Auto merge of #11239 - oli-obk:ui_test, r=Alexendoo,flip1995

Update ui test crate This update also removes the `//`@run-rustfix`` flag, and just runs rustfix on all tests. This means I had to opt out of running rustfix on ~100 tests, but it also allowed me to remove the rustfix coverage check entirely, as it is now effectively builtin. changelog: update ui-test crate to 0.13 (automatically runs rustfix on all tests)
rust-lang · Aug 11, 2023 · 739faf3 · 739faf3
2 parents 1e8fdf4 + 665a619
commit 739faf3
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diff --git a/.cargo/config.toml b/.cargo/config.toml
@@ -1,7 +1,7 @@
 [alias]
-uitest = "test --test compile-test"
-uibless = "test --test compile-test -- -- --bless"
-bless = "test -- -- --bless"
+uitest = "test --test compile-test -- --check"
+uibless = "test --test compile-test"
+bless = "test"
 dev = "run --package clippy_dev --bin clippy_dev --manifest-path clippy_dev/Cargo.toml --"
 lintcheck = "run --package lintcheck --bin lintcheck --manifest-path lintcheck/Cargo.toml  -- "
 collect-metadata = "test --test dogfood --features internal -- run_metadata_collection_lint --ignored"

diff --git a/Cargo.toml b/Cargo.toml
@@ -27,7 +27,7 @@ tempfile = { version = "3.2", optional = true }
 termize = "0.1"
 
 [dev-dependencies]
-ui_test = "0.11.5"
+ui_test = "0.17.0"
 tester = "0.9"
 regex = "1.5"
 toml = "0.7.3"

diff --git a/book/src/development/adding_lints.md b/book/src/development/adding_lints.md
@@ -161,8 +161,8 @@ The process of generating the `.stderr` file is the same, and prepending the
 ## Rustfix tests
 
 If the lint you are working on is making use of structured suggestions, the test
-file should include a `//@run-rustfix` comment at the top. This will
-additionally run [rustfix] for that test. Rustfix will apply the suggestions
+will create a `.fixed` file by running [rustfix] for that test.
+Rustfix will apply the suggestions
 from the lint to the code of the test file and compare that to the contents of a
 `.fixed` file.
 

diff --git a/clippy_dev/src/update_lints.rs b/clippy_dev/src/update_lints.rs
@@ -690,7 +690,6 @@ fn gen_deprecated_lints_test(lints: &[DeprecatedLint]) -> String {
 fn gen_renamed_lints_test(lints: &[RenamedLint]) -> String {
     let mut seen_lints = HashSet::new();
     let mut res: String = GENERATED_FILE_COMMENT.into();
-    res.push_str("//@run-rustfix\n\n");
     for lint in lints {
         if seen_lints.insert(&lint.new_name) {
             writeln!(res, "#![allow({})]", lint.new_name).unwrap();

diff --git a/tests/compile-test.rs b/tests/compile-test.rs
@@ -5,7 +5,7 @@
 #![warn(rust_2018_idioms, unused_lifetimes)]
 #![allow(unused_extern_crates)]
 
-use compiletest::{status_emitter, CommandBuilder, OutputConflictHandling};
+use compiletest::{status_emitter, Args, CommandBuilder, OutputConflictHandling};
 use ui_test as compiletest;
 use ui_test::Mode as TestMode;
 
@@ -110,28 +110,33 @@ mod test_utils;
 // whether to run internal tests or not
 const RUN_INTERNAL_TESTS: bool = cfg!(feature = "internal");
 
-fn base_config(test_dir: &str) -> compiletest::Config {
+fn canonicalize(path: impl AsRef<Path>) -> PathBuf {
+    let path = path.as_ref();
+    fs::create_dir_all(path).unwrap();
+    fs::canonicalize(path).unwrap_or_else(|err| panic!("{} cannot be canonicalized: {err}", path.display()))
+}
+
+fn base_config(test_dir: &str) -> (compiletest::Config, Args) {
+    let args = Args::test().unwrap();
     let mut config = compiletest::Config {
-        mode: TestMode::Yolo,
+        mode: TestMode::Yolo { rustfix: true },
         stderr_filters: vec![],
         stdout_filters: vec![],
-        output_conflict_handling: if var_os("RUSTC_BLESS").is_some_and(|v| v != "0")
-            || env::args().any(|arg| arg == "--bless")
+        output_conflict_handling: if var_os("GITHUB_ACTION").is_none()
+            && (var_os("RUSTC_BLESS").is_some_and(|v| v != "0") || !args.check)
         {
             OutputConflictHandling::Bless
         } else {
             OutputConflictHandling::Error("cargo uibless".into())
         },
         target: None,
-        out_dir: PathBuf::from(std::env::var_os("CARGO_TARGET_DIR").unwrap_or("target".into())).join("ui_test"),
+        out_dir: canonicalize(
+            std::env::var_os("CARGO_TARGET_DIR")
+                .map_or_else(|| std::env::current_dir().unwrap().join("target"), PathBuf::from),
+        )
+        .join("ui_test"),
         ..compiletest::Config::rustc(Path::new("tests").join(test_dir))
     };
-
-    if let Some(_path) = option_env!("RUSTC_LIB_PATH") {
-        //let path = PathBuf::from(path);
-        //config.run_lib_path = path.clone();
-        //config.compile_lib_path = path;
-    }
     let current_exe_path = env::current_exe().unwrap();
     let deps_path = current_exe_path.parent().unwrap();
     let profile_path = deps_path.parent().unwrap();
@@ -164,7 +169,7 @@ fn base_config(test_dir: &str) -> compiletest::Config {
     } else {
         "clippy-driver"
     });
-    config
+    (config, args)
 }
 
 fn test_filter() -> Box<dyn Sync + Fn(&Path) -> bool> {
@@ -177,10 +182,10 @@ fn test_filter() -> Box<dyn Sync + Fn(&Path) -> bool> {
 }
 
 fn run_ui() {
-    let config = base_config("ui");
+    let (config, args) = base_config("ui");
     //config.rustfix_coverage = true;
     // use tests/clippy.toml
-    let _g = VarGuard::set("CARGO_MANIFEST_DIR", fs::canonicalize("tests").unwrap());
+    let _g = VarGuard::set("CARGO_MANIFEST_DIR", canonicalize("tests"));
     let _threads = VarGuard::set(
         "RUST_TEST_THREADS",
         // if RUST_TEST_THREADS is set, adhere to it, otherwise override it
@@ -193,43 +198,54 @@ fn run_ui() {
 
     let test_filter = test_filter();
 
+    let quiet = args.quiet;
+
     compiletest::run_tests_generic(
-        config,
-        move |path| compiletest::default_file_filter(path) && test_filter(path),
+        vec![config],
+        args,
+        move |path, args, config| compiletest::default_file_filter(path, args, config) && test_filter(path),
         compiletest::default_per_file_config,
-        status_emitter::Text,
+        if quiet {
+            status_emitter::Text::quiet()
+        } else {
+            status_emitter::Text::verbose()
+        },
     )
     .unwrap();
-    check_rustfix_coverage();
 }
 
 fn run_internal_tests() {
     // only run internal tests with the internal-tests feature
     if !RUN_INTERNAL_TESTS {
         return;
     }
-    let mut config = base_config("ui-internal");
+    let (mut config, args) = base_config("ui-internal");
     if let OutputConflictHandling::Error(err) = &mut config.output_conflict_handling {
-        *err = "cargo uitest --features internal -- -- --bless".into();
+        *err = "cargo uitest --features internal".into();
     }
     let test_filter = test_filter();
+    let quiet = args.quiet;
 
     compiletest::run_tests_generic(
-        config,
-        move |path| compiletest::default_file_filter(path) && test_filter(path),
+        vec![config],
+        args,
+        move |path, args, config| compiletest::default_file_filter(path, args, config) && test_filter(path),
         compiletest::default_per_file_config,
-        status_emitter::Text,
+        if quiet {
+            status_emitter::Text::quiet()
+        } else {
+            status_emitter::Text::verbose()
+        },
     )
     .unwrap();
 }
 
 fn run_ui_toml() {
-    let mut config = base_config("ui-toml");
+    let (mut config, args) = base_config("ui-toml");
 
     config.stderr_filter(
         &regex::escape(
-            &fs::canonicalize("tests")
-                .unwrap()
+            &canonicalize("tests")
                 .parent()
                 .unwrap()
                 .display()
@@ -240,19 +256,23 @@ fn run_ui_toml() {
     );
 
     let test_filter = test_filter();
+    let quiet = args.quiet;
 
     ui_test::run_tests_generic(
-        config,
-        |path| compiletest::default_file_filter(path) && test_filter(path),
-        |config, path| {
-            let mut config = config.clone();
+        vec![config],
+        args,
+        |path, args, config| compiletest::default_file_filter(path, args, config) && test_filter(path),
+        |config, path, _file_contents| {
             config
                 .program
                 .envs
                 .push(("CLIPPY_CONF_DIR".into(), Some(path.parent().unwrap().into())));
-            Some(config)
         },
-        status_emitter::Text,
+        if quiet {
+            status_emitter::Text::quiet()
+        } else {
+            status_emitter::Text::verbose()
+        },
     )
     .unwrap();
 }
@@ -262,7 +282,7 @@ fn run_ui_cargo() {
         return;
     }
 
-    let mut config = base_config("ui-cargo");
+    let (mut config, args) = base_config("ui-cargo");
     config.program.input_file_flag = CommandBuilder::cargo().input_file_flag;
     config.program.out_dir_flag = CommandBuilder::cargo().out_dir_flag;
     config.program.args = vec!["clippy".into(), "--color".into(), "never".into(), "--quiet".into()];
@@ -282,8 +302,7 @@ fn run_ui_cargo() {
 
     config.stderr_filter(
         &regex::escape(
-            &fs::canonicalize("tests")
-                .unwrap()
+            &canonicalize("tests")
                 .parent()
                 .unwrap()
                 .display()
@@ -294,16 +313,26 @@ fn run_ui_cargo() {
     );
 
     let test_filter = test_filter();
+    let quiet = args.quiet;
 
     ui_test::run_tests_generic(
-        config,
-        |path| test_filter(path) && path.ends_with("Cargo.toml"),
-        |config, path| {
-            let mut config = config.clone();
-            config.out_dir = PathBuf::from("target/ui_test_cargo/").join(path.parent().unwrap());
-            Some(config)
+        vec![config],
+        args,
+        |path, _args, _config| test_filter(path) && path.ends_with("Cargo.toml"),
+        |config, path, _file_contents| {
+            config.out_dir = canonicalize(
+                std::env::current_dir()
+                    .unwrap()
+                    .join("target")
+                    .join("ui_test_cargo/")
+                    .join(path.parent().unwrap()),
+            );
+        },
+        if quiet {
+            status_emitter::Text::quiet()
+        } else {
+            status_emitter::Text::verbose()
         },
-        status_emitter::Text,
     )
     .unwrap();
 }
@@ -328,7 +357,6 @@ fn main() {
             "cargo" => run_ui_cargo as fn(),
             "toml" => run_ui_toml as fn(),
             "internal" => run_internal_tests as fn(),
-            "rustfix-coverage-known-exceptions-accuracy" => rustfix_coverage_known_exceptions_accuracy as fn(),
             "ui-cargo-toml-metadata" => ui_cargo_toml_metadata as fn(),
 
             _ => panic!("unknown speedtest: {speedtest} || accepted speedtests are: [ui, cargo, toml, internal]"),
@@ -355,89 +383,10 @@ fn main() {
         run_ui_toml();
         run_ui_cargo();
         run_internal_tests();
-        rustfix_coverage_known_exceptions_accuracy();
         ui_cargo_toml_metadata();
     }
 }
 
-const RUSTFIX_COVERAGE_KNOWN_EXCEPTIONS: &[&str] = &[
-    "assign_ops2.rs",
-    "borrow_deref_ref_unfixable.rs",
-    "cast_size_32bit.rs",
-    "char_lit_as_u8.rs",
-    "cmp_owned/without_suggestion.rs",
-    "dbg_macro.rs",
-    "deref_addrof_double_trigger.rs",
-    "doc/unbalanced_ticks.rs",
-    "eprint_with_newline.rs",
-    "explicit_counter_loop.rs",
-    "iter_skip_next_unfixable.rs",
-    "let_and_return.rs",
-    "literals.rs",
-    "map_flatten.rs",
-    "map_unwrap_or.rs",
-    "match_bool.rs",
-    "mem_replace_macro.rs",
-    "needless_arbitrary_self_type_unfixable.rs",
-    "needless_borrow_pat.rs",
-    "needless_for_each_unfixable.rs",
-    "nonminimal_bool.rs",
-    "print_literal.rs",
-    "redundant_static_lifetimes_multiple.rs",
-    "ref_binding_to_reference.rs",
-    "repl_uninit.rs",
-    "result_map_unit_fn_unfixable.rs",
-    "search_is_some.rs",
-    "single_component_path_imports_nested_first.rs",
-    "string_add.rs",
-    "suspicious_to_owned.rs",
-    "toplevel_ref_arg_non_rustfix.rs",
-    "unit_arg.rs",
-    "unnecessary_clone.rs",
-    "unnecessary_lazy_eval_unfixable.rs",
-    "write_literal.rs",
-    "write_literal_2.rs",
-];
-
-fn check_rustfix_coverage() {
-    let missing_coverage_path = Path::new("debug/test/ui/rustfix_missing_coverage.txt");
-    let missing_coverage_path = if let Ok(target_dir) = std::env::var("CARGO_TARGET_DIR") {
-        PathBuf::from(target_dir).join(missing_coverage_path)
-    } else {
-        missing_coverage_path.to_path_buf()
-    };
-
-    if let Ok(missing_coverage_contents) = std::fs::read_to_string(missing_coverage_path) {
-        assert!(RUSTFIX_COVERAGE_KNOWN_EXCEPTIONS.iter().is_sorted_by_key(Path::new));
-
-        for rs_file in missing_coverage_contents.lines() {
-            let rs_path = Path::new(rs_file);
-            if rs_path.starts_with("tests/ui/crashes") {
-                continue;
-            }
-            assert!(rs_path.starts_with("tests/ui/"), "{rs_file:?}");
-            let filename = rs_path.strip_prefix("tests/ui/").unwrap();
-            assert!(
-                RUSTFIX_COVERAGE_KNOWN_EXCEPTIONS
-                    .binary_search_by_key(&filename, Path::new)
-                    .is_ok(),
-                "`{rs_file}` runs `MachineApplicable` diagnostics but is missing a `run-rustfix` annotation. \
-                Please either add `//@run-rustfix` at the top of the file or add the file to \
-                `RUSTFIX_COVERAGE_KNOWN_EXCEPTIONS` in `tests/compile-test.rs`.",
-            );
-        }
-    }
-}
-
-fn rustfix_coverage_known_exceptions_accuracy() {
-    for filename in RUSTFIX_COVERAGE_KNOWN_EXCEPTIONS {
-        let rs_path = Path::new("tests/ui").join(filename);
-        assert!(rs_path.exists(), "`{}` does not exist", rs_path.display());
-        let fixed_path = rs_path.with_extension("fixed");
-        assert!(!fixed_path.exists(), "`{}` exists", fixed_path.display());
-    }
-}
-
 fn ui_cargo_toml_metadata() {
     let ui_cargo_path = Path::new("tests/ui-cargo");
     let cargo_common_metadata_path = ui_cargo_path.join("cargo_common_metadata");

diff --git a/tests/headers.rs b/tests/headers.rs
@@ -16,7 +16,7 @@ fn old_test_headers() {
             continue;
         }
 
-        let file = fs::read_to_string(entry.path()).unwrap();
+        let file = fs::read_to_string(entry.path()).unwrap_or_else(|err| panic!("{}: {err}", entry.path().display()));
 
         if let Some(header) = old_headers.find(&file) {
             println!("Found header `{}` in {}", header.as_str(), entry.path().display());

diff --git a/tests/ui-internal/collapsible_span_lint_calls.fixed b/tests/ui-internal/collapsible_span_lint_calls.fixed
@@ -1,4 +1,3 @@
-//@run-rustfix
 #![deny(clippy::internal)]
 #![allow(clippy::missing_clippy_version_attribute)]
 #![feature(rustc_private)]

diff --git a/tests/ui-internal/collapsible_span_lint_calls.rs b/tests/ui-internal/collapsible_span_lint_calls.rs
@@ -1,4 +1,3 @@
-//@run-rustfix
 #![deny(clippy::internal)]
 #![allow(clippy::missing_clippy_version_attribute)]
 #![feature(rustc_private)]