Refactor TestStatus to enumeration

Author: sebastianbergmann

src/CodeCoverage.php

@@ -24,7 +24,6 @@
 use SebastianBergmann\CodeCoverage\Test\Target\TargetCollectionValidator;
 use SebastianBergmann\CodeCoverage\Test\Target\ValidationResult;
 use SebastianBergmann\CodeCoverage\Test\TestSize\TestSize;
-use SebastianBergmann\CodeCoverage\Test\TestStatus\TestStatus;
 
 /**
  * Provides collection functionality for PHP code coverage information.
@@ -190,7 +189,7 @@ public function append(RawCodeCoverageData $rawData, ?string $id = null, bool $a
         }
 
         if ($status === null) {
-            $status = TestStatus::unknown();
+            $status = TestStatus::Unknown;
         }
 
         if ($covers === null) {

src/TestStatus.php

@@ -0,0 +1,44 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of phpunit/php-code-coverage.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace SebastianBergmann\CodeCoverage;
+
+/**
+ * @no-named-arguments Parameter names are not covered by the backward compatibility promise for phpunit/php-code-coverage
+ */
+enum TestStatus: string
+{
+    public function isKnown(): bool
+    {
+        return $this !== self::Unknown;
+    }
+
+    public function isUnknown(): bool
+    {
+        return $this === self::Unknown;
+    }
+
+    public function isSuccess(): bool
+    {
+        return $this === self::Success;
+    }
+
+    public function isFailure(): bool
+    {
+        return $this === self::Failure;
+    }
+
+    public function asString(): string
+    {
+        return $this->value;
+    }
+    case Unknown = 'unknown';
+    case Success = 'success';
+    case Failure = 'failure';
+}

src/TestStatus/Failure.php

@@ -10,18 +10,17 @@
 namespace SebastianBergmann\CodeCoverage\Test\TestStatus;
 
 use PHPUnit\Framework\Attributes\CoversClass;
-use PHPUnit\Framework\Attributes\CoversClassesThatExtendClass;
 use PHPUnit\Framework\Attributes\Small;
 use PHPUnit\Framework\TestCase;
+use SebastianBergmann\CodeCoverage\TestStatus;
 
 #[CoversClass(TestStatus::class)]
-#[CoversClassesThatExtendClass(TestStatus::class)]
 #[Small]
 final class TestStatusTest extends TestCase
 {
     public function testCanBeUnknown(): void
     {
-        $status = TestStatus::unknown();
+        $status = TestStatus::Unknown;
 
         $this->assertTrue($status->isUnknown());
         $this->assertFalse($status->isKnown());
@@ -32,7 +31,7 @@ public function testCanBeUnknown(): void
 
     public function testCanBeSuccess(): void
     {
-        $status = TestStatus::success();
+        $status = TestStatus::Success;
 
         $this->assertFalse($status->isUnknown());
         $this->assertTrue($status->isKnown());
@@ -43,7 +42,7 @@ public function testCanBeSuccess(): void
 
     public function testCanBeFailure(): void
     {
-        $status = TestStatus::failure();
+        $status = TestStatus::Failure;
 
         $this->assertFalse($status->isUnknown());
         $this->assertTrue($status->isKnown());