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90 lines
2.0 KiB
C++
90 lines
2.0 KiB
C++
#include <pqxx/nontransaction>
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#include "test_helpers.hxx"
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using namespace pqxx;
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// Test: nontransaction changes are committed immediately.
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namespace
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{
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int BoringYear{1977};
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void test_039()
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{
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connection conn;
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nontransaction tx1{conn};
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test::create_pqxxevents(tx1);
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std::string const Table{"pqxxevents"};
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// Verify our start condition before beginning: there must not be a 1977
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// record already.
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result R(tx1.exec(
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"SELECT * FROM " + Table +
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" "
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"WHERE year=" +
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to_string(BoringYear)));
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PQXX_CHECK_EQUAL(
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std::size(R), 0,
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"Already have a row for " + to_string(BoringYear) + ", cannot test.");
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// (Not needed, but verify that clear() works on empty containers)
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R.clear();
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PQXX_CHECK(std::empty(R), "Result is non-empty after clear().");
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// OK. Having laid that worry to rest, add a record for 1977.
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tx1.exec0(
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"INSERT INTO " + Table +
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" VALUES"
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"(" +
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to_string(BoringYear) +
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","
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"'Yawn'"
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")");
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// Abort tx1. Since tx1 is a nontransaction, which provides only the
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// transaction class interface without providing any form of transactional
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// integrity, this is not going to undo our work.
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tx1.abort();
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// Verify that our record was added, despite the Abort()
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nontransaction tx2(conn, "tx2");
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R = tx2.exec(
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"SELECT * FROM " + Table +
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" "
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"WHERE year=" +
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to_string(BoringYear));
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PQXX_CHECK_EQUAL(std::size(R), 1, "Unexpected result size.");
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PQXX_CHECK(R.capacity() >= std::size(R), "Result's capacity is too small.");
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R.clear();
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PQXX_CHECK(std::empty(R), "result::clear() is broken.");
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// Now remove our record again
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tx2.exec0(
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"DELETE FROM " + Table +
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" "
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"WHERE year=" +
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to_string(BoringYear));
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tx2.commit();
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// And again, verify results
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nontransaction tx3(conn, "tx3");
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R = tx3.exec(
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"SELECT * FROM " + Table +
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" "
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"WHERE year=" +
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to_string(BoringYear));
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PQXX_CHECK_EQUAL(std::size(R), 0, "Record is not gone as expected.");
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}
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PQXX_REGISTER_TEST(test_039);
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} // namespace
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