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SqlQueryParserTests.cs
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205 lines (179 loc) · 7.79 KB
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using System.Collections.Generic;
using System.Data;
using System.Linq;
using NUnit.Framework;
namespace Npgsql.Tests;
class SqlQueryParserTests
{
[Test]
public void Parameter_simple()
{
var parameters = new NpgsqlParameter[] { new(":p1", "foo"), new(":p2", "foo") };
var result = ParseCommand("SELECT :p1, :p2", parameters).Single();
Assert.That(result.FinalCommandText, Is.EqualTo("SELECT $1, $2"));
Assert.That(result.PositionalParameters, Is.EquivalentTo(parameters));
}
[Test]
public void Parameter_name_with_dot()
{
var p = new NpgsqlParameter(":a.parameter", "foo");
var results = ParseCommand("INSERT INTO data (field_char5) VALUES (:a.parameter)", p);
Assert.That(results.Single().PositionalParameters.Single(), Is.SameAs(p));
}
[Test, Description("Checks several scenarios in which the SQL is supposed to pass untouched")]
[TestCase(@"SELECT to_tsvector('fat cats ate rats') @@ to_tsquery('cat & rat')", TestName="AtAt")]
[TestCase(@"SELECT 'cat'::tsquery @> 'cat & rat'::tsquery", TestName = "AtGt")]
[TestCase(@"SELECT 'cat'::tsquery <@ 'cat & rat'::tsquery", TestName = "AtLt")]
[TestCase(@"SELECT 'b''la'", TestName = "DoubleTicks")]
[TestCase(@"SELECT 'type(''m.response'')#''O''%'", TestName = "DoubleTicks2")]
[TestCase(@"SELECT 'abc'':str''a:str'", TestName = "DoubleTicks3")]
[TestCase(@"SELECT 1 FROM "":str""", TestName = "DoubleQuoted")]
[TestCase(@"SELECT 1 FROM 'yo'::str", TestName = "DoubleColons")]
[TestCase("SELECT $\u00ffabc0$literal string :str :int$\u00ffabc0 $\u00ffabc0$", TestName = "DollarQuotes")]
[TestCase("SELECT $$:str$$", TestName = "DollarQuotesNoTag")]
public void Untouched(string sql)
{
var results = ParseCommand(sql, new NpgsqlParameter(":param", "foo"));
Assert.That(results.Single().FinalCommandText, Is.EqualTo(sql));
Assert.That(results.Single().PositionalParameters, Is.Empty);
}
[Test]
[TestCase(@"SELECT 1<:param", TestName = "LessThan")]
[TestCase(@"SELECT 1>:param", TestName = "GreaterThan")]
[TestCase(@"SELECT 1<>:param", TestName = "NotEqual")]
[TestCase("SELECT--comment\r:param", TestName="LineComment")]
public void Parameter_gets_bound(string sql)
{
var p = new NpgsqlParameter(":param", "foo");
var results = ParseCommand(sql, p);
Assert.That(results.Single().PositionalParameters.Single(), Is.SameAs(p));
}
[Test, IssueLink("https://github.com/npgsql/npgsql/issues/1177")]
public void Parameter_gets_bound_non_ascii()
{
var p = new NpgsqlParameter("漢字", "foo");
var results = ParseCommand("SELECT @漢字", p);
Assert.That(results.Single().PositionalParameters.Single(), Is.SameAs(p));
}
[Test]
[TestCase(@"SELECT e'ab\'c:param'", TestName = "Estring")]
[TestCase(@"SELECT/*/* -- nested comment :int /*/* *//*/ **/*/*/*/1")]
[TestCase(@"SELECT 1,
-- Comment, @param and also :param
2", TestName = "LineComment")]
public void Parameter_does_not_get_bound(string sql)
{
var p = new NpgsqlParameter(":param", "foo");
var results = ParseCommand(sql, p);
Assert.That(results.Single().PositionalParameters, Is.Empty);
}
[Test]
public void Non_conforming_string()
{
var result = ParseCommand(@"SELECT 'abc\':str''a:str'").Single();
Assert.That(result.FinalCommandText, Is.EqualTo(@"SELECT 'abc\':str''a:str'"));
Assert.That(result.PositionalParameters, Is.Empty);
}
[Test]
public void Multiquery_with_parameters()
{
var parameters = new NpgsqlParameter[]
{
new("p1", DbType.String),
new("p2", DbType.String),
new("p3", DbType.String),
};
var results = ParseCommand("SELECT @p3, @p1; SELECT @p2, @p3", parameters);
Assert.That(results, Has.Count.EqualTo(2));
Assert.That(results[0].FinalCommandText, Is.EqualTo("SELECT $1, $2"));
Assert.That(results[0].PositionalParameters[0], Is.SameAs(parameters[2]));
Assert.That(results[0].PositionalParameters[1], Is.SameAs(parameters[0]));
Assert.That(results[1].FinalCommandText, Is.EqualTo("SELECT $1, $2"));
Assert.That(results[1].PositionalParameters[0], Is.SameAs(parameters[1]));
Assert.That(results[1].PositionalParameters[1], Is.SameAs(parameters[2]));
}
[Test]
public void No_output_parameters()
{
var p = new NpgsqlParameter("p", DbType.String) { Direction = ParameterDirection.Output };
Assert.That(() => ParseCommand("SELECT @p", p), Throws.Exception);
}
[Test]
public void Missing_parameter_is_ignored()
{
var results = ParseCommand("SELECT @p; SELECT 1");
Assert.That(results[0].FinalCommandText, Is.EqualTo("SELECT @p"));
Assert.That(results[1].FinalCommandText, Is.EqualTo("SELECT 1"));
Assert.That(results[0].PositionalParameters, Is.Empty);
Assert.That(results[1].PositionalParameters, Is.Empty);
}
[Test]
public void Consecutive_semicolons()
{
var results = ParseCommand(";;SELECT 1");
Assert.That(results, Has.Count.EqualTo(3));
Assert.That(results[0].FinalCommandText, Is.Empty);
Assert.That(results[1].FinalCommandText, Is.Empty);
Assert.That(results[2].FinalCommandText, Is.EqualTo("SELECT 1"));
}
[Test]
public void Trailing_semicolon()
{
var results = ParseCommand("SELECT 1;");
Assert.That(results, Has.Count.EqualTo(1));
Assert.That(results[0].FinalCommandText, Is.EqualTo("SELECT 1"));
}
[Test]
public void Empty()
{
var results = ParseCommand("");
Assert.That(results, Has.Count.EqualTo(1));
Assert.That(results[0].FinalCommandText, Is.Empty);
}
[Test]
public void Semicolon_in_parentheses()
{
var results = ParseCommand("CREATE OR REPLACE RULE test AS ON UPDATE TO test DO (SELECT 1; SELECT 1)");
Assert.That(results, Has.Count.EqualTo(1));
Assert.That(results[0].FinalCommandText, Is.EqualTo("CREATE OR REPLACE RULE test AS ON UPDATE TO test DO (SELECT 1; SELECT 1)"));
}
[Test]
public void Semicolon_after_parentheses()
{
var results = ParseCommand("CREATE OR REPLACE RULE test AS ON UPDATE TO test DO (SELECT 1); SELECT 1");
Assert.That(results, Has.Count.EqualTo(2));
Assert.That(results[0].FinalCommandText, Is.EqualTo("CREATE OR REPLACE RULE test AS ON UPDATE TO test DO (SELECT 1)"));
Assert.That(results[1].FinalCommandText, Is.EqualTo("SELECT 1"));
}
[Test]
public void Reduce_number_of_statements()
{
var parser = new SqlQueryParser();
var cmd = new NpgsqlCommand("SELECT 1; SELECT 2");
parser.ParseRawQuery(cmd);
Assert.That(cmd.InternalBatchCommands, Has.Count.EqualTo(2));
cmd.CommandText = "SELECT 1";
parser.ParseRawQuery(cmd);
Assert.That(cmd.InternalBatchCommands, Has.Count.EqualTo(1));
}
#if TODO
[Test]
public void Trim_whitespace()
{
_parser.ParseRawQuery(" SELECT 1\t", _params, _queries, standardConformingStrings: true);
Assert.That(_queries.Single().Sql, Is.EqualTo("SELECT 1"));
}
#endif
#region Setup / Teardown / Utils
List<NpgsqlBatchCommand> ParseCommand(string sql, params NpgsqlParameter[] parameters)
=> ParseCommand(sql, parameters, standardConformingStrings: true);
List<NpgsqlBatchCommand> ParseCommand(string sql, NpgsqlParameter[] parameters, bool standardConformingStrings)
{
var cmd = new NpgsqlCommand(sql);
cmd.Parameters.AddRange(parameters);
var parser = new SqlQueryParser();
parser.ParseRawQuery(cmd, standardConformingStrings);
return cmd.InternalBatchCommands;
}
#endregion
}