Add tests

tests/unit/Event/Value/ComparisonFailureBuilderTest.php

@@ -0,0 +1,147 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of PHPUnit.
+ *
+ * (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 PHPUnit\Event\Code;
+
+use Exception;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\Attributes\Small;
+use PHPUnit\Framework\Attributes\TestDox;
+use PHPUnit\Framework\ExpectationFailedException;
+use PHPUnit\Framework\TestCase;
+use SebastianBergmann\Comparator\ComparisonFailure;
+use stdClass;
+
+#[CoversClass(ComparisonFailureBuilder::class)]
+#[Small]
+final class ComparisonFailureBuilderTest extends TestCase
+{
+    public static function provider(): array
+    {
+        return [
+            'type of expected value: string, string representation of expected value: not available, type of actual value: string, string representation of actual value: not available' => [
+                'expected',
+                'actual',
+                '',
+                new ExpectationFailedException(
+                    'message',
+                    new ComparisonFailure(
+                        'expected',
+                        'actual',
+                        '',
+                        '',
+                        'message',
+                    ),
+                ),
+            ],
+
+            'type of expected value: true, string representation of expected value: not available, type of actual value: false, string representation of actual value: not available' => [
+                'true',
+                'false',
+                '',
+                new ExpectationFailedException(
+                    'message',
+                    new ComparisonFailure(
+                        true,
+                        false,
+                        '',
+                        '',
+                        'message',
+                    ),
+                ),
+            ],
+
+            'type of expected value: null, string representation of expected value: not available, type of actual value: null, string representation of actual value: not available' => [
+                'null',
+                'null',
+                '',
+                new ExpectationFailedException(
+                    'message',
+                    new ComparisonFailure(
+                        null,
+                        null,
+                        '',
+                        '',
+                        'message',
+                    ),
+                ),
+            ],
+
+            'type of expected value: array, string representation of expected value: not available, type of actual value: object, string representation of actual value: not available' => [
+                '',
+                '',
+                '',
+                new ExpectationFailedException(
+                    'message',
+                    new ComparisonFailure(
+                        [],
+                        new stdClass,
+                        '',
+                        '',
+                        'message',
+                    ),
+                ),
+            ],
+
+            'type of expected value: string, string representation of expected value: available, type of actual value: string, string representation of actual value: available' => [
+                'expected-string',
+                'actual-string',
+                <<<'EOT'
+
+--- Expected
++++ Actual
+@@ @@
+-expected-string
++actual-string
+
+EOT,
+                new ExpectationFailedException(
+                    'message',
+                    new ComparisonFailure(
+                        'expected',
+                        'actual',
+                        'expected-string',
+                        'actual-string',
+                        'message',
+                    ),
+                ),
+            ],
+        ];
+    }
+
+    #[TestDox('Maps exception that is not of type ExpectationFailedException to null')]
+    public function testMapsGenericThrowableToNull(): void
+    {
+        $this->assertNull(
+            ComparisonFailureBuilder::from(new Exception),
+        );
+    }
+
+    #[TestDox('Maps ExpectationFailedException that does not aggregate a ComparisonFailure object to null')]
+    public function testMapsExpectationFailedExceptionWithoutComparisonFailureToNull(): void
+    {
+        $this->assertNull(
+            ComparisonFailureBuilder::from(
+                new ExpectationFailedException('message'),
+            ),
+        );
+    }
+
+    #[DataProvider('provider')]
+    #[TestDox('Maps ExpectationFailedException that aggregates a ComparisonFailure object to value object')]
+    public function testMapsExpectationFailedExceptionWithComparisonFailureToValueObject(string $expected, string $actual, string $diff, ExpectationFailedException $exception): void
+    {
+        $comparisonFailure = ComparisonFailureBuilder::from($exception);
+
+        $this->assertSame($expected, $comparisonFailure->expected());
+        $this->assertSame($actual, $comparisonFailure->actual());
+        $this->assertSame($diff, $comparisonFailure->diff());
+    }
+}