Added support for the error suppression operator.

src/Theme/ClassicTheme.php

@@ -46,7 +46,7 @@ public function onTestFinished(TestResult $result): void
             $throwable = $throwable->previous();
         }
 
-        if ($result->trace) {
+        if ($result->trace && !$result->trace->suppressed) {
             printf(
                 Color::colorize("fg-$statusColour", '%s%s: %s in %s on line %s%1$s%1$s'),
                 PHP_EOL,

src/Trace.php

@@ -13,10 +13,11 @@ public function __construct(
         public readonly string $message,
         public readonly string $file,
         public readonly int $line,
+        public readonly bool $suppressed = false,
     ) {}
 
     public static function fromEvent(PhpWarningTriggered|PhpNoticeTriggered|PhpDeprecationTriggered $event): self
     {
-        return new self($event->message(), $event->file(), $event->line());
+        return new self($event->message(), $event->file(), $event->line(), $event->wasSuppressed());
     }
 }

test/CapabilitiesTest.php

@@ -64,6 +64,13 @@ public function testWarning(): void
         self::assertTrue(true);
     }
 
+    public function testSilencedWarning(): void
+    {
+        $foo = @$bar;
+
+        self::assertTrue(true);
+    }
+
     public function testDeprecation(): void
     {
         // Serializable interface is deprecated.

test/functional/warning silenced.phpt

@@ -0,0 +1,21 @@
+--TEST--
+Tests that when a test generates a warning that is suppressed, the warning is not printed.
+
+--ARGS--
+-c test --colors=always test/CapabilitiesTest.php --filter ::testSilencedWarning$
+
+--FILE_EXTERNAL--
+../PHPUnit runner.php
+
+--EXPECTF--
+PHPUnit %s
+
+Runtime: %s
+Configuration: %s
+
+100% W ScriptFUSIONTest\Pip\CapabilitiesTest::testSilencedWarning (%d ms)
+
+
+Time: %s
+%A
+OK (1 test, 1 assertion)