Release prep (#86)

README.md

@@ -13,7 +13,7 @@
 * Unlimited variable name lengths
 * String support, as function parameters or as evaluated as a number by PHP
 * Exceptions on divide by zero, or treat as zero
-* Unary Minus (e.g. -3)
+* Unary Plus and Minus (e.g. +3 or -sin(12))
 * Pi ($pi) and Euler's number ($e) support to 11 decimal places
 * Easily extensible
 
@@ -176,9 +176,6 @@ $executor->addOperator("/", false, 180, function($a, $b) {
 echo $executor->execute('1/0');
 ```
 
-## Unary Minus Operator:
-Negative numbers are supported via the unary minus operator. Positive numbers are not explicitly supported as unsigned numbers are assumed positive.
-
 ## String Support:
 Expressions can contain double or single quoted strings that are evaluated the same way as PHP evalutes strings as numbers. You can also pass strings to functions.
 
@@ -202,4 +199,4 @@ Full class documentation via [PHPFUI/InstaDoc](http://phpfui.com/?n=NXP&c=MathEx
 
 ## Future Enhancements
 
-This package will continue to track currently supported versions of PHP.  PHP 7.1 and earlier support will be dropped when PHP 8 is released.
+This package will continue to track currently supported versions of PHP.

tests/MathTest.php

@@ -58,6 +58,17 @@ public function providerExpressions()
             ['(4*2) - 5'],
             ['4*-5'],
             ['4 * -5'],
+			['+5'],
+			['+(3+2)'],
+			['+(+3+2)'],
+			['+(-3+2)'],
+			['-5'],
+			['-(-5)'],
+			['-(+5)'],
+			['+(-5)'],
+			['+(+5)'],
+			['-(3+2)'],
+			['-(-3+-2)'],
 
             ['abs(1.5)'],
             ['acos(0.15)'],
@@ -92,6 +103,9 @@ public function providerExpressions()
             ['rad2deg(1.5)'],
             ['round(1.5)'],
             ['sin(1.5)'],
+            ['sin(12)'],
+            ['+sin(12)'],
+            ['-sin(12)'],
             ['sinh(1.5)'],
             ['sqrt(1.5)'],
             ['tan(1.5)'],
@@ -252,17 +266,6 @@ public function testZeroDivision()
         $this->assertEquals(0, $calculator->execute('10 / 0'));
     }
 
-    public function testUnaryOperators()
-    {
-        $calculator = new MathExecutor();
-        $this->assertEquals(5, $calculator->execute('+5'));
-        $this->assertEquals(5, $calculator->execute('+(3+2)'));
-        $this->assertEquals(-5, $calculator->execute('-5'));
-        $this->assertEquals(5, $calculator->execute('-(-5)'));
-        $this->assertEquals(-5, $calculator->execute('+(-5)'));
-        $this->assertEquals(-5, $calculator->execute('-(3+2)'));
-    }
-
     public function testZeroDivisionException()
     {
         $calculator = new MathExecutor();