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First set of tests, argument unwrapping/injection

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@echo "Available Targets:"; grep -E '(^[a-zA-Z_-]+:.*?##.*$$)|(^##)' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf " \033[32m%-20s\033[0m %s\n", $$1, $$2}' | sed -e 's/\[32m##/[33m/'
.PHONY: phpstan
phpstan: ## Run static analysis
@phpstan --no-progress
.PHONY: phpunit
phpunit: ## Run unit tests
@phpunit --testdox --no-progress --display-warnings
.PHONY: coverage
coverage: ## Code coverage
@XDEBUG_MODE=coverage phpunit --coverage-text --no-progress

17
README.md
View File

@ -45,3 +45,20 @@ $bus->execute('hello', ['name'=>'Bob'])->then(
} }
); );
``` ```
## License
Copyright (C) 2024, NoccyLabs
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.

18
examples/local.php
View File

@ -9,6 +9,7 @@ use React\EventLoop\Loop;
use React\Promise\Promise; use React\Promise\Promise;
$commands = new CommandRegistry(); $commands = new CommandRegistry();
// Register some function to call. The name here is "hello", and it will // Register some function to call. The name here is "hello", and it will
// receive a Context holding the call context. Any passed data will be // receive a Context holding the call context. Any passed data will be
// available as properties on the Context object. // available as properties on the Context object.
@ -21,23 +22,28 @@ $commands->register("hello", function (Context $context) {
}); });
}); });
}); });
$commands->register("hello2", function (Context $context) {
// Note how the arguments can be unwrapped. You can still add Context as
// an argument to get the full context. Values will be cast to match the
// type, so keep this in mind when feeding strings like 'false' into a
// boolean argument. It is also a good idea to make the arguments nullable.
$commands->register("hello2", function (?string $name, ?string $phrase, ?string $missing) {
// Just returning the value works just fine! // Just returning the value works just fine!
return "Hello2, {$context->name}"; return "Greetings, {$name}. {$phrase} to you too!";
}); });
// Create the bus // Create the bus
$bus = new CommandBus($commands); $bus = new CommandBus($commands);
// And execute some commands! // And execute some commands!
$bus->execute('hello', ['name'=>'Bob'])->then( $bus->execute('hello', ['name'=>'Bob'])
function ($result) { ->then(function ($result) {
var_dump($result); var_dump($result);
} }
); );
$bus->execute('hello2', ['name'=>'Bob'])->then( $bus->execute('hello2', ['name'=>'Bob','phrase'=>'Good day'])
function ($result) { ->then(function ($result) {
var_dump($result); var_dump($result);
} }
); );

23
phpunit.xml Normal file
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@ -0,0 +1,23 @@
<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/11.0/phpunit.xsd"
bootstrap="vendor/autoload.php"
cacheDirectory=".phpunit.cache"
executionOrder="depends,defects"
requireCoverageMetadata="true"
beStrictAboutCoverageMetadata="true"
beStrictAboutOutputDuringTests="true"
failOnRisky="true"
failOnWarning="true">
<testsuites>
<testsuite name="default">
<directory>tests</directory>
</testsuite>
</testsuites>
<source restrictDeprecations="true" restrictNotices="true" restrictWarnings="true">
<include>
<directory>src</directory>
</include>
</source>
</phpunit>

4
src/Command.php
View File

@ -31,7 +31,9 @@ class Command
public function call(Context $context): PromiseInterface public function call(Context $context): PromiseInterface
{ {
return new Promise(function (callable $resolve) use ($context) { return new Promise(function (callable $resolve) use ($context) {
$resolve(call_user_func($this->handler, $context)); $args = $context->toMethodParameters($this->handler);
$resolve(call_user_func($this->handler, ...$args));
//$resolve(call_user_func($this->handler, $context));
return; return;
}); });
} }

2
src/CommandBus.php
View File

@ -82,7 +82,7 @@ class CommandBus implements CommandBusInterface
case Message::MSGTYPE_RESULT: // Result from execution on client case Message::MSGTYPE_RESULT: // Result from execution on client
// TODO implement me // TODO implement me
break; break;
case Message::MSGTYPE_REGISTRY: // command registry actions case Message::MSGTYPE_REGISTRY: // command registry actions
// TODO implement me // TODO implement me
break; break;
default: default:

54
src/Context.php
View File

@ -2,6 +2,10 @@
namespace NoccyLabs\React\CommandBus; namespace NoccyLabs\React\CommandBus;
use ReflectionFunction;
use ReflectionIntersectionType;
use ReflectionNamedType;
use ReflectionUnionType;
/** /**
* The context contains all the data relating to calling a command. It has an * The context contains all the data relating to calling a command. It has an
@ -37,5 +41,55 @@ class Context
{ {
return $this->payload[$name] ?? null; return $this->payload[$name] ?? null;
} }
public function toMethodParameters(callable $callable): array
{
$refl = new ReflectionFunction($callable);
$args = [];
// Go over the arguments
foreach ($refl->getParameters() as $parameter) {
$name = $parameter->getName();
if (!$parameter->hasType()) {
// use name
$args[] = isset($this->payload[$name])
? $this->payload[$name]
: ($parameter->isDefaultValueAvailable() ? $parameter->getDefaultValue() : null);
} else {
// use name and type
$type = $parameter->getType();
if ($type instanceof ReflectionNamedType && $type->isBuiltin()) {
$typeName = $type->getName();
$arg = isset($this->payload[$name])
? $this->payload[$name]
: ($parameter->isDefaultValueAvailable() ? $parameter->getDefaultValue() : null);
$args[] = match ($typeName) {
'string' => strval($arg),
'boolean' => boolval($arg),
'array' => (array)$arg,
'object' => (object)$arg,
'integer' => intval($arg),
'float' => floatval($arg),
default => $arg,
};
} elseif ($type instanceof ReflectionNamedType) {
$typeName = $type->getName();
switch ($typeName) {
case Context::class:
$args[] = $this;
break;
default:
$args[] = null; // FIXME how to handle this?
}
} elseif ($type instanceof ReflectionUnionType) {
$args[] = null; // FIXME how to handle this?
} elseif ($type instanceof ReflectionIntersectionType) {
$args[] = null; // FIXME how to handle this?
}
}
}
return $args;
}
} }

67
tests/CommandRegistryTest.php Normal file
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@ -0,0 +1,67 @@
<?php
namespace NoccyLabs\React\CommandBus;
use PHPUnit\Framework\Attributes\CoversClass;
#[CoversClass(CommandRegistry::class)]
class CommandRegistryTest extends \PHPUnit\Framework\TestCase
{
public function testAddingNewCommandEmitsEvent()
{
$count = 0;
$reg = new CommandRegistry();
$reg->on(CommandRegistry::EVENT_REGISTERED, function ($data) use (&$count){
$this->assertEquals('foo', $data);
$count++;
});
$reg->register('foo', function () {});
$reg->register('foo', function () {});
$this->assertEquals(1, $count);
}
public function testRemovingCommandEmitsEvent()
{
$count = 0;
$reg = new CommandRegistry();
$reg->on(CommandRegistry::EVENT_UNREGISTERED, function ($data) use (&$count){
$this->assertEquals('foo', $data);
$count++;
});
$reg->register('foo', function () {});
$reg->unregister('foo');
$reg->unregister('foo');
$this->assertEquals(1, $count);
}
public function testFindingCommands()
{
$cmda = function () {};
$cmdb = function () {};
$reg = new CommandRegistry();
$reg->register('a', $cmda);
$reg->register('b', $cmdb);
$this->assertEquals('a', $reg->find('a')?->getName());
$this->assertEquals('b', $reg->find('b')?->getName());
}
public function testGettingCommandNames()
{
$cmda = function () {};
$cmdb = function () {};
$reg = new CommandRegistry();
$reg->register('a', $cmda);
$reg->register('b', $cmdb);
$this->assertEquals(['a','b'], $reg->getNames());
}
}

29
tests/CommandTest.php Normal file
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@ -0,0 +1,29 @@
<?php
namespace NoccyLabs\React\CommandBus;
use PHPUnit\Framework\Attributes\CoversClass;
#[CoversClass(Command::class)]
class CommandTest extends \PHPUnit\Framework\TestCase
{
public function testCommandName()
{
$command = new Command("foobar", function () {});
$this->assertEquals('foobar', $command->getName());
}
public function testCommandExecution()
{
$hit = false;
$command = new Command("foobar", function () use (&$hit) { $hit=true; });
$context = new Context("foobar", []);
$command->call($context);
$this->assertEquals(true, $hit);
}
}

40
tests/ContextTest.php Normal file
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@ -0,0 +1,40 @@
<?php
namespace NoccyLabs\React\CommandBus;
use PHPUnit\Framework\Attributes\CoversClass;
#[CoversClass(Context::class)]
class ContextTest extends \PHPUnit\Framework\TestCase
{
public function testContextPropertyAccess()
{
$context = new Context("", [ 'foo'=>true, 'bar'=>'hello' ]);
$this->assertEquals(true, $context->foo);
$this->assertEquals('hello', $context->bar);
}
public function testMakingParameters()
{
$func1 = function () {};
$func2 = function (Context $context) {};
$func3 = function ($a, ?int $b, ?string $c, $d) {};
$context = new Context("", [ 'a'=>true, 'b'=>42, 'c'=>'hello' ]);
$expect1 = [];
$expect2 = [$context];
$expect3 = [true,42,'hello',null];
$args1 = $context->toMethodParameters($func1);
$this->assertEquals($expect1, $args1);
$args2 = $context->toMethodParameters($func2);
$this->assertEquals($expect2, $args2);
$args3 = $context->toMethodParameters($func3);
$this->assertEquals($expect3, $args3);
}
}