/**
* @dataProvider syntaxErrorArithmeticProvider
*
* @param $expression string
* @param $description string
*/
public function test_syntaxErrorArithmetic_EvaluateAst_ThrowsException($expression, $description)
{
$parser = new Parser();
$evaluator = new AstEvaluator();
$evaluator->setVariableEvaluatorCallback(function ($options) {
return $options['val'];
});
try {
$parser->parse($expression);
} catch (Exception $e) {
return;
}
$this->fail('Expected exception, but parsing succeeded for test: ' . $description);
}
public function createFormulaAction($formula, $nid, DateTime $start, DateTime $end, $resolution, $padding)
{
$parser = new Parser();
$ast = $parser->parse($formula);
$astEvaluator = new AstEvaluator();
$astEvaluator->setPaddingValue($padding);
$astEvaluator->setVariableEvaluatorCallback(function ($options) use($nid, $start, $end, $resolution, $padding) {
if (!isset($options['sid'])) {
throw new Exception('sid was not specified in variable. Need this to determine which sensor to get for the calculation of the formula.');
}
if (!isset($options['agg'])) {
throw new Exception('agg was not specified in variable. Need this in order to aggregate up to the correct resolution before calculating formula.');
}
$pipeline = new Pipeline();
return $pipeline->run([new Find($this->conn, $options['sid'], $nid, $start, $end), new RollupTime($resolution, $options['agg'], $padding), new Pad($resolution, $start, $end, $padding)])->vals;
});
return new Formula($ast, $astEvaluator);
}
public function test_AddTwoSeriesAndAConstant_FormulaAction_RetrieveSum()
{
$formula = '[sid=0] + [sid=1] + 5';
$vals1 = [(new DateTime('2015-12-05 00:00:00'))->getTimestamp() => 100, (new DateTime('2015-12-05 01:00:00'))->getTimestamp() => 200];
$vals2 = [(new DateTime('2015-12-05 00:00:00'))->getTimestamp() => 1000, (new DateTime('2015-12-05 01:00:00'))->getTimestamp() => 2000];
$expected = ['2015-12-05 00:00:00' => 1105, '2015-12-05 01:00:00' => 2205];
$seriesList = [];
$seriesList[] = new Series($vals1);
$seriesList[] = new Series($vals2);
$parser = new Parser();
$ast = $parser->parse($formula);
$astEvaluator = new AstEvaluator();
$astEvaluator->setPaddingValue(false);
$astEvaluator->setVariableEvaluatorCallback(function ($options) use($seriesList) {
$series = $seriesList[$options['sid']];
return $series->vals;
});
$convert = new ConvertToDateStringKeys();
$action = new Formula($ast, $astEvaluator);
$output = $action->run();
$output = $convert->run($output);
$this->assertEquals($expected, $output);
}