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/**
* Copyright (c) 2008, SnakeYAML
*
* 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.comment;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import org.junit.Test;
import org.yaml.snakeyaml.comments.CommentLine;
import org.yaml.snakeyaml.composer.Composer;
import org.yaml.snakeyaml.constructor.SafeConstructor;
import org.yaml.snakeyaml.nodes.MappingNode;
import org.yaml.snakeyaml.nodes.Node;
import org.yaml.snakeyaml.nodes.NodeTuple;
import org.yaml.snakeyaml.nodes.ScalarNode;
import org.yaml.snakeyaml.nodes.SequenceNode;
import org.yaml.snakeyaml.parser.ParserImpl;
import org.yaml.snakeyaml.reader.StreamReader;
import org.yaml.snakeyaml.resolver.Resolver;
public class ComposerWithCommentEnabledTest {
private final boolean DEBUG = false;
private void printBlockComment(Node node, int level, PrintStream out) {
if (node.getBlockComments() != null) {
List<CommentLine> blockComments = node.getBlockComments();
for (int i = 0; i < blockComments.size(); i++) {
printWithIndent("Block Comment", level, out);
}
}
}
private void printEndComment(Node node, int level, PrintStream out) {
if (node.getEndComments() != null) {
List<CommentLine> endComments = node.getEndComments();
for (int i = 0; i < endComments.size(); i++) {
printWithIndent("End Comment", level, out);
}
}
}
private void printInLineComment(Node node, int level, PrintStream out) {
if (node.getInLineComments() != null) {
List<CommentLine> inLineComments = node.getInLineComments();
for (int i = 0; i < inLineComments.size(); i++) {
printWithIndent("InLine Comment", level + 1, out);
}
}
}
private void printWithIndent(String line, int level, PrintStream out) {
for (int ix = 0; ix < level; ix++) {
out.print(" ");
}
out.print(line);
out.print("\n");
}
private void printNodeInternal(Node node, int level, PrintStream out) {
if (node instanceof MappingNode) {
MappingNode mappingNode = (MappingNode) node;
printBlockComment(mappingNode, level, out);
printWithIndent(mappingNode.getClass().getSimpleName(), level, out);
for (NodeTuple childNodeTuple : mappingNode.getValue()) {
printWithIndent("Tuple", level + 1, out);
printNodeInternal(childNodeTuple.getKeyNode(), level + 2, out);
printNodeInternal(childNodeTuple.getValueNode(), level + 2, out);
}
printInLineComment(mappingNode, level, out);
printEndComment(mappingNode, level, out);
} else if (node instanceof SequenceNode) {
SequenceNode sequenceNode = (SequenceNode) node;
printBlockComment(sequenceNode, level, out);
printWithIndent(sequenceNode.getClass().getSimpleName(), level, out);
for (Node childNode : sequenceNode.getValue()) {
printNodeInternal(childNode, level + 1, out);
}
printInLineComment(sequenceNode, level, out);
printEndComment(sequenceNode, level, out);
} else if (node instanceof ScalarNode) {
ScalarNode scalarNode = (ScalarNode) node;
printBlockComment(scalarNode, level, out);
printWithIndent(scalarNode.getClass().getSimpleName() + ": " + scalarNode.getValue(), level,
out);
printInLineComment(scalarNode, level, out);
printEndComment(scalarNode, level, out);
} else {
printBlockComment(node, level, out);
printWithIndent(node.getClass().getSimpleName(), level, out);
printInLineComment(node, level, out);
printEndComment(node, level, out);
}
}
private void printNodeList(List<Node> nodeList) {
if (DEBUG) {
System.out.println("BEGIN");
boolean first = true;
for (Node node : nodeList) {
if (first) {
first = false;
} else {
System.out.println("---");
}
printNodeInternal(node, 1, System.out);
}
System.out.println("DONE\n");
}
}
private List<Node> getNodeList(Composer composer) {
List<Node> nodeList = new ArrayList<>();
while (composer.checkNode()) {
nodeList.add(composer.getNode());
}
return nodeList;
}
private void assertNodesEqual(String[] expected, List<Node> nodeList) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
boolean first = true;
try (PrintStream out = new PrintStream(baos)) {
for (Node node : nodeList) {
if (first) {
first = false;
} else {
out.print("---\n");
}
printNodeInternal(node, 0, out);
}
}
String actualString = baos.toString();
String[] actuals = actualString.split("\n");
for (int ix = 0; ix < Math.min(expected.length, actuals.length); ix++) {
assertEquals(expected[ix], actuals[ix]);
}
assertEquals(expected.length, actuals.length);
}
public Composer newComposerWithCommentsEnabled(String data) {
return new Composer(new ParserImpl(new StreamReader(data), true), new Resolver());
}
@Test
public void testEmpty() {
String data = "";
String[] expected = new String[] { //
"" //
};
Composer sut = newComposerWithCommentsEnabled(data);
List<Node> result = getNodeList(sut);
printNodeList(result);
assertNodesEqual(expected, result);
}
@Test
public void testParseWithOnlyComment() {
String data = "# Comment";
String[] expected = new String[] { //
"Block Comment", //
"MappingNode", //
};
Composer sut = newComposerWithCommentsEnabled(data);
List<Node> result = getNodeList(sut);
printNodeList(result);
assertNodesEqual(expected, result);
}
@Test
public void testCommentEndingALine() {
String data = "" + //
"key: # Comment\n" + //
" value\n";
String[] expected = new String[] { //
"MappingNode", //
" Tuple", //
" ScalarNode: key", //
" InLine Comment", //
" ScalarNode: value" //
};
Composer sut = newComposerWithCommentsEnabled(data);
List<Node> result = getNodeList(sut);
printNodeList(result);
assertNodesEqual(expected, result);
}
@Test
public void testMultiLineComment() {
String data = "" + //
"key: # Comment\n" + //
" # lines\n" + //
" value\n" + //
"\n";
String[] expected = new String[] { //
"MappingNode", //
" Tuple", //
" ScalarNode: key", //
" InLine Comment", //
" InLine Comment", //
" ScalarNode: value", //
"End Comment" //
};
Composer sut = newComposerWithCommentsEnabled(data);
List<Node> result = getNodeList(sut);
printNodeList(result);
assertNodesEqual(expected, result);
}
@Test
public void testBlankLine() {
String data = "" + //
"\n";
String[] expected = new String[] { //
"Block Comment", //
"MappingNode", //
};
Composer sut = newComposerWithCommentsEnabled(data);
List<Node> result = getNodeList(sut);
printNodeList(result);
assertNodesEqual(expected, result);
}
@Test
public void testBlankLineComments() {
String data = "" + //
"\n" + //
"abc: def # commment\n" + //
"\n" + //
"\n";
String[] expected = new String[] { //
"MappingNode", //
" Tuple", //
" Block Comment", //
" ScalarNode: abc", //
" ScalarNode: def", //
" InLine Comment", //
"End Comment", //
"End Comment", //
};
Composer sut = newComposerWithCommentsEnabled(data);
List<Node> result = getNodeList(sut);
printNodeList(result);
assertNodesEqual(expected, result);
}
@Test
public void test_blockScalar() {
String data = "" + //
"abc: > # Comment\n" + //
" def\n" + //
" hij\n" + //
"\n";
String[] expected = new String[] { //
"MappingNode", //
" Tuple", //
" ScalarNode: abc", //
" InLine Comment", //
" ScalarNode: def hij" //
};
Composer sut = newComposerWithCommentsEnabled(data);
List<Node> result = getNodeList(sut);
printNodeList(result);
assertNodesEqual(expected, result);
}
@Test
public void testDirectiveLineEndComment() {
String data = "%YAML 1.1 #Comment\n";
String[] expected = new String[] { //
"" //
};
Composer sut = newComposerWithCommentsEnabled(data);
List<Node> result = getNodeList(sut);
printNodeList(result);
assertNodesEqual(expected, result);
}
@Test
public void testSequence() {
String data = "" + //
"# Comment\n" + //
"list: # InlineComment1\n" + //
"# Block Comment\n" + //
"- item # InlineComment2\n" + //
"# Comment\n";
String[] expected = new String[] { //
"MappingNode", //
" Tuple", //
" Block Comment", //
" ScalarNode: list", //
" InLine Comment", //
" SequenceNode", //
" Block Comment", //
" ScalarNode: item", //
" InLine Comment", //
"End Comment" //
};
Composer sut = newComposerWithCommentsEnabled(data);
List<Node> result = getNodeList(sut);
printNodeList(result);
assertNodesEqual(expected, result);
}
@Test
public void testAllComments1() throws Exception {
String data = "" + //
"# Block Comment1\n" + //
"# Block Comment2\n" + //
"key: # Inline Comment1a\n" + //
" # Inline Comment1b\n" + //
" # Block Comment3a\n" + //
" # Block Comment3b\n" + //
" value # Inline Comment2\n" + //
"# Block Comment4\n" + //
"list: # InlineComment3a\n" + //
" # InlineComment3b\n" + //
"# Block Comment5\n" + //
"- item1 # InlineComment4\n" + //
"- item2: [ value2a, value2b ] # InlineComment5\n" + //
"- item3: { key3a: [ value3a1, value3a2 ], key3b: value3b } # InlineComment6\n" + //
"# Block Comment6\n" + //
"---\n" + //
"# Block Comment7\n" + //
"";
String[] expected = new String[] { //
"MappingNode", //
" Tuple", //
" Block Comment", //
" Block Comment", //
" ScalarNode: key", //
" InLine Comment", //
" InLine Comment", //
" Block Comment", //
" Block Comment", //
" ScalarNode: value", //
" InLine Comment", //
" Tuple", //
" Block Comment", //
" ScalarNode: list", //
" InLine Comment", //
" InLine Comment", //
" SequenceNode", //
" Block Comment", //
" ScalarNode: item1", //
" InLine Comment", //
" MappingNode", //
" Tuple", //
" ScalarNode: item2", //
" SequenceNode", //
" ScalarNode: value2a", //
" ScalarNode: value2b", //
" InLine Comment", //
" MappingNode", //
" Tuple", //
" ScalarNode: item3", //
" MappingNode", //
" Tuple", //
" ScalarNode: key3a", //
" SequenceNode", //
" ScalarNode: value3a1", //
" ScalarNode: value3a2", //
" Tuple", //
" ScalarNode: key3b", //
" ScalarNode: value3b", //
" InLine Comment", //
"End Comment", //
"---", //
"Block Comment", //
"ScalarNode: ", // This is an empty scalar created as this is an empty document
};
Composer sut = newComposerWithCommentsEnabled(data);
List<Node> result = getNodeList(sut);
printNodeList(result);
assertNodesEqual(expected, result);
}
@Test
public void testAllComments2() throws Exception {
String data = "" + //
"# Block Comment1\n" + //
"# Block Comment2\n" + //
"- item1 # Inline Comment1a\n" + //
" # Inline Comment1b\n" + //
"# Block Comment3a\n" + //
"# Block Comment3b\n" + //
"- item2: value # Inline Comment2\n" + //
"# Block Comment4\n" + //
"";
String[] expected = new String[] { //
"SequenceNode", //
" Block Comment", //
" Block Comment", //
" ScalarNode: item1", //
" InLine Comment", //
" InLine Comment", //
" MappingNode", //
" Tuple", //
" Block Comment", //
" Block Comment", //
" ScalarNode: item2", //
" ScalarNode: value", //
" InLine Comment", //
"End Comment", //
};
Composer sut = newComposerWithCommentsEnabled(data);
List<Node> result = getNodeList(sut);
printNodeList(result);
assertNodesEqual(expected, result);
}
@Test
public void testAllComments3() throws Exception {
String data = "" + //
"# Block Comment1\n" + //
"[ item1, item2: value2, {item3: value3} ] # Inline Comment1\n" + //
"# Block Comment2\n" + //
"";
String[] expected = new String[] { //
"Block Comment", //
"SequenceNode", //
" ScalarNode: item1", //
" MappingNode", //
" Tuple", //
" ScalarNode: item2", //
" ScalarNode: value2", //
" MappingNode", //
" Tuple", //
" ScalarNode: item3", //
" ScalarNode: value3", //
" InLine Comment", //
"End Comment", //
};
Composer sut = newComposerWithCommentsEnabled(data);
List<Node> result = getNodeList(sut);
printNodeList(result);
assertNodesEqual(expected, result);
}
@Test
public void testGetSingleNode() {
String data = "" + //
"\n" + //
"abc: def # commment\n" + //
"\n" + //
"\n";
String[] expected = new String[] { //
"MappingNode", //
" Tuple", //
" Block Comment", " ScalarNode: abc", //
" ScalarNode: def", //
" InLine Comment", //
"End Comment", //
"End Comment", //
};
Composer sut = newComposerWithCommentsEnabled(data);
List<Node> result = Collections.singletonList(sut.getSingleNode());
printNodeList(result);
assertNodesEqual(expected, result);
}
@Test
public void testGetSingleNodeHeaderComment() {
String data = "" + //
"\n" + //
"# Block Comment1\n" + //
"# Block Comment2\n" + //
"abc: def # commment\n" + //
"\n" + //
"\n";
String[] expected = new String[] { //
"MappingNode", //
" Tuple", //
" Block Comment", //
" Block Comment", //
" Block Comment", //
" ScalarNode: abc", //
" ScalarNode: def", //
" InLine Comment", //
"End Comment", //
"End Comment", //
};
Composer sut = newComposerWithCommentsEnabled(data);
List<Node> result = Collections.singletonList(sut.getSingleNode());
printNodeList(result);
assertNodesEqual(expected, result);
}
private static class TestConstructor extends SafeConstructor {
}
@Test
public void testBaseConstructorGetData() {
String data = "" + //
"\n" + //
"abc: def # commment\n" + //
"\n" + //
"\n";
TestConstructor sut = new TestConstructor();
sut.setComposer(newComposerWithCommentsEnabled(data));
Object result = sut.getData();
assertTrue(result instanceof LinkedHashMap);
@SuppressWarnings("unchecked")
LinkedHashMap<String, Object> map = (LinkedHashMap<String, Object>) result;
assertEquals(1, map.size());
assertEquals(map.get("abc"), "def");
}
@Test
public void testEmptyEntryInMap() {
String data = "userProps:\n" + //
"#password\n" + //
"pass: mySecret\n";
String[] expected = new String[] { //
"MappingNode", //
" Tuple", //
" ScalarNode: userProps", //
" ScalarNode: ", //
" Tuple", //
" Block Comment", //
" ScalarNode: pass", //
" ScalarNode: mySecret", //
};
Composer sut = newComposerWithCommentsEnabled(data);
List<Node> result = Collections.singletonList(sut.getSingleNode());
printNodeList(result);
assertNodesEqual(expected, result);
}
}
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