leo/symbol-table/tests/mod.rs

120 lines
3.5 KiB
Rust

// Copyright (C) 2019-2020 Aleo Systems Inc.
// This file is part of the Leo library.
// The Leo library is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// The Leo library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
pub mod symbol_table;
use leo_ast::{Ast, Input};
use leo_grammar::Grammar;
use leo_symbol_table::{SymbolTable, SymbolTableError};
use leo_imports::ImportParser;
use std::path::PathBuf;
const TEST_PROGRAM_PATH: &str = "";
/// A helper struct to test a `SymbolTable`.
pub struct TestSymbolTable {
ast: Ast,
}
impl TestSymbolTable {
///
/// Returns a Leo syntax tree given a Leo program.
///
pub fn new(program_string: &str) -> Self {
// Get test file path.
let file_path = PathBuf::from(TEST_PROGRAM_PATH);
// Get parser syntax tree.
let grammar = Grammar::new(&file_path, program_string).unwrap();
// Get Leo syntax tree.
let ast = Ast::new(TEST_PROGRAM_PATH, &grammar);
Self { ast }
}
///
/// Parse the Leo syntax tree into a symbol table.
///
/// Expect no errors during parsing.
///
pub fn expect_success(self) {
// Get program.
let program = self.ast.into_repr();
// Create empty import parser.
let import_parser = ImportParser::default();
// Create empty input.
let input = Input::new();
// Create new symbol table.
let _symbol_table = SymbolTable::new(&program, &import_parser, &input).unwrap();
}
///
/// Parse the Leo syntax tree into a symbol table.
///
/// Expect an error involving entries in the symbol table.
///
pub fn expect_pass_one_error(self) {
// Get program.
let program = self.ast.into_repr();
// Create new symbol table.
let static_check = &mut SymbolTable::default();
// Create empty import parser.
let import_parser = ImportParser::default();
// Run pass one and expect an error.
let error = static_check.check_names(&program, &import_parser).unwrap_err();
match error {
SymbolTableError::Error(_) => {} // Ok
error => panic!("Expected a symbol table error found `{}`", error),
}
}
///
/// Parse the Leo syntax tree into a symbol table.
///
/// Expect an error involving types in the symbol table.
///
pub fn expect_pass_two_error(self) {
// Get program.
let program = self.ast.into_repr();
// Create a new symbol table.
let static_check = &mut SymbolTable::default();
// Create empty import parser.
let import_parser = ImportParser::default();
// Run the pass one and expect no errors.
static_check.check_names(&program, &import_parser).unwrap();
// Run the pass two and expect and error.
let error = static_check.check_types(&program).unwrap_err();
match error {
SymbolTableError::TypeError(_) => {} //Ok
error => panic!("Expected a type error found `{}`", error),
}
}
}