private static void AssertParsesTo(string expected, string query)
{
// Verify Parse
IExpression expression = ExpressionParser.ParseExpression(query);
string actual = expression.ToString();
Assert.Equal(expected, actual);
// Verify Expression.ToString() value parses back to itself correctly
expression = ExpressionParser.ParseExpression(actual);
Assert.Equal(actual, expression.ToString());
}
private static void Run <T>(int expectedCount, string query, IList <T> values, Func <TermExpression, IExpressionEvaluator <T> > converter)
{
// Parse the Query
IExpression expression = ExpressionParser.ParseExpression(query);
// Build an Evaluator against the int array
IExpressionEvaluator <T> evaluator = expression.ToEvaluator <T>(converter);
// Ask for matches from the array
BitArray matches = new BitArray(values.Count);
evaluator.Evaluate(values, matches);
// Verify the match count is correct
Assert.Equal(expectedCount, matches.TrueCount());
}
private void AssertThrows(string query)
{
Assert.Throws <QueryParseException>(() => ExpressionParser.ParseExpression(query));
}
