Unit tests for default value binder

unitTests/Classes/PHPExcel/Cell/DefaultValueBinderTest.php

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+<?php
+
+require_once 'testDataFileIterator.php';
+
+class DefaultValueBinderTest extends PHPUnit_Framework_TestCase
+{
+
+    public function setUp()
+    {
+        if (!defined('PHPEXCEL_ROOT'))
+        {
+            define('PHPEXCEL_ROOT', APPLICATION_PATH . '/');
+        }
+        require_once(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
+	}
+
+    /**
+     * @dataProvider providerDataTypeForValue
+     */
+	public function testDataTypeForValue()
+	{
+		$args = func_get_args();
+		$expectedResult = array_pop($args);
+		$result = call_user_func_array(array('PHPExcel_Cell_DefaultValueBinder','dataTypeForValue'),$args);
+		$this->assertEquals($expectedResult, $result);
+	}
+
+    public function providerDataTypeForValue()
+    {
+    	return new testDataFileIterator('rawTestData/Cell/DefaultValueBinder.data');
+	}
+
+}

unitTests/rawTestData/Cell/DefaultValueBinder.data

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+NULL,       "null"
+,           "null"
+"#NULL!",   "e"
+FALSE,      "b"
+TRUE,       "b"
+"FALSE",    "s"
+"TRUE",     "s"
+"",         "s"
+"ABC",      "s"
+"123",      "n"
+123,        "n"
+0.123,      "n"
+"-123",     "n"
+"1.23E4",   "n"
+"-1.23E4",  "n"
+"1.23E-4",  "n"
+"000123",   "s"
+"=123",     "f"
+"#DIV/0!",  "e"