400 lines
15 KiB
Rust
400 lines
15 KiB
Rust
use super::helpers::allocations;
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use super::helpers::edits::{get_random_edit, invert_edit};
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use super::helpers::fixtures::{fixtures_dir, get_language, get_test_language};
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use super::helpers::random::Rand;
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use super::helpers::scope_sequence::ScopeSequence;
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use crate::generate;
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use crate::parse::perform_edit;
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use crate::test::{parse_tests, print_diff, print_diff_key, strip_sexp_fields, TestEntry};
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use crate::util;
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use lazy_static::lazy_static;
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use std::{env, fs, time, usize};
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use tree_sitter::{LogType, Node, Parser, Tree};
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const EDIT_COUNT: usize = 3;
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const TRIAL_COUNT: usize = 10;
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const LANGUAGES: &'static [&'static str] = &[
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"bash",
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"c",
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"cpp",
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"embedded-template",
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"go",
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"html",
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"javascript",
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"json",
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"python",
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];
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lazy_static! {
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static ref LOG_ENABLED: bool = env::var("TREE_SITTER_TEST_ENABLE_LOG").is_ok();
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static ref LOG_GRAPH_ENABLED: bool = env::var("TREE_SITTER_TEST_ENABLE_LOG_GRAPHS").is_ok();
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static ref LANGUAGE_FILTER: Option<String> = env::var("TREE_SITTER_TEST_LANGUAGE_FILTER").ok();
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static ref EXAMPLE_FILTER: Option<String> = env::var("TREE_SITTER_TEST_EXAMPLE_FILTER").ok();
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static ref TRIAL_FILTER: Option<usize> = env::var("TREE_SITTER_TEST_TRIAL_FILTER")
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.map(|s| usize::from_str_radix(&s, 10).unwrap())
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.ok();
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pub static ref SEED: usize = env::var("TREE_SITTER_TEST_SEED")
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.map(|s| usize::from_str_radix(&s, 10).unwrap())
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.unwrap_or(
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time::SystemTime::now()
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.duration_since(time::UNIX_EPOCH)
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.unwrap()
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.as_secs() as usize,
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);
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}
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#[test]
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fn test_real_language_corpus_files() {
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eprintln!("\n\nRandom seed: {}\n", *SEED);
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let grammars_dir = fixtures_dir().join("grammars");
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let error_corpus_dir = fixtures_dir().join("error_corpus");
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let mut failure_count = 0;
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for language_name in LANGUAGES.iter().cloned() {
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if let Some(filter) = LANGUAGE_FILTER.as_ref() {
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if language_name != filter.as_str() {
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continue;
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}
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}
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let language = get_language(language_name);
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let corpus_dir = grammars_dir.join(language_name).join("corpus");
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let error_corpus_file = error_corpus_dir.join(&format!("{}_errors.txt", language_name));
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let main_tests = parse_tests(&corpus_dir).unwrap();
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let error_tests = parse_tests(&error_corpus_file).unwrap_or(TestEntry::default());
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let mut tests = flatten_tests(main_tests);
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tests.extend(flatten_tests(error_tests));
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if !tests.is_empty() {
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eprintln!("language: {:?}", language_name);
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}
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for (example_name, input, expected_output, has_fields) in tests {
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eprintln!(" example: {:?}", example_name);
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if TRIAL_FILTER.map_or(true, |t| t == 0) {
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allocations::start_recording();
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let mut log_session = None;
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let mut parser = get_parser(&mut log_session, "log.html");
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parser.set_language(language).unwrap();
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let tree = parser.parse(&input, None).unwrap();
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let mut actual_output = tree.root_node().to_sexp();
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if !has_fields {
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actual_output = strip_sexp_fields(actual_output);
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}
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drop(tree);
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drop(parser);
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if actual_output != expected_output {
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print_diff_key();
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print_diff(&actual_output, &expected_output);
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println!("");
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failure_count += 1;
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continue;
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}
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allocations::stop_recording();
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}
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let mut parser = Parser::new();
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parser.set_language(language).unwrap();
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let tree = parser.parse(&input, None).unwrap();
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drop(parser);
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for trial in 1..=TRIAL_COUNT {
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if TRIAL_FILTER.map_or(true, |filter| filter == trial) {
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let mut rand = Rand::new(*SEED + trial);
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allocations::start_recording();
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let mut log_session = None;
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let mut parser = get_parser(&mut log_session, "log.html");
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parser.set_language(language).unwrap();
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let mut tree = tree.clone();
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let mut input = input.clone();
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if *LOG_GRAPH_ENABLED {
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eprintln!("{}\n", String::from_utf8_lossy(&input));
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}
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// Perform a random series of edits and reparse.
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let mut undo_stack = Vec::new();
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for _ in 0..EDIT_COUNT {
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let edit = get_random_edit(&mut rand, &input);
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undo_stack.push(invert_edit(&input, &edit));
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perform_edit(&mut tree, &mut input, &edit);
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}
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if *LOG_GRAPH_ENABLED {
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eprintln!("{}\n", String::from_utf8_lossy(&input));
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}
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let mut tree2 = parser.parse(&input, Some(&tree)).unwrap();
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// Check that the new tree is consistent.
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check_consistent_sizes(&tree2, &input);
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if let Err(message) = check_changed_ranges(&tree, &tree2, &input) {
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println!(
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"\nUnexpected scope change in trial {}\n{}\n\n",
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trial, message
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);
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failure_count += 1;
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break;
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}
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// Undo all of the edits and re-parse again.
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while let Some(edit) = undo_stack.pop() {
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perform_edit(&mut tree2, &mut input, &edit);
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}
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if *LOG_GRAPH_ENABLED {
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eprintln!("{}\n", String::from_utf8_lossy(&input));
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}
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let tree3 = parser.parse(&input, Some(&tree2)).unwrap();
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// Verify that the final tree matches the expectation from the corpus.
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let mut actual_output = tree3.root_node().to_sexp();
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if !has_fields {
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actual_output = strip_sexp_fields(actual_output);
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}
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if actual_output != expected_output {
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println!(
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"Incorrect parse for {} - {} - trial {}",
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language_name, example_name, trial
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);
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print_diff_key();
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print_diff(&actual_output, &expected_output);
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println!("");
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failure_count += 1;
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break;
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}
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// Check that the edited tree is consistent.
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check_consistent_sizes(&tree3, &input);
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if let Err(message) = check_changed_ranges(&tree2, &tree3, &input) {
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eprintln!(
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"Unexpected scope change in trial {}\n{}\n\n",
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trial, message
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);
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failure_count += 1;
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break;
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}
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drop(tree);
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drop(tree2);
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drop(tree3);
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drop(parser);
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allocations::stop_recording();
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}
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}
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}
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}
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if failure_count > 0 {
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panic!("{} corpus tests failed", failure_count);
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}
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}
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#[test]
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fn test_feature_corpus_files() {
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let test_grammars_dir = fixtures_dir().join("test_grammars");
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let mut failure_count = 0;
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for entry in fs::read_dir(&test_grammars_dir).unwrap() {
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let entry = entry.unwrap();
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if !entry.metadata().unwrap().is_dir() {
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continue;
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}
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let language_name = entry.file_name();
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let language_name = language_name.to_str().unwrap();
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if let Some(filter) = LANGUAGE_FILTER.as_ref() {
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if language_name != filter.as_str() {
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continue;
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}
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}
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let test_path = entry.path();
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let grammar_path = test_path.join("grammar.json");
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let error_message_path = test_path.join("expected_error.txt");
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let grammar_json = fs::read_to_string(grammar_path).unwrap();
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let generate_result = generate::generate_parser_for_grammar(&grammar_json);
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if error_message_path.exists() {
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if EXAMPLE_FILTER.is_some() {
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continue;
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}
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eprintln!("test language: {:?}", language_name);
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let expected_message = fs::read_to_string(&error_message_path).unwrap();
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if let Err(e) = generate_result {
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if e.message() != expected_message {
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eprintln!(
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"Unexpected error message.\n\nExpected:\n\n{}\nActual:\n\n{}\n",
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expected_message,
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e.message()
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);
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failure_count += 1;
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}
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} else {
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eprintln!(
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"Expected error message but got none for test grammar '{}'",
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language_name
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);
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failure_count += 1;
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}
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} else {
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let corpus_path = test_path.join("corpus.txt");
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let c_code = generate_result.unwrap().1;
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let language = get_test_language(language_name, &c_code, Some(&test_path));
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let test = parse_tests(&corpus_path).unwrap();
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let tests = flatten_tests(test);
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if !tests.is_empty() {
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eprintln!("test language: {:?}", language_name);
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}
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for (name, input, expected_output, has_fields) in tests {
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eprintln!(" example: {:?}", name);
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allocations::start_recording();
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let mut log_session = None;
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let mut parser = get_parser(&mut log_session, "log.html");
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parser.set_language(language).unwrap();
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let tree = parser.parse(&input, None).unwrap();
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let mut actual_output = tree.root_node().to_sexp();
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if !has_fields {
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actual_output = strip_sexp_fields(actual_output);
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}
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drop(tree);
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drop(parser);
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if actual_output != expected_output {
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print_diff_key();
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print_diff(&actual_output, &expected_output);
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println!("");
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failure_count += 1;
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continue;
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}
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allocations::stop_recording();
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}
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}
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}
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if failure_count > 0 {
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panic!("{} corpus tests failed", failure_count);
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}
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}
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fn check_consistent_sizes(tree: &Tree, input: &Vec<u8>) {
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fn check(node: Node, line_offsets: &Vec<usize>) {
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let start_byte = node.start_byte();
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let end_byte = node.end_byte();
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let start_point = node.start_position();
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let end_point = node.end_position();
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assert!(start_byte <= end_byte);
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assert!(start_point <= end_point);
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assert_eq!(
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start_byte,
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line_offsets[start_point.row] + start_point.column
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);
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assert_eq!(end_byte, line_offsets[end_point.row] + end_point.column);
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let mut last_child_end_byte = start_byte;
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let mut last_child_end_point = start_point;
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let mut some_child_has_changes = false;
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let mut actual_named_child_count = 0;
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for i in 0..node.child_count() {
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let child = node.child(i).unwrap();
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assert!(child.start_byte() >= last_child_end_byte);
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assert!(child.start_position() >= last_child_end_point);
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check(child, line_offsets);
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if child.has_changes() {
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some_child_has_changes = true;
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}
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if child.is_named() {
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actual_named_child_count += 1;
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}
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last_child_end_byte = child.end_byte();
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last_child_end_point = child.end_position();
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}
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assert_eq!(actual_named_child_count, node.named_child_count());
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if node.child_count() > 0 {
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assert!(end_byte >= last_child_end_byte);
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assert!(end_point >= last_child_end_point);
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}
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if some_child_has_changes {
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assert!(node.has_changes());
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}
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}
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let mut line_offsets = vec![0];
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for (i, c) in input.iter().enumerate() {
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if *c == '\n' as u8 {
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line_offsets.push(i + 1);
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}
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}
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check(tree.root_node(), &line_offsets);
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}
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fn check_changed_ranges(old_tree: &Tree, new_tree: &Tree, input: &Vec<u8>) -> Result<(), String> {
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let changed_ranges = old_tree.changed_ranges(new_tree).collect();
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let old_scope_sequence = ScopeSequence::new(old_tree);
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let new_scope_sequence = ScopeSequence::new(new_tree);
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old_scope_sequence.check_changes(&new_scope_sequence, &input, &changed_ranges)
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}
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fn get_parser(session: &mut Option<util::LogSession>, log_filename: &str) -> Parser {
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let mut parser = Parser::new();
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if *LOG_ENABLED {
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parser.set_logger(Some(Box::new(|log_type, msg| {
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if log_type == LogType::Lex {
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eprintln!(" {}", msg);
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} else {
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eprintln!("{}", msg);
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}
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})));
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} else if *LOG_GRAPH_ENABLED {
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*session = Some(util::log_graphs(&mut parser, log_filename).unwrap());
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}
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parser
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}
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fn flatten_tests(test: TestEntry) -> Vec<(String, Vec<u8>, String, bool)> {
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fn helper(test: TestEntry, prefix: &str, result: &mut Vec<(String, Vec<u8>, String, bool)>) {
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match test {
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TestEntry::Example {
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mut name,
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input,
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output,
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has_fields,
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} => {
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if !prefix.is_empty() {
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name.insert_str(0, " - ");
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name.insert_str(0, prefix);
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}
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if let Some(filter) = EXAMPLE_FILTER.as_ref() {
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if !name.contains(filter.as_str()) {
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return;
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}
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}
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result.push((name, input, output, has_fields));
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}
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TestEntry::Group { mut name, children } => {
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if !prefix.is_empty() {
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name.insert_str(0, " - ");
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name.insert_str(0, prefix);
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}
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for child in children {
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helper(child, &name, result);
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}
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}
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}
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}
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let mut result = Vec::new();
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helper(test, "", &mut result);
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result
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}
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