Reland of V2 of //tools/binary_size rewrite (diffs).

tools/binary_size/explain_binary_size_delta_unittest.py

-#!/usr/bin/env python
-# Copyright 2014 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-"""Check that explain_binary_size_delta seems to work."""
-
-import cStringIO
-import sys
-import unittest
-
-import explain_binary_size_delta
-
-
-class ExplainBinarySizeDeltaTest(unittest.TestCase):
-
-  def testCompare(self):
-    # List entries have form:
-    # symbol_name, symbol_type, symbol_size, file_path, memory_address
-    symbol_list1 = (
-      # File with one symbol, left as-is.
-      ( 'unchanged', 't', 1000, '/file_unchanged', 0x1 ),
-      # File with one symbol, changed.
-      ( 'changed', 't', 1000, '/file_all_changed', 0x2 ),
-      # File with one symbol, deleted.
-      ( 'removed', 't', 1000, '/file_all_deleted', 0x3 ),
-      # File with two symbols, one unchanged, one changed, same bucket
-      ( 'unchanged', 't', 1000, '/file_pair_unchanged_changed', 0x4 ),
-      ( 'changed', 't', 1000, '/file_pair_unchanged_changed', 0x5 ),
-      # File with two symbols, one unchanged, one deleted, same bucket
-      ( 'unchanged', 't', 1000, '/file_pair_unchanged_removed', 0x6 ),
-      ( 'removed', 't', 1000, '/file_pair_unchanged_removed', 0x7 ),
-      # File with two symbols, one unchanged, one added, same bucket
-      ( 'unchanged', 't', 1000, '/file_pair_unchanged_added', 0x8 ),
-      # File with two symbols, one unchanged, one changed, different bucket
-      ( 'unchanged', 't', 1000, '/file_pair_unchanged_diffbuck_changed', 0x9 ),
-      ( 'changed', '@', 1000, '/file_pair_unchanged_diffbuck_changed', 0xa ),
-      # File with two symbols, one unchanged, one deleted, different bucket
-      ( 'unchanged', 't', 1000, '/file_pair_unchanged_diffbuck_removed', 0xb ),
-      ( 'removed', '@', 1000, '/file_pair_unchanged_diffbuck_removed', 0xc ),
-      # File with two symbols, one unchanged, one added, different bucket
-      ( 'unchanged', 't', 1000, '/file_pair_unchanged_diffbuck_added', 0xd ),
-      # File with four symbols, one added, one removed,
-      # one changed, one unchanged
-      ( 'size_changed', 't', 1000, '/file_tetra', 0xe ),
-      ( 'removed', 't', 1000, '/file_tetra', 0xf ),
-      ( 'unchanged', 't', 1000, '/file_tetra', 0x10 ),
-    )
-
-    symbol_list2 = (
-      # File with one symbol, left as-is.
-      ( 'unchanged', 't', 1000, '/file_unchanged', 0x1 ),
-      # File with one symbol, changed.
-      ( 'changed', 't', 2000, '/file_all_changed', 0x2 ),
-      # File with two symbols, one unchanged, one changed, same bucket
-      ( 'unchanged', 't', 1000, '/file_pair_unchanged_changed', 0x3 ),
-      ( 'changed', 't', 2000, '/file_pair_unchanged_changed', 0x4 ),
-      # File with two symbols, one unchanged, one deleted, same bucket
-      ( 'unchanged', 't', 1000, '/file_pair_unchanged_removed', 0x5 ),
-      # File with two symbols, one unchanged, one added, same bucket
-      ( 'unchanged', 't', 1000, '/file_pair_unchanged_added', 0x6 ),
-      ( 'added', 't', 1000, '/file_pair_unchanged_added', 0x7 ),
-      # File with two symbols, one unchanged, one changed, different bucket
-      ( 'unchanged', 't', 1000, '/file_pair_unchanged_diffbuck_changed', 0x8 ),
-      ( 'changed', '@', 2000, '/file_pair_unchanged_diffbuck_changed', 0x9 ),
-      # File with two symbols, one unchanged, one deleted, different bucket
-      ( 'unchanged', 't', 1000, '/file_pair_unchanged_diffbuck_removed', 0xa ),
-      # File with two symbols, one unchanged, one added, different bucket
-      ( 'unchanged', 't', 1000, '/file_pair_unchanged_diffbuck_added', 0xb ),
-      ( 'added', '@', 1000, '/file_pair_unchanged_diffbuck_added', 0xc ),
-      # File with four symbols, one added, one removed,
-      # one changed, one unchanged
-      ( 'size_changed', 't', 2000, '/file_tetra', 0xd ),
-      ( 'unchanged', 't', 1000, '/file_tetra', 0xe ),
-      ( 'added', 't', 1000, '/file_tetra', 0xf ),
-      # New file with one symbol added
-      ( 'added', 't', 1000, '/file_new', 0x10 ),
-    )
-
-    # Here we go
-    (added, removed, changed, unchanged) = \
-        explain_binary_size_delta.Compare(symbol_list1, symbol_list2)
-
-    def delta(file_path, symbol_type, symbol_name, old_size, new_size):
-      delta_info = explain_binary_size_delta.DeltaInfo(
-        file_path, symbol_type, symbol_name, False)
-      delta_info.old_size = old_size
-      delta_info.new_size = new_size
-      return delta_info
-
-    # File with one symbol, left as-is.
-    assert delta('/file_unchanged', 't', 'unchanged', 1000, 1000) in unchanged
-    # File with one symbol, changed.
-    assert delta('/file_all_changed', 't', 'changed', 1000, 2000) in changed
-    # File with one symbol, deleted.
-    assert delta('/file_all_deleted', 't', 'removed', 1000, None) in removed
-    # New file with one symbol added
-    assert delta('/file_new', 't', 'added', None, 1000) in added
-    # File with two symbols, one unchanged, one changed, same bucket
-    assert delta('/file_pair_unchanged_changed',
-            't', 'unchanged', 1000, 1000) in unchanged
-    assert delta('/file_pair_unchanged_changed',
-            't', 'changed', 1000, 2000) in changed
-    # File with two symbols, one unchanged, one removed, same bucket
-    assert delta('/file_pair_unchanged_removed',
-            't', 'unchanged', 1000, 1000) in unchanged
-    assert delta('/file_pair_unchanged_removed',
-            't', 'removed', 1000, None) in removed
-    # File with two symbols, one unchanged, one added, same bucket
-    assert delta('/file_pair_unchanged_added',
-            't', 'unchanged', 1000, 1000) in unchanged
-    assert delta('/file_pair_unchanged_added',
-            't', 'added', None, 1000) in added
-    # File with two symbols, one unchanged, one changed, different bucket
-    assert delta('/file_pair_unchanged_diffbuck_changed',
-            't', 'unchanged', 1000, 1000) in unchanged
-    assert delta('/file_pair_unchanged_diffbuck_changed',
-            '@', 'changed', 1000, 2000) in changed
-    # File with two symbols, one unchanged, one removed, different bucket
-    assert delta('/file_pair_unchanged_diffbuck_removed',
-            't', 'unchanged', 1000, 1000) in unchanged
-    assert delta('/file_pair_unchanged_diffbuck_removed',
-            '@', 'removed', 1000, None) in removed
-    # File with two symbols, one unchanged, one added, different bucket
-    assert delta('/file_pair_unchanged_diffbuck_added',
-            't', 'unchanged', 1000, 1000) in unchanged
-    assert delta('/file_pair_unchanged_diffbuck_added',
-            '@', 'added', None, 1000) in added
-    # File with four symbols, one added, one removed, one changed, one unchanged
-    assert delta('/file_tetra', 't', 'size_changed', 1000, 2000) in changed
-    assert delta('/file_tetra', 't', 'unchanged', 1000, 1000) in unchanged
-    assert delta('/file_tetra', 't', 'added', None, 1000) in added
-    assert delta('/file_tetra', 't', 'removed', 1000, None) in removed
-
-    # Now check final stats.
-    orig_stdout = sys.stdout
-    output_collector = cStringIO.StringIO()
-    sys.stdout = output_collector
-    try:
-      explain_binary_size_delta.CrunchStats(added, removed, changed,
-                                            unchanged, True, True)
-    finally:
-      sys.stdout = orig_stdout
-    result = output_collector.getvalue()
-
-    expected_output = """\
-Total change: +4000 bytes
-=========================
-  4 added, totalling +4000 bytes across 4 sources
-  4 removed, totalling -4000 bytes across 4 sources
-  4 grown, for a net change of +4000 bytes \
-(4000 bytes before, 8000 bytes after) across 4 sources
-  8 unchanged, totalling 8000 bytes
-Source stats:
-  11 sources encountered.
-  1 completely new.
-  1 removed completely.
-  8 partially changed.
-  1 completely unchanged.
-Per-source Analysis:
-
---------------------------------------------------
- +1000 - Source: /file_new - (gained 1000, lost 0)
---------------------------------------------------
-  New symbols:
-      +1000: added type=t, size=1000 bytes
-
----------------------------------------------------------------------
- +1000 - Source: /file_pair_unchanged_changed - (gained 1000, lost 0)
----------------------------------------------------------------------
-  Grown symbols:
-      +1000: changed type=t, (was 1000 bytes, now 2000 bytes)
-
-----------------------------------------------------------------------------
- +1000 - Source: /file_pair_unchanged_diffbuck_added - (gained 1000, lost 0)
-----------------------------------------------------------------------------
-  New symbols:
-      +1000: added type=@, size=1000 bytes
-
--------------------------------------------------------------------
- +1000 - Source: /file_pair_unchanged_added - (gained 1000, lost 0)
--------------------------------------------------------------------
-  New symbols:
-      +1000: added type=t, size=1000 bytes
-
-------------------------------------------------------------------------------
- +1000 - Source: /file_pair_unchanged_diffbuck_changed - (gained 1000, lost 0)
-------------------------------------------------------------------------------
-  Grown symbols:
-      +1000: changed type=@, (was 1000 bytes, now 2000 bytes)
-
-----------------------------------------------------------
- +1000 - Source: /file_all_changed - (gained 1000, lost 0)
-----------------------------------------------------------
-  Grown symbols:
-      +1000: changed type=t, (was 1000 bytes, now 2000 bytes)
-
--------------------------------------------------------
- +1000 - Source: /file_tetra - (gained 2000, lost 1000)
--------------------------------------------------------
-  New symbols:
-      +1000: added type=t, size=1000 bytes
-  Removed symbols:
-      -1000: removed type=t, size=1000 bytes
-  Grown symbols:
-      +1000: size_changed type=t, (was 1000 bytes, now 2000 bytes)
-
-------------------------------------------------------------------------------
- -1000 - Source: /file_pair_unchanged_diffbuck_removed - (gained 0, lost 1000)
-------------------------------------------------------------------------------
-  Removed symbols:
-      -1000: removed type=@, size=1000 bytes
-
-----------------------------------------------------------
- -1000 - Source: /file_all_deleted - (gained 0, lost 1000)
-----------------------------------------------------------
-  Removed symbols:
-      -1000: removed type=t, size=1000 bytes
-
----------------------------------------------------------------------
- -1000 - Source: /file_pair_unchanged_removed - (gained 0, lost 1000)
----------------------------------------------------------------------
-  Removed symbols:
-      -1000: removed type=t, size=1000 bytes
-"""
-
-    self.maxDiff = None
-    self.assertMultiLineEqual(expected_output, result)
-
-
-  def testCompareStringEntries(self):
-    # List entries have form:
-    # symbol_name, symbol_type, symbol_size, file_path, memory_address
-    symbol_list1 = (
-      # File with one string.
-      ( '.L.str107', 'r', 8, '/file_with_strs', 0x1 ),
-    )
-
-    symbol_list2 = (
-      # Two files with one string each, same name.
-      ( '.L.str107', 'r', 8, '/file_with_strs', 0x1 ),
-      ( '.L.str107', 'r', 7, '/other_file_with_strs', 0x2 ),
-    )
-
-    # Here we go
-    (added, removed, changed, unchanged) = \
-        explain_binary_size_delta.Compare(symbol_list1, symbol_list2)
-
-
-    # Now check final stats.
-    orig_stdout = sys.stdout
-    output_collector = cStringIO.StringIO()
-    sys.stdout = output_collector
-    try:
-      explain_binary_size_delta.CrunchStats(added, removed, changed,
-                                            unchanged, True, True)
-    finally:
-      sys.stdout = orig_stdout
-    result = output_collector.getvalue()
-
-    expected_output = """\
-Total change: +7 bytes
-======================
-  1 added, totalling +7 bytes across 1 sources
-  1 unchanged, totalling 8 bytes
-Source stats:
-  2 sources encountered.
-  1 completely new.
-  0 removed completely.
-  0 partially changed.
-  1 completely unchanged.
-Per-source Analysis:
-
---------------------------------------------------------
- +7 - Source: /other_file_with_strs - (gained 7, lost 0)
---------------------------------------------------------
-  New symbols:
-         +7: .L.str107 type=r, size=7 bytes
-"""
-
-    self.maxDiff = None
-    self.assertMultiLineEqual(expected_output, result)
-
-  def testCompareStringEntriesWithNoFile(self):
-    # List entries have form:
-    # symbol_name, symbol_type, symbol_size, file_path, memory_address
-    symbol_list1 = (
-      ( '.L.str104', 'r', 21, '??', 0x1 ), # Will change size.
-      ( '.L.str105', 'r', 17, '??', 0x2 ), # Same.
-      ( '.L.str106', 'r', 13, '??', 0x3 ), # Will be removed.
-      ( '.L.str106', 'r', 3, '??', 0x4 ), # Same.
-      ( '.L.str106', 'r', 3, '??', 0x5 ), # Will be removed.
-      ( '.L.str107', 'r', 8, '??', 0x6 ), # Will be removed (other sizes).
-    )
-
-    symbol_list2 = (
-      # Two files with one string each, same name.
-      ( '.L.str104', 'r', 19, '??', 0x1 ), # Changed.
-      ( '.L.str105', 'r', 11, '??', 0x2 ), # New size for multi-symbol.
-      ( '.L.str105', 'r', 17, '??', 0x3 ), # New of same size for multi-symbol.
-      ( '.L.str105', 'r', 17, '??', 0x4 ), # Same.
-      ( '.L.str106', 'r', 3, '??', 0x5 ), # Same.
-      ( '.L.str107', 'r', 5, '??', 0x6 ), # New size for symbol.
-      ( '.L.str107', 'r', 7, '??', 0x7 ), # New size for symbol.
-      ( '.L.str108', 'r', 8, '??', 0x8 ), # New symbol.
-    )
-
-    # Here we go
-    (added, removed, changed, unchanged) = \
-        explain_binary_size_delta.Compare(symbol_list1, symbol_list2)
-
-
-    # Now check final stats.
-    orig_stdout = sys.stdout
-    output_collector = cStringIO.StringIO()
-    sys.stdout = output_collector
-    try:
-      explain_binary_size_delta.CrunchStats(added, removed, changed,
-                                            unchanged, True, True)
-    finally:
-      sys.stdout = orig_stdout
-    result = output_collector.getvalue()
-
-    expected_output = """\
-Total change: +22 bytes
-=======================
-  5 added, totalling +48 bytes across 1 sources
-  3 removed, totalling -24 bytes across 1 sources
-  1 shrunk, for a net change of -2 bytes (21 bytes before, 19 bytes after) \
-across 1 sources
-  2 unchanged, totalling 20 bytes
-Source stats:
-  1 sources encountered.
-  0 completely new.
-  0 removed completely.
-  1 partially changed.
-  0 completely unchanged.
-Per-source Analysis:
-
-----------------------------------------
- +22 - Source: ?? - (gained 48, lost 26)
-----------------------------------------
-  New symbols:
-        +17: .L.str105 type=r, size=17 bytes
-        +11: .L.str105 type=r, size=11 bytes
-         +8: .L.str108 type=r, size=8 bytes
-         +7: .L.str107 type=r, size=7 bytes
-         +5: .L.str107 type=r, size=5 bytes
-  Removed symbols:
-         -3: .L.str106 type=r, size=3 bytes
-         -8: .L.str107 type=r, size=8 bytes
-        -13: .L.str106 type=r, size=13 bytes
-  Shrunk symbols:
-         -2: .L.str104 type=r, (was 21 bytes, now 19 bytes)
-"""
-
-    self.maxDiff = None
-    self.assertMultiLineEqual(expected_output, result)
-
-  def testCompareSharedSpace(self):
-    # List entries have form:
-    # symbol_name, symbol_type, symbol_size, file_path, memory_address
-    symbol_list1 = (
-      # File with two symbols, same address.
-      ( 'sym1', 'r', 8, '/file', 0x1 ),
-      ( 'sym2', 'r', 8, '/file', 0x1 ),
-    )
-
-    symbol_list2 = (
-      # File with two symbols, same address.
-      ( 'sym1', 'r', 4, '/file', 0x1 ),
-      ( 'sym2', 'r', 4, '/file', 0x1 ),
-    )
-
-    # Here we go
-    (added, removed, changed, unchanged) = \
-        explain_binary_size_delta.Compare(symbol_list1, symbol_list2)
-
-
-    # Now check final stats.
-    orig_stdout = sys.stdout
-    output_collector = cStringIO.StringIO()
-    sys.stdout = output_collector
-    try:
-      explain_binary_size_delta.CrunchStats(added, removed, changed,
-                                            unchanged, True, True)
-    finally:
-      sys.stdout = orig_stdout
-    result = output_collector.getvalue()
-
-    expected_output = """\
-Total change: -4 bytes
-======================
-  2 shrunk, for a net change of -4 bytes (8 bytes before, 4 bytes after) \
-across 1 sources
-  0 unchanged, totalling 0 bytes
-Source stats:
-  1 sources encountered.
-  0 completely new.
-  0 removed completely.
-  1 partially changed.
-  0 completely unchanged.
-Per-source Analysis:
-
-----------------------------------------
- -4 - Source: /file - (gained 0, lost 4)
-----------------------------------------
-  Shrunk symbols:
-         -2: sym1 type=r, (was 4 bytes, now 2 bytes) (adjusted sizes because \
-of memory sharing)
-         -2: sym2 type=r, (was 4 bytes, now 2 bytes) (adjusted sizes because \
-of memory sharing)
-"""
-
-    self.maxDiff = None
-    self.assertMultiLineEqual(expected_output, result)
-
-
-  def testCompareSharedSpaceDuplicateSymbols(self):
-    # List entries have form:
-    # symbol_name, symbol_type, symbol_size, file_path, memory_address
-    symbol_list1 = (
-      # File with two symbols, same address.
-      ( 'sym1', 'r', 7, '/file', 0x2 ),
-      ( 'sym1', 'r', 8, '/file', 0x1 ),
-      ( 'sym2', 'r', 8, '/file', 0x1 ),
-    )
-
-    symbol_list2 = (
-      # File with two symbols, same address.
-      ( 'sym1', 'r', 7, '/file', 0x2 ),
-      ( 'sym1', 'r', 4, '/file', 0x1 ),
-      ( 'sym2', 'r', 4, '/file', 0x1 ),
-    )
-
-    # Here we go
-    (added, removed, changed, unchanged) = \
-        explain_binary_size_delta.Compare(symbol_list1, symbol_list2)
-
-
-    # Now check final stats.
-    orig_stdout = sys.stdout
-    output_collector = cStringIO.StringIO()
-    sys.stdout = output_collector
-    try:
-      explain_binary_size_delta.CrunchStats(added, removed, changed,
-                                            unchanged, True, True)
-    finally:
-      sys.stdout = orig_stdout
-    result = output_collector.getvalue()
-
-    expected_output = """\
-Total change: -4 bytes
-======================
-  1 added, totalling +2 bytes across 1 sources
-  1 removed, totalling -4 bytes across 1 sources
-  1 shrunk, for a net change of -2 bytes (4 bytes before, 2 bytes after) \
-across 1 sources
-  1 unchanged, totalling 7 bytes
-Source stats:
-  1 sources encountered.
-  0 completely new.
-  0 removed completely.
-  1 partially changed.
-  0 completely unchanged.
-Per-source Analysis:
-
-----------------------------------------
- -4 - Source: /file - (gained 2, lost 6)
-----------------------------------------
-  New symbols:
-         +2: sym1 type=r, size=2 bytes (adjusted sizes because of memory \
-sharing)
-  Removed symbols:
-         -4: sym1 type=r, size=4 bytes (adjusted sizes because of memory \
-sharing)
-  Shrunk symbols:
-         -2: sym2 type=r, (was 4 bytes, now 2 bytes) (adjusted sizes because \
-of memory sharing)
-"""
-
-    self.maxDiff = None
-    self.assertMultiLineEqual(expected_output, result)
-
-  def testCompareSharedSpaceBecomingUnshared(self):
-    # List entries have form:
-    # symbol_name, symbol_type, symbol_size, file_path, memory_address
-    symbol_list1 = (
-      # File with two symbols, same address.
-      ( 'sym1', 'r', 8, '/file', 0x1 ),
-      ( 'sym2', 'r', 8, '/file', 0x1 ),
-    )
-
-    symbol_list2 = (
-      # File with two symbols, not the same address.
-      ( 'sym1', 'r', 8, '/file', 0x1 ),
-      ( 'sym2', 'r', 6, '/file', 0x2 ),
-    )
-
-    # Here we go
-    (added, removed, changed, unchanged) = \
-        explain_binary_size_delta.Compare(symbol_list1, symbol_list2)
-
-
-    # Now check final stats.
-    orig_stdout = sys.stdout
-    output_collector = cStringIO.StringIO()
-    sys.stdout = output_collector
-    try:
-      explain_binary_size_delta.CrunchStats(added, removed, changed,
-                                            unchanged, True, True)
-    finally:
-      sys.stdout = orig_stdout
-    result = output_collector.getvalue()
-
-    expected_output = """\
-Total change: +6 bytes
-======================
-  2 grown, for a net change of +6 bytes (8 bytes before, 14 bytes after) \
-across 1 sources
-  0 unchanged, totalling 0 bytes
-Source stats:
-  1 sources encountered.
-  0 completely new.
-  0 removed completely.
-  1 partially changed.
-  0 completely unchanged.
-Per-source Analysis:
-
-----------------------------------------
- +6 - Source: /file - (gained 6, lost 0)
-----------------------------------------
-  Grown symbols:
-         +4: sym1 type=r, (was 4 bytes, now 8 bytes) (adjusted sizes because \
-of memory sharing)
-         +2: sym2 type=r, (was 4 bytes, now 6 bytes) (adjusted sizes because \
-of memory sharing)
-"""
-
-    self.maxDiff = None
-    self.assertMultiLineEqual(expected_output, result)
-
-  def testCompareSymbolsBecomingUnshared(self):
-    # List entries have form:
-    # symbol_name, symbol_type, symbol_size, file_path, memory_address
-    symbol_list1 = (
-      # File with two symbols, not the same address.
-      ( 'sym1', 'r', 8, '/file', 0x1 ),
-      ( 'sym2', 'r', 6, '/file', 0x2 ),
-    )
-
-    symbol_list2 = (
-      # File with two symbols, same address.
-      ( 'sym1', 'r', 8, '/file', 0x1 ),
-      ( 'sym2', 'r', 8, '/file', 0x1 ),
-    )
-
-    # Here we go
-    (added, removed, changed, unchanged) = \
-        explain_binary_size_delta.Compare(symbol_list1, symbol_list2)
-
-
-    # Now check final stats.
-    orig_stdout = sys.stdout
-    output_collector = cStringIO.StringIO()
-    sys.stdout = output_collector
-    try:
-      explain_binary_size_delta.CrunchStats(added, removed, changed,
-                                            unchanged, True, True)
-    finally:
-      sys.stdout = orig_stdout
-    result = output_collector.getvalue()
-
-    expected_output = """\
-Total change: -6 bytes
-======================
-  2 shrunk, for a net change of -6 bytes (14 bytes before, 8 bytes after) \
-across 1 sources
-  0 unchanged, totalling 0 bytes
-Source stats:
-  1 sources encountered.
-  0 completely new.
-  0 removed completely.
-  1 partially changed.
-  0 completely unchanged.
-Per-source Analysis:
-
-----------------------------------------
- -6 - Source: /file - (gained 0, lost 6)
-----------------------------------------
-  Shrunk symbols:
-         -2: sym2 type=r, (was 6 bytes, now 4 bytes) (adjusted sizes because \
-of memory sharing)
-         -4: sym1 type=r, (was 8 bytes, now 4 bytes) (adjusted sizes because \
-of memory sharing)
-"""
-
-    self.maxDiff = None
-    self.assertMultiLineEqual(expected_output, result)
-
-  def testDeltaInfo(self):
-    x = explain_binary_size_delta.DeltaInfo("path", "t", "sym_name", False)
-    assert x == x
-    y = explain_binary_size_delta.DeltaInfo("path", "t", "sym_name", False)
-    assert x == y
-
-    y.new_size = 12
-    assert x != y
-
-    x.new_size = 12
-    assert x == y
-
-    z = explain_binary_size_delta.DeltaInfo("path", "t", "sym_name", True)
-    assert not (x == z)
-    assert x != z
-
-    w = explain_binary_size_delta.DeltaInfo("other_path", "t", "sym_name", True)
-    assert w != z
-
-if __name__ == '__main__':
-  unittest.main()