Create JsonParsableStringifier

Author: henriquemoody

src/Stringifiers/JsonParsableStringifier.php

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+<?php
+
+/*
+ * This file is part of Respect/Stringifier.
+ *
+ * (c) Henrique Moody <[email protected]>
+ *
+ * For the full copyright and license information, please view the "LICENSE.md"
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Respect\Stringifier\Stringifiers;
+
+use const JSON_UNESCAPED_UNICODE;
+use const JSON_UNESCAPED_SLASHES;
+use function json_encode;
+use Respect\Stringifier\Stringifier;
+
+/**
+ * Converts any value into JSON parsable string representation.
+ *
+ * @author Henrique Moody <[email protected]>
+ */
+final class JsonParsableStringifier implements Stringifier
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function stringify($raw, int $depth): ?string
+    {
+        $string = json_encode($raw, (JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRESERVE_ZERO_FRACTION));
+        if (false === $string) {
+            return null;
+        }
+
+        return $string;
+    }
+}

tests/unit/Stringifiers/JsonParsableStringifierTest.php

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+<?php
+
+/*
+ * This file is part of Respect/Stringifier.
+ *
+ * (c) Henrique Moody <[email protected]>
+ *
+ * For the full copyright and license information, please view the "LICENSE.md"
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Respect\Stringifier\Test\Stringifiers;
+
+use Respect\Stringifier\Stringifiers\JsonParsableStringifier;
+use PHPUnit\Framework\TestCase;
+use function tmpfile;
+
+/**
+ * @covers \Respect\Stringifier\Stringifiers\JsonParsableStringifier
+ * @author Henrique Moody <[email protected]>
+ */
+final class JsonParsableStringifierTest extends TestCase
+{
+    /**
+     * @test
+     */
+    public function shouldReturnNullWhenNotPossibleToConvertToAJsonParsableString(): void
+    {
+        $raw = tmpfile();
+        $depth = 0;
+
+        $jsonSerializableStringifier = new JsonParsableStringifier();
+
+        self::assertNull($jsonSerializableStringifier->stringify($raw, $depth));
+    }
+
+    /**
+     * @test
+     */
+    public function shouldConvertRawValueToAJsonParsableString(): void
+    {
+        $raw = 'É uma \' " string';
+        $depth = 0;
+
+        $expected = '"É uma \' \" string"';
+
+        $jsonSerializableStringifier = new JsonParsableStringifier();
+
+        self::assertSame($expected, $jsonSerializableStringifier->stringify($raw, $depth));
+    }
+}