Add testing for "all tests failed"

Author: mk-mxp

tests/all-fail/HelloWorld.php

@@ -0,0 +1,6 @@
+<?php
+
+function helloWorld()
+{
+    return "Goodbye, Mars!";
+}

tests/all-fail/HelloWorldTest.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+class HelloWorldTest extends PHPUnit\Framework\TestCase
+{
+    public static function setUpBeforeClass(): void
+    {
+        require_once 'HelloWorld.php';
+    }
+
+    public function testHelloWorldOne(): void
+    {
+        $this->assertEquals('Hello, World!', helloWorld());
+    }
+
+    public function testHelloWorldTwo(): void
+    {
+        $this->assertEquals('Hello, World!', helloWorld());
+    }
+
+    public function testHelloWorldThree(): void
+    {
+        $this->assertEquals('Hello, World!', helloWorld());
+    }
+}

tests/all-fail/expected_results.json

@@ -0,0 +1 @@
+{"version":3,"status":"fail","tests":[{"name":"Hello world one","status":"fail","test_code":"$this->assertEquals('Hello, World!', helloWorld());\n","message":"HelloWorldTest::testHelloWorldOne\nFailed asserting that two strings are equal.\n--- Expected\n+++ Actual\n@@ @@\n-'Hello, World!'\n+'Goodbye, Mars!'\n\nHelloWorldTest.php:14"},{"name":"Hello world two","status":"fail","test_code":"$this->assertEquals('Hello, World!', helloWorld());\n","message":"HelloWorldTest::testHelloWorldTwo\nFailed asserting that two strings are equal.\n--- Expected\n+++ Actual\n@@ @@\n-'Hello, World!'\n+'Goodbye, Mars!'\n\nHelloWorldTest.php:19"},{"name":"Hello world three","status":"fail","test_code":"$this->assertEquals('Hello, World!', helloWorld());\n","message":"HelloWorldTest::testHelloWorldThree\nFailed asserting that two strings are equal.\n--- Expected\n+++ Actual\n@@ @@\n-'Hello, World!'\n+'Goodbye, Mars!'\n\nHelloWorldTest.php:24"}]}