Added regression tests for emoji-test-regex-pattern

Author: JoshyPHP

.gitattributes

@@ -1,8 +1,10 @@
-/.*             export-ignore
-/README.md      export-ignore
-/composer.lock  export-ignore
-/docs           export-ignore
-/phpunit.xml    export-ignore
-/scripts        export-ignore
-/tests          export-ignore
-/vendor         export-ignore
+/.*                export-ignore
+/README.md         export-ignore
+/composer.lock     export-ignore
+/docs              export-ignore
+/package.json      export-ignore
+/package-lock.json export-ignore
+/phpunit.xml       export-ignore
+/scripts           export-ignore
+/tests             export-ignore
+/vendor            export-ignore

.gitignore

@@ -1,2 +1,3 @@
 /.*
+/node_modules
 /vendor

package-lock.json

@@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "emoji-test-regex-pattern": "^2.0.2"
+  }
+}

package.json

@@ -0,0 +1,86 @@
+<?php declare(strict_types=1);
+
+namespace s9e\RegexpBuilder\Tests;
+
+use PHPUnit\Framework\TestCase;
+use s9e\RegexpBuilder\Builder;
+use s9e\RegexpBuilder\Factory\PHP;
+use s9e\RegexpBuilder\Factory\Java;
+use s9e\RegexpBuilder\Factory\JavaScript;
+use s9e\RegexpBuilder\Factory\RE2;
+
+/**
+* @coversNothing
+*/
+class EmojiTest extends TestCase
+{
+	protected string $emojiDir = __DIR__ . '/../node_modules/emoji-test-regex-pattern/dist/latest';
+
+	protected function getEmoji(): array
+	{
+		if (!file_exists($this->emojiDir))
+		{
+			$this->markTestSkipped('Missing NPM module');
+		}
+
+		return file($this->emojiDir . '/index-strings.txt', FILE_IGNORE_NEW_LINES);
+	}
+
+	public function testEmojiBytes()
+	{
+		$this->runEmojiTest('D');
+	}
+
+	public function testEmojiUnicode()
+	{
+		$this->runEmojiTest('Du');
+	}
+
+	protected function runEmojiTest($modifiers)
+	{
+		$emoji   = $this->getEmoji();
+		$builder = PHP::getBuilder(delimiter: '/', modifiers: $modifiers);
+		$regexp  = '/^(?:' . $builder->build($emoji) . ')$/' . $modifiers;
+
+		// Ensure that each emoji is matched fully
+		foreach ($emoji as $string)
+		{
+			$errorMsg = "'$regexp' does not match '$string'";
+			$this->assertSame(1, preg_match($regexp, $string, $m), $errorMsg);
+			$this->assertSame($string, $m[0], $errorMsg);
+		}
+	}
+
+	/**
+	* @dataProvider getEmojiTestRegexPatternTests
+	*/
+	public function testEmojiTestRegexPattern(Builder $builder, string $filename)
+	{
+		$regexp = $builder->build($this->getEmoji());
+		$reference = file_get_contents($this->emojiDir . '/' . $filename);
+
+		$this->assertLessThanOrEqual(strlen($reference), strlen($regexp));
+	}
+
+	public function getEmojiTestRegexPatternTests(): array
+	{
+		return [
+			[
+				RE2::getBuilder(),
+				'cpp-re2.txt'
+			],
+			[
+				Java::getBuilder(),
+				'java.txt'
+			],
+			[
+				JavaScript::getBuilder(),
+				'javascript.txt'
+			],
+			[
+				JavaScript::getBuilder(flags: 'u'),
+				'javascript-u.txt'
+			],
+		];
+	}
+}