mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-21 05:53:09 +00:00
345 lines
11 KiB
C++
345 lines
11 KiB
C++
#include <pqxx/stream_from>
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#include <pqxx/transaction>
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#include "../test_helpers.hxx"
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#include "../test_types.hxx"
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#include <cstring>
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#include <iostream>
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#include <set>
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#include <string>
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#include <tuple>
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#include <vector>
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#include <optional>
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namespace
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{
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void test_nonoptionals(pqxx::connection &connection)
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{
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pqxx::work tx{connection};
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auto extractor{pqxx::stream_from::query(
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tx, "SELECT * FROM stream_from_test ORDER BY number0")};
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PQXX_CHECK(extractor, "stream_from failed to initialize.");
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std::tuple<int, std::string, int, ipv4, std::string, bytea> got_tuple;
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try
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{
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// We can't read the "910" row -- it contains nulls, which our tuple does
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// not accept.
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extractor >> got_tuple;
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PQXX_CHECK_NOTREACHED(
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"Failed to fail to stream null values into null-less fields.");
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}
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catch (pqxx::conversion_error const &e)
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{
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std::string const what{e.what()};
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if (what.find("null") == std::string::npos)
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throw;
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pqxx::test::expected_exception(
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"Could not stream nulls into null-less fields: " + what);
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}
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// The stream is still good though.
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// The second tuple is fine.
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extractor >> got_tuple;
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PQXX_CHECK(extractor, "Stream ended prematurely.");
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PQXX_CHECK_EQUAL(std::get<0>(got_tuple), 1234, "Bad value.");
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// Don't know much about the timestamp, but let's assume it starts with a
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// year in the second millennium.
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PQXX_CHECK(
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std::get<1>(got_tuple).at(0) == '2', "Bad value. Expected timestamp.");
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PQXX_CHECK_LESS(
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std::size(std::get<1>(got_tuple)), 40u, "Unexpected length.");
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PQXX_CHECK_GREATER(
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std::size(std::get<1>(got_tuple)), 20u, "Unexpected length.");
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PQXX_CHECK_EQUAL(std::get<2>(got_tuple), 4321, "Bad value.");
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PQXX_CHECK_EQUAL(std::get<3>(got_tuple), (ipv4{8, 8, 8, 8}), "Bad value.");
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PQXX_CHECK_EQUAL(std::get<4>(got_tuple), "hello\n \tworld", "Bad value.");
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PQXX_CHECK_EQUAL(
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std::get<5>(got_tuple), (bytea{'\x00', '\x01', '\x02'}), "Bad value.");
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// The third tuple contains some nulls. For what it's worth, when we *know*
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// that we're getting nulls, we can stream them into nullptr_t fields.
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std::tuple<
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int, std::string, std::nullptr_t, std::nullptr_t, std::string, bytea>
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tup_w_nulls;
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extractor >> tup_w_nulls;
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PQXX_CHECK(extractor, "Stream ended prematurely.");
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PQXX_CHECK_EQUAL(std::get<0>(tup_w_nulls), 5678, "Bad value.");
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PQXX_CHECK(std::get<2>(tup_w_nulls) == nullptr, "Bad null.");
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PQXX_CHECK(std::get<3>(tup_w_nulls) == nullptr, "Bad null.");
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// We're at the end of the stream.
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extractor >> tup_w_nulls;
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PQXX_CHECK(not extractor, "Stream did not end.");
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// Of course we can't stream a non-null value into a nullptr field.
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auto ex2{pqxx::stream_from::query(tx, "SELECT 1")};
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std::tuple<std::nullptr_t> null_tup;
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try
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{
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ex2 >> null_tup;
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PQXX_CHECK_NOTREACHED(
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"stream_from should have refused to convert non-null value to "
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"nullptr_t.");
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}
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catch (pqxx::conversion_error const &e)
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{
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std::string const what{e.what()};
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if (what.find("null") == std::string::npos)
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throw;
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pqxx::test::expected_exception(
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std::string{"Could not extract row: "} + what);
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}
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ex2 >> null_tup;
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PQXX_CHECK(not ex2, "Stream did not end.");
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PQXX_CHECK_SUCCEEDS(
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tx.exec1("SELECT 1"), "Could not use transaction after stream_from.");
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}
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void test_bad_tuples(pqxx::connection &conn)
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{
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pqxx::work tx{conn};
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auto extractor{pqxx::stream_from::table(tx, {"stream_from_test"})};
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PQXX_CHECK(extractor, "stream_from failed to initialize");
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std::tuple<int> got_tuple_too_short;
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try
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{
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extractor >> got_tuple_too_short;
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PQXX_CHECK_NOTREACHED("stream_from improperly read first row");
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}
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catch (pqxx::usage_error const &e)
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{
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std::string what{e.what()};
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if (
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what.find("1") == std::string::npos or
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what.find("6") == std::string::npos)
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throw;
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pqxx::test::expected_exception("Tuple is wrong size: " + what);
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}
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std::tuple<int, std::string, int, ipv4, std::string, bytea, std::string>
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got_tuple_too_long;
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try
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{
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extractor >> got_tuple_too_long;
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PQXX_CHECK_NOTREACHED("stream_from improperly read first row");
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}
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catch (pqxx::usage_error const &e)
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{
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std::string what{e.what()};
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if (
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what.find("6") == std::string::npos or
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what.find("7") == std::string::npos)
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throw;
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pqxx::test::expected_exception("Could not extract row: " + what);
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}
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extractor.complete();
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}
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#define ASSERT_FIELD_EQUAL(OPT, VAL) \
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PQXX_CHECK(static_cast<bool>(OPT), "unexpected null field"); \
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PQXX_CHECK_EQUAL(*OPT, VAL, "field value mismatch")
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#define ASSERT_FIELD_NULL(OPT) \
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PQXX_CHECK(not static_cast<bool>(OPT), "expected null field")
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template<template<typename...> class O>
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void test_optional(pqxx::connection &connection)
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{
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pqxx::work tx{connection};
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auto extractor{pqxx::stream_from::query(
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tx, "SELECT * FROM stream_from_test ORDER BY number0")};
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PQXX_CHECK(extractor, "stream_from failed to initialize");
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std::tuple<int, O<std::string>, O<int>, O<ipv4>, O<std::string>, O<bytea>>
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got_tuple;
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extractor >> got_tuple;
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PQXX_CHECK(extractor, "stream_from failed to read third row");
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PQXX_CHECK_EQUAL(std::get<0>(got_tuple), 910, "field value mismatch");
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ASSERT_FIELD_NULL(std::get<1>(got_tuple));
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ASSERT_FIELD_NULL(std::get<2>(got_tuple));
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ASSERT_FIELD_NULL(std::get<3>(got_tuple));
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ASSERT_FIELD_EQUAL(std::get<4>(got_tuple), "\\N");
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ASSERT_FIELD_EQUAL(std::get<5>(got_tuple), bytea{});
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extractor >> got_tuple;
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PQXX_CHECK(extractor, "stream_from failed to read first row.");
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PQXX_CHECK_EQUAL(std::get<0>(got_tuple), 1234, "Field value mismatch.");
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PQXX_CHECK(
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static_cast<bool>(std::get<1>(got_tuple)), "Unexpected null field.");
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// PQXX_CHECK_EQUAL(*std::get<1>(got_tuple), , "field value mismatch");
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ASSERT_FIELD_EQUAL(std::get<2>(got_tuple), 4321);
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ASSERT_FIELD_EQUAL(std::get<3>(got_tuple), (ipv4{8, 8, 8, 8}));
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ASSERT_FIELD_EQUAL(std::get<4>(got_tuple), "hello\n \tworld");
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ASSERT_FIELD_EQUAL(std::get<5>(got_tuple), (bytea{'\x00', '\x01', '\x02'}));
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extractor >> got_tuple;
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PQXX_CHECK(extractor, "stream_from failed to read second row");
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PQXX_CHECK_EQUAL(std::get<0>(got_tuple), 5678, "field value mismatch");
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ASSERT_FIELD_EQUAL(std::get<1>(got_tuple), "2018-11-17 21:23:00");
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ASSERT_FIELD_NULL(std::get<2>(got_tuple));
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ASSERT_FIELD_NULL(std::get<3>(got_tuple));
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ASSERT_FIELD_EQUAL(std::get<4>(got_tuple), "\u3053\u3093\u306b\u3061\u308f");
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ASSERT_FIELD_EQUAL(
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std::get<5>(got_tuple), (bytea{'f', 'o', 'o', ' ', 'b', 'a', 'r', '\0'}));
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extractor >> got_tuple;
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PQXX_CHECK(not extractor, "stream_from failed to detect end of stream");
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extractor.complete();
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}
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void test_stream_from()
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{
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pqxx::connection conn;
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pqxx::work tx{conn};
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tx.exec0(
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"CREATE TEMP TABLE stream_from_test ("
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"number0 INT NOT NULL,"
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"ts1 TIMESTAMP NULL,"
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"number2 INT NULL,"
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"addr3 INET NULL,"
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"txt4 TEXT NULL,"
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"bin5 BYTEA NOT NULL"
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")");
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tx.exec_params(
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"INSERT INTO stream_from_test VALUES ($1,$2,$3,$4,$5,$6)", 910, nullptr,
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nullptr, nullptr, "\\N", bytea{});
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tx.exec_params(
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"INSERT INTO stream_from_test VALUES ($1,$2,$3,$4,$5,$6)", 1234, "now",
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4321, ipv4{8, 8, 8, 8}, "hello\n \tworld", bytea{'\x00', '\x01', '\x02'});
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tx.exec_params(
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"INSERT INTO stream_from_test VALUES ($1,$2,$3,$4,$5,$6)", 5678,
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"2018-11-17 21:23:00", nullptr, nullptr, "\u3053\u3093\u306b\u3061\u308f",
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bytea{'f', 'o', 'o', ' ', 'b', 'a', 'r', '\0'});
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tx.commit();
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test_nonoptionals(conn);
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test_bad_tuples(conn);
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std::cout << "testing `std::unique_ptr` as optional...\n";
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test_optional<std::unique_ptr>(conn);
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std::cout << "testing `std::optional` as optional...\n";
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test_optional<std::optional>(conn);
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}
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void test_stream_from_does_escaping()
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{
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std::string const input{"a\t\n\n\n \\b\nc"};
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pqxx::connection conn;
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pqxx::work tx{conn};
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tx.exec0("CREATE TEMP TABLE badstr (str text)");
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tx.exec0("INSERT INTO badstr (str) VALUES (" + tx.quote(input) + ")");
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auto reader{pqxx::stream_from::table(tx, {"badstr"})};
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std::tuple<std::string> out;
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reader >> out;
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PQXX_CHECK_EQUAL(
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std::get<0>(out), input, "stream_from got weird characters wrong.");
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}
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void test_stream_from_does_iteration()
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{
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pqxx::connection conn;
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pqxx::work tx{conn};
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tx.exec0("CREATE TEMP TABLE str (s text)");
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tx.exec0("INSERT INTO str (s) VALUES ('foo')");
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auto reader{pqxx::stream_from::table(tx, {"str"})};
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int i{0};
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std::string out;
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for (std::tuple<std::string> t : reader.iter<std::string>())
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{
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i++;
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out = std::get<0>(t);
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}
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PQXX_CHECK_EQUAL(i, 1, "Wrong number of iterations.");
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PQXX_CHECK_EQUAL(out, "foo", "Got wrong string.");
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tx.exec0("INSERT INTO str (s) VALUES ('bar')");
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i = 0;
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std::set<std::string> strings;
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auto reader2{pqxx::stream_from::table(tx, {"str"})};
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for (std::tuple<std::string> t : reader2.iter<std::string>())
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{
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i++;
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strings.insert(std::get<0>(t));
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}
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PQXX_CHECK_EQUAL(i, 2, "Wrong number of iterations.");
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PQXX_CHECK_EQUAL(
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std::size(strings), 2u, "Wrong number of strings retrieved.");
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PQXX_CHECK(strings.find("foo") != std::end(strings), "Missing key.");
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PQXX_CHECK(strings.find("bar") != std::end(strings), "Missing key.");
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}
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void test_transaction_stream_from()
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{
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pqxx::connection conn;
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pqxx::work tx{conn};
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tx.exec0("CREATE TEMP TABLE sample (id integer, name varchar)");
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tx.exec0("INSERT INTO sample (id, name) VALUES (321, 'something')");
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int items{0};
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int id{0};
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std::string name;
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for (auto [iid, iname] :
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tx.stream<int, std::string_view>("SELECT id, name FROM sample"))
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{
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items++;
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id = iid;
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name = iname;
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}
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PQXX_CHECK_EQUAL(items, 1, "Wrong number of iterations.");
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PQXX_CHECK_EQUAL(id, 321, "Got wrong int.");
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PQXX_CHECK_EQUAL(name, std::string{"something"}, "Got wrong string.");
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PQXX_CHECK_EQUAL(
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tx.query_value<int>("SELECT 4"), 4,
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"Loop did not relinquish transaction.");
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}
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void test_stream_from_read_row()
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{
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pqxx::connection conn;
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pqxx::work tx{conn};
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tx.exec0("CREATE TEMP TABLE sample (id integer, name varchar, opt integer)");
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tx.exec0("INSERT INTO sample (id, name) VALUES (321, 'something')");
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auto stream{pqxx::stream_from::table(tx, {"sample"})};
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auto fields{stream.read_row()};
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PQXX_CHECK_EQUAL(fields->size(), 3ul, "Wrong number of fields.");
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PQXX_CHECK_EQUAL(
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std::string((*fields)[0]), "321", "Integer field came out wrong.");
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PQXX_CHECK_EQUAL(
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std::string((*fields)[1]), "something", "Text field came out wrong.");
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PQXX_CHECK(std::data((*fields)[2]) == nullptr, "Null field came out wrong.");
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auto last{stream.read_row()};
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PQXX_CHECK(last == nullptr, "No null pointer at end of stream.");
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}
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PQXX_REGISTER_TEST(test_stream_from);
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PQXX_REGISTER_TEST(test_stream_from_does_escaping);
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PQXX_REGISTER_TEST(test_stream_from_does_iteration);
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PQXX_REGISTER_TEST(test_transaction_stream_from);
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PQXX_REGISTER_TEST(test_stream_from_read_row);
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} // namespace
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