1
0
mirror of https://github.com/danog/psalm.git synced 2024-11-30 04:39:00 +01:00
psalm/tests/TypeReconciliation/ValueTest.php

986 lines
31 KiB
PHP
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<?php
namespace Psalm\Tests\TypeReconciliation;
use Psalm\Internal\RuntimeCaches;
class ValueTest extends \Psalm\Tests\TestCase
{
use \Psalm\Tests\Traits\InvalidCodeAnalysisTestTrait;
use \Psalm\Tests\Traits\ValidCodeAnalysisTestTrait;
public function setUp() : void
{
RuntimeCaches::clearAll();
$this->file_provider = new \Psalm\Tests\Internal\Provider\FakeFileProvider();
$this->project_analyzer = new \Psalm\Internal\Analyzer\ProjectAnalyzer(
new \Psalm\Tests\TestConfig(),
new \Psalm\Internal\Provider\Providers(
$this->file_provider,
new \Psalm\Tests\Internal\Provider\FakeParserCacheProvider()
)
);
$this->project_analyzer->setPhpVersion('7.3');
}
/**
* @return iterable<string,array{string,assertions?:array<string,string>,error_levels?:string[]}>
*/
public function providerValidCodeParse(): iterable
{
return [
'whileCountUpdate' => [
'<?php
$array = [1, 2, 3];
while (rand(1, 10) === 1) {
$array[] = 4;
$array[] = 5;
$array[] = 6;
}
if (count($array) === 7) {}',
],
'tryCountCatch' => [
'<?php
$errors = [];
try {
if (rand(0, 1)) {
throw new Exception("bad");
}
} catch (Exception $e) {
$errors[] = $e;
}
if (count($errors) !== 0) {
echo "Errors";
}',
],
'ternaryDifferentString' => [
'<?php
$foo = rand(0, 1) ? "bar" : "bat";
if ($foo === "bar") {}
if ($foo !== "bar") {}
if (rand(0, 1)) {
$foo = "baz";
}
if ($foo === "baz") {}
if ($foo !== "bat") {}',
],
'ifDifferentString' => [
'<?php
$foo = "bar";
if (rand(0, 1)) {
$foo = "bat";
} elseif (rand(0, 1)) {
$foo = "baz";
}
$bar = "bar";
$baz = "baz";
if ($foo === "bar") {}
if ($foo !== "bar") {}
if ($foo === "baz") {}
if ($foo === $bar) {}
if ($foo !== $bar) {}
if ($foo === $baz) {}',
],
'ifThisOrThat' => [
'<?php
$foo = "bar";
if (rand(0, 1)) {
$foo = "bat";
} elseif (rand(0, 1)) {
$foo = "baz";
}
if ($foo === "baz" || $foo === "bar") {}',
],
'ifDifferentNullableString' => [
'<?php
$foo = null;
if (rand(0, 1)) {
$foo = "bar";
}
$bar = "bar";
if ($foo === "bar") {}
if ($foo !== "bar") {}',
],
'whileIncremented' => [
'<?php
$i = 1;
$j = 2;
while (rand(0, 1)) {
if ($i === $j) {}
$i++;
}',
],
'checkStringKeyValue' => [
'<?php
$foo = [
"0" => 3,
"1" => 4,
"2" => 5,
];
function takesInt(int $s) : void {}
foreach ($foo as $i => $b) {
takesInt($i);
}',
],
'getValidIntStringOffset' => [
'<?php
$foo = [
"0" => 3,
"1" => 4,
"2" => 5,
];
$a = "2";
echo $foo["2"];
echo $foo[$a];',
],
'checkStringKeyValueAfterKnownIntStringOffset' => [
'<?php
$foo = [
"0" => 3,
"1" => 4,
"2" => 5,
];
$a = "2";
$foo[$a] = 6;
function takesInt(int $s) : void {}
foreach ($foo as $i => $b) {
takesInt($i);
}',
],
'regularComparison1' => [
'<?php
function foo(string $s1, string $s2, ?int $i) : string {
if ($s1 !== $s2) {
return $s1;
}
return $s2;
}',
],
'regularComparison2' => [
'<?php
function foo(string $s1, string $s2) : string {
if ($s1 !== "hello") {
if ($s1 !== "goodbye") {
return $s1;
}
}
return $s2;
}',
],
'regularComparison3' => [
'<?php
class A {
const B = 1;
const C = 2;
}
function foo(string $s1, string $s2, ?int $i) : string {
if ($i !== A::B && $i !== A::C) {}
return $s2;
}',
],
'regularComparisonOnPossiblyNull' => [
'<?php
/** @psalm-ignore-nullable-return */
function generate() : ?string {
return rand(0, 1000) ? "hello" : null;
}
function foo() : string {
$str = generate();
if ($str[0] === "h") {
return $str;
}
return "hello";
}',
],
'incrementAndCheck' => [
'<?php
$i = 0;
if (rand(0, 1)) $i++;
if ($i === 1) {}',
],
'incrementInClosureAndCheck' => [
'<?php
$i = 0;
$a = function() use (&$i) : void {
if (rand(0, 1)) {
$i++;
}
};
$a();
if ($i === 0) {}',
'assertions' => [],
'error_levels' => ['MixedOperand', 'MixedAssignment'],
],
'incrementMixedCall' => [
'<?php
function foo($f) : void {
$i = 0;
$f->add(function() use (&$i) : void {
if (rand(0, 1)) $i++;
});
if ($i === 0) {}
}',
'assertions' => [],
'error_levels' => ['MissingParamType', 'MixedMethodCall', 'MixedOperand', 'MixedAssignment'],
],
'regularValueReconciliation' => [
'<?php
$s = rand(0, 1) ? "a" : "b";
if (rand(0, 1)) {
$s = "c";
}
if ($s === "a" || $s === "b") {
if ($s === "a") {}
}',
],
'moreValueReconciliation' => [
'<?php
$a = rand(0, 1) ? "a" : "b";
$b = rand(0, 1) ? "a" : "b";
$s = rand(0, 1) ? $a : $b;
if (rand(0, 1)) $s = "c";
if ($s === $a) {
} elseif ($s === $b) {}',
],
'negativeInts' => [
'<?php
class C {
const A = 1;
const B = -1;
}
const A = 1;
const B = -1;
$i = rand(0, 1) ? A : B;
if (rand(0, 1)) {
$i = 0;
}
if ($i === A) {
echo "here";
} elseif ($i === B) {
echo "here";
}
$i = rand(0, 1) ? C::A : C::B;
if (rand(0, 1)) {
$i = 0;
}
if ($i === C::A) {
echo "here";
} elseif ($i === C::B) {
echo "here";
}',
],
'falsyReconciliation' => [
'<?php
$s = rand(0, 1) ? 200 : null;
if (!$s) {}',
],
'redefinedIntInIfAndPossibleComparison' => [
'<?php
$s = rand(0, 1) ? 0 : 1;
if ($s && rand(0, 1)) {
if (rand(0, 1)) {
$s = 2;
}
}
if ($s == 2) {}',
],
'noEmpties' => [
'<?php
$context = \'a\';
while ( true ) {
if (rand(0, 1)) {
if (rand(0, 1)) {
exit;
}
$context = \'b\';
} elseif (rand(0, 1)) {
if ($context !== \'c\' && $context !== \'b\') {
exit;
}
$context = \'c\';
}
}',
],
'ifOrAssertionWithSwitch' => [
'<?php
function foo(string $s) : void {
switch ($s) {
case "a":
case "b":
case "c":
if ($s === "a" || $s === "b") {
throw new \InvalidArgumentException;
}
break;
}
}',
],
'inArrayAssertionProperty' => [
'<?php
class Foo
{
/**
* @psalm-var "a"|"b"
*/
private $s;
public function __construct(string $s)
{
if (!in_array($s, ["a", "b"], true)) {
throw new \InvalidArgumentException;
}
$this->s = $s;
}
}',
],
'inArrayAssertionWithSwitch' => [
'<?php
function foo(string $s) : void {
switch ($s) {
case "a":
case "b":
case "c":
if (in_array($s, ["a", "b"], true)) {
throw new \InvalidArgumentException;
}
break;
}
}',
],
'removeLiteralStringForNotIsString' => [
'<?php
function takesInt(int $i) : void {}
$f = ["a", "b", "c"];
$f[rand(0, 2)] = 5;
$i = rand(0, 2);
if (isset($f[$i]) && !is_string($f[$i])) {
takesInt($f[$i]);
}',
],
'removeLiteralIntForNotIsInt' => [
'<?php
function takesString(string $i) : void {}
$f = [0, 1, 2];
$f[rand(0, 2)] = "hello";
$i = rand(0, 2);
if (isset($f[$i]) && !is_int($f[$i])) {
takesString($f[$i]);
}',
],
'removeLiteralFloatForNotIsFloat' => [
'<?php
function takesString(string $i) : void {}
$f = [1.1, 1.2, 1.3];
$f[rand(0, 2)] = "hello";
$i = rand(0, 2);
if (isset($f[$i]) && !is_float($f[$i])) {
takesString($f[$i]);
}',
],
'coerceFromMixed' => [
'<?php
function type(int $b): void {}
/**
* @param mixed $a
*/
function foo($a) : void {
if ($a === 1 || $a === 2) {
type($a);
}
if (in_array($a, [1, 2], true)) {
type($a);
}
}',
],
'coerceFromString' => [
'<?php
/** @param "a"|"b" $b */
function type(string $b): void {}
function foo(string $a) : void {
if ($a === "a" || $a === "b") {
type($a);
}
}',
],
'coercePossibleOffset' => [
'<?php
class A {
const FOO = "foo";
const BAR = "bar";
const BAT = "bat";
const BAM = "bam";
/** @var self::FOO|self::BAR|self::BAT|null $s */
public $s;
public function isFooOrBar() : void {
$map = [
A::FOO => 1,
A::BAR => 1,
A::BAM => 1,
];
if ($this->s !== null && isset($map[$this->s])) {}
}
}',
],
'noRedundantConditionWithMixed' => [
'<?php
function foo($a) : void {
if ($a == "a") {
} else {
if ($a == "b" && rand(0, 1)) {}
}
}',
'assertions' => [],
'error_levels' => ['MissingParamType', 'MixedAssignment'],
],
'numericToStringComparison' => [
'<?php
/** @psalm-suppress MissingParamType */
function foo($s) : void {
if (is_numeric($s)) {
if ($s === 1) {}
}
}',
],
'newlineIssue' => [
'<?php
$a = "foo";
$b = "
";
$c = $a;
if (rand(0, 1)) {
$c = $b;
}
if ($c === $b) {}',
],
'dontChangeType' => [
'<?php
$x = 0;
$y = rand(0, 1);
$x++;
if ($x !== $y) {
chr($x);
}',
],
'dontChangeTypeInElse' => [
'<?php
/** @var 0|string */
$x = 0;
$y = rand(0, 1) ? 0 : 1;
if ($x !== $y) {
} else {
if (!is_string($x)) {
chr($x);
}
}
/** @var int|string */
$x = 0;
if ($x !== $y) {
} else {
if (!is_string($x)) {
chr($x);
}
}',
],
'convertNullArrayKeyToEmptyString' => [
'<?php
$a = [
1 => 1,
2 => 2,
null => "hello",
];
$b = $a[""];',
'assertions' => [
'$b' => 'string',
],
],
'yodaConditionalsShouldHaveSameOutput1' => [
'<?php
class Foo {
/**
* @var array{from:bool, to:bool}
*/
protected $things = ["from" => false, "to" => false];
public function foo(string ...$things) : void {
foreach ($things as $thing) {
if ($thing !== "from" && $thing !== "to") {
continue;
}
$this->things[$thing] = !$this->things[$thing];
}
}
}
',
],
'yodaConditionalsShouldHaveSameOutput2' => [
'<?php
class Foo {
/**
* @var array{from:bool, to:bool}
*/
protected $things = ["from" => false, "to" => false];
public function foo(string ...$things) : void {
foreach ($things as $thing) {
if ("from" !== $thing && "to" !== $thing) {
continue;
}
$this->things[$thing] = !$this->things[$thing];
}
}
}
',
],
'supportSingleLiteralType' => [
'<?php
class A {
/**
* @var string
* @psalm-var "easy"
*/
private $type = "easy";
}'
],
'typecastTrueToInt' => [
'<?php
/**
* @param 0|1 $int
*/
function foo(int $int) : void {
echo (string) $int;
}
foo((int) true);',
],
'typecastFalseToInt' => [
'<?php
/**
* @param 0|1 $int
*/
function foo(int $int) : void {
echo (string) $int;
}
foo((int) false);',
],
'typecastedBoolToInt' => [
'<?php
/**
* @param 0|1 $int
*/
function foo(int $int) : void {
echo (string) $int;
}
foo((int) ((bool) 2));',
],
'notEqualToEachOther' => [
'<?php
function example(object $a, object $b): bool {
if ($a !== $b && \get_class($a) === \get_class($b)) {
return true;
}
return false;
}'
],
'numericStringValue' => [
'<?php
/** @psalm-return numeric-string */
function makeNumeric() : string {
return "12.34";
}
/** @psalm-param numeric-string $string */
function consumeNumeric(string $string) : void {
\error_log($string);
}
consumeNumeric("12.34");'
],
'resolveScalarClassConstant' => [
'<?php
class PaymentFailure {
const NO_CLIENT = "no_client";
const NO_CARD = "no_card";
}
/**
* @return PaymentFailure::NO_CARD|PaymentFailure::NO_CLIENT
*/
function something() {
if (rand(0, 1)) {
return PaymentFailure::NO_CARD;
}
return PaymentFailure::NO_CLIENT;
}
function blah(): void {
$test = something();
if ($test === PaymentFailure::NO_CLIENT) {}
}'
],
'removeNullAfterLessThanZero' => [
'<?php
function fcn(?int $val): int {
if ($val < 0) {
return $val;
}
return 5;
}',
],
'numericStringCastFromInt' => [
'<?php
/**
* @return numeric-string
*/
function makeNumStringFromInt(int $v) {
return (string) $v;
}',
],
'numericStringCastFromFloat' => [
'<?php
/**
* @return numeric-string
*/
function makeNumStringFromFloat(float $v) {
return (string) $v;
}'
],
'compareNegatedValue' => [
'<?php
$i = rand(-1, 5);
if (!($i > 0)) {
echo $i;
}',
],
'refinePositiveInt' => [
'<?php
$f = rand(0, 1) ? -1 : 1;
if ($f > 0) {}'
],
'assignOpThenCheck' => [
'<?php
$data = ["e" => 0];
if (rand(0, 1)) {
$data["e"]++;
}
if ($data["e"] > 0) {}'
],
'compareToNullImplicitly' => [
'<?php
final class Foo {
public const VALUE_ANY = null;
public const VALUE_ONE = "one";
/** @return self::VALUE_* */
public static function getValues() {
return rand(0, 1) ? null : self::VALUE_ONE;
}
}
$data = Foo::getValues();
if ($data === Foo::VALUE_ANY) {
$data = "default";
}
echo strlen($data);'
],
'negateValueInUnion' => [
'<?php
function f(): int {
$ret = 0;
for ($i = 20; $i >= 0; $i--) {
$ret = ($ret === 10) ? 1 : $ret + 1;
}
return $ret;
}'
],
'inArrayPreserveNull' => [
'<?php
function x(?string $foo): void {
if (!in_array($foo, ["foo", "bar", null], true)) {
throw new Exception();
}
if ($foo) {}
}',
],
'allowCheckOnPositiveNumericInverse' => [
'<?php
function foo(int $a): void {
if (false === ($a > 1)){}
}'
],
];
}
/**
* @return iterable<string,array{string,error_message:string,2?:string[],3?:bool,4?:string}>
*/
public function providerInvalidCodeParse(): iterable
{
return [
'neverEqualsType' => [
'<?php
$a = 4;
if ($a === 5) {
// do something
}',
'error_message' => 'TypeDoesNotContainType',
],
'alwaysIdenticalType' => [
'<?php
$a = 4;
if ($a === 4) {
// do something
}',
'error_message' => 'RedundantCondition',
],
'alwaysNotIdenticalType' => [
'<?php
$a = 4;
if ($a !== 5) {
// do something
}',
'error_message' => 'RedundantCondition',
],
'neverNotIdenticalType' => [
'<?php
$a = 4;
if ($a !== 4) {
// do something
}',
'error_message' => 'TypeDoesNotContainType',
],
'neverEqualsFloatType' => [
'<?php
$a = 4.0;
if ($a === 4.1) {
// do something
}',
'error_message' => 'TypeDoesNotContainType',
],
'alwaysIdenticalFloatType' => [
'<?php
$a = 4.1;
if ($a === 4.1) {
// do something
}',
'error_message' => 'RedundantCondition',
],
'alwaysNotIdenticalFloatType' => [
'<?php
$a = 4.0;
if ($a !== 4.1) {
// do something
}',
'error_message' => 'RedundantCondition',
],
'neverNotIdenticalFloatType' => [
'<?php
$a = 4.1;
if ($a !== 4.1) {
// do something
}',
'error_message' => 'TypeDoesNotContainType',
],
'ifImpossibleString' => [
'<?php
$foo = rand(0, 1) ? "bar" : "bat";
if ($foo === "baz") {}',
'error_message' => 'TypeDoesNotContainType',
],
'arrayOffsetImpossibleValue' => [
'<?php
$foo = [
"a" => 1,
"b" => 2,
];
if ($foo["a"] === 2) {}',
'error_message' => 'TypeDoesNotContainType',
],
'impossibleKeyInForeach' => [
'<?php
$foo = [
"0" => 3,
"1" => 4,
"2" => 5,
];
function takesInt(int $s) : void {}
foreach ($foo as $i => $b) {
if ($i === 3) {}
}',
'error_message' => 'TypeDoesNotContainType',
],
'impossibleValueInForeach' => [
'<?php
$foo = [
"0" => 3,
"1" => 4,
"2" => 5,
];
function takesInt(int $s) : void {}
foreach ($foo as $i => $b) {
if ($b === $i) {}
}',
'error_message' => 'TypeDoesNotContainType',
],
'invalidIntStringOffset' => [
'<?php
$foo = [
"0" => 3,
"1" => 4,
"2" => 5,
];
$a = "3";
echo $foo[$a];',
'error_message' => 'InvalidArrayOffset',
],
'noChangeToVariable' => [
'<?php
$i = 0;
$a = function() use ($i) : void {
$i++;
};
$a();
if ($i === 0) {}',
'error_message' => 'RedundantCondition',
],
'redefinedIntInIfAndImpossbleComparison' => [
'<?php
$s = rand(0, 1) ? 0 : 1;
if ($s && rand(0, 1)) {
if (rand(0, 1)) {
$s = 2;
}
}
if ($s == 3) {}',
'error_message' => 'TypeDoesNotContainType',
],
'badIfOrAssertionWithSwitch' => [
'<?php
function foo(string $s) : void {
switch ($s) {
case "a":
case "b":
case "c":
if ($s === "a" || $s === "b") {
throw new \InvalidArgumentException;
}
if ($s === "c") {}
}
}',
'error_message' => 'RedundantCondition',
],
'casedComparison' => [
'<?php
if ("C" === "c") {}',
'error_message' => 'TypeDoesNotContainType',
],
'compareValueTwice' => [
'<?php
$i = rand(-1, 5);
if ($i > 0 && $i > 0) {}',
'error_message' => 'RedundantCondition',
],
'numericStringCoerceToLiteral' => [
'<?php
/** @param "0"|"1" $s */
function foo(string $s) : void {}
function bar(string $s) : void {
if (is_numeric($s)) {
foo($s);
}
}',
'error_message' => 'ArgumentTypeCoercion'
],
];
}
}