unittest/sqld.cc

/*
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Copyright (c) 2022, Stable Cloud Computing, Inc.
 
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
 
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   this software without specific prior written permission.
 
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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*/
#include <sqlite/sqld.h>
#include <gtest/gtest.h>
#include <string>
#include <iostream>
#include <system_error>
#include <util/fs.h>
 
using std::cout;
using std::endl;
using std::string;
using std::vector;
using std::system_error;
using std::runtime_error;
using fs = scc::util::Filesystem;
using scc::sqld::Conn;
using scc::sqld::Req;
using scc::sqld::Trans;
 
struct SqliteTest : public testing::Test
{
    string curdir;
    Conn db;
 
    SqliteTest()
    {
        curdir = fs::get_current_dir();
 
        system_error err;
        fs::remove_all("sandbox", &err);
        fs::create_dir("sandbox");
        fs::change_dir("sandbox");
    }
    virtual ~SqliteTest()
    {
        fs::change_dir(curdir);
        system_error err;
        fs::remove_all("sandbox", &err);
    }
 
    void reopen(const string& uri)
    {
        cout << "opening: " << uri << endl;
        db.reopen(uri);
    }
};
 
TEST_F(SqliteTest, default_conn)
{
    auto fs = fs::scan_dir(".");
    cout << "filesystem:" << endl;
    for (auto& d : fs)
    {
        cout << d.first << " " << d.second << endl;
    }
    ASSERT_EQ(fs.size(), 0);
}
 
TEST_F(SqliteTest, memory_conn)
{
    reopen("file::memory:");        // reopen the connection without the shared cache
    auto fs = fs::scan_dir(".");
    cout << "filesystem:" << endl;
    for (auto& d : fs)
    {
        cout << d.first << " " << d.second << endl;
    }
    ASSERT_EQ(fs.size(), 0);
}
 
TEST_F(SqliteTest, file_open)
{
    reopen("file:dbfile?mode=rwc"); // open a read/write/create file backed connection
    auto fs = fs::scan_dir(".");
    cout << "filesystem:" << endl;
    for (auto& d : fs)
    {
        cout << d.first << " " << d.second << endl;
    }
    ASSERT_EQ(fs.size(), 1);
    system_error err;
    ASSERT_EQ(fs::file_stat("dbfile", &err).type, scc::util::FileType::reg);
}
 
TEST_F(SqliteTest, exec_select)
{
    Req req(db);
 
    req.sql()
        << "create table t(a TEXT, b INT) STRICT;"
        << "insert into t values('hello!', 1);"
        << "insert into t values('goodbye', 2);"
        << "select * from t;";
 
    int r = req.exec_select();
    ASSERT_EQ(r, 2);
 
    cout << "first col name: " << req.col_name(0) << endl;
    ASSERT_EQ(req.col_name(0), "a");
    string n;
    req.col_name(1, n);
    cout << "second col name: " << n << endl;
    ASSERT_EQ(n, "b");
 
    ASSERT_EQ(req.col_text(0), "hello!");
    req.col_text(0, n);
    ASSERT_EQ(n, "hello!");
 
    ASSERT_EQ(req.col_int(1), 1);
 
    ASSERT_EQ(req.next_row(), 2);
 
    ASSERT_EQ(req.col_text(0), "goodbye");
    req.col_text(0, n);
    ASSERT_EQ(n, "goodbye");
 
    ASSERT_EQ(req.col_int(1), 2);
 
    ASSERT_EQ(req.next_row(), 0);
 
    ASSERT_EQ(req.exec_select(), 0);
}
 
TEST_F(SqliteTest, exec)
{
    reopen("file:dbfile?mode=rwc");
    Req req(db);
 
    int64_t big = 1;
    big <<= 48;
 
    cout << "big is " << big << endl;
 
    req.sql()
        << "create table t(a VARCHAR PRIMARY KEY, b DOUBLE, c INTEGER DEFAULT 0);"
        << "insert into t (a, b) values('hello!', 1.1);"
        << "insert into t values('goodbye', 2.2, " << big << ");"
        << "select * from t;"
        << "insert into t (a, b) values('until we meet again', 3.3);";
 
    req.exec();     // should go through all the statements ignoring the select statement
 
    req.clear();
    req.sql() << "select b,c from t where a is 'goodbye';";
 
    int r = req.exec_select();
    ASSERT_EQ(r, 2);
    ASSERT_EQ(req.col_real(0), 2.2);
    ASSERT_EQ(req.col_int64(1), big);
}
 
TEST_F(SqliteTest, blob)
{
    Req req(db);
 
    req.sql()
        << "create table t(a BLOB) STRICT;"
        << "insert into t values(x'deadbeef');"
        << "select * from t;";
 
    int r = req.exec_select();
    ASSERT_EQ(r, 1);
 
    vector<char> t = {'\xde', '\xad', '\xbe', '\xef'}, v;
    req.col_blob(0, v);
    ASSERT_EQ(t, v);
}
 
TEST_F(SqliteTest, two_conns_xact)
{
    reopen("file:dbfile?mode=rwc");     // first connection is read/write/create
    
    Req r(db);
 
    r.sql() << "create table t(a ANY) STRICT;";
    r.exec();                                       // create the table
 
    Trans x(db);
 
    ASSERT_FALSE(x.is_active());
 
    x.begin();                                      // begin a transaction
    ASSERT_TRUE(x.is_active());
    r.clear();
    r.sql() << "insert into t values(12345);";
    r.exec();                                       // insert a value
 
    Conn db2("file:dbfile?mode=ro");        // second connection is read-only
 
    Req r2(db2);                        // request on second connection
 
    r2.sql() << "select * from t;";
 
    ASSERT_EQ(r2.exec_select(), 0);     // cannot see the value yet
 
    x.commit();                         // first connection commits transaction
 
    r2.reset();                         // reuse the sql stream request
 
    ASSERT_EQ(r2.exec_select(), 1);     // now the value can be seen
 
    x.begin();
    r.clear();
    r.sql() << "insert into t values(45678);";
    r.exec();
    x.abort();                          // throw away this transaction
 
    r.clear();
    r.sql() << "select * from t where a is 45678;";
    ASSERT_EQ(r.exec_select(), 0);                      // it was rolled back
 
 
    r2.clear();
    r2.sql()    << "insert into t values(45678);";
    ASSERT_THROW(r2.exec(), runtime_error);             // illegal for read-only db connection
}