feat(expect): adds toBe

tests/.snapshots/success.txt

@@ -2,6 +2,11 @@
    PASS  Tests\CustomTestCase\ExecutedTest
   ✓ that gets executed
 
+   PASS  Tests\Expect\ToBe
+  ✓ strict comparisons
+  ✓ failures
+  ✓ not failures
+
    PASS  Tests\Features\AfterAll
   ✓ deletes file after all
 
@@ -167,5 +172,5 @@
    WARN  Tests\Visual\Success
   - visual snapshot of test suite on success
 
-  Tests:  6 skipped, 96 passed
-  Time:   3.43s
+  Tests:  6 skipped, 99 passed
+  Time:   3.62s

tests/Expect/ToBe.php

@@ -0,0 +1,19 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('strict comparisons', function () {
+    $nuno = new stdClass();
+    $dries = new stdClass();
+
+    expect($nuno)->toBe($nuno);
+    expect($nuno)->not->toBe($dries);
+});
+
+test('failures', function () {
+    expect(1)->toBe(2);
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(1)->not->toBe(1);
+})->throws(ExpectationFailedException::class);