wasmparser 0.35.3

/* Copyright 2017 Mozilla Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#[cfg(feature = "std")]
#[cfg(test)]
mod simple_tests {
    use crate::operators_validator::OperatorValidatorConfig;
    use crate::parser::{Parser, ParserInput, ParserState, WasmDecoder};
    use crate::primitives::{Operator, SectionCode};
    use crate::validator::{ValidatingParser, ValidatingParserConfig};
    use std::fs::{read_dir, File};
    use std::io::prelude::*;
    use std::path::PathBuf;

    const VALIDATOR_CONFIG: Option<ValidatingParserConfig> = Some(ValidatingParserConfig {
        operator_config: OperatorValidatorConfig {
            enable_threads: true,
            enable_reference_types: true,
            enable_simd: true,
            enable_bulk_memory: true,
            enable_multi_value: true,
        },
        mutable_global_imports: true,
    });

    fn read_file_data(path: &PathBuf) -> Vec<u8> {
        println!("Parsing {:?}", path);
        let mut data = Vec::new();
        let mut f = File::open(path).ok().unwrap();
        f.read_to_end(&mut data).unwrap();
        data
    }

    #[test]
    fn it_works() {
        for entry in read_dir("tests").unwrap() {
            let dir = entry.unwrap();
            if !dir.file_type().unwrap().is_file() {
                continue;
            }
            let data = read_file_data(&dir.path());
            let mut parser = Parser::new(data.as_slice());
            let mut max_iteration = 100000000;
            loop {
                let state = parser.read();
                match *state {
                    ParserState::EndWasm => break,
                    ParserState::Error(err) => panic!("Error: {:?}", err),
                    _ => (),
                }
                max_iteration -= 1;
                if max_iteration == 0 {
                    panic!("Max iterations exceeded");
                }
            }
        }
    }

    #[test]
    fn validator_not_fails() {
        for entry in read_dir("tests").unwrap() {
            let dir = entry.unwrap();
            if !dir.file_type().unwrap().is_file() {
                continue;
            }
            let data = read_file_data(&dir.path());
            let mut parser = ValidatingParser::new(data.as_slice(), VALIDATOR_CONFIG);
            let mut max_iteration = 100000000;
            loop {
                let state = parser.read();
                match *state {
                    ParserState::EndWasm => break,
                    ParserState::Error(err) => panic!("Error: {:?}", err),
                    _ => (),
                }
                max_iteration -= 1;
                if max_iteration == 0 {
                    panic!("Max iterations exceeded");
                }
            }
        }
    }

    #[test]
    fn validator_fails() {
        for entry in read_dir("tests/invalid").unwrap() {
            let dir = entry.unwrap();
            if !dir.file_type().unwrap().is_file() {
                continue;
            }
            let data = read_file_data(&dir.path());
            let mut parser = ValidatingParser::new(data.as_slice(), VALIDATOR_CONFIG);
            let mut max_iteration = 100000000;
            let mut error = false;
            loop {
                let state = parser.read();
                if let ParserState::Error(_) = *state {
                    error = true;
                    break;
                }
                if let ParserState::EndWasm = *state {
                    break;
                }
                max_iteration -= 1;
                if max_iteration == 0 {
                    panic!("Max iterations exceeded");
                }
            }
            if !error {
                panic!("fail is expected");
            }
        }
    }

    macro_rules! expect_state {
        ($state:expr, $expected:pat) => {{
            {
                let state: &ParserState = $state;
                match *state {
                    $expected => (),
                    _ => panic!("Unexpected state during testing: {:?}", state),
                }
            }
        }};
    }

    #[test]
    fn default_read() {
        let data = read_file_data(&PathBuf::from("tests/simple.wasm"));
        let mut parser = Parser::new(data.as_slice());

        expect_state!(parser.read(), ParserState::BeginWasm { .. });
        expect_state!(parser.read(), ParserState::BeginSection { code: SectionCode::Type, .. });
        expect_state!(parser.read(), ParserState::TypeSectionEntry(_));
        expect_state!(parser.read(), ParserState::EndSection);
        expect_state!(parser.read(), ParserState::BeginSection { code: SectionCode::Function, .. });
        expect_state!(parser.read(), ParserState::FunctionSectionEntry(_));
        expect_state!(parser.read(), ParserState::EndSection);
        expect_state!(parser.read(), ParserState::BeginSection { code: SectionCode::Code, .. });
        expect_state!(parser.read(), ParserState::BeginFunctionBody { .. });
        expect_state!(parser.read(), ParserState::FunctionBodyLocals { .. });
        expect_state!(parser.read(), ParserState::CodeOperator(_));
        expect_state!(parser.read(), ParserState::CodeOperator(Operator::End));
        expect_state!(parser.read(), ParserState::EndFunctionBody);
        expect_state!(parser.read(), ParserState::EndSection);
        expect_state!(parser.read(), ParserState::EndWasm);
    }

    #[test]
    fn default_read_with_input() {
        let data = read_file_data(&PathBuf::from("tests/simple.wasm"));
        let mut parser = Parser::new(data.as_slice());

        expect_state!(parser.read(), ParserState::BeginWasm { .. });
        expect_state!(parser.read_with_input(ParserInput::Default),
            ParserState::BeginSection { code: SectionCode::Type, .. });
        expect_state!(parser.read(), ParserState::TypeSectionEntry(_));
        expect_state!(parser.read(), ParserState::EndSection);
        expect_state!(parser.read(), ParserState::BeginSection { code: SectionCode::Function, ..});
        expect_state!(
            parser.read_with_input(ParserInput::ReadSectionRawData),
            ParserState::SectionRawData(_)
        );
        expect_state!(parser.read(), ParserState::EndSection);
        expect_state!(parser.read(), ParserState::BeginSection { code: SectionCode::Code, .. });
        expect_state!(parser.read(), ParserState::BeginFunctionBody { .. });
        expect_state!(
            parser.read_with_input(ParserInput::SkipFunctionBody),
            ParserState::EndSection
        );
        expect_state!(parser.read(), ParserState::EndWasm);
    }

    #[test]
    fn skipping() {
        let data = read_file_data(&PathBuf::from("tests/naming.wasm"));
        let mut parser = Parser::new(data.as_slice());

        expect_state!(parser.read(),
            ParserState::BeginWasm { .. });
        expect_state!(parser.read_with_input(ParserInput::Default),
            ParserState::BeginSection { code: SectionCode::Type, .. });
        expect_state!(parser.read_with_input(ParserInput::SkipSection),
            ParserState::BeginSection { code: SectionCode::Import, ..});
        expect_state!(parser.read_with_input(ParserInput::SkipSection),
            ParserState::BeginSection { code: SectionCode::Function, ..});
        expect_state!(parser.read_with_input(ParserInput::SkipSection),
            ParserState::BeginSection { code: SectionCode::Global, ..});
        expect_state!(parser.read_with_input(ParserInput::SkipSection),
            ParserState::BeginSection { code: SectionCode::Export, ..});
        expect_state!(parser.read_with_input(ParserInput::SkipSection),
            ParserState::BeginSection { code: SectionCode::Element, ..});
        expect_state!(parser.read_with_input(ParserInput::SkipSection),
            ParserState::BeginSection { code: SectionCode::Code, .. });
        expect_state!(parser.read(),
            ParserState::BeginFunctionBody { .. });
        expect_state!(parser.read_with_input(ParserInput::SkipFunctionBody),
            ParserState::BeginFunctionBody { .. });
        expect_state!(parser.read_with_input(ParserInput::SkipFunctionBody),
            ParserState::BeginFunctionBody { .. });
        expect_state!(parser.read_with_input(ParserInput::SkipFunctionBody),
            ParserState::BeginFunctionBody { .. });
        expect_state!(parser.read_with_input(ParserInput::SkipFunctionBody),
            ParserState::BeginFunctionBody { .. });
        expect_state!(parser.read_with_input(ParserInput::SkipFunctionBody),
            ParserState::BeginFunctionBody { .. });
        expect_state!(parser.read_with_input(ParserInput::SkipFunctionBody),
            ParserState::BeginFunctionBody { .. });
        expect_state!(
            parser.read_with_input(ParserInput::SkipFunctionBody),
            ParserState::EndSection
        );
        expect_state!(parser.read(),
            ParserState::BeginSection { code: SectionCode::Custom { .. }, ..});
        expect_state!(parser.read_with_input(ParserInput::SkipSection),
            ParserState::BeginSection { code: SectionCode::Custom { .. }, .. });
        expect_state!(
            parser.read_with_input(ParserInput::SkipSection),
            ParserState::EndWasm
        );
    }
}