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2026-08-20 11:41:17 +00:00
commit 6949695eac
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+<?php
+
+/**
+ * TextDirectionTest.php
+ *
+ * @since     2026-07-17
+ * @category  Library
+ * @package   Unicode
+ * @author    Nicola Asuni <info@tecnick.com>
+ * @copyright 2011-2026 Nicola Asuni - Tecnick.com LTD
+ * @license   https://www.gnu.org/copyleft/lesser.html GNU-LGPL v3 (see LICENSE)
+ * @link      https://github.com/tecnickcom/tc-lib-unicode
+ *
+ * This file is part of tc-lib-unicode software library.
+ */
+
+namespace Test;
+
+use Com\Tecnick\Unicode\Bidi;
+use Com\Tecnick\Unicode\TextDirection;
+
+/**
+ * TextDirection enum test
+ *
+ * @since     2026-07-17
+ * @category  Library
+ * @package   Unicode
+ * @author    Nicola Asuni <info@tecnick.com>
+ * @copyright 2011-2026 Nicola Asuni - Tecnick.com LTD
+ * @license   https://www.gnu.org/copyleft/lesser.html GNU-LGPL v3 (see LICENSE)
+ * @link      https://github.com/tecnickcom/tc-lib-unicode
+ */
+class TextDirectionTest extends TestUtil
+{
+    public function testCaseBackingValues(): void
+    {
+        $this->assertSame('', TextDirection::Auto->value);
+        $this->assertSame('R', TextDirection::Rtl->value);
+        $this->assertSame('L', TextDirection::Ltr->value);
+    }
+
+    public function testFromLooseCanonical(): void
+    {
+        $this->assertSame(TextDirection::Auto, TextDirection::fromLoose(''));
+        $this->assertSame(TextDirection::Rtl, TextDirection::fromLoose('R'));
+        $this->assertSame(TextDirection::Ltr, TextDirection::fromLoose('L'));
+    }
+
+    public function testFromLooseIsLenientOnFirstCharacter(): void
+    {
+        $this->assertSame(TextDirection::Rtl, TextDirection::fromLoose('r'));
+        $this->assertSame(TextDirection::Ltr, TextDirection::fromLoose('l'));
+        $this->assertSame(TextDirection::Rtl, TextDirection::fromLoose('RTL'));
+        $this->assertSame(TextDirection::Ltr, TextDirection::fromLoose('ltr'));
+        $this->assertSame(TextDirection::Rtl, TextDirection::fromLoose('right'));
+        $this->assertSame(TextDirection::Ltr, TextDirection::fromLoose('left'));
+    }
+
+    public function testFromLooseFallsBackToAuto(): void
+    {
+        $this->assertSame(TextDirection::Auto, TextDirection::fromLoose('X'));
+        $this->assertSame(TextDirection::Auto, TextDirection::fromLoose('auto'));
+        $this->assertSame(TextDirection::Auto, TextDirection::fromLoose('1'));
+    }
+
+    public function testFromLoosePassesThroughEnumInstance(): void
+    {
+        $this->assertSame(TextDirection::Rtl, TextDirection::fromLoose(TextDirection::Rtl));
+    }
+
+    public function testFromLooseRoundTrip(): void
+    {
+        foreach (TextDirection::cases() as $case) {
+            $this->assertSame($case, TextDirection::fromLoose($case->value));
+        }
+    }
+
+    /**
+     * The widened Bidi constructor accepts a TextDirection and behaves exactly
+     * like the equivalent legacy string.
+     *
+     * @throws \Com\Tecnick\Unicode\Exception
+     */
+    public function testBidiAcceptsEnum(): void
+    {
+        // The trailing space makes the forced RTL direction visible in the output:
+        // L1.4 resets it to the paragraph level, moving it to the visual left.
+        $fromEnum = new Bidi('left to right ', null, null, TextDirection::Rtl, true);
+        $fromString = new Bidi('left to right ', null, null, 'R', true);
+        $this->assertSame(' left to right', $fromEnum->getString());
+        $this->assertSame($fromString->getString(), $fromEnum->getString());
+    }
+}