From 8ee07330b361b0a7e142d52e85cd67afac1e292b Mon Sep 17 00:00:00 2001
From: Esteban <gabbanaesteban@gmail.com>
Date: Tue, 3 Aug 2021 20:55:07 -0400
Subject: [PATCH] Add toBeFalsy

---
 src/Expectation.php                 | 10 ++++++++++
 tests/Features/Expect/ToBeFalsy.php | 26 ++++++++++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 tests/Features/Expect/ToBeFalsy.php

diff --git a/src/Expectation.php b/src/Expectation.php
index 9c81ab04..fabc51f8 100644
--- a/src/Expectation.php
+++ b/src/Expectation.php
@@ -225,6 +225,16 @@ final class Expectation
         return $this;
     }
 
+    /**
+     * Asserts that the value is falsy.
+     */
+    public function toBeFalsy(): Expectation
+    {
+        Assert::assertFalse((bool) $this->value);
+
+        return $this;
+    }
+
     /**
      * Asserts that the value is greater than $expected.
      *
diff --git a/tests/Features/Expect/ToBeFalsy.php b/tests/Features/Expect/ToBeFalsy.php
new file mode 100644
index 00000000..761e9cc1
--- /dev/null
+++ b/tests/Features/Expect/ToBeFalsy.php
@@ -0,0 +1,26 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('passes', function () {
+    expect(false)->toBeFalsy();
+    expect('')->toBeFalsy();
+    expect(null)->toBeFalsy();
+    expect([])->toBeFalsy();
+    expect(0)->toBeFalsy();
+    expect('0')->toBeFalsy();
+
+    expect(true)->not->toBeFalsy();
+    expect([1])->not->toBeFalsy();
+    expect('false')->not->toBeFalsy();
+    expect(1)->not->toBeFalsy();
+    expect(-1)->not->toBeFalsy();
+});
+
+test('failures', function () {
+    expect(1)->toBeFalsy();
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect(null)->not->toBeFalsy();
+})->throws(ExpectationFailedException::class);