| package org.apache.velocity.test; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| import org.apache.velocity.VelocityContext; |
| |
| /** |
| * Used to check that nulls are properly handled in #if statements |
| */ |
| public class IfNullTestCase extends BaseEvalTestCase |
| { |
| public IfNullTestCase(final String name) |
| { |
| super(name); |
| } |
| |
| protected void setContext(VelocityContext context) |
| { |
| context.put("nullToString", new NullToString()); |
| context.put("notnull", new Object()); |
| } |
| |
| public void testIfEquals() |
| { |
| // both null |
| assertEvalEquals("foo", "#if( $null == $otherNull )foo#{else}bar#end"); |
| assertEvalEquals("foo", "#if( $null == $nullToString )foo#{else}bar#end"); |
| assertEvalEquals("foo", "#if( $nullToString == $null )foo#{else}bar#end"); |
| // left null, right not |
| assertEvalEquals("bar", "#if( $nullToString == $notnull )foo#{else}bar#end"); |
| assertEvalEquals("bar", "#if( $null == $notnull )foo#{else}bar#end"); |
| // right null, left not |
| assertEvalEquals("bar", "#if( $notnull == $nullToString )foo#{else}bar#end"); |
| assertEvalEquals("bar", "#if( $notnull == $null )foo#{else}bar#end"); |
| } |
| |
| public void testIfNotEquals() |
| { |
| // both null |
| assertEvalEquals("bar", "#if( $null != $otherNull )foo#{else}bar#end"); |
| assertEvalEquals("bar", "#if( $null != $nullToString )foo#{else}bar#end"); |
| assertEvalEquals("bar", "#if( $nullToString != $null )foo#{else}bar#end"); |
| // left null, right not |
| assertEvalEquals("foo", "#if( $nullToString != $notnull )foo#{else}bar#end"); |
| assertEvalEquals("foo", "#if( $null != $notnull )foo#{else}bar#end"); |
| // right null, left not |
| assertEvalEquals("foo", "#if( $notnull != $nullToString )foo#{else}bar#end"); |
| assertEvalEquals("foo", "#if( $notnull != $null )foo#{else}bar#end"); |
| } |
| |
| public void testIfValue() |
| { |
| assertEvalEquals("bar", "#if( $null )foo#{else}bar#end"); |
| assertEvalEquals("bar", "#if( $nullToString )foo#{else}bar#end"); |
| assertEvalEquals("foo", "#if( !$null )foo#{else}bar#end"); |
| assertEvalEquals("foo", "#if( !$nullToString )foo#{else}bar#end"); |
| } |
| |
| public static class NullToString |
| { |
| public String toString() |
| { |
| return null; |
| } |
| } |
| |
| } |
| |
| |