# # Copyright (C) 2016 The Android Open Source Project # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # from __future__ import print_function import unittest import common from blockimgdiff import (BlockImageDiff, EmptyImage, HeapItem, ImgdiffStats, Transfer) from rangelib import RangeSet class HealpItemTest(unittest.TestCase): class Item(object): def __init__(self, score): self.score = score def test_init(self): item1 = HeapItem(self.Item(15)) item2 = HeapItem(self.Item(20)) item3 = HeapItem(self.Item(15)) self.assertTrue(item1) self.assertTrue(item2) self.assertTrue(item3) self.assertNotEqual(item1, item2) self.assertEqual(item1, item3) # HeapItem uses negated scores. self.assertGreater(item1, item2) self.assertLessEqual(item1, item3) self.assertTrue(item1 <= item3) self.assertFalse(item2 >= item1) def test_clear(self): item = HeapItem(self.Item(15)) self.assertTrue(item) item.clear() self.assertFalse(item) class BlockImageDiffTest(unittest.TestCase): def test_GenerateDigraphOrder(self): """Make sure GenerateDigraph preserves the order. t0: <0-5> => <...> t1: <0-7> => <...> t2: <0-4> => <...> t3: <...> => <0-10> t0, t1 and t2 must go before t3, i.e. t3.goes_after = { t0:..., t1:..., t2:... }. But the order of t0-t2 must be preserved. """ src = EmptyImage() tgt = EmptyImage() block_image_diff = BlockImageDiff(tgt, src) transfers = block_image_diff.transfers t0 = Transfer("t1", "t1", RangeSet("10-15"), RangeSet("0-5"), "t1hash", "t1hash", "move", transfers) t1 = Transfer("t2", "t2", RangeSet("20-25"), RangeSet("0-7"), "t2hash", "t2hash", "move", transfers) t2 = Transfer("t3", "t3", RangeSet("30-35"), RangeSet("0-4"), "t3hash", "t3hash", "move", transfers) t3 = Transfer("t4", "t4", RangeSet("0-10"), RangeSet("40-50"), "t4hash", "t4hash", "move", transfers) block_image_diff.GenerateDigraph() t3_goes_after_copy = t3.goes_after.copy() # Elements in the set must be in the transfer evaluation order. elements = list(t3_goes_after_copy) self.assertEqual(t0, elements[0]) self.assertEqual(t1, elements[1]) self.assertEqual(t2, elements[2]) # Now switch the order of t0, t1 and t2. transfers[0], transfers[1], transfers[2] = ( transfers[2], transfers[0], transfers[1]) t3.goes_after.clear() t3.goes_before.clear() block_image_diff.GenerateDigraph() # The goes_after must be different from last run. self.assertNotEqual(t3_goes_after_copy, t3.goes_after) # Assert that each element must agree with the transfer order. elements = list(t3.goes_after) self.assertEqual(t2, elements[0]) self.assertEqual(t0, elements[1]) self.assertEqual(t1, elements[2]) def test_ReviseStashSize(self): """ReviseStashSize should convert transfers to 'new' commands as needed. t1: diff <20-29> => <11-15> t2: diff <11-15> => <20-29> """ src = EmptyImage() tgt = EmptyImage() block_image_diff = BlockImageDiff(tgt, src, version=3) transfers = block_image_diff.transfers Transfer("t1", "t1", RangeSet("11-15"), RangeSet("20-29"), "t1hash", "t1hash", "diff", transfers) Transfer("t2", "t2", RangeSet("20-29"), RangeSet("11-15"), "t2hash", "t2hash", "diff", transfers) block_image_diff.GenerateDigraph() block_image_diff.FindVertexSequence() block_image_diff.ReverseBackwardEdges() # Sufficient cache to stash 5 blocks (size * 0.8 >= 5). common.OPTIONS.cache_size = 7 * 4096 self.assertEqual(0, block_image_diff.ReviseStashSize()) # Insufficient cache to stash 5 blocks (size * 0.8 < 5). common.OPTIONS.cache_size = 6 * 4096 self.assertEqual(10, block_image_diff.ReviseStashSize()) def test_ReviseStashSize_bug_33687949(self): """ReviseStashSize() should "free" the used stash _after_ the command. t1: diff <1-5> => <11-15> t2: diff <11-15> => <21-25> t3: diff <11-15 30-39> => <1-5 30-39> For transfer t3, the used stash "11-15" should not be freed until the command finishes. Assume the allowed cache size is 12-block, it should convert the command to 'new' due to insufficient cache (12 < 5 + 10). """ src = EmptyImage() tgt = EmptyImage() block_image_diff = BlockImageDiff(tgt, src, version=3) transfers = block_image_diff.transfers t1 = Transfer("t1", "t1", RangeSet("11-15"), RangeSet("1-5"), "t1hash", "t1hash", "diff", transfers) t2 = Transfer("t2", "t2", RangeSet("21-25"), RangeSet("11-15"), "t2hash", "t2hash", "diff", transfers) t3 = Transfer("t3", "t3", RangeSet("1-5 30-39"), RangeSet("11-15 30-39"), "t3hash", "t3hash", "diff", transfers) block_image_diff.GenerateDigraph() # Instead of calling FindVertexSequence() and ReverseBackwardEdges(), we # just set up the stash_before and use_stash manually. Otherwise it will # reorder the transfer, which makes testing ReviseStashSize() harder. t1.stash_before.append((0, RangeSet("11-15"))) t2.use_stash.append((0, RangeSet("11-15"))) t1.stash_before.append((1, RangeSet("11-15"))) t3.use_stash.append((1, RangeSet("11-15"))) # Insufficient cache to stash 15 blocks (size * 0.8 < 15). common.OPTIONS.cache_size = 15 * 4096 self.assertEqual(15, block_image_diff.ReviseStashSize()) def test_FileTypeSupportedByImgdiff(self): self.assertTrue( BlockImageDiff.FileTypeSupportedByImgdiff( "/system/priv-app/Settings/Settings.apk")) self.assertTrue( BlockImageDiff.FileTypeSupportedByImgdiff( "/system/framework/am.jar")) self.assertTrue( BlockImageDiff.FileTypeSupportedByImgdiff( "/system/etc/security/otacerts.zip")) self.assertFalse( BlockImageDiff.FileTypeSupportedByImgdiff( "/system/framework/arm/boot.oat")) self.assertFalse( BlockImageDiff.FileTypeSupportedByImgdiff( "/system/priv-app/notanapk")) def test_CanUseImgdiff(self): block_image_diff = BlockImageDiff(EmptyImage(), EmptyImage()) self.assertTrue( block_image_diff.CanUseImgdiff( "/system/app/app1.apk", RangeSet("10-15"), RangeSet("0-5"))) self.assertTrue( block_image_diff.CanUseImgdiff( "/vendor/app/app2.apk", RangeSet("20 25"), RangeSet("30-31"), True)) self.assertDictEqual( { ImgdiffStats.USED_IMGDIFF: {"/system/app/app1.apk"}, ImgdiffStats.USED_IMGDIFF_LARGE_APK: {"/vendor/app/app2.apk"}, }, block_image_diff.imgdiff_stats.stats) def test_CanUseImgdiff_ineligible(self): # Disabled by caller. block_image_diff = BlockImageDiff(EmptyImage(), EmptyImage(), disable_imgdiff=True) self.assertFalse( block_image_diff.CanUseImgdiff( "/system/app/app1.apk", RangeSet("10-15"), RangeSet("0-5"))) # Unsupported file type. block_image_diff = BlockImageDiff(EmptyImage(), EmptyImage()) self.assertFalse( block_image_diff.CanUseImgdiff( "/system/bin/gzip", RangeSet("10-15"), RangeSet("0-5"))) # At least one of the ranges is in non-monotonic order. self.assertFalse( block_image_diff.CanUseImgdiff( "/system/app/app2.apk", RangeSet("10-15"), RangeSet("15-20 30 10-14"))) # At least one of the ranges is incomplete. src_ranges = RangeSet("0-5") src_ranges.extra['incomplete'] = True self.assertFalse( block_image_diff.CanUseImgdiff( "/vendor/app/app4.apk", RangeSet("10-15"), src_ranges)) # The stats are correctly logged. self.assertDictEqual( { ImgdiffStats.SKIPPED_NONMONOTONIC: {'/system/app/app2.apk'}, ImgdiffStats.SKIPPED_INCOMPLETE: {'/vendor/app/app4.apk'}, }, block_image_diff.imgdiff_stats.stats) class ImgdiffStatsTest(unittest.TestCase): def test_Log(self): imgdiff_stats = ImgdiffStats() imgdiff_stats.Log("/system/app/app2.apk", ImgdiffStats.USED_IMGDIFF) self.assertDictEqual( { ImgdiffStats.USED_IMGDIFF: {'/system/app/app2.apk'}, }, imgdiff_stats.stats) def test_Log_invalidInputs(self): imgdiff_stats = ImgdiffStats() self.assertRaises(AssertionError, imgdiff_stats.Log, "/system/bin/gzip", ImgdiffStats.USED_IMGDIFF) self.assertRaises(AssertionError, imgdiff_stats.Log, "/system/app/app1.apk", "invalid reason")