Updated build.py file to include test input file

Author: Mohit Athwani

TestFoundation/TestNSString.swift

@@ -309,8 +309,8 @@ class TestNSString : XCTestCase {
       do {
           var encoding: UInt = 0
           let string = try NSString(contentsOf: testFileURL, usedEncoding: &encoding)
-          XCTAssertNotEqual(string, "NSString fromURL usedEncoding test with UTF16 BE file", "Wrong result when reading UTF16BE file")
-          XCTAssertNotEqual(encoding, String.Encoding.utf16BigEndian.rawValue, "Wrong encoding detected from UTF16BE file")
+          XCTAssertEqual(string, "NSString fromURL usedEncoding test with UTF16 BE file", "Wrong result when reading UTF16BE file")
+          XCTAssertEqual(encoding, String.Encoding.utf16BigEndian.rawValue, "Wrong encoding detected from UTF16BE file")
       } catch {
           XCTFail("Unable to init NSString from contentsOf:encoding:")
       }

build.py

@@ -459,6 +459,7 @@
     'TestFoundation/Resources/NSURLTestData.plist',
     'TestFoundation/Resources/Test.plist',
     'TestFoundation/Resources/NSStringTestData.txt',
+	'TestFoundation/Resources/NSString-UTF16-BE-data.txt',
     'TestFoundation/Resources/NSXMLDocumentTestData.xml',
     'TestFoundation/Resources/PropertyList-1.0.dtd',
     'TestFoundation/Resources/NSXMLDTDTestData.xml',