public void ExtractTests()
{
ParsingHelper helper = new ParsingHelper(LongTest);
string s = "consecrated it";
Assert.IsTrue(helper.SkipTo(s));
int start = helper.Index;
helper.Next(s.Length);
Assert.AreEqual(s, helper.Extract(start, helper.Index));
Assert.AreEqual(@"consecrated it, far above our poor power to add or
detract. The world will little note, nor long remember what we say here, but it can never forget what they
did here. It is for us the living, rather, to be dedicated here to the unfinished work which they who fought
here have thus far so nobly advanced. It is rather for us to be here dedicated to the great task remaining
before us -- that from these honored dead we take increased devotion to that cause for which they gave the
last full measure of devotion -- that we here highly resolve that these dead shall not have died in vain --
that this nation, under God, shall have a new birth of freedom -- and that government of the people, by the
people, for the people, shall not perish from the earth.", helper.Extract(start));
Assert.AreEqual(LongTest, helper.Extract(0, LongTest.Length));
Assert.AreEqual("score", helper.Extract(5, 10));
Assert.AreNotEqual("score", helper.Extract(5, 11));
Assert.AreNotEqual("score", helper.Extract(4, 10));
Assert.AreEqual(string.Empty, helper.Extract(0, 0));
Assert.AreEqual(string.Empty, helper.Extract(LongTest.Length, LongTest.Length));
}
public void BasicTests()
{
ParsingHelper helper = new ParsingHelper(ShortTest);
// Initial state
Assert.AreEqual('\0', ParsingHelper.NullChar);
Assert.AreEqual(ShortTest, helper.Text);
Assert.AreEqual(0, helper.Index);
Assert.AreEqual(false, helper.EndOfText);
Assert.AreEqual(ShortTest.Length, helper.Remaining);
// Peek
Assert.AreEqual('F', helper.Peek());
Assert.AreEqual('o', helper.Peek(1));
Assert.AreEqual('u', helper.Peek(2));
Assert.AreEqual('r', helper.Peek(3));
Assert.AreEqual(ParsingHelper.NullChar, helper.Peek(1000));
Assert.AreEqual(ParsingHelper.NullChar, helper.Peek(-1000));
Assert.AreEqual(0, helper.Index);
// Get
Assert.AreEqual('F', helper.Get());
Assert.AreEqual('o', helper.Get());
Assert.AreEqual('u', helper.Get());
Assert.AreEqual('r', helper.Get());
Assert.AreEqual(4, helper.Index);
helper.Index = ShortTest.Length;
Assert.AreEqual(ParsingHelper.NullChar, helper.Get());
// Next
helper.Reset();
helper.Next();
Assert.AreEqual(1, helper.Index);
Assert.AreEqual('o', helper.Peek());
helper.Next(2);
Assert.AreEqual(3, helper.Index);
Assert.AreEqual('r', helper.Peek());
helper.Next(-2);
Assert.AreEqual(1, helper.Index);
Assert.AreEqual('o', helper.Peek());
Assert.AreEqual(false, helper.EndOfText);
Assert.AreEqual(ShortTest.Length - helper.Index, helper.Remaining);
helper.Next(10000);
Assert.AreEqual(helper.Text.Length, helper.Index);
Assert.AreEqual(true, helper.EndOfText);
Assert.AreEqual(0, helper.Remaining);
helper.Next(-10000);
Assert.AreEqual(0, helper.Index);
Assert.AreEqual(false, helper.EndOfText);
Assert.AreEqual(ShortTest.Length, helper.Remaining);
helper.Index = 10000;
Assert.AreEqual(ShortTest.Length, helper.Index);
Assert.AreEqual(true, helper.EndOfText);
Assert.AreEqual(0, helper.Remaining);
helper.Index = -10000;
Assert.AreEqual(0, helper.Index);
Assert.AreEqual(false, helper.EndOfText);
Assert.AreEqual(ShortTest.Length, helper.Remaining);
helper.Index = 0;
Assert.AreEqual(0, helper.Index);
Assert.AreEqual(ShortTest.Length, helper.Remaining);
Assert.AreEqual(false, helper.EndOfText);
helper.Index = helper.Text.Length;
Assert.AreEqual(helper.Text.Length, helper.Index);
Assert.AreEqual(0, helper.Remaining);
Assert.AreEqual(true, helper.EndOfText);
helper.Index = 5;
Assert.AreEqual(5, helper.Index);
Assert.AreEqual(ShortTest.Length - 5, helper.Remaining);
Assert.AreEqual(false, helper.EndOfText);
helper.Reset();
Assert.AreEqual(0, helper.Index);
Assert.AreEqual(ShortTest, helper.Text);
helper.Reset(null);
Assert.AreEqual(0, helper.Index);
Assert.AreEqual(string.Empty, helper.Text);
Assert.AreEqual(true, helper.EndOfText);
Assert.AreEqual(0, helper.Remaining);
}
public void ParseTests()
{
ParsingHelper helper = new ParsingHelper(LongTest);
Assert.IsTrue(helper.SkipTo("score"));
Assert.AreEqual("score and seven years ago our ", helper.ParseTo("fathers"));
Assert.AreEqual('f', helper.Peek());
helper.Reset();
Assert.IsTrue(helper.SkipTo("score"));
Assert.AreEqual("score and seven years ago our ", helper.ParseTo("FATHERS", StringComparison.OrdinalIgnoreCase));
Assert.AreEqual('f', helper.Peek());
helper.Reset();
Assert.IsTrue(helper.SkipTo("score"));
Assert.AreEqual("score and se", helper.ParseTo('v', 'X', 'Y', 'Z'));
Assert.AreEqual('v', helper.Peek());
helper.Reset();
Assert.IsTrue(helper.SkipTo("score"));
Assert.AreEqual("score", helper.Parse('e', 'r', 'o', 'c', 's'));
Assert.AreEqual(' ', helper.Peek());
Assert.AreEqual(" ", helper.Parse(' '));
Assert.AreEqual('a', helper.Peek());
helper.Reset();
Assert.IsTrue(helper.SkipTo("score"));
Assert.AreEqual("score and seven years ago our fathers brought forth on this continent", helper.ParseWhile(c => c != ','));
Assert.AreEqual(',', helper.Peek());
helper.Next(); // Skip comma
Assert.AreEqual("a", helper.ParseToken(char.IsWhiteSpace));
Assert.AreEqual(' ', helper.Peek());
Assert.AreEqual('n', helper.Peek(1));
helper.Reset();
Assert.AreEqual("Four", helper.ParseToken(' ', '\r', '\n'));
Assert.AreEqual(' ', helper.Peek());
string parseAllText = " \t\tthe \r\n\t\t rain in\t\t spain\r\n falls\r\nmainly on\tthe\r\nplain. ";
string[] parseAllResults = new[] { "the", "rain", "in", "spain", "falls", "mainly", "on", "the", "plain" };
helper.Reset(parseAllText);
CollectionAssert.AreEqual(parseAllResults, helper.ParseTokens(' ', '\t', '\r', '\n', '.').ToList());
helper.Reset();
CollectionAssert.AreEqual(parseAllResults, helper.ParseTokens(c => " \t\r\n.".Contains(c)).ToList());
// ParseCharacter
helper.Reset("abc");
Assert.AreEqual("a", helper.ParseCharacter());
Assert.AreEqual("b", helper.ParseCharacter());
Assert.AreEqual("c", helper.ParseCharacter());
Assert.AreEqual("", helper.ParseCharacter());
// ParseCharacters
helper.Reset("abcdefg");
Assert.AreEqual("", helper.ParseCharacters(0));
Assert.AreEqual("", helper.ParseCharacters(-1));
Assert.AreEqual("a", helper.ParseCharacters(1));
Assert.AreEqual("bc", helper.ParseCharacters(2));
Assert.AreEqual("def", helper.ParseCharacters(3));
Assert.AreEqual("g", helper.ParseCharacters(10));
Assert.AreEqual("", helper.ParseCharacters(10));
}