public void LetStatementsTest()
{
const string input = @"let x = 5;
let y = 10;
let foo = 123456789; ";
var lexer = new Lexer(input);
var parser = new Parser(lexer);
var program = parser.ParseCode();
StaticTests.CheckParserErrors(parser);
Assert.IsNotNull(program, "ParseProgram returned null");
Assert.AreEqual(program.Statements.Count, 3,
$"program.Statements does not contain 3 statements, got={program.Statements.Count}");
var tests = new Identifier[]
{
new() { Value = "x" },
new() { Value = "y" },
new() { Value = "foo" }
};
for (var i = 0; i < tests.Length; i++)
{
var stmt = program.Statements[i];
var tt = tests[i];
StaticTests.TestLetStatement(stmt as LetStatement, tt.Value);
}
}
public void LetStatementsTest1()
{
var tests = new[]
{
new LetStatementTestCases {
Input = "let x = 5;", ExpectedIdentifier = "x"
}.ExpectedValueSet(5),
new LetStatementTestCases {
Input = "let y = true;", ExpectedIdentifier = "y"
}
.ExpectedValueSet(true),
new LetStatementTestCases {
Input = "let foo = y;", ExpectedIdentifier = "foo"
}
.ExpectedValueSet("y")
};
foreach (var letStatementTestCases in tests)
{
var lexer = new Lexer(letStatementTestCases.Input);
var parser = new Parser(lexer);
var program = parser.ParseCode();
StaticTests.CheckParserErrors(parser);
Assert.AreEqual(1, program.Statements.Count);
var stmt = program.Statements.First() as LetStatement;
StaticTests.TestLetStatement(stmt, letStatementTestCases.ExpectedIdentifier);
var value = stmt.Value;
StaticTests.TestLiteralExpression(value, letStatementTestCases.ExpectedValueGet());
}
}