From f6750c9c3c944827462f28ceb3db6284458412cb Mon Sep 17 00:00:00 2001
From: Bruce Wells <brucekwells@gmail.com>
Date: Wed, 27 Sep 2023 16:28:28 -0400
Subject: [PATCH] Improved tests for ! operator (#131)

---
 tests/MathTest.php | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/tests/MathTest.php b/tests/MathTest.php
index 8c22224..bf33793 100644
--- a/tests/MathTest.php
+++ b/tests/MathTest.php
@@ -256,8 +256,15 @@ class MathTest extends TestCase
           ['7 % 4'],
           ['99 % 4'],
           ['123 % 7'],
+
           ['!(1||0)'],
           ['!(1&&0)'],
+          ['!(1)'],
+          ['!(0)'],
+          ['! 1'],
+          ['! 0'],
+          ['!1'],
+          ['!0'],
         ];
     }
 
@@ -495,8 +502,15 @@ class MathTest extends TestCase
           ['7 % 4'],
           ['99 % 4'],
           ['123 % 7'],
+
           ['!(1||0)'],
           ['!(1&&0)'],
+          ['!(1)'],
+          ['!(0)'],
+          ['! 1'],
+          ['! 0'],
+          ['!1'],
+          ['!0'],
         ];
     }
 
@@ -582,6 +596,21 @@ class MathTest extends TestCase
         $this->assertEquals(0.0, $calculator->execute('$ + $four'));
     }
 
+    public function testNotVariableOperator() : void
+    {
+        $calculator = new MathExecutor();
+        $calculator->setVar('one', 1);
+        $calculator->setVar('zero', 0);
+        $this->assertEquals(false, $calculator->execute('! $one'));
+        $this->assertEquals(false, $calculator->execute('!$one'));
+        $this->assertEquals(false, $calculator->execute('! ($one)'));
+        $this->assertEquals(false, $calculator->execute('!($one)'));
+        $this->assertEquals(true, $calculator->execute('! $zero'));
+        $this->assertEquals(true, $calculator->execute('!$zero'));
+        $this->assertEquals(true, $calculator->execute('! ($zero)'));
+        $this->assertEquals(true, $calculator->execute('!($zero)'));
+    }
+
     public function testExponentiation() : void
     {
         $calculator = new MathExecutor();