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TextParserTests.cs
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using NFluent;
using System.Linq.Dynamic.Core.Exceptions;
using System.Linq.Dynamic.Core.Tokenizer;
using Xunit;
namespace System.Linq.Dynamic.Core.Tests.Tokenizer
{
public class TextParserTests
{
[Fact]
public void TextParser_Parse_Bar()
{
// Assign + Act
var textParser = new TextParser(" | ");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.Bar);
Check.That(textParser.CurrentToken.Pos).Equals(1);
Check.That(textParser.CurrentToken.Text).Equals("|");
}
[Fact]
public void TextParser_Parse_Colon()
{
// Assign + Act
var textParser = new TextParser(" : ");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.Colon);
Check.That(textParser.CurrentToken.Pos).Equals(1);
Check.That(textParser.CurrentToken.Text).Equals(":");
}
[Fact]
public void TextParser_Parse_Exclamation()
{
// Assign + Act
var textParser = new TextParser(" !x");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.Exclamation);
Check.That(textParser.CurrentToken.Pos).Equals(1);
Check.That(textParser.CurrentToken.Text).Equals("!");
}
[Fact]
public void TextParser_Parse_ExclamationEqual()
{
// Assign + Act
var textParser = new TextParser(" != 1");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.ExclamationEqual);
Check.That(textParser.CurrentToken.Pos).Equals(1);
Check.That(textParser.CurrentToken.Text).Equals("!=");
}
[Fact]
public void TextParser_Parse_GreaterThanEqual()
{
// Assign + Act
var textParser = new TextParser(" >= ");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.GreaterThanEqual);
Check.That(textParser.CurrentToken.Pos).Equals(1);
Check.That(textParser.CurrentToken.Text).Equals(">=");
}
[Fact]
public void TextParser_Parse_HexadecimalIntegerLiteral()
{
// Assign + Act
var textParser = new TextParser(" 0x1234567890AbCdEfL ");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.IntegerLiteral);
Check.That(textParser.CurrentToken.Pos).Equals(1);
Check.That(textParser.CurrentToken.Text).Equals("0x1234567890AbCdEfL");
Check.ThatCode(() => new TextParser("0xz1234")).Throws<ParseException>();
}
[Fact]
public void TextParser_Parse_LessGreater()
{
// Assign + Act
var textParser = new TextParser(" <> ");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.LessGreater);
Check.That(textParser.CurrentToken.Pos).Equals(1);
Check.That(textParser.CurrentToken.Text).Equals("<>");
}
[Fact]
public void TextParser_Parse_NullPropagation()
{
// Assign + Act
var textParser = new TextParser(" ?. ");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.NullPropagation);
Check.That(textParser.CurrentToken.Pos).Equals(1);
Check.That(textParser.CurrentToken.Text).Equals("?.");
}
[Fact]
public void TextParser_Parse_RealLiteral()
{
// Assign + Act
var textParser = new TextParser(" 1.0E25 ");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.RealLiteral);
Check.That(textParser.CurrentToken.Pos).Equals(1);
Check.That(textParser.CurrentToken.Text).Equals("1.0E25");
Check.ThatCode(() => new TextParser("1.e25")).Throws<ParseException>();
}
[Fact]
public void TextParser_Parse_RealLiteralDecimalQualifier()
{
// Assign + Act
var textParser = new TextParser(" 12.5m ");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.RealLiteral);
Check.That(textParser.CurrentToken.Pos).Equals(1);
Check.That(textParser.CurrentToken.Text).Equals("12.5m");
}
[Fact]
public void TextParser_Parse_RealLiteralFloatQualifier()
{
// Assign + Act
var textParser = new TextParser(" 12.5f ");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.RealLiteral);
Check.That(textParser.CurrentToken.Pos).Equals(1);
Check.That(textParser.CurrentToken.Text).Equals("12.5f");
}
[Fact]
public void TextParser_Parse_RealLiteralMinus()
{
// Assign + Act
var textParser = new TextParser(" 1.0E-25 ");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.RealLiteral);
Check.That(textParser.CurrentToken.Pos).Equals(1);
Check.That(textParser.CurrentToken.Text).Equals("1.0E-25");
}
[Fact]
public void TextParser_Parse_RealLiteralPlus()
{
// Assign + Act
var textParser = new TextParser(" 1.0E+25 ");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.RealLiteral);
Check.That(textParser.CurrentToken.Pos).Equals(1);
Check.That(textParser.CurrentToken.Text).Equals("1.0E+25");
}
[Fact]
public void TextParser_Parse_Percent()
{
// Assign + Act
var textParser = new TextParser(" % ");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.Percent);
Check.That(textParser.CurrentToken.Pos).Equals(1);
Check.That(textParser.CurrentToken.Text).Equals("%");
}
[Fact]
public void TextParser_Parse_Slash()
{
// Assign + Act
var textParser = new TextParser(" / ");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.Slash);
Check.That(textParser.CurrentToken.Pos).Equals(1);
Check.That(textParser.CurrentToken.Text).Equals("/");
}
[Fact]
public void TextParser_Parse_StringLiteral_WithSingleQuotes_Backslash()
{
// Assign + Act
var textParser = new TextParser("'\\'");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.StringLiteral);
Check.That(textParser.CurrentToken.Pos).Equals(0);
Check.That(textParser.CurrentToken.Text[1]).Equals('\\');
}
[Fact]
public void TextParser_Parse_StringLiteral_WithSingleQuotes_DoubleQuote()
{
// Assign + Act
var textParser = new TextParser("'\"'");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.StringLiteral);
Check.That(textParser.CurrentToken.Pos).Equals(0);
Check.That(textParser.CurrentToken.Text[1]).Equals('"');
}
[Fact]
public void TextParser_Parse_StringLiteral_WithSingleQuotes_SingleQuote()
{
// Assign + Act
var textParser = new TextParser("'\''");
// Assert
Check.That(textParser.CurrentToken.Id).Equals(TokenId.StringLiteral);
Check.That(textParser.CurrentToken.Pos).Equals(0);
Check.That(textParser.CurrentToken.Text[1]).Equals('\'');
}
[Fact]
public void TextParser_Parse_ThrowsException()
{
// Assign + Act + Assert
//Check.ThatCode(() => { new TextParser("ಬಾ"); }).Throws<ParseException>();
Check.ThatCode(() => { new TextParser(";"); }).Throws<ParseException>();
}
}
}