add test case for narrow typed json_decode

Author: TomasVotruba

tests/PHPStan/Analyser/NodeScopeResolverTest.php

@@ -14,8 +14,13 @@ class NodeScopeResolverTest extends TypeInferenceTestCase
 
 	public function dataFileAsserts(): iterable
 	{
+<<<<<<< HEAD
 		require_once __DIR__ . '/data/implode.php';
 		yield from $this->gatherAssertTypes(__DIR__ . '/data/implode.php');
+=======
+		yield from $this->gatherAssertTypes(__DIR__ . '/data/json-decode/narrow_type.php');
+		yield from $this->gatherAssertTypes(__DIR__ . '/data/json-decode/narrow_type_with_force_array.php');
+>>>>>>> add test case for narrow typed json_decode
 
 		require_once __DIR__ . '/data/bug2574.php';
 

tests/PHPStan/Analyser/data/json-decode/narrow_type.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Analyser\JsonDecode;
+
+use function PHPStan\Testing\assertType;
+
+$value = json_decode('true');
+assertType('true', $value);
+
+$value = json_decode('1');
+assertType('1', $value);
+
+$value = json_decode('1.5');
+assertType('1.5', $value);
+
+$value = json_decode('false');
+assertType('false', $value);
+
+$value = json_decode('{}');
+assertType('stdClass', $value);
+
+$value = json_decode('[1, 2, 3]');
+assertType('array{1, 2, 3}', $value);

tests/PHPStan/Analyser/data/json-decode/narrow_type_with_force_array.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Analyser\JsonDecode;
+
+use function PHPStan\Testing\assertType;
+
+$value = json_decode('true', true);
+assertType('true', $value);
+
+$value = json_decode('1', true);
+assertType('1', $value);
+
+$value = json_decode('1.5', true);
+assertType('1.5', $value);
+
+$value = json_decode('false', true);
+assertType('false', $value);
+
+$value = json_decode('{}', true);
+assertType('array{}', $value);
+
+$value = json_decode('[1, 2, 3]', true);
+assertType('array{1, 2, 3}', $value);