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mirror of https://github.com/danog/psalm.git synced 2024-11-26 20:34:47 +01:00
psalm/tests/TypeTest.php
2016-06-16 18:52:12 -04:00

1160 lines
29 KiB
PHP

<?php
namespace CodeInspector\Tests;
use CodeInspector\Type;
use PhpParser;
use PhpParser\ParserFactory;
use PHPUnit_Framework_TestCase;
class TypeTest extends PHPUnit_Framework_TestCase
{
protected static $_parser;
public static function setUpBeforeClass()
{
self::$_parser = (new ParserFactory)->create(ParserFactory::PREFER_PHP7);
}
public function testReconciliation()
{
$this->assertEquals('Object', \CodeInspector\TypeChecker::reconcileTypes('!null', ['Object']));
$this->assertEquals('Object', \CodeInspector\TypeChecker::reconcileTypes('!null', ['Object', 'null']));
$this->assertEquals('Object|false', \CodeInspector\TypeChecker::reconcileTypes('!null', ['Object', 'false']));
$this->assertEquals('Object', \CodeInspector\TypeChecker::reconcileTypes('!empty', ['Object']));
$this->assertEquals('Object', \CodeInspector\TypeChecker::reconcileTypes('!empty', ['Object', 'null']));
$this->assertEquals('Object', \CodeInspector\TypeChecker::reconcileTypes('!empty', ['Object', 'false']));
$this->assertEquals('null', \CodeInspector\TypeChecker::reconcileTypes('null', ['Object', 'null']));
$this->assertEquals('null', \CodeInspector\TypeChecker::reconcileTypes('null', ['Object']));
$this->assertEquals('null', \CodeInspector\TypeChecker::reconcileTypes('null', ['Object', 'false']));
$this->assertEquals('null', \CodeInspector\TypeChecker::reconcileTypes('empty', ['Object']));
$this->assertEquals('false', \CodeInspector\TypeChecker::reconcileTypes('empty', ['Object', 'false']));
$this->assertEquals('false', \CodeInspector\TypeChecker::reconcileTypes('empty', ['Object', 'bool']));
$this->assertEquals('bool', \CodeInspector\TypeChecker::reconcileTypes('!Object', ['Object', 'bool']));
$this->assertEquals('Object', \CodeInspector\TypeChecker::reconcileTypes('Object', ['Object', 'bool']));
$this->assertEquals('null', \CodeInspector\TypeChecker::reconcileTypes('!Object', ['Object', 'null']));
$this->assertEquals('ObjectA', \CodeInspector\TypeChecker::reconcileTypes('ObjectA', ['ObjectA', 'ObjectB']));
$this->assertEquals('ObjectB', \CodeInspector\TypeChecker::reconcileTypes('!ObjectA', ['ObjectA', 'ObjectB']));
$this->assertEquals('mixed', \CodeInspector\TypeChecker::reconcileTypes('!empty', ['mixed']));
$this->assertEquals('mixed', \CodeInspector\TypeChecker::reconcileTypes('!null', ['mixed']));
$this->assertEquals('mixed', \CodeInspector\TypeChecker::reconcileTypes('mixed', ['mixed']));
}
/**
* @expectedException CodeInspector\CodeException
*/
public function testNullableMethodCall()
{
$stmts = self::$_parser->parse('<?php
class A {
public function foo() {}
}
class B {
public function bar(A $a = null) {
$a->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithTernaryGuard()
{
$stmts = self::$_parser->parse('<?php
class A {
public function foo() {}
}
class B {
public function bar(A $a = null) {
$b = $a ? $a->foo() : null;
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithTernaryIfNullGuard()
{
$stmts = self::$_parser->parse('<?php
class A {
public function foo() {}
}
class B {
public function bar(A $a = null) {
$b = $a === null ? null : $a->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithTernaryEmptyGuard()
{
$stmts = self::$_parser->parse('<?php
class A {
public function foo() {}
}
class B {
public function bar(A $a = null) {
$b = empty($a) ? null : $a->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithTernaryIsNullGuard()
{
$stmts = self::$_parser->parse('<?php
class A {
public function foo() {}
}
class B {
public function bar(A $a = null) {
$b = is_null($a) ? null : $a->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithIfGuard()
{
$stmts = self::$_parser->parse('<?php
class A {
public function foo() {}
}
class B {
public function bar(A $a = null) {
if ($a) {
$a->foo();
}
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
/**
* @expectedException CodeInspector\CodeException
*/
public function testNullableMethodCallWithThis()
{
$stmts = self::$_parser->parse('<?php
class A {
public function foo() {}
}
class B {
public function bar(A $a = null) {
$this->a = $a;
$this->a->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithTernaryGuardWithThis()
{
$stmts = self::$_parser->parse('<?php
class A {
public function foo() {}
}
class B {
public function bar(A $a = null) {
$this->a = $a;
$b = $this->a ? $this->a->foo() : null;
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithTernaryIfNullGuardWithThis()
{
$stmts = self::$_parser->parse('<?php
class A {
public function foo() {}
}
class B {
public function bar(A $a = null) {
$this->a = $a;
$b = $this->a === null ? null : $this->a->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithIfGuardWithThis()
{
$stmts = self::$_parser->parse('<?php
class A {
public function foo() {}
}
class B {
public function bar(A $a = null) {
$this->a = $a;
if ($this->a) {
$this->a->foo();
}
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
/**
* @expectedException CodeInspector\CodeException
*/
public function testNullableMethodWithWrongIfGuard()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class Two {
public function foo() {}
}
class B {
public function bar(One $one = null, Two $two = null) {
if ($one) {
$two->foo();
}
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithExceptionThrown()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class B {
public function bar(One $one = null) {
if (!$one) {
throw new Exception();
}
$one->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithRedefinitionAndElse()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class B {
public function bar(One $one = null) {
if (!$one) {
$one = new One();
}
else {
$one->two = 3;
}
$one->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
/**
* @expectedException CodeInspector\CodeException
*/
public function testNullableMethodWithWrongBooleanIfGuard()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class Two {
public function foo() {}
}
class B {
public function bar(One $one = null, Two $two = null) {
if ($one || $two) {
$two->foo();
}
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithBooleanIfGuard()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class Two {
public function foo() {}
}
class B {
public function bar(One $one = null, Two $two = null) {
if ($one && $two) {
$two->foo();
}
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithNonNullBooleanIfGuard()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class Two {
public function foo() {}
}
class B {
public function bar(One $one = null, Two $two = null) {
if ($one !== null && $two) {
$one->foo();
}
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithNonNullBooleanIfGuardAndBooleanAnd()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class Two {
public function foo() {}
}
class B {
public function bar(One $one = null, Two $two = null) {
if ($one !== null && ($two || 1 + 1 === 3)) {
$one->foo();
}
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodInConditionWithIfGuardBefore()
{
$stmts = self::$_parser->parse('<?php
class One {
public $a;
public function foo() {}
}
class Two {
public function foo() {}
}
class B {
public function bar(One $one = null, Two $two = null) {
if ($one === null) {
return;
}
if (!$one->a && $one->foo()) {
// do something
}
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
/**
* @expectedException CodeInspector\CodeException
*/
public function testNullableMethodWithWrongIfGuardBefore()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class Two {
public function foo() {}
}
class B {
public function bar(One $one = null, Two $two = null) {
if ($two === null) {
return;
}
$one->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithBooleanIfGuardBefore()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class Two {
public function foo() {}
}
class B {
public function bar(One $one = null, Two $two = null) {
if ($one === null || $two === null) {
return;
}
$one->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
/**
* @expectedException CodeInspector\CodeException
*/
public function testNullableMethodWithWrongBooleanIfGuardBefore()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class Two {
public function foo() {}
}
class B {
public function bar(One $one = null, Two $two = null) {
if ($one === null && $two === null) {
return;
}
$one->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithGuardedRedefinition()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class B {
public function bar(One $one = null) {
if ($one === null) {
$one = new One();
}
$one->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithGuardedRedefinitionInElse()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class B {
public function bar(One $one = null) {
if ($one) {
// do nothing
}
else {
$one = new One();
}
$one->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testMethodWithMeaninglessCheck()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class B {
public function bar(One $one) {
if (!$one) {
// do nothing
}
$one->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
/**
* @expectedException CodeInspector\CodeException
*/
public function testNullableMethodWithGuardedNestedIncompleteRedefinition()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class Two {
public function foo() {}
}
class B {
public function bar(One $one = null, Two $two = null) {
$a = 4;
if ($one === null) {
if ($a === 4) {
$one = new One();
}
}
$one->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithGuardedNestedRedefinition()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class Two {
public function foo() {}
}
class B {
public function bar(One $one = null) {
$a = 4;
if ($one === null) {
if ($a === 4) {
$one = new One();
}
else {
$one = new One();
}
}
$one->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithGuardedSwitchRedefinition()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class B {
public function bar(One $one = null) {
$a = 4;
if ($one === null) {
switch ($a) {
case 4:
$one = new One();
break;
default:
$one = new One();
break;
}
}
$one->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithGuardedNestedRedefinitionWithReturn()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class B {
public function bar(One $one = null) {
$a = 4;
if ($one === null) {
if ($a === 4) {
$one = new One();
return;
}
else {
$one = new One();
}
}
$one->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithGuardedNestedRedefinitionWithElseReturn()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class B {
public function bar(One $one = null) {
$a = 4;
if ($one === null) {
if ($a === 4) {
$one = new One();
}
else {
$one = new One();
return;
}
}
$one->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
/**
* @expectedException CodeInspector\CodeException
*/
public function testNullableMethodWithGuardedNestedRedefinitionWithUselessElseReturn()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class B {
public function bar(One $one = null) {
$a = 4;
if ($one === null) {
if ($a === 4) {
$one = new One();
}
else if ($a === 3) {
// do nothing
}
else {
$one = new One();
return;
}
}
$one->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithGuardedNestedRedefinitionWithElseifReturn()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class B {
public function bar(One $one = null) {
$a = 4;
if ($one === null) {
if ($a === 4) {
$one = new One();
}
else if ($a === 3) {
// do nothing
return;
}
else {
$one = new One();
}
}
$one->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithGuardedSwitchBreak()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class B {
public function bar(One $one = null) {
$a = 4;
switch ($a) {
case 4:
if ($one === null) {
break;
}
$one->foo();
break;
}
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testNullableMethodWithGuardedRedefinitionOnThis()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class B {
public function bar(One $one = null) {
$this->one = $one;
if ($this->one === null) {
$this->one = new One();
}
$this->one->foo();
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testArrayUnionTypeAssertion()
{
$stmts = self::$_parser->parse('<?php
/** @var array|null */
$ids = (1 + 1 === 2) ? [] : null;
if ($ids === null) {
$ids = [];
}
foreach ($ids as $id) {
}
');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testArrayUnionTypeAssertionWithIsArray()
{
$stmts = self::$_parser->parse('<?php
/** @var array|null */
$ids = (1 + 1 === 2) ? [] : null;
if (!is_array($ids)) {
$ids = [];
}
foreach ($ids as $id) {
}
');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testVariableReassignment()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class Two {
public function bar() {}
}
$one = new One();
$one = new Two();
$one->bar();
');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testVariableReassignmentInIf()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class Two {
public function bar() {}
}
$one = new One();
if (1 + 1 === 2) {
$one = new Two();
$one->bar();
}
');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
/**
* @expectedException CodeInspector\CodeException
*/
public function testVariableReassignmentInIfWithOutsideCall()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class Two {
public function bar() {}
}
$one = new One();
if (1 + 1 === 2) {
$one = new Two();
$one->bar();
}
$one->bar();
');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testUnionTypeFlow()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class Two {
public function bar() {}
}
class Three {
public function baz() {}
}
/** @var One|Two|Three|null */
$var = null;
if ($var instanceof One) {
$var->foo();
}
else {
if ($var instanceof Two) {
$var->bar();
}
else if ($var) {
$var->baz();
}
}
');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testUnnecessaryInstanceof()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class Two {
public function bar() {}
}
class Three {
public function baz() {}
}
$var = new One();
if ($var instanceof One) {
$var->foo();
}
');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
/**
* @expectedException CodeInspector\CodeException
*/
public function testUnNegatableInstanceof()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo() {}
}
class Two {
public function bar() {}
}
class Three {
public function baz() {}
}
$var = new One();
if ($var instanceof One) {
$var->foo();
}
else {
// do something
}
');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testTypeAdjustment()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo(){
$var = 0;
if (5 + 3 === 8) {
$var = "hello";
}
return $var;
}
}
');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$stmts = $file_checker->check();
$method_stmts = $stmts[0]->stmts[0]->stmts;
$return_stmt = array_pop($method_stmts);
$this->assertSame('int|string', (string) $return_stmt->inferredType);
}
public function testTypeMixedAdjustment()
{
$stmts = self::$_parser->parse('<?php
class One {
public function foo(){
$var = 0;
$arr = ["hello"];
if (5 + 3 === 8) {
$var = $arr[0];
}
return $var;
}
}
');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$stmts = $file_checker->check();
$method_stmts = $stmts[0]->stmts[0]->stmts;
$return_stmt = array_pop($method_stmts);
$this->assertSame('mixed', (string) $return_stmt->inferredType);
}
public function testSwitchVariableWithContinue()
{
$stmts = self::$_parser->parse('<?php
class B {
public function bar() {
foreach ([\'a\', \'b\', \'c\'] as $letter) {
switch ($letter) {
case \'a\':
$foo = 1;
break;
case \'b\':
$foo = 2;
break;
default:
continue;
}
$moo = $foo;
}
}
}');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
}
public function testTryCatchVar()
{
$stmts = self::$_parser->parse('<?php
$worked = true;
try {
// something
}
catch (\Exception $e) {
$worked = false;
}
if ($worked) {
}
');
$file_checker = new \CodeInspector\FileChecker('somefile.php', $stmts);
$file_checker->check();
$conditional = $stmts[2]->cond;
$this->assertSame('bool', (string) $conditional->inferredType);
}
}