diff --git a/unitTests/custom/Complex.php b/unitTests/custom/Complex.php
new file mode 100644
index 00000000..72938aa3
--- /dev/null
+++ b/unitTests/custom/Complex.php
@@ -0,0 +1,70 @@
+<?php
+
+class Complex {
+
+	private $realPart = 0;
+	private $imaginaryPart = 0;
+	private $suffix = 'i';
+
+	public static function _parseComplex($complexNumber) {
+		$complexNumber = (string) $complexNumber;
+
+		$validComplex = preg_match('/^([-+]?(\d+\.?\d*|\d*\.?\d+)([Ee][-+]?[0-2]?\d{1,2})?)([-+]?(\d+\.?\d*|\d*\.?\d+)([Ee][-+]?[0-2]?\d{1,2})?)?(([-+]?)([ij]?))$/ui',$complexNumber,$complexParts);
+
+		if (!$validComplex) {
+			return array( $complexNumber, 0, '' );
+		}
+
+		if (($complexParts[4] === '') && ($complexParts[9] !== '')) {
+			$complexParts[4] = $complexParts[8] . 1;
+		}
+
+		return array( (float) $complexParts[1],
+					  (float) $complexParts[4],
+					  $complexParts[9]
+					);
+	}	//	function _parseComplex()
+
+
+	public function __construct($realPart, $imaginaryPart = null, $suffix = null)
+	{
+		if ($imaginaryPart === null) {
+			if (is_array($realPart)) {
+				list ($realPart, $imaginaryPart, $suffix) = $realPart;
+			} elseif((is_string($realPart)) || (is_numeric($realPart))) {
+				list ($realPart, $imaginaryPart, $suffix) = self::_parseComplex($realPart);
+			}
+		}
+
+		$this->realPart = $realPart;
+		$this->imaginaryPart = $imaginaryPart;
+		$this->suffix = strtolower($suffix);
+	}
+
+	public function getReal()
+	{
+		return $this->realPart;
+	}
+
+	public function getImaginary()
+	{
+		return $this->imaginaryPart;
+	}
+
+	public function getSuffix()
+	{
+		return $this->suffix;
+	}
+
+	public function __toString() {
+		$str = "";
+		if ($this->imaginaryPart != 0.0) $str .= $this->imaginaryPart . $this->suffix;
+		if ($this->realPart != 0.0) {
+			if ($str) $str = "+" . $str;
+			$str = $this->realPart . $str;
+		}
+		if (!$str) $str = "0";
+		return $str;
+	}
+
+}
diff --git a/unitTests/custom/complexAssert.php b/unitTests/custom/complexAssert.php
new file mode 100644
index 00000000..680aa2ea
--- /dev/null
+++ b/unitTests/custom/complexAssert.php
@@ -0,0 +1,52 @@
+<?php
+
+include_once __DIR__.'/Complex.php';
+
+
+class complexAssert {
+
+	private $_errorMessage	= '';
+
+    public function assertComplexEquals($expected, $actual, $delta = 0)
+    {
+        $expectedComplex = new Complex($expected);
+        $actualComplex = new Complex($actual);
+
+		if (!is_numeric($actualComplex->getReal()) || !is_numeric($expectedComplex->getReal())) {
+			if ($actualComplex->getReal() !== $expectedComplex->getReal()) {
+				$this->_errorMessage = 'Mismatched String: ' .
+				                       $actualComplex->getReal() . ' !== ' . $expectedComplex->getReal();
+	            return FALSE;
+			}
+			return TRUE;
+		}
+
+        if ($actualComplex->getReal() < ($expectedComplex->getReal() - $delta) ||
+            $actualComplex->getReal() > ($expectedComplex->getReal() + $delta)) {
+			$this->_errorMessage = 'Mismatched Real part: ' .
+			                       $actualComplex->getReal() . ' != ' . $expectedComplex->getReal();
+            return FALSE;
+        }
+
+        if ($actualComplex->getImaginary() < ($expectedComplex->getImaginary() - $delta) ||
+            $actualComplex->getImaginary() > ($expectedComplex->getImaginary() + $delta)) {
+			$this->_errorMessage = 'Mismatched Imaginary part: ' .
+			                       $actualComplex->getImaginary() . ' != ' . $expectedComplex->getImaginary();
+            return FALSE;
+        }
+
+        if ($actualComplex->getSuffix() !== $actualComplex->getSuffix()) {
+			$this->_errorMessage = 'Mismatched Suffix: ' .
+			                       $actualComplex->getSuffix() . ' != ' . $expectedComplex->getSuffix();
+            return FALSE;
+		}
+
+        return TRUE;
+    }
+
+
+	public function getErrorMessage() {
+		return $this->_errorMessage;
+	}
+
+}