public void GetCarriageReturnNewLineAsEndOfLine()
{
Lexer lexer = new Lexer("\r\n");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.EndOfLine, token.Type);
Assert.IsNull(lexer.NextToken());
}
public void GetNameAndSkipComment()
{
Lexer lexer = new Lexer("foo # this is a name");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual("foo", token.Value);
Assert.AreEqual(TokenType.Name, token.Type);
Assert.IsNull(lexer.NextToken());
}
public void GetName()
{
Lexer lexer = new Lexer("foo");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual("foo", token.Value);
Assert.AreEqual(TokenType.Name, token.Type);
Assert.IsNull(lexer.NextToken());
}
public void GetLessOrEqualAsOperator()
{
Lexer lexer = new Lexer("<=");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual("<=", token.Value);
Assert.AreEqual(TokenType.Operator, token.Type);
Assert.IsNull(lexer.NextToken());
}
public void GetInteger()
{
Lexer lexer = new Lexer("123");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual("123", token.Value);
Assert.AreEqual(TokenType.Integer, token.Type);
Assert.IsNull(lexer.NextToken());
}
public void GetGreaterOperator()
{
Lexer lexer = new Lexer(">");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(">", token.Value);
Assert.AreEqual(TokenType.Operator, token.Type);
Assert.IsNull(lexer.NextToken());
}
public void GetNameSkipCommentAndGetEndOfLineName()
{
Lexer lexer = new Lexer("foo# this is a name\r\nbar");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual("foo", token.Value);
Assert.AreEqual(TokenType.Name, token.Type);
token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.EndOfLine, token.Type);
token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual("bar", token.Value);
Assert.AreEqual(TokenType.Name, token.Type);
Assert.IsNull(lexer.NextToken());
}
public void RaiseWhenUnclosedString()
{
Lexer lexer = new Lexer("\"foo");
MyAssert.Throws<LexerException>(() => lexer.NextToken(),
"Unclosed String");
}
public void RaiseWhenInvalidCharacter()
{
Lexer lexer = new Lexer("[");
MyAssert.Throws<LexerException>(() => lexer.NextToken(),
"Unexpected '['");
}
public void ParseSimpleConditionWithNumbers()
{
Lexer lexer = new Lexer("30 < 36");
Assert.IsTrue(IsInteger("30", lexer.NextToken()));
Assert.IsTrue(IsOperator("<", lexer.NextToken()));
Assert.IsTrue(IsInteger("36", lexer.NextToken()));
Assert.IsNull(lexer.NextToken());
}
public void ParseSimpleCondition()
{
Lexer lexer = new Lexer("Temperature > 36");
Assert.IsTrue(IsName("Temperature", lexer.NextToken()));
Assert.IsTrue(IsOperator(">", lexer.NextToken()));
Assert.IsTrue(IsInteger("36", lexer.NextToken()));
Assert.IsNull(lexer.NextToken());
}
public void ParseBooleans()
{
Lexer lexer = new Lexer("true false");
Assert.IsTrue(IsBoolean("true", lexer.NextToken()));
Assert.IsTrue(IsBoolean("false", lexer.NextToken()));
Assert.IsNull(lexer.NextToken());
}
public void GetSimpleString()
{
Lexer lexer = new Lexer("\"foo\"");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual("foo", token.Value);
Assert.AreEqual(TokenType.String, token.Type);
Assert.IsNull(lexer.NextToken());
}
public void GetPeriodAsSeparator()
{
Lexer lexer = new Lexer(".");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(".", token.Value);
Assert.AreEqual(TokenType.Separator, token.Type);
Assert.IsNull(lexer.NextToken());
}
public void GetNameWithUnderscore()
{
Lexer lexer = new Lexer("is_not");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual("is_not", token.Value);
Assert.AreEqual(TokenType.Name, token.Type);
Assert.IsNull(lexer.NextToken());
}
public Parser(Lexer lexer)
{
this.lexer = lexer;
}