 131 if isinstance(a, dict): 132 self.assertEqual(a.keys(), b.keys(), prefix + ' keys (%s vs %s)' % ( 133 str(a.keys()), str(b.keys()))) 134 for k in a.iterkeys(): 135 self._DeepCompare(a[k], b[k], prefix + '.' + str(k)) 136 return 137 138 return self._DeepCompare(a.__dict__, b.__dict__, prefix)