fix validator

Author: rez1dent3

src/Simple/BCMath.php

@@ -111,7 +111,13 @@ public function round($number, int $precision = 0): string
      */
     public function abs($number): string
     {
-        if (!preg_match('~^-?\d+(\.\d+)?~', $number)) {
+        if (!preg_match('~^-?\d*(\.\d*)?$~', $number, $matches)) {
+            return 0;
+        }
+
+        $digits = $matches[0] ?? '0';
+        $division = $matches[1] ?? '.';
+        if ($digits === '.' && $division === '.') {
             return 0;
         }
 

tests/MathTest.php

@@ -22,6 +22,7 @@ public function testAbs(string $class): void
         $provider = app($class);
 
         // not number
+        $this->assertEquals($provider->abs('.'), 0);
         $this->assertEquals($provider->abs('hello'), 0);
         $this->assertEquals($provider->abs('--121'), 0);
         $this->assertEquals($provider->abs('---121'), 0);
@@ -31,10 +32,14 @@ public function testAbs(string $class): void
         $this->assertEquals($provider->abs(-123), 123);
 
         // float
+        $this->assertEquals($provider->abs(.0), 0);
+        $this->assertEquals($provider->abs(123.0), 123);
         $this->assertEquals($provider->abs(123.11), 123.11);
         $this->assertEquals($provider->abs(-123.11), 123.11);
 
         // string
+        $this->assertEquals($provider->abs('123.'), 123);
+        $this->assertEquals($provider->abs('.11'), .11);
         $this->assertEquals($provider->abs('123.11'), 123.11);
         $this->assertEquals($provider->abs('-123.11'), 123.11);
     }