PHP Assert

Assertion library done right for modern PHP and static analyzer friendly.

# Installation

The library can be installed via composer.

composer require xynha/php-assert

# Why another assertion library?

The main reason is I need a flexible assertion library that can be used:

1. to throw custom exception and/or custom message,
2. without throwing an exception, and
3. to execute a callback (if needed).

# Usage

Case 1: throw default exception and default message

// will throw InvalidArgumentException and default message
Assert::isTrue($condition);

Case 2: throw default exception and a custom message

// will throw InvalidArgumentException and custom message
Assert::isTrue($condition, null, 'Custom message');

Case 3: throw custom exception and default message

// will throw UnexpectedValueException and default message
Assert::isTrue($condition, UnexpectedValueException::class);

Case 4: throw custom exception and custom message

// will throw UnexpectedValueException and custom message
Assert::isTrue($condition, UnexpectedValueException::class, 'Custom message');

Case 5: do not throw an exception

if (Assert::isTrue($condition, false)) {
  return;
}

# List of assertion functions

Features are still under development. Feel free to request some features.

Note:

• $handler is optional and can accept null, throwable, or false value (see usage above).
• $msg is optional custom exception message.

## Type checking

isBool($value, $handler, string $msg) : bool;

isInt($value, $handler, string $msg) : bool;

isFloat($value, $handler, string $msg) : bool;

isNumeric($value, $handler, string $msg) : bool;

isString($value, $handler, string $msg) : bool;

isArray($value, $handler, string $msg) : bool;

isIterable($value, $handler, string $msg) : bool;

isObject($value, $handler, string $msg) : bool;

isCallable($value, $handler, string $msg) : bool;

isResource($value, $handler, string $msg) : bool;

isNull($value, $handler, string $msg) : bool;

isNotNull($value, $handler, string $msg) : bool;

isScalar($value, $handler, string $msg) : bool;

NOTE:

• is_countable currently is not supported (require PHP >= 7.3).

## Boolean assertions

isTrue(bool $value, $handler, string $msg) : bool;

isFalse(bool $value, $handler, string $msg) : bool;

# Contributing

All form of contributions are welcome. You can report issues, fork the repo and submit pull request.

For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.

# License

Released under Apache-2.0 License. See LICENSE file for more details.

   Copyright 2020 Asis Pattisahusiwa

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.