/** | |
* Copyright (c) 2008-2010 Andrey Somov | |
* | |
* Licensed 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. | |
*/ | |
package org.yaml.snakeyaml.types; | |
import java.io.IOException; | |
import java.util.List; | |
import java.util.Map; | |
/** | |
* @see http://yaml.org/type/null.html | |
*/ | |
public class NullTagTest extends AbstractTest { | |
public void testNull() throws IOException { | |
assertNull("Got: '" + load("---\n") + "'", load("---\n")); | |
assertNull(load("---\n...")); | |
assertNull(load("---\n...\n")); | |
assertNull(load("\n")); | |
assertNull(load("")); | |
assertNull(load(" ")); | |
assertNull(load("~")); | |
assertNull(load("---\n~")); | |
assertNull(load("null")); | |
assertNull(load("Null")); | |
assertNull(load("NULL")); | |
assertNull(getMapValue("empty:\n", "empty")); | |
assertNull(getMapValue("canonical: ~", "canonical")); | |
assertNull(getMapValue("english: null", "english")); | |
assertNull(getMapValue("english: Null", "english")); | |
assertNull(getMapValue("english: NULL", "english")); | |
assertEquals("null key", getMapValue("~: null key\n", null)); | |
} | |
@SuppressWarnings("unchecked") | |
public void testSequenceNull() throws IOException { | |
String input = "---\n# This sequence has five\n# entries, two have values.\nsparse:\n - ~\n - 2nd entry\n -\n - 4th entry\n - Null\n"; | |
List<String> parsed = (List<String>) getMapValue(input, "sparse"); | |
assertEquals(5, parsed.size()); | |
assertNull(parsed.get(0)); | |
assertEquals("2nd entry", parsed.get(1)); | |
assertNull("Got: '" + parsed.get(2) + "'", parsed.get(2)); | |
assertEquals("4th entry", parsed.get(3)); | |
assertNull(parsed.get(4)); | |
} | |
public void testNullInMap() throws IOException { | |
String input = "key1: null\n~: value1"; | |
Map<String, Object> parsed = getMap(input); | |
assertEquals(2, parsed.size()); | |
assertTrue(parsed.containsKey(null)); | |
Object value1 = parsed.get(null); | |
assertEquals("value1", value1); | |
// | |
assertNull(parsed.get("key1")); | |
// | |
assertFalse(getMap("key2: value2").containsKey(null)); | |
} | |
public void testBoolShorthand() throws IOException { | |
assertNull(getMapValue("nothing: !!null null", "nothing")); | |
} | |
public void testBoolTag() throws IOException { | |
assertNull(getMapValue("nothing: !<tag:yaml.org,2002:null> null", "nothing")); | |
} | |
public void testBoolOut() throws IOException { | |
String output = dump(null); | |
assertEquals("null\n", output); | |
} | |
} |