1 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
12 extern crate lazy_static;
16 extern crate rustfmt_nightly as rustfmt;
19 use std::collections::{HashMap, HashSet};
21 use std::io::{self, BufRead, BufReader, Read};
22 use std::iter::{Enumerate, Peekable};
23 use std::path::{Path, PathBuf};
26 use rustfmt::config::summary::Summary;
27 use rustfmt::config::{Color, Config, ReportTactic};
28 use rustfmt::filemap::write_system_newlines;
29 use rustfmt::rustfmt_diff::*;
32 const DIFF_CONTEXT_SIZE: usize = 3;
33 const CONFIGURATIONS_FILE_NAME: &str = "Configurations.md";
35 // Returns a `Vec` containing `PathBuf`s of files with a rs extension in the
36 // given path. The `recursive` argument controls if files from subdirectories
38 fn get_test_files(path: &Path, recursive: bool) -> Vec<PathBuf> {
39 let mut files = vec![];
41 for entry in fs::read_dir(path).expect(&format!(
42 "Couldn't read directory {}",
43 path.to_str().unwrap()
45 let entry = entry.expect("Couldn't get DirEntry");
46 let path = entry.path();
47 if path.is_dir() && recursive {
48 files.append(&mut get_test_files(&path, recursive));
49 } else if path.extension().map_or(false, |f| f == "rs") {
57 fn verify_config_used(path: &Path, config_name: &str) {
58 for entry in fs::read_dir(path).expect(&format!(
59 "Couldn't read {} directory",
60 path.to_str().unwrap()
62 let entry = entry.expect("Couldn't get directory entry");
63 let path = entry.path();
64 if path.extension().map_or(false, |f| f == "rs") {
65 // check if "// rustfmt-<config_name>:" appears in the file.
66 let filebuf = BufReader::new(
67 fs::File::open(&path).expect(&format!("Couldn't read file {}", path.display())),
73 .take_while(|l| l.starts_with("//"))
74 .any(|l| l.starts_with(&format!("// rustfmt-{}", config_name))),
76 "config option file {} does not contain expected config name",
85 fn verify_config_test_names() {
87 Path::new("tests/source/configs"),
88 Path::new("tests/target/configs"),
90 for entry in fs::read_dir(path).expect("Couldn't read configs directory") {
91 let entry = entry.expect("Couldn't get directory entry");
92 let path = entry.path();
94 let config_name = path.file_name().unwrap().to_str().unwrap();
96 // Make sure that config name is used in the files in the directory.
97 verify_config_used(&path, config_name);
103 // This writes to the terminal using the same approach (via term::stdout or
104 // println!) that is used by `rustfmt::rustfmt_diff::print_diff`. Writing
105 // using only one or the other will cause the output order to differ when
106 // `print_diff` selects the approach not used.
107 fn write_message(msg: &str) {
108 let mut writer = OutputWriter::new(Color::Auto);
109 writer.writeln(&format!("{}", msg), None);
112 // Integration tests. The files in the tests/source are formatted and compared
113 // to their equivalent in tests/target. The target file and config can be
114 // overridden by annotations in the source file. The input and output must match
118 // Get all files in the tests/source directory.
119 let files = get_test_files(Path::new("tests/source"), true);
120 let (_reports, count, fails) = check_files(files);
123 println!("Ran {} system tests.", count);
124 assert_eq!(fails, 0, "{} system tests failed", fails);
127 // Do the same for tests/coverage-source directory
128 // the only difference is the coverage mode
130 fn coverage_tests() {
131 let files = get_test_files(Path::new("tests/coverage/source"), true);
132 let (_reports, count, fails) = check_files(files);
134 println!("Ran {} tests in coverage mode.", count);
135 assert_eq!(fails, 0, "{} tests failed", fails);
139 fn checkstyle_test() {
140 let filename = "tests/writemode/source/fn-single-line.rs";
141 let expected_filename = "tests/writemode/target/checkstyle.xml";
142 assert_output(Path::new(filename), Path::new(expected_filename));
147 // Test "modified" output
148 let filename = "tests/writemode/source/modified.rs";
149 let result = get_modified_lines(Input::File(filename.into()), &Config::default()).unwrap();
151 result.modified_lines,
157 lines: vec!["fn blah() {}".into()],
162 lines: vec!["#[cfg(a, b)]".into(), "fn main() {}".into()],
169 // Helper function for comparing the results of rustfmt
170 // to a known output file generated by one of the write modes.
171 fn assert_output(source: &Path, expected_filename: &Path) {
172 let config = read_config(source);
173 let (_error_summary, file_map, _report) = format_file(source, &config);
175 // Populate output by writing to a vec.
176 let mut out = vec![];
177 let _ = filemap::write_all_files(&file_map, &mut out, &config);
178 let output = String::from_utf8(out).unwrap();
180 let mut expected_file = fs::File::open(&expected_filename).expect("Couldn't open target");
181 let mut expected_text = String::new();
183 .read_to_string(&mut expected_text)
184 .expect("Failed reading target");
186 let compare = make_diff(&expected_text, &output, DIFF_CONTEXT_SIZE);
187 if !compare.is_empty() {
188 let mut failures = HashMap::new();
189 failures.insert(source.to_owned(), compare);
190 print_mismatches_default_message(failures);
191 assert!(false, "Text does not match expected output");
195 // Idempotence tests. Files in tests/target are checked to be unaltered by
198 fn idempotence_tests() {
199 // Get all files in the tests/target directory.
200 let files = get_test_files(Path::new("tests/target"), true);
201 let (_reports, count, fails) = check_files(files);
204 println!("Ran {} idempotent tests.", count);
205 assert_eq!(fails, 0, "{} idempotent tests failed", fails);
208 // Run rustfmt on itself. This operation must be idempotent. We also check that
209 // no warnings are emitted.
212 let mut files = get_test_files(Path::new("tests"), false);
213 let bin_directories = vec!["cargo-fmt", "git-rustfmt", "bin", "format-diff"];
214 for dir in bin_directories {
215 let mut path = PathBuf::from("src");
217 path.push("main.rs");
220 files.push(PathBuf::from("src/lib.rs"));
222 let (reports, count, fails) = check_files(files);
223 let mut warnings = 0;
226 println!("Ran {} self tests.", count);
227 assert_eq!(fails, 0, "{} self tests failed", fails);
229 for format_report in reports {
230 println!("{}", format_report);
231 warnings += format_report.warning_count();
236 "Rustfmt's code generated {} warnings",
242 fn stdin_formatting_smoke_test() {
243 let input = Input::Text("fn main () {}".to_owned());
244 let config = Config::default();
245 let (error_summary, file_map, _report) =
246 format_input::<io::Stdout>(input, &config, None).unwrap();
247 assert!(error_summary.has_no_errors());
248 for &(ref file_name, ref text) in &file_map {
249 if let FileName::Custom(ref file_name) = *file_name {
250 if file_name == "stdin" {
251 assert_eq!(text.to_string(), "fn main() {}\n");
259 // FIXME(#1990) restore this test
261 // fn stdin_disable_all_formatting_test() {
262 // let input = String::from("fn main() { println!(\"This should not be formatted.\"); }");
263 // let mut child = Command::new("./target/debug/rustfmt")
264 // .stdin(Stdio::piped())
265 // .stdout(Stdio::piped())
266 // .arg("--config-path=./tests/config/disable_all_formatting.toml")
268 // .expect("failed to execute child");
271 // let stdin = child.stdin.as_mut().expect("failed to get stdin");
273 // .write_all(input.as_bytes())
274 // .expect("failed to write stdin");
276 // let output = child.wait_with_output().expect("failed to wait on child");
277 // assert!(output.status.success());
278 // assert!(output.stderr.is_empty());
279 // assert_eq!(input, String::from_utf8(output.stdout).unwrap());
283 fn format_lines_errors_are_reported() {
284 let long_identifier = String::from_utf8(vec![b'a'; 239]).unwrap();
285 let input = Input::Text(format!("fn {}() {{}}", long_identifier));
286 let config = Config::default();
287 let (error_summary, _file_map, _report) =
288 format_input::<io::Stdout>(input, &config, None).unwrap();
289 assert!(error_summary.has_formatting_errors());
293 fn format_lines_errors_are_reported_with_tabs() {
294 let long_identifier = String::from_utf8(vec![b'a'; 97]).unwrap();
295 let input = Input::Text(format!("fn a() {{\n\t{}\n}}", long_identifier));
296 let config = Config::from_toml("hard_tabs = true", Path::new("")).unwrap();
297 let (error_summary, _file_map, _report) =
298 format_input::<io::Stdout>(input, &config, None).unwrap();
299 assert!(error_summary.has_formatting_errors());
302 // For each file, run rustfmt and collect the output.
303 // Returns the number of files checked and the number of failures.
304 fn check_files(files: Vec<PathBuf>) -> (Vec<FormatReport>, u32, u32) {
307 let mut reports = vec![];
309 for file_name in files {
310 debug!("Testing '{}'...", file_name.display());
312 match idempotent_check(&file_name) {
313 Ok(ref report) if report.has_warnings() => {
314 print!("{}", report);
317 Ok(report) => reports.push(report),
319 if let IdempotentCheckError::Mismatch(msg) = err {
320 print_mismatches_default_message(msg);
329 (reports, count, fails)
332 fn print_mismatches_default_message(result: HashMap<PathBuf, Vec<Mismatch>>) {
333 for (file_name, diff) in result {
334 let mismatch_msg_formatter =
335 |line_num| format!("\nMismatch at {}:{}:", file_name.display(), line_num);
336 print_diff(diff, &mismatch_msg_formatter, Color::Auto);
339 if let Some(mut t) = term::stdout() {
340 t.reset().unwrap_or(());
344 fn print_mismatches<T: Fn(u32) -> String>(
345 result: HashMap<PathBuf, Vec<Mismatch>>,
346 mismatch_msg_formatter: T,
348 for (_file_name, diff) in result {
349 print_diff(diff, &mismatch_msg_formatter, Color::Auto);
352 if let Some(mut t) = term::stdout() {
353 t.reset().unwrap_or(());
357 fn read_config(filename: &Path) -> Config {
358 let sig_comments = read_significant_comments(filename);
359 // Look for a config file... If there is a 'config' property in the significant comments, use
360 // that. Otherwise, if there are no significant comments at all, look for a config file with
361 // the same name as the test file.
362 let mut config = if !sig_comments.is_empty() {
363 get_config(sig_comments.get("config").map(Path::new))
365 get_config(filename.with_extension("toml").file_name().map(Path::new))
368 for (key, val) in &sig_comments {
369 if key != "target" && key != "config" {
370 config.override_value(key, val);
374 // Don't generate warnings for to-do items.
375 config.set().report_todo(ReportTactic::Never);
380 fn format_file<P: Into<PathBuf>>(filepath: P, config: &Config) -> (Summary, FileMap, FormatReport) {
381 let filepath = filepath.into();
382 let input = Input::File(filepath);
383 format_input::<io::Stdout>(input, config, None).unwrap()
386 pub enum IdempotentCheckError {
387 Mismatch(HashMap<PathBuf, Vec<Mismatch>>),
391 pub fn idempotent_check(filename: &PathBuf) -> Result<FormatReport, IdempotentCheckError> {
392 let sig_comments = read_significant_comments(filename);
393 let config = read_config(filename);
394 let (error_summary, file_map, format_report) = format_file(filename, &config);
395 if error_summary.has_parsing_errors() {
396 return Err(IdempotentCheckError::Parse);
399 let mut write_result = HashMap::new();
400 for &(ref filename, ref text) in &file_map {
401 let mut v = Vec::new();
402 // Won't panic, as we're not doing any IO.
403 write_system_newlines(&mut v, text, &config).unwrap();
404 // Won't panic, we are writing correct utf8.
405 let one_result = String::from_utf8(v).unwrap();
406 if let FileName::Real(ref filename) = *filename {
407 write_result.insert(filename.to_owned(), one_result);
411 let target = sig_comments.get("target").map(|x| &(*x)[..]);
413 handle_result(write_result, target).map(|_| format_report)
416 // Reads test config file using the supplied (optional) file name. If there's no file name or the
417 // file doesn't exist, just return the default config. Otherwise, the file must be read
419 fn get_config(config_file: Option<&Path>) -> Config {
420 let config_file_name = match config_file {
421 None => return Default::default(),
423 let mut full_path = PathBuf::from("tests/config/");
424 full_path.push(file_name);
425 if !full_path.exists() {
426 return Default::default();
432 let mut def_config_file = fs::File::open(config_file_name).expect("Couldn't open config");
433 let mut def_config = String::new();
435 .read_to_string(&mut def_config)
436 .expect("Couldn't read config");
438 Config::from_toml(&def_config, Path::new("tests/config/")).expect("Invalid toml")
441 // Reads significant comments of the form: // rustfmt-key: value
443 fn read_significant_comments(file_name: &Path) -> HashMap<String, String> {
445 fs::File::open(file_name).expect(&format!("Couldn't read file {}", file_name.display()));
446 let reader = BufReader::new(file);
447 let pattern = r"^\s*//\s*rustfmt-([^:]+):\s*(\S+)";
448 let regex = regex::Regex::new(pattern).expect("Failed creating pattern 1");
450 // Matches lines containing significant comments or whitespace.
451 let line_regex = regex::Regex::new(r"(^\s*$)|(^\s*//\s*rustfmt-[^:]+:\s*\S+)")
452 .expect("Failed creating pattern 2");
456 .map(|line| line.expect("Failed getting line"))
457 .take_while(|line| line_regex.is_match(line))
459 regex.captures_iter(&line).next().map(|capture| {
463 .expect("Couldn't unwrap capture")
468 .expect("Couldn't unwrap capture")
477 // Compare output to input.
478 // TODO: needs a better name, more explanation.
480 result: HashMap<PathBuf, String>,
481 target: Option<&str>,
482 ) -> Result<(), IdempotentCheckError> {
483 let mut failures = HashMap::new();
485 for (file_name, fmt_text) in result {
486 // If file is in tests/source, compare to file with same name in tests/target.
487 let target = get_target(&file_name, target);
488 let open_error = format!("Couldn't open target {:?}", &target);
489 let mut f = fs::File::open(&target).expect(&open_error);
491 let mut text = String::new();
492 let read_error = format!("Failed reading target {:?}", &target);
493 f.read_to_string(&mut text).expect(&read_error);
495 // Ignore LF and CRLF difference for Windows.
496 if !string_eq_ignore_newline_repr(&fmt_text, &text) {
497 let diff = make_diff(&text, &fmt_text, DIFF_CONTEXT_SIZE);
500 "Empty diff? Maybe due to a missing a newline at the end of a file?"
502 failures.insert(file_name, diff);
506 if failures.is_empty() {
509 Err(IdempotentCheckError::Mismatch(failures))
513 // Map source file paths to their target paths.
514 fn get_target(file_name: &Path, target: Option<&str>) -> PathBuf {
515 if let Some(n) = file_name
517 .position(|c| c.as_os_str() == "source")
519 let mut target_file_name = PathBuf::new();
520 for (i, c) in file_name.components().enumerate() {
522 target_file_name.push("target");
524 target_file_name.push(c.as_os_str());
527 if let Some(replace_name) = target {
528 target_file_name.with_file_name(replace_name)
533 // This is either and idempotence check or a self check
539 fn rustfmt_diff_make_diff_tests() {
540 let diff = make_diff("a\nb\nc\nd", "a\ne\nc\nd", 3);
548 DiffLine::Context("a".into()),
549 DiffLine::Resulting("b".into()),
550 DiffLine::Expected("e".into()),
551 DiffLine::Context("c".into()),
552 DiffLine::Context("d".into()),
560 fn rustfmt_diff_no_diff_test() {
561 let diff = make_diff("a\nb\nc\nd", "a\nb\nc\nd", 3);
562 assert_eq!(diff, vec![]);
565 // Compare strings without distinguishing between CRLF and LF
566 fn string_eq_ignore_newline_repr(left: &str, right: &str) -> bool {
567 let left = CharsIgnoreNewlineRepr(left.chars().peekable());
568 let right = CharsIgnoreNewlineRepr(right.chars().peekable());
572 struct CharsIgnoreNewlineRepr<'a>(Peekable<Chars<'a>>);
574 impl<'a> Iterator for CharsIgnoreNewlineRepr<'a> {
576 fn next(&mut self) -> Option<char> {
577 self.0.next().map(|c| {
579 if *self.0.peek().unwrap_or(&'\0') == '\n' {
593 fn string_eq_ignore_newline_repr_test() {
594 assert!(string_eq_ignore_newline_repr("", ""));
595 assert!(!string_eq_ignore_newline_repr("", "abc"));
596 assert!(!string_eq_ignore_newline_repr("abc", ""));
597 assert!(string_eq_ignore_newline_repr("a\nb\nc\rd", "a\nb\r\nc\rd"));
598 assert!(string_eq_ignore_newline_repr("a\r\n\r\n\r\nb", "a\n\n\nb"));
599 assert!(!string_eq_ignore_newline_repr("a\r\nbcd", "a\nbcdefghijk"));
602 // This enum is used to represent one of three text features in Configurations.md: a block of code
603 // with its starting line number, the name of a rustfmt configuration option, or the value of a
604 // rustfmt configuration option.
605 enum ConfigurationSection {
606 CodeBlock((String, u32)), // (String: block of code, u32: line number of code block start)
611 impl ConfigurationSection {
612 fn get_section<I: Iterator<Item = String>>(
613 file: &mut Enumerate<I>,
614 ) -> Option<ConfigurationSection> {
616 static ref CONFIG_NAME_REGEX: regex::Regex =
617 regex::Regex::new(r"^## `([^`]+)`").expect("Failed creating configuration pattern");
618 static ref CONFIG_VALUE_REGEX: regex::Regex = regex::Regex::new(r#"^#### `"?([^`"]+)"?`"#)
619 .expect("Failed creating configuration value pattern");
625 if line.starts_with("```rust") {
626 // Get the lines of the code block.
627 let lines: Vec<String> = file.map(|(_i, l)| l)
628 .take_while(|l| !l.starts_with("```"))
630 let block = format!("{}\n", lines.join("\n"));
632 // +1 to translate to one-based indexing
633 // +1 to get to first line of code (line after "```")
634 let start_line = (i + 2) as u32;
636 return Some(ConfigurationSection::CodeBlock((block, start_line)));
637 } else if let Some(c) = CONFIG_NAME_REGEX.captures(&line) {
638 return Some(ConfigurationSection::ConfigName(String::from(&c[1])));
639 } else if let Some(c) = CONFIG_VALUE_REGEX.captures(&line) {
640 return Some(ConfigurationSection::ConfigValue(String::from(&c[1])));
643 None => return None, // reached the end of the file
649 // This struct stores the information about code blocks in the configurations
650 // file, formats the code blocks, and prints formatting errors.
651 struct ConfigCodeBlock {
652 config_name: Option<String>,
653 config_value: Option<String>,
654 code_block: Option<String>,
655 code_block_start: Option<u32>,
658 impl ConfigCodeBlock {
659 fn new() -> ConfigCodeBlock {
664 code_block_start: None,
668 fn set_config_name(&mut self, name: Option<String>) {
669 self.config_name = name;
670 self.config_value = None;
673 fn set_config_value(&mut self, value: Option<String>) {
674 self.config_value = value;
677 fn set_code_block(&mut self, code_block: String, code_block_start: u32) {
678 self.code_block = Some(code_block);
679 self.code_block_start = Some(code_block_start);
682 fn get_block_config(&self) -> Config {
683 let mut config = Config::default();
684 if self.config_value.is_some() && self.config_value.is_some() {
685 config.override_value(
686 self.config_name.as_ref().unwrap(),
687 self.config_value.as_ref().unwrap(),
693 fn code_block_valid(&self) -> bool {
694 // We never expect to not have a code block.
695 assert!(self.code_block.is_some() && self.code_block_start.is_some());
697 // See if code block begins with #![rustfmt_skip].
698 let fmt_skip = self.code_block
703 .unwrap_or("") == "#![rustfmt_skip]";
705 if self.config_name.is_none() && !fmt_skip {
706 write_message(&format!(
707 "No configuration name for {}:{}",
708 CONFIGURATIONS_FILE_NAME,
709 self.code_block_start.unwrap()
713 if self.config_value.is_none() && !fmt_skip {
714 write_message(&format!(
715 "No configuration value for {}:{}",
716 CONFIGURATIONS_FILE_NAME,
717 self.code_block_start.unwrap()
724 fn has_parsing_errors(&self, error_summary: Summary) -> bool {
725 if error_summary.has_parsing_errors() {
726 write_message(&format!(
727 "\u{261d}\u{1f3fd} Cannot format {}:{}",
728 CONFIGURATIONS_FILE_NAME,
729 self.code_block_start.unwrap()
737 fn print_diff(&self, compare: Vec<Mismatch>) {
738 let mut mismatches = HashMap::new();
739 mismatches.insert(PathBuf::from(CONFIGURATIONS_FILE_NAME), compare);
740 print_mismatches(mismatches, |line_num| {
742 "\nMismatch at {}:{}:",
743 CONFIGURATIONS_FILE_NAME,
744 line_num + self.code_block_start.unwrap() - 1
749 fn formatted_has_diff(&self, file_map: &FileMap) -> bool {
750 let &(ref _file_name, ref text) = file_map.first().unwrap();
751 let compare = make_diff(self.code_block.as_ref().unwrap(), text, DIFF_CONTEXT_SIZE);
752 if !compare.is_empty() {
753 self.print_diff(compare);
760 // Return a bool indicating if formatting this code block is an idempotent
761 // operation. This function also triggers printing any formatting failure
763 fn formatted_is_idempotent(&self) -> bool {
764 // Verify that we have all of the expected information.
765 if !self.code_block_valid() {
769 let input = Input::Text(self.code_block.as_ref().unwrap().to_owned());
770 let config = self.get_block_config();
772 let (error_summary, file_map, _report) =
773 format_input::<io::Stdout>(input, &config, None).unwrap();
775 !self.has_parsing_errors(error_summary) && !self.formatted_has_diff(&file_map)
778 // Extract a code block from the iterator. Behavior:
779 // - Rust code blocks are identifed by lines beginning with "```rust".
780 // - One explicit configuration setting is supported per code block.
781 // - Rust code blocks with no configuration setting are illegal and cause an
782 // assertion failure, unless the snippet begins with #![rustfmt_skip].
783 // - Configuration names in Configurations.md must be in the form of
785 // - Configuration values in Configurations.md must be in the form of
787 fn extract<I: Iterator<Item = String>>(
788 file: &mut Enumerate<I>,
789 prev: Option<&ConfigCodeBlock>,
790 hash_set: &mut HashSet<String>,
791 ) -> Option<ConfigCodeBlock> {
792 let mut code_block = ConfigCodeBlock::new();
793 code_block.config_name = prev.and_then(|cb| cb.config_name.clone());
796 match ConfigurationSection::get_section(file) {
797 Some(ConfigurationSection::CodeBlock((block, start_line))) => {
798 code_block.set_code_block(block, start_line);
801 Some(ConfigurationSection::ConfigName(name)) => {
803 Config::is_valid_name(&name),
804 "an unknown configuration option was found: {}",
808 hash_set.remove(&name),
809 "multiple configuration guides found for option {}",
812 code_block.set_config_name(Some(name));
814 Some(ConfigurationSection::ConfigValue(value)) => {
815 code_block.set_config_value(Some(value));
817 None => return None, // end of file was reached
826 fn configuration_snippet_tests() {
827 // Read Configurations.md and build a `Vec` of `ConfigCodeBlock` structs with one
828 // entry for each Rust code block found.
829 fn get_code_blocks() -> Vec<ConfigCodeBlock> {
830 let mut file_iter = BufReader::new(
831 fs::File::open(Path::new(CONFIGURATIONS_FILE_NAME))
832 .expect(&format!("Couldn't read file {}", CONFIGURATIONS_FILE_NAME)),
836 let mut code_blocks: Vec<ConfigCodeBlock> = Vec::new();
837 let mut hash_set = Config::hash_set();
840 ConfigCodeBlock::extract(&mut file_iter, code_blocks.last(), &mut hash_set)
842 code_blocks.push(cb);
845 for name in hash_set {
846 if !Config::is_hidden_option(&name) {
847 panic!("{} does not have a configuration guide", name);
854 let blocks = get_code_blocks();
855 let failures = blocks
857 .map(|b| b.formatted_is_idempotent())
858 .fold(0, |acc, r| acc + (!r as u32));
861 println!("Ran {} configurations tests.", blocks.len());
862 assert_eq!(failures, 0, "{} configurations tests failed", failures);