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Jordi Martinez
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PHP-Unit-Test Implements tests for chapter 9
Implements tests for Chapter 09
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‎README.md

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@@ -22,9 +22,10 @@ php -S localhost:8000
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## Dependencies
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In order to run tests you would need to install some external dependencies, like PHP Unit. To do so, as you learned in
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the Book, you use **Composer**. If you look into the composer.json file included, you would see the following dependencies:
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the Book, you use **Composer**. If you look into the __composer.json__ file included, you would see the following dependencies:
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- PHPUnit: it is the framework most used in the PHP community to run unit tests.
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- Symfony Dom Crawler: a library you would need to test the post of HTML forms to the web server. (you would not need this until
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Chapter 6).
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- Symfony CSS Selector: a library to filter the contents of HTML documents using HTML tags and CSS selectors.
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- Symfony CSS Selector: a library to filter the contents of HTML documents using HTML tags and CSS selectors.
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- Monolog: a library to handle logging.

‎app/Chapter08/Activity/all-errors-handler.php

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<?php
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$exceptionHandler = function (Throwable $e) {
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$message = sprintf('%s [%d]: %s', get_class($e), $e->getCode(), $e->getMessage());
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$msgLength = mb_strlen($message);
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$line = str_repeat('-', $msgLength);
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echo $line, PHP_EOL;
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echo $message, PHP_EOL;
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echo '> File: ', $e->getFile(), PHP_EOL;
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echo '> Line: ', $e->getLine(), PHP_EOL;
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echo '> Trace: ', PHP_EOL, $e->getTraceAsString(), PHP_EOL;
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echo $line, PHP_EOL;
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};
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$errorHandler = function (int $code, string $message, string $file, int $line) use ($exceptionHandler) {
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$exception = new ErrorException($message, $code, $code, $file, $line);
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$exceptionHandler($exception);
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if (in_array($code, [E_ERROR, E_RECOVERABLE_ERROR, E_USER_ERROR])) {
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exit(1);
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}
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};
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set_error_handler($errorHandler);
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set_exception_handler($exceptionHandler);

‎app/Chapter08/Activity/factorial.php

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<?php
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$exceptionHandler = function (Throwable $e) {
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static $fh;
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if (is_null($fh)) {
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$fh = fopen(__DIR__ . '/app.log', 'a');
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if (!$fh) {
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echo 'Unable to access the log file.', PHP_EOL;
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exit(1);
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}
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}
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$message = sprintf('%s [%d]: %s', get_class($e), $e->getCode(), $e->getMessage());
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$msgLength = mb_strlen($message);
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$line = str_repeat('-', $msgLength);
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$logMessage = sprintf(
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"%s\n%s\n> File: %s\n> Line: %d\n> Trace: %s\n%s\n",
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$line,
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$message,
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$e->getFile(),
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$e->getLine(),
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$e->getTraceAsString(),
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$line
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);
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fwrite($fh, $logMessage);
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};
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$errorHandler = function (int $code, string $message, string $file, int $line) use ($exceptionHandler) {
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$exception = new ErrorException($message, $code, $code, $file, $line);
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$exceptionHandler($exception);
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if (in_array($code, [E_ERROR, E_RECOVERABLE_ERROR, E_USER_ERROR])) {
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exit(1);
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}
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};
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set_error_handler($errorHandler);
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set_exception_handler($exceptionHandler);
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class NotANumber extends Exception
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{
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}
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class DecimalNumber extends Exception
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{
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}
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class NumberIsZeroOrNegative extends Exception
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{
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}
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function printError(string $message): void
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{
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echo '(!) ', $message, PHP_EOL;
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}
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function calculateFactorial($number): int
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{
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if (!is_numeric($number)) {
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throw new NotANumber(sprintf('%s is not a number.', $number));
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}
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$number = $number * 1;
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if (is_float($number)) {
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throw new DecimalNumber(sprintf('%s is decimal; integer is expected.', $number));
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}
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if ($number < 1) {
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throw new NumberIsZeroOrNegative(sprintf('Given %d while higher than zero is expected.', $number));
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}
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$factorial = 1;
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for ($i = 2; $i <= $number; $i++) {
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$factorial *= $i;
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}
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return $factorial;
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}
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$arguments = array_slice($argv, 1);
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if (!count($arguments)) {
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printError('At least one number is required.');
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} else {
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foreach ($arguments as $argument) {
79+
try {
80+
$factorial = calculateFactorial($argument);
81+
echo $argument, '! = ', $factorial, PHP_EOL;
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} catch (NotANumber | DecimalNumber | NumberIsZeroOrNegative $e) {
83+
printError(sprintf('[%s]: %s', get_class($e), $e->getMessage()));
84+
} catch (Throwable $e) {
85+
printError("Unexpected error occured for [$argument] input number.");
86+
$exceptionHandler($e);
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}
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}
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}

‎app/Chapter08/Exercise1/custom-handler.php

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<?php
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$errorHandler = function (int $code, string $message, string $file, int $line) {
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echo date(DATE_W3C), " :: $message, in [$file] on line [$line] (error code $code)", PHP_EOL;
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};
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set_error_handler($errorHandler, E_ALL);
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echo $width / $height, PHP_EOL;

‎app/Chapter08/Exercise10/all-errors-handler.php

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<?php
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$exceptionHandler = function (Throwable $e) {
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$message = sprintf('%s [%d]: %s', get_class($e), $e->getCode(), $e->getMessage());
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$msgLength = mb_strlen($message);
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$line = str_repeat('-', $msgLength);
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echo $line, PHP_EOL;
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echo $message, PHP_EOL;
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echo '> File: ', $e->getFile(), PHP_EOL;
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echo '> Line: ', $e->getLine(), PHP_EOL;
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echo '> Trace: ', PHP_EOL, $e->getTraceAsString(), PHP_EOL;
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echo $line, PHP_EOL;
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};
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$errorHandler = function (int $code, string $message, string $file, int $line) use ($exceptionHandler) {
16+
$exception = new ErrorException($message, $code, $code, $file, $line);
17+
$exceptionHandler($exception);
18+
if (in_array($code, [E_ERROR, E_RECOVERABLE_ERROR, E_USER_ERROR])) {
19+
exit(1);
20+
}
21+
};
22+
23+
set_error_handler($errorHandler);
24+
set_exception_handler($exceptionHandler);

‎app/Chapter08/Exercise10/date.php

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<?php
2+
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require_once 'all-errors-handler.php';
4+
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class Disposable extends Exception
6+
{
7+
}
8+
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function handle(array $input)
10+
{
11+
if (!isset($input[1])) {
12+
throw new Disposable('A class name is required as the first argument (one of DateTime or DateTimeImmutable).');
13+
}
14+
$calleeName = $input[1];
15+
if (!in_array($calleeName, [DateTime::class, DateTimeImmutable::class])) {
16+
throw new Disposable('One of DateTime or DateTimeImmutable is expected.');
17+
}
18+
$time = $input[2] ?? 'now';
19+
$timezone = $input[3] ?? 'UTC';
20+
try {
21+
$dateTimeZone = new DateTimeZone($timezone);
22+
} catch (Exception $e) {
23+
throw new Disposable(sprintf('Unknown/Bad timezone: [%s]', $timezone));
24+
}
25+
try {
26+
$dateTime = new $calleeName($time, $dateTimeZone);
27+
} catch (Exception $e) {
28+
throw new Disposable(sprintf('Cannot build date from [%s]', $time));
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}
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return $dateTime;
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}
32+
33+
try {
34+
$output = handle($argv);
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echo 'Result: ', print_r($output, true);
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} catch (Disposable $e) {
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echo '(!) ', $e->getMessage(), PHP_EOL;
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exit(1);
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}

‎app/Chapter08/Exercise2/log-handler.php

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<?php
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$errorHandler = function (int $code, string $message, string $file, int $line) {
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static $stream;
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if (is_null($stream)) {
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$stream = fopen(__DIR__ . '/app.log', 'a');
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}
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fwrite(
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$stream,
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date(DATE_W3C) . " :: $message, in [$file] on line [$line] (error code $code)" . PHP_EOL
11+
);
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};
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set_error_handler($errorHandler, E_ALL);
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echo $width / $height, PHP_EOL;

‎app/Chapter08/Exercise3/error-handler.php

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<?php
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$errorHandler = function (int $code, string $message, string $file, int $line) {
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echo date(DATE_W3C), " :: $message, in [$file] on line [$line] (error code $code)", PHP_EOL;
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if ($code === E_USER_ERROR) {
6+
exit(1);
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}
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};
9+
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set_error_handler($errorHandler, E_ALL);
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return $errorHandler;

‎app/Chapter08/Exercise3/sqrt.php

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<?php
2+
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require_once 'error-handler.php';
4+
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if (!array_key_exists(1, $argv)) {
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trigger_error('This script requires a number as first argument.', E_USER_ERROR);
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}
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$input = $argv[1];
10+
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if (!is_numeric($input)) {
12+
trigger_error(sprintf('A number is expected, got %s.', $input), E_USER_ERROR);
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}
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if (is_float($input * 1)) {
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$input = round($input);
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trigger_error(
18+
sprintf(
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'Decimal numbers are not allowed for this operation. Will use the rounded integer value [%d].',
20+
$input
21+
),
22+
E_USER_WARNING
23+
);
24+
}
25+
26+
if ($input < 0) {
27+
$input = abs($input);
28+
trigger_error(
29+
sprintf(
30+
'A negative number is not allowed for this operation. Will use the absolute value [%d].',
31+
$input
32+
),
33+
E_USER_WARNING
34+
);
35+
}
36+
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echo sprintf('sqrt(%d) = ', $input), sqrt($input), PHP_EOL;

‎app/Chapter08/Exercise4/error-handler.php

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<?php
2+
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$errorHandler = function (int $code, string $message, string $file, int $line) {
4+
echo date(DATE_W3C), " :: $message, in [$file] on line [$line] (error code $code)", PHP_EOL;
5+
if ($code === E_USER_ERROR) {
6+
exit(1);
7+
}
8+
};
9+
10+
set_error_handler($errorHandler, E_ALL);
11+
12+
return $errorHandler;

‎app/Chapter08/Exercise4/on-shutdown.php

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<?php
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$errorHandler = require_once 'error-handler.php';
4+
5+
register_shutdown_function(
6+
function () use ($errorHandler) {
7+
if ($error = error_get_last()) {
8+
if (in_array($error['type'], [E_ERROR, E_RECOVERABLE_ERROR], true)) {
9+
$errorHandler(
10+
$error['type'],
11+
$error['message'],
12+
$error['file'],
13+
$error['line']
14+
);
15+
}
16+
}
17+
}
18+
);
19+
20+
new UnknownClass();

‎app/Chapter08/Exercise5/basic-try-all.php

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<?php
2+
3+
echo 'SCRIPT START.', PHP_EOL;
4+
5+
try {
6+
7+
echo 'Run TRY block.', PHP_EOL;
8+
if (!isset($argv[1])) {
9+
echo 'NO ARGUMENT: Will throw exception.', PHP_EOL;
10+
throw new LogicException('Argument #1 is required.');
11+
}
12+
13+
echo 'ARGUMENT: ', $argv[1], PHP_EOL;
14+
var_dump(new $argv[1]);
15+
16+
} catch (Exception $e) {
17+
18+
echo 'EXCEPTION: ', sprintf('%s in %s at line %d', $e->getMessage(), $e->getFile(), $e->getLine()), PHP_EOL;
19+
20+
} catch (Error $e) {
21+
22+
echo 'ERROR: ', sprintf('%s in %s at line %d', $e->getMessage(), $e->getFile(), $e->getLine()), PHP_EOL;
23+
24+
} finally {
25+
26+
echo "FINALLY block gets executed.\n";
27+
28+
}
29+
30+
echo "Outside TRY-CATCH.\n";
31+
32+
echo 'SCRIPT END.', PHP_EOL;

‎app/Chapter08/Exercise5/basic-try.php

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<?php
2+
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echo 'SCRIPT START.', PHP_EOL;
4+
5+
try {
6+
7+
echo 'Run TRY block.', PHP_EOL;
8+
if (!isset($argv[1])) {
9+
echo 'NO ARGUMENT: Will throw exception.', PHP_EOL;
10+
throw new LogicException('Argument #1 is required.');
11+
}
12+
13+
echo 'ARGUMENT: ', $argv[1], PHP_EOL;
14+
var_dump(new $argv[1]);
15+
16+
} catch (Exception $e) {
17+
18+
echo 'EXCEPTION: ', sprintf('%s in %s at line %d', $e->getMessage(), $e->getFile(), $e->getLine()), PHP_EOL;
19+
20+
} finally {
21+
22+
echo "FINALLY block gets executed.\n";
23+
24+
}
25+
26+
echo "Outside TRY-CATCH.\n";
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echo 'SCRIPT END.', PHP_EOL;

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