'how to build leveldb's single test files?
i kown it's about gtest framework, i can use gtest for my own demo but in leveldb repo i don't know how to build a single test file such as:leveldb/db/db_test.cc, it will report other confused errors.
precondition:
- what i want is debug a single testfile such as db_test.cc.
i use vscode, this is part of my task.json which i think already contains all needed:
"args": [
"-fdiagnostics-color=always",
"-g",
"${file}",
"-o",
"${fileDirname}/${fileBasenameNoExtension}",
"-I", "/root/wzy/code/cpp/leveldb/include",
"-I", "/root/wzy/code/cpp/leveldb",
"-I", "/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include",
"-L", "/root/wzy/code/cpp/leveldb/build",
"-lleveldb",
"-lsnappy",
"-pthread"
]
and build errors like these:
/usr/bin/g++ -fdiagnostics-color=always -g /root/wzy/code/cpp/leveldb/db/db_test.cc -o /root/wzy/code/cpp/leveldb/db/db_test -I /root/wzy/code/cpp/leveldb/include -I /root/wzy/code/cpp/leveldb -I /root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include -L /root/wzy/code/cpp/leveldb/build -lleveldb -lsnappy -lpthread
In file included from /root/wzy/code/cpp/leveldb/db/db_test.cc:12:
/root/wzy/code/cpp/leveldb/db/db_impl.h:174:3: error: 'port' does not name a type
174 | port::Mutex mutex_;
| ^~~~
/root/wzy/code/cpp/leveldb/db/db_impl.h:176:3: error: 'port' does not name a type
176 | port::CondVar background_work_finished_signal_ GUARDED_BY(mutex_);
| ^~~~
In file included from /root/wzy/code/cpp/leveldb/db/db_test.cc:14:
/root/wzy/code/cpp/leveldb/db/version_set.h:181:41: error: 'port' has not been declared
181 | Status LogAndApply(VersionEdit* edit, port::Mutex* mu)
| ^~~~
/root/wzy/code/cpp/leveldb/db/version_set.h:181:52: error: expected ',' or '...' before '*' token
181 | Status LogAndApply(VersionEdit* edit, port::Mutex* mu)
| ^
In file included from /root/wzy/code/cpp/leveldb/db/db_test.cc:24:
/root/wzy/code/cpp/leveldb/util/mutexlock.h:25:22: error: 'port' has not been declared
25 | explicit MutexLock(port::Mutex* mu) EXCLUSIVE_LOCK_FUNCTION(mu) : mu_(mu) {
| ^~~~
/root/wzy/code/cpp/leveldb/util/mutexlock.h:25:33: error: expected ')' before '*' token
25 | explicit MutexLock(port::Mutex* mu) EXCLUSIVE_LOCK_FUNCTION(mu) : mu_(mu) {
| ~ ^
| )
/root/wzy/code/cpp/leveldb/util/mutexlock.h:34:3: error: 'port' does not name a type
34 | port::Mutex* const mu_;
| ^~~~
/root/wzy/code/cpp/leveldb/util/mutexlock.h: In destructor 'leveldb::MutexLock::~MutexLock()':
/root/wzy/code/cpp/leveldb/util/mutexlock.h:28:42: error: 'class leveldb::MutexLock' has no member named 'mu_'
28 | ~MutexLock() UNLOCK_FUNCTION() { this->mu_->Unlock(); }
| ^~~
In file included from /root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-spec-builders.h:75,
from /root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-function-mocker.h:42,
from /root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock.h:61,
from /root/wzy/code/cpp/leveldb/util/testutil.h:8,
from /root/wzy/code/cpp/leveldb/db/db_test.cc:25:
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h: In member function 'testing::internal::FieldsAreMatcher<Inner>::operator testing::Matcher<T>() const':
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:3165:49: error: 'IndexSequenceFor' was not declared in this scope; did you mean 'IndexSequence'?
3165 | new FieldsAreMatcherImpl<const Struct&, IndexSequenceFor<Inner...>>(
| ^~~~~~~~~~~~~~~~
| IndexSequence
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:3165:71: error: expected parameter pack before '...'
3165 | new FieldsAreMatcherImpl<const Struct&, IndexSequenceFor<Inner...>>(
| ^~~
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:3165:71: error: template argument 2 is invalid
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h: At global scope:
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4291:21: error: 'StringLike' in namespace 'testing::internal' does not name a template type; did you mean 'Strings'?
4291 | const internal::StringLike<T>& str) {
| ^~~~~~~~~~
| Strings
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4291:31: error: expected ',' or '...' before '<' token
4291 | const internal::StringLike<T>& str) {
| ^
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h: In function 'testing::PolymorphicMatcher<testing::internal::StrEqualityMatcher<std::__cxx11::basic_string<char> > > testing::StrEq(int)':
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4293:61: error: 'str' was not declared in this scope; did you mean 'std'?
4293 | internal::StrEqualityMatcher<std::string>(std::string(str), true, true));
| ^~~
| std
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h: At global scope:
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4299:21: error: 'StringLike' in namespace 'testing::internal' does not name a template type; did you mean 'Strings'?
4299 | const internal::StringLike<T>& str) {
| ^~~~~~~~~~
| Strings
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4299:31: error: expected ',' or '...' before '<' token
4299 | const internal::StringLike<T>& str) {
| ^
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h: In function 'testing::PolymorphicMatcher<testing::internal::StrEqualityMatcher<std::__cxx11::basic_string<char> > > testing::StrNe(int)':
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4301:61: error: 'str' was not declared in this scope; did you mean 'std'?
4301 | internal::StrEqualityMatcher<std::string>(std::string(str), false, true));
| ^~~
| std
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h: At global scope:
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4307:21: error: 'StringLike' in namespace 'testing::internal' does not name a template type; did you mean 'Strings'?
4307 | const internal::StringLike<T>& str) {
| ^~~~~~~~~~
| Strings
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4307:31: error: expected ',' or '...' before '<' token
4307 | const internal::StringLike<T>& str) {
| ^
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h: In function 'testing::PolymorphicMatcher<testing::internal::StrEqualityMatcher<std::__cxx11::basic_string<char> > > testing::StrCaseEq(int)':
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4309:61: error: 'str' was not declared in this scope; did you mean 'std'?
4309 | internal::StrEqualityMatcher<std::string>(std::string(str), true, false));
| ^~~
| std
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h: At global scope:
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4315:21: error: 'StringLike' in namespace 'testing::internal' does not name a template type; did you mean 'Strings'?
4315 | const internal::StringLike<T>& str) {
| ^~~~~~~~~~
| Strings
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4315:31: error: expected ',' or '...' before '<' token
4315 | const internal::StringLike<T>& str) {
| ^
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h: In function 'testing::PolymorphicMatcher<testing::internal::StrEqualityMatcher<std::__cxx11::basic_string<char> > > testing::StrCaseNe(int)':
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4317:19: error: 'str' was not declared in this scope; did you mean 'std'?
4317 | std::string(str), false, false));
| ^~~
| std
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h: At global scope:
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4324:21: error: 'StringLike' in namespace 'testing::internal' does not name a template type; did you mean 'Strings'?
4324 | const internal::StringLike<T>& substring) {
| ^~~~~~~~~~
| Strings
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4324:31: error: expected ',' or '...' before '<' token
4324 | const internal::StringLike<T>& substring) {
| ^
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h: In function 'testing::PolymorphicMatcher<testing::internal::HasSubstrMatcher<std::__cxx11::basic_string<char> > > testing::HasSubstr(int)':
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4326:59: error: 'substring' was not declared in this scope; did you mean 'IsSubstring'?
4326 | internal::HasSubstrMatcher<std::string>(std::string(substring)));
| ^~~~~~~~~
| IsSubstring
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h: At global scope:
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4332:21: error: 'StringLike' in namespace 'testing::internal' does not name a template type; did you mean 'Strings'?
4332 | const internal::StringLike<T>& prefix) {
| ^~~~~~~~~~
| Strings
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4332:31: error: expected ',' or '...' before '<' token
4332 | const internal::StringLike<T>& prefix) {
| ^
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h: In function 'testing::PolymorphicMatcher<testing::internal::StartsWithMatcher<std::__cxx11::basic_string<char> > > testing::StartsWith(int)':
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4334:60: error: 'prefix' was not declared in this scope; did you mean 'profil'?
4334 | internal::StartsWithMatcher<std::string>(std::string(prefix)));
| ^~~~~~
| profil
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h: At global scope:
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4340:21: error: 'StringLike' in namespace 'testing::internal' does not name a template type; did you mean 'Strings'?
4340 | const internal::StringLike<T>& suffix) {
| ^~~~~~~~~~
| Strings
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4340:31: error: expected ',' or '...' before '<' token
4340 | const internal::StringLike<T>& suffix) {
| ^
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h: In function 'testing::PolymorphicMatcher<testing::internal::EndsWithMatcher<std::__cxx11::basic_string<char> > > testing::EndsWith(int)':
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:4342:58: error: 'suffix' was not declared in this scope
4342 | internal::EndsWithMatcher<std::string>(std::string(suffix)));
| ^~~~~~
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h: In member function 'bool testing::internal::ExceptionMatcherImpl<Err>::MatchAndExplain(T&&, testing::MatchResultListener*) const':
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:5150:77: error: no matching function for call to 'GetTypeName(const std::type_info&)'
5150 | *listener << "throws an exception of type " << GetTypeName(typeid(err));
| ^
In file included from /usr/include/gtest/internal/gtest-internal.h:67,
from /usr/include/gtest/gtest.h:62,
from /root/wzy/code/cpp/leveldb/db/db_test.cc:11:
/usr/include/gtest/internal/gtest-type-util.h:80:13: note: candidate: 'template<class T> std::string testing::internal::GetTypeName()'
80 | std::string GetTypeName() {
| ^~~~~~~~~~~
/usr/include/gtest/internal/gtest-type-util.h:80:13: note: template argument deduction/substitution failed:
In file included from /root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-spec-builders.h:75,
from /root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-function-mocker.h:42,
from /root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock.h:61,
from /root/wzy/code/cpp/leveldb/util/testutil.h:8,
from /root/wzy/code/cpp/leveldb/db/db_test.cc:25:
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-matchers.h:5150:77: note: candidate expects 0 arguments, 1 provided
5150 | *listener << "throws an exception of type " << GetTypeName(typeid(err));
| ^
In file included from /root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock.h:63,
from /root/wzy/code/cpp/leveldb/util/testutil.h:8,
from /root/wzy/code/cpp/leveldb/db/db_test.cc:25:
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-more-actions.h: In member function 'decltype (testing::internal::InvokeArgument(get<index>(std::forward_as_tuple((forward<Args>)(args)...)), (declval<const Params&>)()...)) testing::internal::InvokeArgumentAction<index, Params>::operator()(Args&& ...) const':
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-more-actions.h:519:47: error: 'FlatTupleConstructTag' was not declared in this scope
519 | internal::FlatTuple<Args&&...> args_tuple(FlatTupleConstructTag{},
| ^~~~~~~~~~~~~~~~~~~~~
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-more-actions.h: In function 'testing::internal::InvokeArgumentAction<index, typename std::decay<Params>::type ...> testing::InvokeArgument(Params&& ...)':
/root/wzy/code/cpp/leveldb/third_party/googletest/googlemock/include/gmock/gmock-more-actions.h:564:17: error: 'FlatTupleConstructTag' is not a member of 'testing::internal'
564 | internal::FlatTupleConstructTag{}, std::forward<Params>(params)...)};
| ^~~~~~~~~~~~~~~~~~~~~
/root/wzy/code/cpp/leveldb/db/db_test.cc: At global scope:
/root/wzy/code/cpp/leveldb/db/db_test.cc:61:3: error: 'port' does not name a type
61 | port::Mutex mu_;
| ^~~~
/root/wzy/code/cpp/leveldb/db/db_test.cc: In member function 'void leveldb::{anonymous}::AtomicCounter::IncrementBy(int)':
/root/wzy/code/cpp/leveldb/db/db_test.cc:48:18: error: 'mu_' was not declared in this scope
48 | MutexLock l(&mu_);
| ^~~
/root/wzy/code/cpp/leveldb/db/db_test.cc: In member function 'int leveldb::{anonymous}::AtomicCounter::Read()':
/root/wzy/code/cpp/leveldb/db/db_test.cc:52:18: error: 'mu_' was not declared in this scope
52 | MutexLock l(&mu_);
| ^~~
/root/wzy/code/cpp/leveldb/db/db_test.cc: In member function 'void leveldb::{anonymous}::AtomicCounter::Reset()':
/root/wzy/code/cpp/leveldb/db/db_test.cc:56:18: error: 'mu_' was not declared in this scope
56 | MutexLock l(&mu_);
thanks @Tsyvarev, I defined a LEVELDB_PLATFORM_POSIX in source and this "prot" err is missing, but other errs still exist, I will keep doing this till I can GDB a single gtest file.
Sources
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Source: Stack Overflow
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