public void ShouldNotParseWithoutCases()
{
// Arrange
var grammar = new CicodeGrammar();
var parser = new Parser(grammar);
var sourceCode =
@"
FUNCTION A()
SELECT CASE a
END SELECT
END
";
// Act
var parseTree = parser.Parse(sourceCode);
// Assert
Assert.IsNotNull(parseTree);
Assert.IsTrue(parseTree.HasErrors());
// A parser error is expected at the end of line 4 because the expected list of cases which is missing
Assert.AreEqual <int>(1, parseTree.ParserMessages
.Where(m => m.Location.Line == 4)
.Where(m => m.ParserState.ExpectedTerminals.First().Name == "CASE")
.Count());
}
public void ShouldNotParseWithoutCases()
{
// Arrange
var grammar = new CicodeGrammar();
var parser = new Parser(grammar);
var sourceCode =
@"
FUNCTION A()
SELECT CASE a
END SELECT
END
";
// Act
var parseTree = parser.Parse(sourceCode);
// Assert
Assert.IsNotNull(parseTree);
Assert.IsTrue(parseTree.HasErrors());
// A parser error is expected at the end of line 4 because the expected list of cases which is missing
Assert.AreEqual<int>(1, parseTree.ParserMessages
.Where(m => m.Location.Line == 4)
.Where(m => m.ParserState.ExpectedTerminals.First().Name == "CASE")
.Count());
}
public void ShouldNotParseCaseElseWhenNotAtTheEnd()
{
// Arrange
var grammar = new CicodeGrammar();
var parser = new Parser(grammar);
var sourceCode =
@"
FUNCTION A()
SELECT CASE a
CASE 1
A();
CASE ELSE
A();
CASE 1
A();
END SELECT
END
";
// Act
var parseTree = parser.Parse(sourceCode);
// Assert
Assert.IsNotNull(parseTree);
Assert.IsTrue(parseTree.HasErrors());
// A parser error is expected at line 7 because of the CASE ELSE clause which is not at then end of the case list
Assert.AreEqual <int>(1, parseTree.ParserMessages.Where(m => m.Location.Line == 7).Count());
}
public void ShouldNotParseCaseElseWhenNotAtTheEnd()
{
// Arrange
var grammar = new CicodeGrammar();
var parser = new Parser(grammar);
var sourceCode =
@"
FUNCTION A()
SELECT CASE a
CASE 1
A();
CASE ELSE
A();
CASE 1
A();
END SELECT
END
";
// Act
var parseTree = parser.Parse(sourceCode);
// Assert
Assert.IsNotNull(parseTree);
Assert.IsTrue(parseTree.HasErrors());
// A parser error is expected at line 7 because of the CASE ELSE clause which is not at then end of the case list
Assert.AreEqual<int>(1, parseTree.ParserMessages.Where(m => m.Location.Line == 7).Count());
}
protected void ParseAndAssertNoErrors(string sourceCode)
{
var grammar = new CicodeGrammar();
var parser = new Parser(grammar);
var parseTree = parser.Parse(sourceCode);
Assert.IsNotNull(parseTree);
Assert.IsFalse(parseTree.HasErrors(), GetParserMessages(parseTree));
}
/// <summary>
/// Load sample program from resources, run it and check its output
/// </summary>
protected void ParseResourceAndAssertNoErrors(string programResourceName)
{
var grammar = new CicodeGrammar();
var parser = new Parser(grammar);
var parseTree = parser.Parse(LoadResourceText(programResourceName));
Assert.IsNotNull(parseTree);
Assert.IsFalse(parseTree.HasErrors(), GetParserMessages(parseTree));
}
/// <summary>
/// Load sample program from resources, run it and check its output
/// </summary>
protected void ParseResourceAndAssertNoErrors(string programResourceName)
{
var grammar = new CicodeGrammar();
var parser = new Parser(grammar);
var parseTree = parser.Parse(LoadResourceText(programResourceName));
Assert.IsNotNull(parseTree);
Assert.IsFalse(parseTree.HasErrors(), GetParserMessages(parseTree));
}
protected void ParseAndAssertNoErrors(string sourceCode)
{
var grammar = new CicodeGrammar();
var parser = new Parser(grammar);
var parseTree = parser.Parse(sourceCode);
Assert.IsNotNull(parseTree);
Assert.IsFalse(parseTree.HasErrors(), GetParserMessages(parseTree));
}
/// <summary>
/// Load sample program from resources, run it and check its output
/// </summary>
void RunSampleAndCompareResults(string programResourceName, string outputResourceName)
{
var grammar = new CicodeGrammar();
var parser = new Parser(grammar);
var parseTree = parser.Parse(LoadResourceText(programResourceName));
Assert.IsNotNull(parseTree);
Assert.IsFalse(parseTree.HasErrors());
string result = ""; //grammar.RunSample(new RunSampleArgs(parser.Language, null, parseTree));
Assert.IsNotNull(result);
Assert.AreEqual(LoadResourceText(outputResourceName), result);
}
/// <summary>
/// Load sample program from resources, run it and check its output
/// </summary>
void RunSampleAndCompareResults(string programResourceName, string outputResourceName)
{
var grammar = new CicodeGrammar();
var parser = new Parser(grammar);
var parseTree = parser.Parse(LoadResourceText(programResourceName));
Assert.IsNotNull(parseTree);
Assert.IsFalse(parseTree.HasErrors());
string result = ""; //grammar.RunSample(new RunSampleArgs(parser.Language, null, parseTree));
Assert.IsNotNull(result);
Assert.AreEqual(LoadResourceText(outputResourceName), result);
}
