--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/org/tmatesoft/hg/test/TestConfigFileParser.java	Thu Oct 25 19:59:08 2012 +0200
@@ -0,0 +1,197 @@
+/*
+ * Copyright (c) 2012 TMate Software Ltd
+ *  
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * For information on how to redistribute this software under
+ * the terms of a license other than GNU General Public License
+ * contact TMate Software at support@hg4j.com
+ */
+package org.tmatesoft.hg.test;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.tmatesoft.hg.internal.ConfigFileParser;
+
+/**
+ * 
+ * @author Artem Tikhomirov
+ * @author TMate Software Ltd.
+ */
+public class TestConfigFileParser {
+
+	@Test
+	public void testParseOnly() throws IOException {
+		doTest("".getBytes(), new byte[0]);
+		// line comments
+		byte[] inp = " # line comment \n; and another one".getBytes();
+		doTest(inp, inp);
+		// comments inside sections
+		inp = "[section1]\nkey1 = value\n # line comment\n[section2]\nkey2 = ;just presence\n".getBytes();
+		doTest(inp, inp);
+		// empty value
+		inp = "[section1]\nkey1 = \n".getBytes();
+		doTest(inp, inp);
+		// multiline values
+		inp = "[section1]\nkey1 = a,\n  b,\n  c\nkey2=\n  xyz\n".getBytes();
+		doTest(inp, inp);
+		// entry without EOL
+		inp = "[section1]\nkey1 = value".getBytes();
+		doTest(inp, inp);
+		// empty section
+		inp = "[section1]\nkey1 = value\n[section2]\n".getBytes();
+		doTest(inp, inp);
+	}
+	
+	@Test
+	public void testLookup() throws IOException {
+		byte[] inp = "[section1]\nkey1 = a,\n  b,\n  c\nkey2=\n  xyz\n\n[section2]\nkey3=\n".getBytes();
+		doTest(inp, inp, new Inspector() {
+			
+			public void visit(ConfigFileParser p) {
+				Assert.assertTrue(p.exists("section1", "key1"));
+				Assert.assertTrue(p.exists("section1", "key2"));
+				Assert.assertFalse(p.exists("section1", "key3"));
+				
+				Assert.assertTrue(p.exists("section2", "key3"));
+				Assert.assertFalse(p.exists("section2", "key1"));
+				Assert.assertFalse(p.exists("section2", "key2"));
+			}
+		});
+	}
+
+	@Test
+	public void testAddChangeEntries() throws IOException {
+		byte[] inp = "\n; line comment1\n[sect-a]\nkey1 = value1\n\n[sect-b]\nkey2=value2\n".getBytes();
+		byte[] exp = "\n; line comment1\n[sect-a]\nkey1 = value1\nkey3 = value3\n\n[sect-b]\nkey2=valueX\n".getBytes();
+		doTest(inp, exp, new Inspector() {
+			
+			public void visit(ConfigFileParser p) {
+				Assert.assertTrue(p.exists("sect-b", "key2"));
+				p.add("sect-a", "key3", "value3");
+				p.change("sect-b", "key2", "valueX");
+			}
+		});
+	}
+
+	@Test
+	public void testAdditionTwoSectionsSameName() throws IOException {
+		byte[] inp = "[sect-a]\nkey1=value1\n\n[sect-b]\nkey2=\n\n[sect-a]\nkey3=value3\n".getBytes();
+		byte[] exp = "[sect-a]\nkey1=value1\nkey4 = value4\n\n[sect-b]\nkey2=\n\n[sect-a]\nkey3=value3\n".getBytes();
+		doTest(inp, exp, new Inspector() {
+			
+			public void visit(ConfigFileParser p) {
+				p.add("sect-a", "key4", "value4");
+			}
+		});
+	}
+	
+	@Test
+	public void testDeleteTwoSubsequentKeys() throws IOException{
+		byte[] inp = "# line comment1\n\n[sect-a]\nkey1=value1\nkey2=value2\n#line comment2\nkey3=value3\n".getBytes();
+		byte[] exp = "# line comment1\n\n[sect-a]\n\n\n#line comment2\nkey3=value3\n".getBytes();
+		doTest(inp, exp, new Inspector() {
+			
+			public void visit(ConfigFileParser p) {
+				p.delete("sect-a", "key1");
+				p.delete("sect-a", "key2");
+			}
+		});
+	}
+	
+	@Test
+	public void testDeleteLastKeyInSection() throws IOException {
+		String text1 = "[sect-a]\nkey0 = value 0\n%skey1=value1\n%s[sect-b]\nkey3=value3\n";
+		String text2 = "[sect-a]\nkey0 = value 0\n%s\n%s[sect-b]\nkey3=value3\n";
+		withTwoCommentsDeleteKey1(text1, text2);
+	}
+
+	@Test
+	public void testDeleteFirstKeyInSection() throws IOException {
+		String text1 = "[sect-a]\n%skey1=value1\n%skey2 = value 2\n[sect-b]\nkey3=value3\n";
+		String text2 = "[sect-a]\n%s\n%skey2 = value 2\n[sect-b]\nkey3=value3\n";
+		withTwoCommentsDeleteKey1(text1, text2);
+	}
+	
+	@Test
+	public void testOnlyKeyInSection() throws IOException {
+		String text1 = "[sect-a]\n%skey1=value1\n%s[sect-b]\nkey3=value3\n";
+		String text2 = "[sect-a]\n%s\n%s[sect-b]\nkey3=value3\n";
+		withTwoCommentsDeleteKey1(text1, text2);
+	}
+	
+	private void withTwoCommentsDeleteKey1(String text1, String text2) throws IOException {
+		String comment = "# line comment\n";
+		Inspector insp = new Inspector() {
+			
+			public void visit(ConfigFileParser p) {
+				p.delete("sect-a", "key1");
+			}
+		};
+
+		byte[] inp = String.format(text1, "", "").getBytes();
+		byte[] exp = String.format(text2, "", "").getBytes();
+		doTest(inp, exp, insp);
+		inp = String.format(text1, comment, "").getBytes();
+		exp = String.format(text2, comment, "").getBytes();
+		doTest(inp, exp, insp);
+		inp = String.format(text1, "", comment).getBytes();
+		exp = String.format(text2, "", comment).getBytes();
+		doTest(inp, exp, insp);
+		inp = String.format(text1, comment, comment).getBytes();
+		exp = String.format(text2, comment, comment).getBytes();
+		doTest(inp, exp, insp);
+	}
+
+	@Test
+	public void testAddEntryToEmptySection() throws IOException {
+		String text1 = "[sect-a]\n%s[sect-b]\nkey3=value3\n";
+		String text2 = "[sect-a]\n%skey1 = value1\n[sect-b]\nkey3=value3\n";
+		String comment = "# line comment2\n";
+		Inspector insp = new Inspector() {
+			
+			public void visit(ConfigFileParser p) {
+				p.add("sect-a", "key1", "value1");
+			}
+		};
+
+		byte[] inp = String.format(text1, "").getBytes();
+		byte[] exp = String.format(text2, "").getBytes();
+		doTest(inp, exp, insp);
+		inp = String.format(text1, comment).getBytes();
+		exp = String.format(text2, comment).getBytes();
+		doTest(inp, exp, insp);
+	}
+	
+
+	private void doTest(byte[] input, byte[] expected) throws IOException {
+		doTest(input, expected, null);
+	}
+
+	private void doTest(byte[] input, byte[] expected, Inspector insp) throws IOException {
+		ConfigFileParser p = new ConfigFileParser();
+		p.parse(new ByteArrayInputStream(input));
+		if (insp != null) {
+			insp.visit(p);
+		}
+		ByteArrayOutputStream out = new ByteArrayOutputStream(input.length);
+		p.update(out);
+		byte[] result = out.toByteArray();
+		Assert.assertArrayEquals(expected, result);
+	}
+
+	interface Inspector {
+		void visit(ConfigFileParser p);
+	}
+}