assertJsonStringEqualsJsonString()

<?php
use PHPUnit\Framework\TestCase;

class JsonStringEqualsJsonStringTest extends TestCase
{
    public function testFailure()
    {
        $this->assertJsonStringEqualsJsonString(
            json_encode(['Mascot' => 'Tux']),
            json_encode(['Mascot' => 'ux'])
        );
    }
}
?>

phpunit JsonStringEqualsJsonStringTest
PHPUnit 5.6.0 by Sebastian Bergmann and contributors.

F

Time: 0 seconds, Memory: 5.00Mb

There was 1 failure:

1) JsonStringEqualsJsonStringTest::testFailure
Failed asserting that two objects are equal.
--- Expected
+++ Actual
@@ @@
 stdClass Object (
 -    'Mascot' => 'Tux'
 +    'Mascot' => 'ux'
)

/home/sb/JsonStringEqualsJsonStringTest.php:5

FAILURES!
Tests: 1, Assertions: 3, Failures: 1.