Feature: Assert (PHPUnit 7.5+) In order to use PHPUnit safely As a Psalm user I need Psalm to typecheck asserts Background: Given I have the following code preamble """ foo = 1; """ When I run Psalm Then I see no errors Scenario: Assert::assertIsResource() Given I have the following code """ /** @psalm-suppress MixedAssignment */ $r = mixed(); Assert::assertIsResource($r); get_resource_type($r); """ When I run Psalm Then I see no errors Scenario: Assert::assertIsString() Given I have the following code """ /** @psalm-suppress MixedAssignment */ $s = mixed(); Assert::assertIsString($s); strlen($s); """ When I run Psalm Then I see no errors Scenario: Assert::assertIsScalar() Given I have the following code """ /** @psalm-suppress MixedAssignment */ $s = mixed(); Assert::assertIsScalar($s); // int|string|float|bool // all of the following should cause errors if (is_array($s)) {} if (is_resource($s)) {} if (is_object($s)) {} if (is_null($s)) {} """ When I run Psalm Then I see these errors | Type | Message | | DocblockTypeContradiction | Cannot resolve types for $s - docblock-defined type scalar does not contain array<%, mixed> | | DocblockTypeContradiction | Cannot resolve types for $s - docblock-defined type scalar does not contain resource | | DocblockTypeContradiction | Found a contradiction with a docblock-defined type when evaluating $s and trying to reconcile type 'scalar' to object | | DocblockTypeContradiction | Cannot resolve types for $s - docblock-defined type scalar does not contain null | Scenario: Assert::assertIsCallable() Given I have the following code """ /** @psalm-suppress MixedAssignment */ $s = mixed(); Assert::assertIsCallable($s); \Closure::fromCallable($s); """ When I run Psalm Then I see no errors Scenario: Assert::assertIsIterable() Given I have the following code """ /** @return iterable */ function () { /** @psalm-suppress MixedAssignment */ $s = mixed(); Assert::assertIsIterable($s); return $s; }; """ When I run Psalm Then I see no errors Scenario: Assert::assertIsNotArray() Given I have the following code """ $i = rand(0, 1) ? 1 : [1]; Assert::assertIsNotArray($i); substr("foo", $i); """ When I run Psalm Then I see no errors Scenario: Assert::assertIsNotBool() Given I have the following code """ $i = rand(0, 1) ? 1 : true; Assert::assertIsNotBool($i); substr("foo", $i); """ When I run Psalm Then I see no errors Scenario: Assert::assertIsNotFloat() Given I have the following code """ $i = rand(0, 1) ? 1 : 0.1; Assert::assertIsNotFloat($i); substr("foo", $i); """ When I run Psalm Then I see no errors Scenario: Assert::assertIsNotInt() Given I have the following code """ $a = rand(0, 1) ? 1 : [1]; Assert::assertIsNotInt($a); array_pop($a); """ When I run Psalm Then I see no errors Scenario: Assert::assertIsNotNumeric() Given I have the following code """ /** @return numeric|array */ function f() { return rand(0,1) ? 1 : [1]; } $a = f(); Assert::assertIsNotNumeric($a); array_pop($a); """ When I run Psalm Then I see no errors Scenario: Assert::assertIsNotObject() Given I have the following code """ $a = rand(0, 1) ? ((object)[]) : [1]; Assert::assertIsNotObject($a); array_pop($a); """ When I run Psalm Then I see no errors Scenario: Assert::assertIsNotResource() Given I have the following code """ $a = rand(0, 1) ? STDIN : [1]; Assert::assertIsNotResource($a); array_pop($a); """ When I run Psalm Then I see no errors Scenario: Assert::assertIsNotString() Given I have the following code """ $a = rand(0, 1) ? "foo" : [1]; Assert::assertIsNotString($a); array_pop($a); """ When I run Psalm Then I see no errors Scenario: Assert::assertIsNotScalar() Given I have the following code """ $a = rand(0, 1) ? "foo" : [1]; Assert::assertIsNotScalar($a); array_pop($a); """ When I run Psalm Then I see no errors Scenario: Assert::assertIsNotCallable() Given I have the following code """ /** @return callable|float */ function f() { return rand(0,1) ? 'f' : 1.1; } $a = f(); Assert::assertIsNotCallable($a); atan($a); """ When I run Psalm Then I see no errors Scenario: Assert::assertIsNotIterable() Given I have the following code """ /** @var string|iterable $s */ $s = rand(0, 1) ? "foo" : [1]; Assert::assertIsNotIterable($s); strlen($s); """ When I run Psalm Then I see no errors