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Move TestBloomFilter out of XPCOM and into mfbt/tests, now that it exists. No bug, r=testingonlychange

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--HG--
extra : rebase_source : 85a2a56bcc02bf122ee7fd21d16dffd534d1c98d
This commit is contained in:
Jeff Walden 2012-10-03 17:09:59 -07:00
parent 45fceaa15e
commit dede03d303
5 changed files with 105 additions and 122 deletions
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1
mfbt/BloomFilter.h
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@ -13,6 +13,7 @@
#ifndef mozilla_BloomFilter_h_
#define mozilla_BloomFilter_h_
#include "mozilla/Assertions.h"
#include "mozilla/Likely.h"
#include "mozilla/StandardInteger.h"
#include "mozilla/Util.h"

3
mfbt/tests/Makefile.in
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@ -12,9 +12,10 @@ include $(DEPTH)/config/autoconf.mk
STL_FLAGS =
CPP_UNIT_TESTS = \
TestBloomFilter.cpp \
TestCheckedInt.cpp \
TestTypeTraits.cpp \
TestSHA1.cpp \
TestTypeTraits.cpp \
TestWeakPtr.cpp \
$(NULL)

102
mfbt/tests/TestBloomFilter.cpp Normal file
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@ -0,0 +1,102 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/Assertions.h"
#include "mozilla/BloomFilter.h"
#include <stddef.h>
#include <stdio.h>
using mozilla::BloomFilter;
class FilterChecker
{
public:
FilterChecker(uint32_t hash) : mHash(hash) { }
uint32_t hash() const { return mHash; }
private:
uint32_t mHash;
};
int
main()
{
BloomFilter<12, FilterChecker> *filter = new BloomFilter<12, FilterChecker>();
MOZ_ASSERT(filter);
FilterChecker one(1);
FilterChecker two(0x20000);
FilterChecker many(0x10000);
FilterChecker multiple(0x20001);
filter->add(&one);
MOZ_ASSERT(filter->mightContain(&one),
"Filter should contain 'one'");
MOZ_ASSERT(!filter->mightContain(&multiple),
"Filter claims to contain 'multiple' when it should not");
MOZ_ASSERT(filter->mightContain(&many),
"Filter should contain 'many' (false positive)");
filter->add(&two);
MOZ_ASSERT(filter->mightContain(&multiple),
"Filter should contain 'multiple' (false positive)");
// Test basic removals
filter->remove(&two);
MOZ_ASSERT(!filter->mightContain(&multiple),
"Filter claims to contain 'multiple' when it should not after two "
"was removed");
// Test multiple addition/removal
const size_t FILTER_SIZE = 255;
for (size_t i = 0; i < FILTER_SIZE - 1; ++i)
filter->add(&two);
MOZ_ASSERT(filter->mightContain(&multiple),
"Filter should contain 'multiple' after 'two' added lots of times "
"(false positive)");
for (size_t i = 0; i < FILTER_SIZE - 1; ++i)
filter->remove(&two);
MOZ_ASSERT(!filter->mightContain(&multiple),
"Filter claims to contain 'multiple' when it should not after two "
"was removed lots of times");
// Test overflowing the filter buckets
for (size_t i = 0; i < FILTER_SIZE + 1; ++i)
filter->add(&two);
MOZ_ASSERT(filter->mightContain(&multiple),
"Filter should contain 'multiple' after 'two' added lots more "
"times (false positive)");
for (size_t i = 0; i < FILTER_SIZE + 1; ++i)
filter->remove(&two);
MOZ_ASSERT(filter->mightContain(&multiple),
"Filter claims to not contain 'multiple' even though we should "
"have run out of space in the buckets (false positive)");
MOZ_ASSERT(filter->mightContain(&two),
"Filter claims to not contain 'two' even though we should have "
"run out of space in the buckets (false positive)");
filter->remove(&one);
MOZ_ASSERT(!filter->mightContain(&one),
"Filter should not contain 'one', because we didn't overflow its "
"bucket");
filter->clear();
MOZ_ASSERT(!filter->mightContain(&multiple),
"clear() failed to work");
return 0;
}

1
xpcom/tests/Makefile.in
View File

@ -60,7 +60,6 @@ CPP_UNIT_TESTS = \
ShowSSEConfig.cpp \
TestAutoPtr.cpp \
TestAutoRef.cpp \
TestBloomFilter.cpp \
TestCOMArray.cpp \
TestCOMPtr.cpp \
TestCOMPtrEq.cpp \

120
xpcom/tests/TestBloomFilter.cpp
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@ -1,120 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/BloomFilter.h"
#include "TestHarness.h"
#include <stdio.h>
using namespace mozilla;
class FilterChecker {
public:
FilterChecker(uint32_t hash) :
mHash(hash)
{}
uint32_t hash() const { return mHash; }
private:
uint32_t mHash;
};
int main()
{
BloomFilter<12, FilterChecker> *filter = new BloomFilter<12, FilterChecker>();
FilterChecker one(1);
FilterChecker two(0x20000);
FilterChecker many(0x10000);
FilterChecker multiple(0x20001);
filter->add(&one);
if (!filter->mightContain(&one)) {
fail("Filter should contain 'one'");
return -1;
}
if (filter->mightContain(&multiple)) {
fail("Filter claims to contain 'multiple' when it should not");
return -1;
}
if (!filter->mightContain(&many)) {
fail("Filter should contain 'many' (false positive)");
return -1;
}
filter->add(&two);
if (!filter->mightContain(&multiple)) {
fail("Filter should contain 'multiple' (false positive)");
return -1;
}
// Test basic removals
filter->remove(&two);
if (filter->mightContain(&multiple)) {
fail("Filter claims to contain 'multiple' when it should not after two was "
"removed");
return -1;
}
// Test multiple addition/removal
const unsigned FILTER_SIZE = 255;
for (unsigned i = 0; i < FILTER_SIZE - 1; ++i) {
filter->add(&two);
}
if (!filter->mightContain(&multiple)) {
fail("Filter should contain 'multiple' after 'two' added lots of times "
"(false positive)");
return -1;
}
for (unsigned i = 0; i < FILTER_SIZE - 1; ++i) {
filter->remove(&two);
}
if (filter->mightContain(&multiple)) {
fail("Filter claims to contain 'multiple' when it should not after two was "
"removed lots of times");
return -1;
}
// Test overflowing the filter buckets
for (unsigned i = 0; i < FILTER_SIZE + 1; ++i) {
filter->add(&two);
}
if (!filter->mightContain(&multiple)) {
fail("Filter should contain 'multiple' after 'two' added lots more times "
"(false positive)");
return -1;
}
for (unsigned i = 0; i < FILTER_SIZE + 1; ++i) {
filter->remove(&two);
}
if (!filter->mightContain(&multiple)) {
fail("Filter claims to not contain 'multiple' even though we should have "
"run out of space in the buckets (false positive)");
return -1;
}
if (!filter->mightContain(&two)) {
fail("Filter claims to not contain 'two' even though we should have run "
"out of space in the buckets (false positive)");
return -1;
}
filter->remove(&one);
if (filter->mightContain(&one)) {
fail("Filter should not contain 'one', because we didn't overflow its "
"bucket");
return -1;
}
filter->clear();
if (filter->mightContain(&multiple)) {
fail("clear() failed to work");
return -1;
}
return 0;
}