Merge of apache-velocity-engine from aosp/masteraml_tz4_332714010

Bug: 262898801
Test: mma
Change-Id: I68491a2e8b89245a1bff44d86023cec475ff902d

1 files changed, 120 insertions, 0 deletions

diff --git a/velocity-engine-core/src/test/java/org/apache/velocity/test/IfEmptyNoEmptyCheckTestCase.java b/velocity-engine-core/src/test/java/org/apache/velocity/test/IfEmptyNoEmptyCheckTestCase.java
new file mode 100644
index 00000000..2935100c
--- /dev/null
+++ b/velocity-engine-core/src/test/java/org/apache/velocity/test/IfEmptyNoEmptyCheckTestCase.java
@@ -0,0 +1,120 @@
+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.app.VelocityEngine;
+import org.apache.velocity.runtime.RuntimeConstants;
+
+import java.util.Collections;
+
+/**
+ * Used to check that empty values are properly handled in #if statements
+ */
+public class IfEmptyNoEmptyCheckTestCase extends BaseTestCase
+{
+    public IfEmptyNoEmptyCheckTestCase(final String name)
+    {
+        super(name);
+    }
+
+    @Override
+    protected void setUpEngine(VelocityEngine engine)
+    {
+        engine.setProperty(RuntimeConstants.CHECK_EMPTY_OBJECTS, "false");
+    }
+
+    protected void assertEmpty(Object obj)
+    {
+        context.put("obj", obj);
+        assertEvalEquals("", "#if( $obj )fail#end");
+    }
+
+    protected void assertNotEmpty(Object obj)
+    {
+        context.put("obj", obj);
+        assertEvalEquals("", "#if( !$obj )fail#end");
+    }
+
+    public void testNull()
+    {
+        assertEmpty(null);
+        assertNotEmpty(new NullAsString());
+        assertNotEmpty(new NullAsNumber());
+    }
+
+    public void testDataStructures()
+    {
+        assertNotEmpty(Collections.emptyMap());
+        assertNotEmpty(Collections.emptyList());
+        assertNotEmpty(new Object[]{});
+    }
+
+    public void testString()
+    {
+        assertNotEmpty("");
+        assertNotEmpty(new EmptyAsString());
+    }
+
+    public void testNumber()
+    {
+        assertNotEmpty(0);
+    }
+
+    public void testStringBuilder()
+    {
+        StringBuilder builder = new StringBuilder();
+        assertNotEmpty(builder);
+    }
+
+    public void testLiterals()
+    {
+        assertEvalEquals("", "#if( !0 )fail#end");
+        assertEvalEquals("", "#if( !0.0 )fail#end");
+        assertEvalEquals("", "#if( !'' )fail#end");
+        assertEvalEquals("", "#if( !\"\" )fail#end");
+        assertEvalEquals("", "#if( ![] )fail#end");
+        assertEvalEquals("", "#if( !{} )fail#end");
+    }
+
+    public static class NullAsString
+    {
+        public String getAsString()
+        {
+            return null;
+        }
+    }
+
+    public static class EmptyAsString
+    {
+        public String getAsString()
+        {
+            return "";
+        }
+    }
+
+    public static class NullAsNumber
+    {
+        public String getAsNumber()
+        {
+            return null;
+        }
+    }
+
+}