internal: check diagnostics in all files and not just the first one

Author: matklad

crates/ide/src/diagnostics.rs

@@ -341,7 +341,6 @@ fn unresolved_fix(id: &'static str, label: &str, target: TextRange) -> Assist {
 #[cfg(test)]
 mod tests {
     use expect_test::Expect;
-    use hir::diagnostics::DiagnosticCode;
     use ide_assists::AssistResolveStrategy;
     use stdx::trim_indent;
     use test_utils::{assert_eq_text, extract_annotations};
@@ -442,24 +441,24 @@ mod tests {
 
     #[track_caller]
     pub(crate) fn check_diagnostics(ra_fixture: &str) {
-        check_diagnostics_with_inactive_code(ra_fixture, false)
+        let mut config = DiagnosticsConfig::default();
+        config.disabled.insert("inactive-code".to_string());
+        check_diagnostics_with_config(config, ra_fixture)
     }
 
     #[track_caller]
-    pub(crate) fn check_diagnostics_with_inactive_code(ra_fixture: &str, with_inactive_code: bool) {
-        let (analysis, file_id) = fixture::file(ra_fixture);
-        let diagnostics = analysis
-            .diagnostics(&DiagnosticsConfig::default(), AssistResolveStrategy::All, file_id)
-            .unwrap();
-
-        let expected = extract_annotations(&*analysis.file_text(file_id).unwrap());
-        let mut actual = diagnostics
-            .into_iter()
-            .filter(|d| d.code != Some(DiagnosticCode("inactive-code")) || with_inactive_code)
-            .map(|d| (d.range, d.message))
-            .collect::<Vec<_>>();
-        actual.sort_by_key(|(range, _)| range.start());
-        assert_eq!(expected, actual);
+    pub(crate) fn check_diagnostics_with_config(config: DiagnosticsConfig, ra_fixture: &str) {
+        let (analysis, files) = fixture::files(ra_fixture);
+        for file_id in files {
+            let diagnostics =
+                analysis.diagnostics(&config, AssistResolveStrategy::All, file_id).unwrap();
+
+            let expected = extract_annotations(&*analysis.file_text(file_id).unwrap());
+            let mut actual =
+                diagnostics.into_iter().map(|d| (d.range, d.message)).collect::<Vec<_>>();
+            actual.sort_by_key(|(range, _)| range.start());
+            assert_eq!(expected, actual);
+        }
     }
 
     #[test]

crates/ide/src/diagnostics/inactive_code.rs

@@ -37,11 +37,16 @@ pub(super) fn inactive_code(
 
 #[cfg(test)]
 mod tests {
-    use crate::diagnostics::tests::check_diagnostics_with_inactive_code;
+    use crate::{diagnostics::tests::check_diagnostics_with_config, DiagnosticsConfig};
+
+    pub(crate) fn check(ra_fixture: &str) {
+        let config = DiagnosticsConfig::default();
+        check_diagnostics_with_config(config, ra_fixture)
+    }
 
     #[test]
     fn cfg_diagnostics() {
-        check_diagnostics_with_inactive_code(
+        check(
             r#"
 fn f() {
     // The three g̶e̶n̶d̶e̶r̶s̶ statements:
@@ -69,15 +74,14 @@ fn f() {
   //^^^^^^^^^^^ code is inactive due to #[cfg] directives: a is disabled
 }
         "#,
-            true,
         );
     }
 
     #[test]
     fn inactive_item() {
         // Additional tests in `cfg` crate. This only tests disabled cfgs.
 
-        check_diagnostics_with_inactive_code(
+        check(
             r#"
     #[cfg(no)] pub fn f() {}
   //^^^^^^^^^^^^^^^^^^^^^^^^ code is inactive due to #[cfg] directives: no is disabled
@@ -91,15 +95,14 @@ fn f() {
     #[cfg(feature = "std")] use std;
   //^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ code is inactive due to #[cfg] directives: feature = "std" is disabled
 "#,
-            true,
         );
     }
 
     /// Tests that `cfg` attributes behind `cfg_attr` is handled properly.
     #[test]
     fn inactive_via_cfg_attr() {
         cov_mark::check!(cfg_attr_active);
-        check_diagnostics_with_inactive_code(
+        check(
             r#"
     #[cfg_attr(not(never), cfg(no))] fn f() {}
   //^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ code is inactive due to #[cfg] directives: no is disabled
@@ -111,7 +114,6 @@ fn f() {
     #[cfg_attr(not(never), inline, cfg(no))] fn h() {}
   //^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ code is inactive due to #[cfg] directives: no is disabled
 "#,
-            true,
         );
     }
 }

crates/ide/src/diagnostics/macro_error.rs

@@ -14,7 +14,12 @@ pub(super) fn macro_error(ctx: &DiagnosticsContext<'_>, d: &hir::MacroError) ->
 
 #[cfg(test)]
 mod tests {
-    use crate::diagnostics::tests::{check_diagnostics, check_no_diagnostics};
+    use crate::{
+        diagnostics::tests::{
+            check_diagnostics, check_diagnostics_with_config, check_no_diagnostics,
+        },
+        DiagnosticsConfig,
+    };
 
     #[test]
     fn builtin_macro_fails_expansion() {
@@ -31,7 +36,14 @@ macro_rules! include { () => {} }
 
     #[test]
     fn include_macro_should_allow_empty_content() {
-        check_diagnostics(
+        let mut config = DiagnosticsConfig::default();
+
+        // FIXME: This is a false-positive, the file is actually linked in via
+        // `include!` macro
+        config.disabled.insert("unlinked-file".to_string());
+
+        check_diagnostics_with_config(
+            config,
             r#"
 //- /lib.rs
 #[rustc_builtin_macro]

crates/ide/src/fixture.rs

@@ -1,6 +1,5 @@
 //! Utilities for creating `Analysis` instances for tests.
 use ide_db::base_db::fixture::ChangeFixture;
-use syntax::{TextRange, TextSize};
 use test_utils::extract_annotations;
 
 use crate::{Analysis, AnalysisHost, FileId, FilePosition, FileRange};
@@ -63,15 +62,8 @@ pub(crate) fn annotations(ra_fixture: &str) -> (Analysis, FilePosition, Vec<(Fil
 
 pub(crate) fn nav_target_annotation(ra_fixture: &str) -> (Analysis, FilePosition, FileRange) {
     let (analysis, position, mut annotations) = annotations(ra_fixture);
-    let (mut expected, data) = annotations.pop().unwrap();
+    let (expected, data) = annotations.pop().unwrap();
     assert!(annotations.is_empty());
-    match data.as_str() {
-        "" => (),
-        "file" => {
-            expected.range =
-                TextRange::up_to(TextSize::of(&*analysis.file_text(expected.file_id).unwrap()))
-        }
-        data => panic!("bad data: {}", data),
-    }
+    assert_eq!(data, "");
     (analysis, position, expected)
 }

crates/ide/src/goto_definition.rs

@@ -185,7 +185,7 @@ mod tests {
 extern crate std$0;
 //- /std/lib.rs crate:std
 // empty
-//^ file
+//^file
 "#,
         )
     }
@@ -198,7 +198,7 @@ extern crate std$0;
 extern crate std as abc$0;
 //- /std/lib.rs crate:std
 // empty
-//^ file
+//^file
 "#,
         )
     }
@@ -253,7 +253,7 @@ mod $0foo;
 
 //- /foo.rs
 // empty
-//^ file
+//^file
 "#,
         );
 
@@ -264,7 +264,7 @@ mod $0foo;
 
 //- /foo/mod.rs
 // empty
-//^ file
+//^file
 "#,
         );
     }
@@ -395,7 +395,7 @@ use foo as bar$0;
 
 //- /foo/lib.rs crate:foo
 // empty
-//^ file
+//^file
 "#,
         );
     }
@@ -1287,7 +1287,7 @@ fn main() {
 }
 //- /foo.txt
 // empty
-//^ file
+//^file
 "#,
         );
     }

crates/test_utils/src/lib.rs

@@ -190,10 +190,21 @@ pub fn add_cursor(text: &str, offset: TextSize) -> String {
     res
 }
 
-/// Extracts `//^ some text` annotations
+/// Extracts `//^^^ some text` annotations.
+///
+/// A run of `^^^` can be arbitrary long and points to the corresponding range
+/// in the line above.
+///
+/// The `// ^file text` syntax can be used to attach `text` to the entirety of
+/// the file.
+///
+/// Multiline string values are supported:
+///
+/// // ^^^ first line
+/// //   | second line
 pub fn extract_annotations(text: &str) -> Vec<(TextRange, String)> {
     let mut res = Vec::new();
-    let mut prev_line_start: Option<TextSize> = None;
+    let mut prev_line_start: Option<TextSize> = Some(0.into());
     let mut line_start: TextSize = 0.into();
     let mut prev_line_annotations: Vec<(TextSize, usize)> = Vec::new();
     for line in text.split_inclusive('\n') {
@@ -202,10 +213,15 @@ pub fn extract_annotations(text: &str) -> Vec<(TextRange, String)> {
             let annotation_offset = TextSize::of(&line[..idx + "//".len()]);
             for annotation in extract_line_annotations(&line[idx + "//".len()..]) {
                 match annotation {
-                    LineAnnotation::Annotation { mut range, content } => {
+                    LineAnnotation::Annotation { mut range, content, file } => {
                         range += annotation_offset;
                         this_line_annotations.push((range.end(), res.len()));
-                        res.push((range + prev_line_start.unwrap(), content))
+                        let range = if file {
+                            TextRange::up_to(TextSize::of(text))
+                        } else {
+                            range + prev_line_start.unwrap()
+                        };
+                        res.push((range, content))
                     }
                     LineAnnotation::Continuation { mut offset, content } => {
                         offset += annotation_offset;
@@ -226,11 +242,12 @@ pub fn extract_annotations(text: &str) -> Vec<(TextRange, String)> {
 
         prev_line_annotations = this_line_annotations;
     }
+
     res
 }
 
 enum LineAnnotation {
-    Annotation { range: TextRange, content: String },
+    Annotation { range: TextRange, content: String, file: bool },
     Continuation { offset: TextSize, content: String },
 }
 
@@ -251,12 +268,20 @@ fn extract_line_annotations(mut line: &str) -> Vec<LineAnnotation> {
         }
         let range = TextRange::at(offset, len.try_into().unwrap());
         let next = line[len..].find(marker).map_or(line.len(), |it| it + len);
-        let content = line[len..][..next - len].trim().to_string();
+        let mut content = &line[len..][..next - len];
+
+        let mut file = false;
+        if !continuation && content.starts_with("file") {
+            file = true;
+            content = &content["file".len()..]
+        }
+
+        let content = content.trim().to_string();
 
         let annotation = if continuation {
             LineAnnotation::Continuation { offset: range.end(), content }
         } else {
-            LineAnnotation::Annotation { range, content }
+            LineAnnotation::Annotation { range, content, file }
         };
         res.push(annotation);
 
@@ -277,16 +302,20 @@ fn main() {
     zoo + 1
 } //^^^ type:
   //  | i32
+
+// ^file
     "#,
     );
     let res = extract_annotations(&text)
         .into_iter()
         .map(|(range, ann)| (&text[range], ann))
         .collect::<Vec<_>>();
+
     assert_eq!(
-        res,
-        vec![("x", "def".into()), ("y", "def".into()), ("zoo", "type:\ni32\n".into()),]
+        res[..3],
+        [("x", "def".into()), ("y", "def".into()), ("zoo", "type:\ni32\n".into())]
     );
+    assert_eq!(res[3].0.len(), 115);
 }
 
 /// Returns `false` if slow tests should not run, otherwise returns `true` and