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rocksdb/util/testharness.h

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// Copyright (c) 2013, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#pragma once
#include <stdio.h>
#include <stdlib.h>
#include <sstream>
#include <string>
#include "port/stack_trace.h"
#include "rocksdb/env.h"
#include "rocksdb/slice.h"
#include "util/random.h"
#include "util/string_util.h"
namespace rocksdb {
namespace test {
// Run some of the tests registered by the TEST() macro. If the
// environment variable "ROCKSDB_TESTS" and "ROCKSDB_TESTS_FROM"
// are not set, runs all tests. Otherwise, run all tests after
// ROCKSDB_TESTS_FROM and those specified by ROCKSDB_TESTS.
// Partial name match also works for ROCKSDB_TESTS and
// ROCKSDB_TESTS_FROM. E.g., suppose the tests are:
// TEST(Foo, Hello) { ... }
// TEST(Foo, World) { ... }
// ROCKSDB_TESTS=Hello will run the first test
// ROCKSDB_TESTS=o will run both tests
// ROCKSDB_TESTS=Junk will run no tests
//
// Returns 0 if all tests pass.
// Dies or returns a non-zero value if some test fails.
extern int RunAllTests();
// Return the directory to use for temporary storage.
extern std::string TmpDir(Env* env = Env::Default());
// Return a randomization seed for this run. Typically returns the
// same number on repeated invocations of this binary, but automated
// runs may be able to vary the seed.
extern int RandomSeed();
class TesterHelper;
// An instance of Tester is allocated to hold temporary state during
// the execution of an assertion.
class Tester {
friend class TesterHelper;
private:
bool ok_;
std::stringstream ss_;
public:
Tester() : ok_(true) {}
Tester& Is(bool b, const char* msg) {
if (!b) {
ss_ << " Assertion failure " << msg;
ok_ = false;
}
return *this;
}
Tester& IsOk(const Status& s) {
if (!s.ok()) {
ss_ << " " << s.ToString();
ok_ = false;
}
return *this;
}
Tester& IsNotOk(const Status& s) {
if (s.ok()) {
ss_ << " Error status expected";
ok_ = false;
}
return *this;
}
#define BINARY_OP(name,op) \
template <class X, class Y> \
Tester& name(const X& x, const Y& y) { \
if (! (x op y)) { \
ss_ << " failed: " << x << (" " #op " ") << y; \
ok_ = false; \
} \
return *this; \
}
BINARY_OP(IsEq, ==)
BINARY_OP(IsNe, !=)
BINARY_OP(IsGe, >=)
BINARY_OP(IsGt, >)
BINARY_OP(IsLe, <=)
BINARY_OP(IsLt, <)
#undef BINARY_OP
// Attach the specified value to the error message if an error has occurred
template <class V>
Tester& operator<<(const V& value) {
if (!ok_) {
ss_ << " " << value;
}
return *this;
}
operator bool() const { return ok_; }
};
class TesterHelper {
private:
const char* fname_;
int line_;
public:
TesterHelper(const char* f, int l) : fname_(f), line_(l) {}
void operator=(const Tester& tester) {
fprintf(stderr, "%s:%d:%s\n", fname_, line_, tester.ss_.str().c_str());
port::PrintStack(2);
exit(1);
}
};
// This is trying to solve:
// * Evaluate expression
// * Abort the test if the evaluation is not successful with the evaluation
// details.
// * Support operator << with ASSERT* for extra messages provided by the user
// code of ASSERT*
//
// For the third, we need to make sure that an expression at the end of macro
// supports << operator. But since we can have multiple of << we cannot abort
// inside implementation of operator <<, as we may miss some extra message. That
// is why there is TesterHelper with operator = which has lower precedence then
// operator <<, and it will be called after all messages from use code are
// accounted by <<.
//
// operator bool is added to Tester to make possible its declaration inside if
// statement and do not pollute its outer scope with the name tester. But in C++
// we cannot do any other operations inside if statement besides declaration.
// Then in order to get inside if body there are two options: make operator
// Tester::bool return true if ok_ == false or put the body into else part.
#define TEST_EXPRESSION_(expression) \
if (::rocksdb::test::Tester& tester = (expression)) \
; \
else \
::rocksdb::test::TesterHelper(__FILE__, __LINE__) = tester
#define ASSERT_TRUE(c) TEST_EXPRESSION_(::rocksdb::test::Tester().Is((c), #c))
#define ASSERT_OK(s) TEST_EXPRESSION_(::rocksdb::test::Tester().IsOk((s)))
#define ASSERT_NOK(s) TEST_EXPRESSION_(::rocksdb::test::Tester().IsNotOk((s)))
#define ASSERT_EQ(a, b) \
TEST_EXPRESSION_(::rocksdb::test::Tester().IsEq((a), (b)))
#define ASSERT_NE(a, b) \
TEST_EXPRESSION_(::rocksdb::test::Tester().IsNe((a), (b)))
#define ASSERT_GE(a, b) \
TEST_EXPRESSION_(::rocksdb::test::Tester().IsGe((a), (b)))
#define ASSERT_GT(a, b) \
TEST_EXPRESSION_(::rocksdb::test::Tester().IsGt((a), (b)))
#define ASSERT_LE(a, b) \
TEST_EXPRESSION_(::rocksdb::test::Tester().IsLe((a), (b)))
#define ASSERT_LT(a, b) \
TEST_EXPRESSION_(::rocksdb::test::Tester().IsLt((a), (b)))
#define EXPECT_TRUE(c) TEST_EXPRESSION_(::rocksdb::test::Tester().Is((c), #c))
#define EXPECT_OK(s) TEST_EXPRESSION_(::rocksdb::test::Tester().IsOk((s)))
#define EXPECT_NOK(s) TEST_EXPRESSION_(::rocksdb::test::Tester().IsNotOk((s)))
#define EXPECT_EQ(a, b) \
TEST_EXPRESSION_(::rocksdb::test::Tester().IsEq((a), (b)))
#define EXPECT_NE(a, b) \
TEST_EXPRESSION_(::rocksdb::test::Tester().IsNe((a), (b)))
#define EXPECT_GE(a, b) \
TEST_EXPRESSION_(::rocksdb::test::Tester().IsGe((a), (b)))
#define EXPECT_GT(a, b) \
TEST_EXPRESSION_(::rocksdb::test::Tester().IsGt((a), (b)))
#define EXPECT_LE(a, b) \
TEST_EXPRESSION_(::rocksdb::test::Tester().IsLe((a), (b)))
#define EXPECT_LT(a, b) \
TEST_EXPRESSION_(::rocksdb::test::Tester().IsLt((a), (b)))
#define TCONCAT(a, b) TCONCAT1(a, b)
#define TCONCAT1(a, b) a##b
#define TEST(base, name) \
class TCONCAT(_Test_, name) : public base { \
public: \
void _Run(); \
static void _RunIt() { \
TCONCAT(_Test_, name) t; \
t._Run(); \
} \
}; \
bool TCONCAT(_Test_ignored_, name) __attribute__((__unused__)) \
= ::rocksdb::test::RegisterTest(#base, #name, \
&TCONCAT(_Test_, name)::_RunIt); \
void TCONCAT(_Test_, name)::_Run()
// Register the specified test. Typically not used directly, but
// invoked via the macro expansion of TEST.
extern bool RegisterTest(const char* base, const char* name, void (*func)());
} // namespace test
} // namespace rocksdb