function JsonEncoderTest::testEncodeInvalidUtf8IsSubstituted

Tests that invalid UTF-8 is handled via JSON_INVALID_UTF8_SUBSTITUTE.

See also

https://www.drupal.org/project/drupal/issues/3549107

File

core/modules/serialization/tests/src/Unit/Encoder/JsonEncoderTest.php, line 46

Class

JsonEncoderTest

Tests Drupal\serialization\Encoder\JsonEncoder.

Namespace

Code

public function testEncodeInvalidUtf8IsSubstituted() : void {
  // A representative invalid UTF-8 sequence that would previously cause
  // json_encode() to fail.
  $input = "Test\x80Data";
  $encoded = $this->encoder
    ->encode($input, 'json');
  // Verify it's valid JSON (would fail without the flag).
  $this->assertJson($encoded, 'Encoded output should be valid JSON even with invalid UTF-8.');
  // Verify the replacement character is present.
  $this->assertStringContainsString('\\ufffd', $encoded, 'Invalid UTF-8 should be replaced with U+FFFD.');
  // Verify it can be decoded.
  json_decode($encoded);
  $this->assertSame(JSON_ERROR_NONE, json_last_error(), 'Encoded JSON should be decodable without errors.');
}