Add static analysis test

Signed-off-by: Jens Hatlak <[email protected]>

psalm-baseline.xml

@@ -211,6 +211,11 @@
       <code><![CDATA[MixedPluginManager]]></code>
     </UnusedClass>
   </file>
+  <file src="test/StaticAnalysis/ServiceLocatorInterfaceConsumer.php">
+    <UnusedClass>
+      <code><![CDATA[ServiceLocatorInterfaceConsumer]]></code>
+    </UnusedClass>
+  </file>
   <file src="test/StaticAnalysis/ServiceManagerConfiguration.php">
     <UnusedClass>
       <code><![CDATA[ServiceManagerConfiguration]]></code>

test/StaticAnalysis/ServiceLocatorInterfaceConsumer.php

@@ -0,0 +1,65 @@
+<?php
+
+declare(strict_types=1);
+
+namespace LaminasTest\ServiceManager\StaticAnalysis;
+
+use DateTimeImmutable;
+use Laminas\ServiceManager\ServiceLocatorInterface;
+
+use function assert;
+
+final class ServiceLocatorInterfaceConsumer
+{
+    public function canInferTypeFromGet(): void
+    {
+        $serviceProvider = $this->getServiceProvider();
+
+        $date = $serviceProvider->get(DateTimeImmutable::class);
+        echo $date->format('Y-m-d H:i:s');
+
+        $value = $serviceProvider->get('foo');
+        assert($value === 'bar');
+    }
+
+    public function canInferTypeFromBuild(): void
+    {
+        $serviceProvider = $this->getServiceProvider();
+
+        $date = $serviceProvider->build(DateTimeImmutable::class);
+        echo $date->format('Y-m-d H:i:s');
+
+        $value = $serviceProvider->build('foo');
+        assert($value === 'bar');
+    }
+
+    private function getServiceProvider(): ServiceLocatorInterface
+    {
+        $services = [
+            'foo'                    => 'bar',
+            DateTimeImmutable::class => new DateTimeImmutable(),
+        ];
+        return new class ($services) implements ServiceLocatorInterface {
+            public function __construct(private readonly array $services)
+            {
+            }
+
+            public function has(string $id): bool
+            {
+                return isset($this->services[$id]);
+            }
+
+            public function build(string $name, ?array $options = null): mixed
+            {
+                /** @psalm-suppress MixedReturnStatement Yes indeed, can return mixed. */
+                return $this->services[$name] ?? null;
+            }
+
+            public function get(string $id): mixed
+            {
+                /** @psalm-suppress MixedReturnStatement Yes indeed, can return mixed. */
+                return $this->services[$id] ?? null;
+            }
+        };
+    }
+}