Calendar: Clear value if an invalid min / max option value was given

Author: fnagel

tests/unit/calendar/options.js

@@ -187,7 +187,7 @@ test( "showWeek", function() {
 } );
 
 test( "min / max", function( assert ) {
-	assert.expect( 17 );
+	assert.expect( 19 );
 
 	// With existing date
 	var prevButton = this.widget.find( ".ui-calendar-prev" ),
@@ -231,6 +231,14 @@ test( "min / max", function( assert ) {
 		.calendar( "value", "1/4/09" );
 	equal( this.element.calendar( "valueAsDate" ), null, "Min/max - value > max" );
 
+	this.element.calendar( "option", { min: minDate } );
+	this.element.calendar( "option", { min: "invalid" } );
+	equal( this.element.calendar( "option", "min" ), null, "Min/max - invalid" );
+
+	this.element.calendar( "option", { min: maxDate } );
+	this.element.calendar( "option", { max: null } );
+	equal( this.element.calendar( "option", "max" ), null, "Min/max - null" );
+
 	this.element
 		.calendar( "option", { min: minDate, max: maxDate } )
 		.calendar( "value", "3/4/08" );

ui/widgets/calendar.js

@@ -723,7 +723,9 @@ return $.widget( "ui.calendar", {
 		}
 
 		if ( key === "max" || key === "min" ) {
-			if ( $.type( value ) === "date" || value === null ) {
+			if ( $.type( value ) !== "date" || value === null ) {
+				this._super( key, null );
+			} else {
 				this._super( key, value );
 			}
 			return;