add tests for ISOWEEKNUM

cell/.unit-tests/FormulaTests.js

@@ -2767,6 +2767,36 @@ $( function () {
 
     } );
 
+	test( "Test: \"ISOWEEKNUM\"", function () {
+
+		ws.getRange2( "A2" ).setValue( "3/9/2012" );
+
+	    oParser = new parserFormula( "ISOWEEKNUM(A2)", "A1", ws );
+		ok( oParser.parse() );
+		strictEqual( oParser.calculate().getValue(), 10 );
+
+		oParser = new parserFormula( "ISOWEEKNUM(123)", "A1", ws );
+		ok( oParser.parse() );
+		strictEqual( oParser.calculate().getValue(), 18 );
+
+		oParser = new parserFormula( "ISOWEEKNUM(120003)", "A1", ws );
+		ok( oParser.parse() );
+		strictEqual( oParser.calculate().getValue(), 30 );
+
+		oParser = new parserFormula( "ISOWEEKNUM(120003)", "A1", ws );
+		ok( oParser.parse() );
+		strictEqual( oParser.calculate().getValue(), 30 );
+
+		oParser = new parserFormula( "ISOWEEKNUM(-100)", "A1", ws );
+		ok( oParser.parse() );
+		strictEqual( oParser.calculate().getValue(), "#NUM!" );
+
+		oParser = new parserFormula( "ISOWEEKNUM(1203)", "A1", ws );
+		ok( oParser.parse() );
+		strictEqual( oParser.calculate().getValue(), 16 );
+
+	} );
+
 	test( "Test: \"WEIBULL\"", function () {
 
 		ws.getRange2( "A2" ).setValue( "105" );

cell/model/FormulaObjects/dateandtimeFunctions.js

@@ -1063,6 +1063,7 @@
 	cISOWEEKNUM.prototype.numFormat = AscCommonExcel.cNumFormatNone;
 	cISOWEEKNUM.prototype.isXLFN = true;
 	cISOWEEKNUM.prototype.Calculate = function (arg) {
+		//TODO есть различия в результатах с формулой ISOWEEKNUM(1)
 		var oArguments = this._prepareArguments(arg, arguments[1], true);
 		var argClone = oArguments.args;
 
@@ -1078,8 +1079,7 @@
 			return this.value = new cError(cErrorType.not_numeric);
 		}
 
-		return this.value =
-			new cNumber(weekNumber(Date.prototype.getDateFromExcel(arg0.getValue())));
+		return this.value = new cNumber(weekNumber(Date.prototype.getDateFromExcel(arg0.getValue())));
 	};
 
 	/**