use std::cell::Cell; use std::default::Default; use std::fs::File; use std::io::{Error, ErrorKind, Read}; use std::path::{Path, PathBuf}; use std::{env, fs}; use thiserror::Error; use crate::config::config_type::ConfigType; #[allow(unreachable_pub)] pub use crate::config::file_lines::{FileLines, FileName, Range}; #[allow(unreachable_pub)] pub use crate::config::lists::*; #[allow(unreachable_pub)] pub use crate::config::options::*; #[macro_use] pub(crate) mod config_type; #[macro_use] pub(crate) mod options; pub(crate) mod file_lines; pub(crate) mod lists; // This macro defines configuration options used in rustfmt. Each option // is defined as follows: // // `name: value type, default value, is stable, description;` create_config! { // Fundamental stuff max_width: usize, 100, true, "Maximum width of each line"; hard_tabs: bool, false, true, "Use tab characters for indentation, spaces for alignment"; tab_spaces: usize, 4, true, "Number of spaces per tab"; newline_style: NewlineStyle, NewlineStyle::Auto, true, "Unix or Windows line endings"; indent_style: IndentStyle, IndentStyle::Block, false, "How do we indent expressions or items"; // Width Heuristics use_small_heuristics: Heuristics, Heuristics::Default, true, "Whether to use different \ formatting for items and expressions if they satisfy a heuristic notion of 'small'"; width_heuristics: WidthHeuristics, WidthHeuristics::scaled(100), false, "'small' heuristic values"; fn_call_width: usize, 60, true, "Maximum width of the args of a function call before \ falling back to vertical formatting."; attr_fn_like_width: usize, 70, true, "Maximum width of the args of a function-like \ attributes before falling back to vertical formatting."; struct_lit_width: usize, 18, true, "Maximum width in the body of a struct lit before \ falling back to vertical formatting."; struct_variant_width: usize, 35, true, "Maximum width in the body of a struct variant before \ falling back to vertical formatting."; array_width: usize, 60, true, "Maximum width of an array literal before falling \ back to vertical formatting."; chain_width: usize, 60, true, "Maximum length of a chain to fit on a single line."; single_line_if_else_max_width: usize, 50, true, "Maximum line length for single line if-else \ expressions. A value of zero means always break if-else expressions."; // Comments. macros, and strings wrap_comments: bool, false, false, "Break comments to fit on the line"; format_code_in_doc_comments: bool, false, false, "Format the code snippet in doc comments."; doc_comment_code_block_width: usize, 100, false, "Maximum width for code snippets in doc \ comments. No effect unless format_code_in_doc_comments = true"; comment_width: usize, 80, false, "Maximum length of comments. No effect unless wrap_comments = true"; normalize_comments: bool, false, false, "Convert /* */ comments to // comments where possible"; normalize_doc_attributes: bool, false, false, "Normalize doc attributes as doc comments"; format_strings: bool, false, false, "Format string literals where necessary"; format_macro_matchers: bool, false, false, "Format the metavariable matching patterns in macros"; format_macro_bodies: bool, true, false, "Format the bodies of macros"; hex_literal_case: HexLiteralCase, HexLiteralCase::Preserve, false, "Format hexadecimal integer literals"; // Single line expressions and items empty_item_single_line: bool, true, false, "Put empty-body functions and impls on a single line"; struct_lit_single_line: bool, true, false, "Put small struct literals on a single line"; fn_single_line: bool, false, false, "Put single-expression functions on a single line"; where_single_line: bool, false, false, "Force where-clauses to be on a single line"; // Imports imports_indent: IndentStyle, IndentStyle::Block, false, "Indent of imports"; imports_layout: ListTactic, ListTactic::Mixed, false, "Item layout inside a import block"; imports_granularity: ImportGranularity, ImportGranularity::Preserve, false, "Merge or split imports to the provided granularity"; group_imports: GroupImportsTactic, GroupImportsTactic::Preserve, false, "Controls the strategy for how imports are grouped together"; merge_imports: bool, false, false, "(deprecated: use imports_granularity instead)"; // Ordering reorder_imports: bool, true, true, "Reorder import and extern crate statements alphabetically"; reorder_modules: bool, true, true, "Reorder module statements alphabetically in group"; reorder_impl_items: bool, false, false, "Reorder impl items"; // Spaces around punctuation type_punctuation_density: TypeDensity, TypeDensity::Wide, false, "Determines if '+' or '=' are wrapped in spaces in the punctuation of types"; space_before_colon: bool, false, false, "Leave a space before the colon"; space_after_colon: bool, true, false, "Leave a space after the colon"; spaces_around_ranges: bool, false, false, "Put spaces around the .. and ..= range operators"; binop_separator: SeparatorPlace, SeparatorPlace::Front, false, "Where to put a binary operator when a binary expression goes multiline"; // Misc. remove_nested_parens: bool, true, true, "Remove nested parens"; combine_control_expr: bool, true, false, "Combine control expressions with function calls"; short_array_element_width_threshold: usize, 10, true, "Width threshold for an array element to be considered short"; overflow_delimited_expr: bool, false, false, "Allow trailing bracket/brace delimited expressions to overflow"; struct_field_align_threshold: usize, 0, false, "Align struct fields if their diffs fits within threshold"; enum_discrim_align_threshold: usize, 0, false, "Align enum variants discrims, if their diffs fit within threshold"; match_arm_blocks: bool, true, false, "Wrap the body of arms in blocks when it does not fit on \ the same line with the pattern of arms"; match_arm_leading_pipes: MatchArmLeadingPipe, MatchArmLeadingPipe::Never, true, "Determines whether leading pipes are emitted on match arms"; force_multiline_blocks: bool, false, false, "Force multiline closure bodies and match arms to be wrapped in a block"; fn_args_layout: Density, Density::Tall, true, "Control the layout of arguments in a function"; brace_style: BraceStyle, BraceStyle::SameLineWhere, false, "Brace style for items"; control_brace_style: ControlBraceStyle, ControlBraceStyle::AlwaysSameLine, false, "Brace style for control flow constructs"; trailing_semicolon: bool, true, false, "Add trailing semicolon after break, continue and return"; trailing_comma: SeparatorTactic, SeparatorTactic::Vertical, false, "How to handle trailing commas for lists"; match_block_trailing_comma: bool, false, true, "Put a trailing comma after a block based match arm (non-block arms are not affected)"; blank_lines_upper_bound: usize, 1, false, "Maximum number of blank lines which can be put between items"; blank_lines_lower_bound: usize, 0, false, "Minimum number of blank lines which must be put between items"; edition: Edition, Edition::Edition2015, true, "The edition of the parser (RFC 2052)"; version: Version, Version::One, false, "Version of formatting rules"; inline_attribute_width: usize, 0, false, "Write an item and its attribute on the same line \ if their combined width is below a threshold"; format_generated_files: bool, true, false, "Format generated files"; // Options that can change the source code beyond whitespace/blocks (somewhat linty things) merge_derives: bool, true, true, "Merge multiple `#[derive(...)]` into a single one"; use_try_shorthand: bool, false, true, "Replace uses of the try! macro by the ? shorthand"; use_field_init_shorthand: bool, false, true, "Use field initialization shorthand if possible"; force_explicit_abi: bool, true, true, "Always print the abi for extern items"; condense_wildcard_suffixes: bool, false, false, "Replace strings of _ wildcards by a single .. \ in tuple patterns"; // Control options (changes the operation of rustfmt, rather than the formatting) color: Color, Color::Auto, false, "What Color option to use when none is supplied: Always, Never, Auto"; required_version: String, env!("CARGO_PKG_VERSION").to_owned(), false, "Require a specific version of rustfmt"; unstable_features: bool, false, false, "Enables unstable features. Only available on nightly channel"; disable_all_formatting: bool, false, true, "Don't reformat anything"; skip_children: bool, false, false, "Don't reformat out of line modules"; hide_parse_errors: bool, false, false, "Hide errors from the parser"; error_on_line_overflow: bool, false, false, "Error if unable to get all lines within max_width"; error_on_unformatted: bool, false, false, "Error if unable to get comments or string literals within max_width, \ or they are left with trailing whitespaces"; ignore: IgnoreList, IgnoreList::default(), false, "Skip formatting the specified files and directories"; // Not user-facing verbose: Verbosity, Verbosity::Normal, false, "How much to information to emit to the user"; file_lines: FileLines, FileLines::all(), false, "Lines to format; this is not supported in rustfmt.toml, and can only be specified \ via the --file-lines option"; emit_mode: EmitMode, EmitMode::Files, false, "What emit Mode to use when none is supplied"; make_backup: bool, false, false, "Backup changed files"; print_misformatted_file_names: bool, false, true, "Prints the names of mismatched files that were formatted. Prints the names of \ files that would be formated when used with `--check` mode. "; } #[derive(Error, Debug)] #[error("Could not output config: {0}")] pub struct ToTomlError(toml::ser::Error); impl PartialConfig { pub fn to_toml(&self) -> Result { // Non-user-facing options can't be specified in TOML let mut cloned = self.clone(); cloned.file_lines = None; cloned.verbose = None; cloned.width_heuristics = None; cloned.print_misformatted_file_names = None; cloned.merge_imports = None; ::toml::to_string(&cloned).map_err(ToTomlError) } } impl Config { pub(crate) fn version_meets_requirement(&self) -> bool { if self.was_set().required_version() { let version = env!("CARGO_PKG_VERSION"); let required_version = self.required_version(); if version != required_version { println!( "Error: rustfmt version ({}) doesn't match the required version ({})", version, required_version, ); return false; } } true } /// Constructs a `Config` from the toml file specified at `file_path`. /// /// This method only looks at the provided path, for a method that /// searches parents for a `rustfmt.toml` see `from_resolved_toml_path`. /// /// Returns a `Config` if the config could be read and parsed from /// the file, otherwise errors. pub(super) fn from_toml_path(file_path: &Path) -> Result { let mut file = File::open(&file_path)?; let mut toml = String::new(); file.read_to_string(&mut toml)?; Config::from_toml(&toml, file_path.parent().unwrap()) .map_err(|err| Error::new(ErrorKind::InvalidData, err)) } /// Resolves the config for input in `dir`. /// /// Searches for `rustfmt.toml` beginning with `dir`, and /// recursively checking parents of `dir` if no config file is found. /// If no config file exists in `dir` or in any parent, a /// default `Config` will be returned (and the returned path will be empty). /// /// Returns the `Config` to use, and the path of the project file if there was /// one. pub(super) fn from_resolved_toml_path(dir: &Path) -> Result<(Config, Option), Error> { /// Try to find a project file in the given directory and its parents. /// Returns the path of a the nearest project file if one exists, /// or `None` if no project file was found. fn resolve_project_file(dir: &Path) -> Result, Error> { let mut current = if dir.is_relative() { env::current_dir()?.join(dir) } else { dir.to_path_buf() }; current = fs::canonicalize(current)?; loop { match get_toml_path(¤t) { Ok(Some(path)) => return Ok(Some(path)), Err(e) => return Err(e), _ => (), } // If the current directory has no parent, we're done searching. if !current.pop() { break; } } // If nothing was found, check in the home directory. if let Some(home_dir) = dirs::home_dir() { if let Some(path) = get_toml_path(&home_dir)? { return Ok(Some(path)); } } // If none was found ther either, check in the user's configuration directory. if let Some(mut config_dir) = dirs::config_dir() { config_dir.push("rustfmt"); if let Some(path) = get_toml_path(&config_dir)? { return Ok(Some(path)); } } Ok(None) } match resolve_project_file(dir)? { None => Ok((Config::default(), None)), Some(path) => Config::from_toml_path(&path).map(|config| (config, Some(path))), } } pub(crate) fn from_toml(toml: &str, dir: &Path) -> Result { let parsed: ::toml::Value = toml .parse() .map_err(|e| format!("Could not parse TOML: {}", e))?; let mut err = String::new(); let table = parsed .as_table() .ok_or_else(|| String::from("Parsed config was not table"))?; for key in table.keys() { if !Config::is_valid_name(key) { let msg = &format!("Warning: Unknown configuration option `{}`\n", key); err.push_str(msg) } } match parsed.try_into() { Ok(parsed_config) => { if !err.is_empty() { eprint!("{}", err); } Ok(Config::default().fill_from_parsed_config(parsed_config, dir)) } Err(e) => { err.push_str("Error: Decoding config file failed:\n"); err.push_str(format!("{}\n", e).as_str()); err.push_str("Please check your config file."); Err(err) } } } } /// Loads a config by checking the client-supplied options and if appropriate, the /// file system (including searching the file system for overrides). pub fn load_config( file_path: Option<&Path>, options: Option, ) -> Result<(Config, Option), Error> { let over_ride = match options { Some(ref opts) => config_path(opts)?, None => None, }; let result = if let Some(over_ride) = over_ride { Config::from_toml_path(over_ride.as_ref()).map(|p| (p, Some(over_ride.to_owned()))) } else if let Some(file_path) = file_path { Config::from_resolved_toml_path(file_path) } else { Ok((Config::default(), None)) }; result.map(|(mut c, p)| { if let Some(options) = options { options.apply_to(&mut c); } (c, p) }) } // Check for the presence of known config file names (`rustfmt.toml, `.rustfmt.toml`) in `dir` // // Return the path if a config file exists, empty if no file exists, and Error for IO errors fn get_toml_path(dir: &Path) -> Result, Error> { const CONFIG_FILE_NAMES: [&str; 2] = [".rustfmt.toml", "rustfmt.toml"]; for config_file_name in &CONFIG_FILE_NAMES { let config_file = dir.join(config_file_name); match fs::metadata(&config_file) { // Only return if it's a file to handle the unlikely situation of a directory named // `rustfmt.toml`. Ok(ref md) if md.is_file() => return Ok(Some(config_file)), // Return the error if it's something other than `NotFound`; otherwise we didn't // find the project file yet, and continue searching. Err(e) => { if e.kind() != ErrorKind::NotFound { let ctx = format!("Failed to get metadata for config file {:?}", &config_file); let err = anyhow::Error::new(e).context(ctx); return Err(Error::new(ErrorKind::Other, err)); } } _ => {} } } Ok(None) } fn config_path(options: &dyn CliOptions) -> Result, Error> { let config_path_not_found = |path: &str| -> Result, Error> { Err(Error::new( ErrorKind::NotFound, format!( "Error: unable to find a config file for the given path: `{}`", path ), )) }; // Read the config_path and convert to parent dir if a file is provided. // If a config file cannot be found from the given path, return error. match options.config_path() { Some(path) if !path.exists() => config_path_not_found(path.to_str().unwrap()), Some(path) if path.is_dir() => { let config_file_path = get_toml_path(path)?; if config_file_path.is_some() { Ok(config_file_path) } else { config_path_not_found(path.to_str().unwrap()) } } path => Ok(path.map(ToOwned::to_owned)), } } #[cfg(test)] mod test { use super::*; use std::str; use rustfmt_config_proc_macro::{nightly_only_test, stable_only_test}; #[allow(dead_code)] mod mock { use super::super::*; create_config! { // Options that are used by the generated functions max_width: usize, 100, true, "Maximum width of each line"; required_version: String, env!("CARGO_PKG_VERSION").to_owned(), false, "Require a specific version of rustfmt."; ignore: IgnoreList, IgnoreList::default(), false, "Skip formatting the specified files and directories."; verbose: Verbosity, Verbosity::Normal, false, "How much to information to emit to the user"; file_lines: FileLines, FileLines::all(), false, "Lines to format; this is not supported in rustfmt.toml, and can only be specified \ via the --file-lines option"; // merge_imports deprecation imports_granularity: ImportGranularity, ImportGranularity::Preserve, false, "Merge imports"; merge_imports: bool, false, false, "(deprecated: use imports_granularity instead)"; // Width Heuristics use_small_heuristics: Heuristics, Heuristics::Default, true, "Whether to use different formatting for items and \ expressions if they satisfy a heuristic notion of 'small'."; width_heuristics: WidthHeuristics, WidthHeuristics::scaled(100), false, "'small' heuristic values"; fn_call_width: usize, 60, true, "Maximum width of the args of a function call before \ falling back to vertical formatting."; attr_fn_like_width: usize, 70, true, "Maximum width of the args of a function-like \ attributes before falling back to vertical formatting."; struct_lit_width: usize, 18, true, "Maximum width in the body of a struct lit before \ falling back to vertical formatting."; struct_variant_width: usize, 35, true, "Maximum width in the body of a struct \ variant before falling back to vertical formatting."; array_width: usize, 60, true, "Maximum width of an array literal before falling \ back to vertical formatting."; chain_width: usize, 60, true, "Maximum length of a chain to fit on a single line."; single_line_if_else_max_width: usize, 50, true, "Maximum line length for single \ line if-else expressions. A value of zero means always break if-else expressions."; // Options that are used by the tests stable_option: bool, false, true, "A stable option"; unstable_option: bool, false, false, "An unstable option"; } } #[test] fn test_config_set() { let mut config = Config::default(); config.set().verbose(Verbosity::Quiet); assert_eq!(config.verbose(), Verbosity::Quiet); config.set().verbose(Verbosity::Normal); assert_eq!(config.verbose(), Verbosity::Normal); } #[test] fn test_config_used_to_toml() { let config = Config::default(); let merge_derives = config.merge_derives(); let skip_children = config.skip_children(); let used_options = config.used_options(); let toml = used_options.to_toml().unwrap(); assert_eq!( toml, format!( "merge_derives = {}\nskip_children = {}\n", merge_derives, skip_children, ) ); } #[test] fn test_was_set() { let config = Config::from_toml("hard_tabs = true", Path::new("")).unwrap(); assert_eq!(config.was_set().hard_tabs(), true); assert_eq!(config.was_set().verbose(), false); } #[test] fn test_print_docs_exclude_unstable() { use self::mock::Config; let mut output = Vec::new(); Config::print_docs(&mut output, false); let s = str::from_utf8(&output).unwrap(); assert_eq!(s.contains("stable_option"), true); assert_eq!(s.contains("unstable_option"), false); assert_eq!(s.contains("(unstable)"), false); } #[test] fn test_print_docs_include_unstable() { use self::mock::Config; let mut output = Vec::new(); Config::print_docs(&mut output, true); let s = str::from_utf8(&output).unwrap(); assert_eq!(s.contains("stable_option"), true); assert_eq!(s.contains("unstable_option"), true); assert_eq!(s.contains("(unstable)"), true); } #[test] fn test_dump_default_config() { let default_config = format!( r#"max_width = 100 hard_tabs = false tab_spaces = 4 newline_style = "Auto" indent_style = "Block" use_small_heuristics = "Default" fn_call_width = 60 attr_fn_like_width = 70 struct_lit_width = 18 struct_variant_width = 35 array_width = 60 chain_width = 60 single_line_if_else_max_width = 50 wrap_comments = false format_code_in_doc_comments = false doc_comment_code_block_width = 100 comment_width = 80 normalize_comments = false normalize_doc_attributes = false format_strings = false format_macro_matchers = false format_macro_bodies = true hex_literal_case = "Preserve" empty_item_single_line = true struct_lit_single_line = true fn_single_line = false where_single_line = false imports_indent = "Block" imports_layout = "Mixed" imports_granularity = "Preserve" group_imports = "Preserve" reorder_imports = true reorder_modules = true reorder_impl_items = false type_punctuation_density = "Wide" space_before_colon = false space_after_colon = true spaces_around_ranges = false binop_separator = "Front" remove_nested_parens = true combine_control_expr = true short_array_element_width_threshold = 10 overflow_delimited_expr = false struct_field_align_threshold = 0 enum_discrim_align_threshold = 0 match_arm_blocks = true match_arm_leading_pipes = "Never" force_multiline_blocks = false fn_args_layout = "Tall" brace_style = "SameLineWhere" control_brace_style = "AlwaysSameLine" trailing_semicolon = true trailing_comma = "Vertical" match_block_trailing_comma = false blank_lines_upper_bound = 1 blank_lines_lower_bound = 0 edition = "2015" version = "One" inline_attribute_width = 0 format_generated_files = true merge_derives = true use_try_shorthand = false use_field_init_shorthand = false force_explicit_abi = true condense_wildcard_suffixes = false color = "Auto" required_version = "{}" unstable_features = false disable_all_formatting = false skip_children = false hide_parse_errors = false error_on_line_overflow = false error_on_unformatted = false ignore = [] emit_mode = "Files" make_backup = false "#, env!("CARGO_PKG_VERSION") ); let toml = Config::default().all_options().to_toml().unwrap(); assert_eq!(&toml, &default_config); } #[stable_only_test] #[test] fn test_as_not_nightly_channel() { let mut config = Config::default(); assert_eq!(config.was_set().unstable_features(), false); config.set().unstable_features(true); assert_eq!(config.was_set().unstable_features(), false); } #[nightly_only_test] #[test] fn test_as_nightly_channel() { let mut config = Config::default(); config.set().unstable_features(true); // When we don't set the config from toml or command line options it // doesn't get marked as set by the user. assert_eq!(config.was_set().unstable_features(), false); config.set().unstable_features(true); assert_eq!(config.unstable_features(), true); } #[nightly_only_test] #[test] fn test_unstable_from_toml() { let config = Config::from_toml("unstable_features = true", Path::new("")).unwrap(); assert_eq!(config.was_set().unstable_features(), true); assert_eq!(config.unstable_features(), true); } #[cfg(test)] mod deprecated_option_merge_imports { use super::*; #[nightly_only_test] #[test] fn test_old_option_set() { let toml = r#" unstable_features = true merge_imports = true "#; let config = Config::from_toml(toml, Path::new("")).unwrap(); assert_eq!(config.imports_granularity(), ImportGranularity::Crate); } #[nightly_only_test] #[test] fn test_both_set() { let toml = r#" unstable_features = true merge_imports = true imports_granularity = "Preserve" "#; let config = Config::from_toml(toml, Path::new("")).unwrap(); assert_eq!(config.imports_granularity(), ImportGranularity::Preserve); } #[nightly_only_test] #[test] fn test_new_overridden() { let toml = r#" unstable_features = true merge_imports = true "#; let mut config = Config::from_toml(toml, Path::new("")).unwrap(); config.override_value("imports_granularity", "Preserve"); assert_eq!(config.imports_granularity(), ImportGranularity::Preserve); } #[nightly_only_test] #[test] fn test_old_overridden() { let toml = r#" unstable_features = true imports_granularity = "Module" "#; let mut config = Config::from_toml(toml, Path::new("")).unwrap(); config.override_value("merge_imports", "true"); // no effect: the new option always takes precedence assert_eq!(config.imports_granularity(), ImportGranularity::Module); } } #[cfg(test)] mod use_small_heuristics { use super::*; #[test] fn test_default_sets_correct_widths() { let toml = r#" use_small_heuristics = "Default" max_width = 200 "#; let config = Config::from_toml(toml, Path::new("")).unwrap(); assert_eq!(config.array_width(), 120); assert_eq!(config.attr_fn_like_width(), 140); assert_eq!(config.chain_width(), 120); assert_eq!(config.fn_call_width(), 120); assert_eq!(config.single_line_if_else_max_width(), 100); assert_eq!(config.struct_lit_width(), 36); assert_eq!(config.struct_variant_width(), 70); } #[test] fn test_max_sets_correct_widths() { let toml = r#" use_small_heuristics = "Max" max_width = 120 "#; let config = Config::from_toml(toml, Path::new("")).unwrap(); assert_eq!(config.array_width(), 120); assert_eq!(config.attr_fn_like_width(), 120); assert_eq!(config.chain_width(), 120); assert_eq!(config.fn_call_width(), 120); assert_eq!(config.single_line_if_else_max_width(), 120); assert_eq!(config.struct_lit_width(), 120); assert_eq!(config.struct_variant_width(), 120); } #[test] fn test_off_sets_correct_widths() { let toml = r#" use_small_heuristics = "Off" max_width = 100 "#; let config = Config::from_toml(toml, Path::new("")).unwrap(); assert_eq!(config.array_width(), usize::max_value()); assert_eq!(config.attr_fn_like_width(), usize::max_value()); assert_eq!(config.chain_width(), usize::max_value()); assert_eq!(config.fn_call_width(), usize::max_value()); assert_eq!(config.single_line_if_else_max_width(), 0); assert_eq!(config.struct_lit_width(), 0); assert_eq!(config.struct_variant_width(), 0); } #[test] fn test_override_works_with_default() { let toml = r#" use_small_heuristics = "Default" array_width = 20 attr_fn_like_width = 40 chain_width = 20 fn_call_width = 90 single_line_if_else_max_width = 40 struct_lit_width = 30 struct_variant_width = 34 "#; let config = Config::from_toml(toml, Path::new("")).unwrap(); assert_eq!(config.array_width(), 20); assert_eq!(config.attr_fn_like_width(), 40); assert_eq!(config.chain_width(), 20); assert_eq!(config.fn_call_width(), 90); assert_eq!(config.single_line_if_else_max_width(), 40); assert_eq!(config.struct_lit_width(), 30); assert_eq!(config.struct_variant_width(), 34); } #[test] fn test_override_with_max() { let toml = r#" use_small_heuristics = "Max" array_width = 20 attr_fn_like_width = 40 chain_width = 20 fn_call_width = 90 single_line_if_else_max_width = 40 struct_lit_width = 30 struct_variant_width = 34 "#; let config = Config::from_toml(toml, Path::new("")).unwrap(); assert_eq!(config.array_width(), 20); assert_eq!(config.attr_fn_like_width(), 40); assert_eq!(config.chain_width(), 20); assert_eq!(config.fn_call_width(), 90); assert_eq!(config.single_line_if_else_max_width(), 40); assert_eq!(config.struct_lit_width(), 30); assert_eq!(config.struct_variant_width(), 34); } #[test] fn test_override_with_off() { let toml = r#" use_small_heuristics = "Off" array_width = 20 attr_fn_like_width = 40 chain_width = 20 fn_call_width = 90 single_line_if_else_max_width = 40 struct_lit_width = 30 struct_variant_width = 34 "#; let config = Config::from_toml(toml, Path::new("")).unwrap(); assert_eq!(config.array_width(), 20); assert_eq!(config.attr_fn_like_width(), 40); assert_eq!(config.chain_width(), 20); assert_eq!(config.fn_call_width(), 90); assert_eq!(config.single_line_if_else_max_width(), 40); assert_eq!(config.struct_lit_width(), 30); assert_eq!(config.struct_variant_width(), 34); } #[test] fn test_fn_call_width_config_exceeds_max_width() { let toml = r#" max_width = 90 fn_call_width = 95 "#; let config = Config::from_toml(toml, Path::new("")).unwrap(); assert_eq!(config.fn_call_width(), 90); } #[test] fn test_attr_fn_like_width_config_exceeds_max_width() { let toml = r#" max_width = 80 attr_fn_like_width = 90 "#; let config = Config::from_toml(toml, Path::new("")).unwrap(); assert_eq!(config.attr_fn_like_width(), 80); } #[test] fn test_struct_lit_config_exceeds_max_width() { let toml = r#" max_width = 78 struct_lit_width = 90 "#; let config = Config::from_toml(toml, Path::new("")).unwrap(); assert_eq!(config.struct_lit_width(), 78); } #[test] fn test_struct_variant_width_config_exceeds_max_width() { let toml = r#" max_width = 80 struct_variant_width = 90 "#; let config = Config::from_toml(toml, Path::new("")).unwrap(); assert_eq!(config.struct_variant_width(), 80); } #[test] fn test_array_width_config_exceeds_max_width() { let toml = r#" max_width = 60 array_width = 80 "#; let config = Config::from_toml(toml, Path::new("")).unwrap(); assert_eq!(config.array_width(), 60); } #[test] fn test_chain_width_config_exceeds_max_width() { let toml = r#" max_width = 80 chain_width = 90 "#; let config = Config::from_toml(toml, Path::new("")).unwrap(); assert_eq!(config.chain_width(), 80); } #[test] fn test_single_line_if_else_max_width_config_exceeds_max_width() { let toml = r#" max_width = 70 single_line_if_else_max_width = 90 "#; let config = Config::from_toml(toml, Path::new("")).unwrap(); assert_eq!(config.single_line_if_else_max_width(), 70); } #[test] fn test_override_fn_call_width_exceeds_max_width() { let mut config = Config::default(); config.override_value("fn_call_width", "101"); assert_eq!(config.fn_call_width(), 100); } #[test] fn test_override_attr_fn_like_width_exceeds_max_width() { let mut config = Config::default(); config.override_value("attr_fn_like_width", "101"); assert_eq!(config.attr_fn_like_width(), 100); } #[test] fn test_override_struct_lit_exceeds_max_width() { let mut config = Config::default(); config.override_value("struct_lit_width", "101"); assert_eq!(config.struct_lit_width(), 100); } #[test] fn test_override_struct_variant_width_exceeds_max_width() { let mut config = Config::default(); config.override_value("struct_variant_width", "101"); assert_eq!(config.struct_variant_width(), 100); } #[test] fn test_override_array_width_exceeds_max_width() { let mut config = Config::default(); config.override_value("array_width", "101"); assert_eq!(config.array_width(), 100); } #[test] fn test_override_chain_width_exceeds_max_width() { let mut config = Config::default(); config.override_value("chain_width", "101"); assert_eq!(config.chain_width(), 100); } #[test] fn test_override_single_line_if_else_max_width_exceeds_max_width() { let mut config = Config::default(); config.override_value("single_line_if_else_max_width", "101"); assert_eq!(config.single_line_if_else_max_width(), 100); } } }