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First attempt to make RAII cursors, no tests yet
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This commit is contained in:
Blue 2023-10-25 19:18:23 -03:00
parent a0eebc978d
commit 96d7d9ef64
Signed by: blue
GPG key ID: 9B203B252A63EE38
12 changed files with 374 additions and 233 deletions
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141
test/storagecursor.cpp
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@ -28,13 +28,10 @@ protected:
db->removeDirectory();
delete db;
db = nullptr;
cursor = nullptr;
emptyCursor = nullptr;
}
static LMDBAL::Base* db;
static LMDBAL::Cursor<uint64_t, std::string>* cursor;
static LMDBAL::Cursor<uint64_t, std::string>* emptyCursor;
static LMDBAL::Cursor<uint64_t, std::string> cursor;
static LMDBAL::Transaction transaction;
LMDBAL::Storage<uint64_t, std::string>* table;
@ -42,8 +39,7 @@ protected:
};
LMDBAL::Base* StorageCursorTest::db = nullptr;
LMDBAL::Cursor<uint64_t, std::string>* StorageCursorTest::cursor = nullptr;
LMDBAL::Cursor<uint64_t, std::string>* StorageCursorTest::emptyCursor = nullptr;
LMDBAL::Cursor<uint64_t, std::string> StorageCursorTest::cursor;
LMDBAL::Transaction StorageCursorTest::transaction = LMDBAL::Transaction();
static const std::map<uint64_t, std::string> data({
@ -66,19 +62,18 @@ TEST_F(StorageCursorTest, PopulatingTheTable) {
TEST_F(StorageCursorTest, Creation) {
cursor = table->createCursor();
emptyCursor = emptyTable->createCursor();
EXPECT_THROW(cursor->first(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor->last(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor->next(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor->prev(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor->current(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor.first(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor.last(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor.next(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor.prev(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor.current(), LMDBAL::CursorNotReady);
cursor->open();
cursor.open();
}
TEST_F(StorageCursorTest, FirstPrivate) {
std::pair<uint64_t, std::string> element = cursor->first();
std::pair<uint64_t, std::string> element = cursor.first();
std::map<uint64_t, std::string>::const_iterator reference = data.begin();
EXPECT_EQ(element.first, reference->first);
@ -90,14 +85,14 @@ TEST_F(StorageCursorTest, NextPrivate) {
reference++;
for (; reference != data.end(); ++reference) {
std::pair<uint64_t, std::string> element = cursor->next();
std::pair<uint64_t, std::string> element = cursor.next();
EXPECT_EQ(element.first, reference->first);
EXPECT_EQ(element.second, reference->second);
}
EXPECT_THROW(cursor->next(), LMDBAL::NotFound);
EXPECT_THROW(cursor.next(), LMDBAL::NotFound);
std::pair<uint64_t, std::string> element = cursor->first();
std::pair<uint64_t, std::string> element = cursor.first();
reference = data.begin();
EXPECT_EQ(element.first, reference->first);
@ -105,7 +100,7 @@ TEST_F(StorageCursorTest, NextPrivate) {
}
TEST_F(StorageCursorTest, LastPrivate) {
std::pair<uint64_t, std::string> element = cursor->last();
std::pair<uint64_t, std::string> element = cursor.last();
std::map<uint64_t, std::string>::const_reverse_iterator reference = data.rbegin();
EXPECT_EQ(element.first, reference->first);
@ -117,14 +112,14 @@ TEST_F(StorageCursorTest, PrevPrivate) {
reference++;
for (; reference != data.rend(); ++reference) {
std::pair<uint64_t, std::string> element = cursor->prev();
std::pair<uint64_t, std::string> element = cursor.prev();
EXPECT_EQ(element.first, reference->first);
EXPECT_EQ(element.second, reference->second);
}
EXPECT_THROW(cursor->prev(), LMDBAL::NotFound);
EXPECT_THROW(cursor.prev(), LMDBAL::NotFound);
std::pair<uint64_t, std::string> element = cursor->last();
std::pair<uint64_t, std::string> element = cursor.last();
reference = data.rbegin();
EXPECT_EQ(element.first, reference->first);
@ -132,28 +127,28 @@ TEST_F(StorageCursorTest, PrevPrivate) {
}
TEST_F(StorageCursorTest, CurrentPrivate) {
std::pair<uint64_t, std::string> element = cursor->first();
std::pair<uint64_t, std::string> element = cursor.first();
std::map<uint64_t, std::string>::const_iterator reference = data.begin();
EXPECT_EQ(element.first, reference->first);
EXPECT_EQ(element.second, reference->second);
element = cursor->current();
element = cursor.current();
EXPECT_EQ(element.first, reference->first);
EXPECT_EQ(element.second, reference->second);
cursor->next();
element = cursor->current();
cursor.next();
element = cursor.current();
++reference;
EXPECT_EQ(element.first, reference->first);
EXPECT_EQ(element.second, reference->second);
cursor->next();
cursor->next();
cursor->prev();
element = cursor->current();
cursor.next();
cursor.next();
cursor.prev();
element = cursor.current();
++reference;
++reference;
--reference;
@ -163,16 +158,15 @@ TEST_F(StorageCursorTest, CurrentPrivate) {
}
TEST_F(StorageCursorTest, Destruction) {
cursor->close();
cursor.close();
EXPECT_THROW(cursor->first(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor->last(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor->next(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor->prev(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor->current(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor.first(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor.last(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor.next(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor.prev(), LMDBAL::CursorNotReady);
EXPECT_THROW(cursor.current(), LMDBAL::CursorNotReady);
EXPECT_THROW(emptyTable->destroyCursor(cursor), LMDBAL::Unknown);
table->destroyCursor(cursor);
cursor = LMDBAL::Cursor<uint64_t, std::string>();
cursor = table->createCursor();
}
@ -180,8 +174,8 @@ TEST_F(StorageCursorTest, Destruction) {
TEST_F(StorageCursorTest, FirstPublic) {
transaction = db->beginReadOnlyTransaction();
cursor->open(transaction);
std::pair<uint64_t, std::string> element = cursor->first();
cursor.open(transaction);
std::pair<uint64_t, std::string> element = cursor.first();
std::map<uint64_t, std::string>::const_iterator reference = data.begin();
EXPECT_EQ(element.first, reference->first);
@ -193,14 +187,14 @@ TEST_F(StorageCursorTest, NextPublic) {
reference++;
for (; reference != data.end(); ++reference) {
std::pair<uint64_t, std::string> element = cursor->next();
std::pair<uint64_t, std::string> element = cursor.next();
EXPECT_EQ(element.first, reference->first);
EXPECT_EQ(element.second, reference->second);
}
EXPECT_THROW(cursor->next(), LMDBAL::NotFound);
EXPECT_THROW(cursor.next(), LMDBAL::NotFound);
std::pair<uint64_t, std::string> element = cursor->first();
std::pair<uint64_t, std::string> element = cursor.first();
reference = data.begin();
EXPECT_EQ(element.first, reference->first);
@ -208,7 +202,7 @@ TEST_F(StorageCursorTest, NextPublic) {
}
TEST_F(StorageCursorTest, LastPublic) {
std::pair<uint64_t, std::string> element = cursor->last();
std::pair<uint64_t, std::string> element = cursor.last();
std::map<uint64_t, std::string>::const_reverse_iterator reference = data.rbegin();
EXPECT_EQ(element.first, reference->first);
@ -220,14 +214,14 @@ TEST_F(StorageCursorTest, PrevPublic) {
reference++;
for (; reference != data.rend(); ++reference) {
std::pair<uint64_t, std::string> element = cursor->prev();
std::pair<uint64_t, std::string> element = cursor.prev();
EXPECT_EQ(element.first, reference->first);
EXPECT_EQ(element.second, reference->second);
}
EXPECT_THROW(cursor->prev(), LMDBAL::NotFound);
EXPECT_THROW(cursor.prev(), LMDBAL::NotFound);
std::pair<uint64_t, std::string> element = cursor->last();
std::pair<uint64_t, std::string> element = cursor.last();
reference = data.rbegin();
EXPECT_EQ(element.first, reference->first);
@ -235,28 +229,28 @@ TEST_F(StorageCursorTest, PrevPublic) {
}
TEST_F(StorageCursorTest, CurrentPublic) {
std::pair<uint64_t, std::string> element = cursor->first();
std::pair<uint64_t, std::string> element = cursor.first();
std::map<uint64_t, std::string>::const_iterator reference = data.begin();
EXPECT_EQ(element.first, reference->first);
EXPECT_EQ(element.second, reference->second);
element = cursor->current();
element = cursor.current();
EXPECT_EQ(element.first, reference->first);
EXPECT_EQ(element.second, reference->second);
cursor->next();
element = cursor->current();
cursor.next();
element = cursor.current();
++reference;
EXPECT_EQ(element.first, reference->first);
EXPECT_EQ(element.second, reference->second);
cursor->next();
cursor->next();
cursor->prev();
element = cursor->current();
cursor.next();
cursor.next();
cursor.prev();
element = cursor.current();
++reference;
++reference;
--reference;
@ -267,37 +261,38 @@ TEST_F(StorageCursorTest, CurrentPublic) {
TEST_F(StorageCursorTest, CornerCases) {
transaction.terminate();
EXPECT_THROW(cursor->current(), LMDBAL::Unknown);
cursor->close();
EXPECT_THROW(cursor.current(), LMDBAL::Unknown);
cursor.close();
emptyCursor->open();
EXPECT_THROW(emptyCursor->first(), LMDBAL::NotFound);
EXPECT_THROW(emptyCursor->last(), LMDBAL::NotFound);
EXPECT_THROW(emptyCursor->next(), LMDBAL::NotFound);
EXPECT_THROW(emptyCursor->prev(), LMDBAL::NotFound);
EXPECT_THROW(emptyCursor->current(), LMDBAL::Unknown);
emptyCursor->close();
LMDBAL::Cursor<uint64_t, std::string> emptyCursor = emptyTable->createCursor();
emptyCursor.open();
EXPECT_THROW(emptyCursor.first(), LMDBAL::NotFound);
EXPECT_THROW(emptyCursor.last(), LMDBAL::NotFound);
EXPECT_THROW(emptyCursor.next(), LMDBAL::NotFound);
EXPECT_THROW(emptyCursor.prev(), LMDBAL::NotFound);
EXPECT_THROW(emptyCursor.current(), LMDBAL::Unknown);
emptyCursor.close();
cursor->open();
EXPECT_THROW(cursor->current(), LMDBAL::Unknown); //yeah, nice thing to write in the doc
cursor.open();
EXPECT_THROW(cursor.current(), LMDBAL::Unknown); //yeah, nice thing to write in the doc
std::map<uint64_t, std::string>::const_reverse_iterator breference = data.rbegin();
std::pair<uint64_t, std::string> element(cursor->prev());
std::pair<uint64_t, std::string> element(cursor.prev());
EXPECT_EQ(element.first, breference->first); //nice thing to write in the doc, again!
EXPECT_EQ(element.second, breference->second);
element = cursor->current();
element = cursor.current();
EXPECT_EQ(element.first, breference->first);
EXPECT_EQ(element.second, breference->second);
EXPECT_THROW(cursor->next(), LMDBAL::NotFound);
cursor->close();
EXPECT_THROW(cursor.next(), LMDBAL::NotFound);
cursor.close();
cursor->open();
element = cursor->next();
cursor.open();
element = cursor.next();
std::map<uint64_t, std::string>::const_iterator reference = data.begin();
EXPECT_EQ(element.first, reference->first);
EXPECT_EQ(element.second, reference->second);
element = cursor->current();
element = cursor.current();
EXPECT_EQ(element.first, reference->first);
EXPECT_EQ(element.second, reference->second);
EXPECT_THROW(cursor->prev(), LMDBAL::NotFound);
EXPECT_THROW(cursor.prev(), LMDBAL::NotFound);
}