Added *Parser unit tests

Author: staabm

tests/PHPStan/Parser/ParserTest.php

@@ -0,0 +1,69 @@
+<?php declare(strict_types = 1);
+
+namespace PHPStan\Parser;
+
+use PHPStan\Testing\PHPStanTestCase;
+use PHPStan\TrinaryLogic;
+
+/**
+ * @covers \PHPStan\Parser\RichParser
+ * @covers \PHPStan\Parser\SimpleParser
+ */
+class ParserTest extends PHPStanTestCase
+{
+
+	public function dataVariadicCallLikes(): iterable
+	{
+		yield [
+			__DIR__ . '/data/variadic-functions.php',
+			VariadicFunctionsVisitor::ATTRIBUTE_NAME,
+			[
+				'VariadicFunctions\variadic_fn1' => TrinaryLogic::createYes(),
+				'VariadicFunctions\nonvariadic' => TrinaryLogic::createNo(),
+				'VariadicFunctions\maybe_variadic_fn1' => TrinaryLogic::createNo(),
+			],
+		];
+
+		yield [
+			__DIR__ . '/data/variadic-methods.php',
+			VariadicMethodsVisitor::ATTRIBUTE_NAME,
+			[
+				'VariadicMethod\X' => [
+					'non_variadic_fn1' => TrinaryLogic::createNo(),
+					'variadic_fn1' => TrinaryLogic::createNo(), // variadicness later on detected via reflection
+				],
+			],
+		];
+	}
+
+	/**
+	 * @dataProvider dataVariadicCallLikes
+	 * @param array<string, TrinaryLogic>|array<string, array<string, TrinaryLogic>> $expectedVariadics
+	 * @throws ParserErrorsException
+	 */
+	public function testSimpleParserVariadicCallLikes(string $file, string $attributeName, array $expectedVariadics): void
+	{
+		/** @var RichParser $parser */
+		$parser = self::getContainer()->getService('currentPhpVersionSimpleParser');
+		$ast = $parser->parseFile($file);
+		$variadics = $ast[0]->getAttribute($attributeName);
+		$this->assertIsArray($variadics);
+		$this->assertSame($expectedVariadics, $variadics);
+	}
+
+	/**
+	 * @dataProvider dataVariadicCallLikes
+	 * @param array<string, TrinaryLogic>|array<string, array<string, TrinaryLogic>> $expectedVariadics
+	 * @throws ParserErrorsException
+	 */
+	public function testRichParserVariadicCallLikes(string $file, string $attributeName, array $expectedVariadics): void
+	{
+		/** @var RichParser $parser */
+		$parser = self::getContainer()->getService('currentPhpVersionRichParser');
+		$ast = $parser->parseFile($file);
+		$variadics = $ast[0]->getAttribute($attributeName);
+		$this->assertIsArray($variadics);
+		$this->assertSame($expectedVariadics, $variadics);
+	}
+
+}

tests/PHPStan/Parser/data/variadic-functions.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace VariadicFunctions;
+
+function variadic_fn1(...$v) {
+}
+
+function nonvariadic()
+{
+}
+
+if (rand(0,1)) {
+	function maybe_variadic_fn1($v)
+	{
+	}
+} else {
+	function maybe_variadic_fn1(...$v)
+	{
+	}
+}
+
+(function() {})();
+
+$y = 1;
+$fn2 = function ($x) use ($y) {
+	return $x + $y;
+};

tests/PHPStan/Parser/data/variadic-methods.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace VariadicMethod;
+
+class X {
+
+	function non_variadic_fn1($v) {
+	}
+
+	function variadic_fn1(...$v) {
+	}
+}
+
+
+$x = new class {
+	function non_variadic_fn1($v) {
+	}
+
+	function variadic_fn1(...$v) {
+	}
+};