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|
//! FIXME: write short doc here
use hir::Semantics;
use itertools::Itertools;
use ra_ide_db::RootDatabase;
use ra_syntax::{
ast::{self, AstNode, AttrsOwner, ModuleItemOwner, NameOwner},
match_ast, SyntaxNode, TextRange,
};
use crate::FileId;
use std::fmt::Display;
#[derive(Debug)]
pub struct Runnable {
pub range: TextRange,
pub kind: RunnableKind,
}
#[derive(Debug)]
pub enum TestId {
Name(String),
Path(String),
}
impl Display for TestId {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
match self {
TestId::Name(name) => write!(f, "{}", name),
TestId::Path(path) => write!(f, "{}", path),
}
}
}
#[derive(Debug)]
pub enum RunnableKind {
Test { test_id: TestId },
TestMod { path: String },
Bench { test_id: TestId },
Bin,
}
pub(crate) fn runnables(db: &RootDatabase, file_id: FileId) -> Vec<Runnable> {
let sema = Semantics::new(db);
let source_file = sema.parse(file_id);
source_file.syntax().descendants().filter_map(|i| runnable(&sema, i)).collect()
}
fn runnable(sema: &Semantics<RootDatabase>, item: SyntaxNode) -> Option<Runnable> {
match_ast! {
match item {
ast::FnDef(it) => { runnable_fn(sema, it) },
ast::Module(it) => { runnable_mod(sema, it) },
_ => None,
}
}
}
fn runnable_fn(sema: &Semantics<RootDatabase>, fn_def: ast::FnDef) -> Option<Runnable> {
let name_string = fn_def.name()?.text().to_string();
let kind = if name_string == "main" {
RunnableKind::Bin
} else {
let test_id = if let Some(module) = sema.to_def(&fn_def).map(|def| def.module(sema.db)) {
let path = module
.path_to_root(sema.db)
.into_iter()
.rev()
.filter_map(|it| it.name(sema.db))
.map(|name| name.to_string())
.chain(std::iter::once(name_string))
.join("::");
TestId::Path(path)
} else {
TestId::Name(name_string)
};
if has_test_related_attribute(&fn_def) {
RunnableKind::Test { test_id }
} else if fn_def.has_atom_attr("bench") {
RunnableKind::Bench { test_id }
} else {
return None;
}
};
Some(Runnable { range: fn_def.syntax().text_range(), kind })
}
/// This is a method with a heuristics to support test methods annotated with custom test annotations, such as
/// `#[test_case(...)]`, `#[tokio::test]` and similar.
/// Also a regular `#[test]` annotation is supported.
///
/// It may produce false positives, for example, `#[wasm_bindgen_test]` requires a different command to run the test,
/// but it's better than not to have the runnables for the tests at all.
fn has_test_related_attribute(fn_def: &ast::FnDef) -> bool {
fn_def
.attrs()
.filter_map(|attr| attr.path())
.map(|path| path.syntax().to_string().to_lowercase())
.any(|attribute_text| attribute_text.contains("test"))
}
fn runnable_mod(sema: &Semantics<RootDatabase>, module: ast::Module) -> Option<Runnable> {
let has_test_function = module
.item_list()?
.items()
.filter_map(|it| match it {
ast::ModuleItem::FnDef(it) => Some(it),
_ => None,
})
.any(|f| has_test_related_attribute(&f));
if !has_test_function {
return None;
}
let range = module.syntax().text_range();
let module = sema.to_def(&module)?;
let path =
module.path_to_root(sema.db).into_iter().rev().filter_map(|it| it.name(sema.db)).join("::");
Some(Runnable { range, kind: RunnableKind::TestMod { path } })
}
#[cfg(test)]
mod tests {
use insta::assert_debug_snapshot;
use crate::mock_analysis::analysis_and_position;
#[test]
fn test_runnables() {
let (analysis, pos) = analysis_and_position(
r#"
//- /lib.rs
<|> //empty
fn main() {}
#[test]
fn test_foo() {}
#[test]
#[ignore]
fn test_foo() {}
"#,
);
let runnables = analysis.runnables(pos.file_id).unwrap();
assert_debug_snapshot!(&runnables,
@r###"
[
Runnable {
range: [1; 21),
kind: Bin,
},
Runnable {
range: [22; 46),
kind: Test {
test_id: Path(
"test_foo",
),
},
},
Runnable {
range: [47; 81),
kind: Test {
test_id: Path(
"test_foo",
),
},
},
]
"###
);
}
#[test]
fn test_runnables_module() {
let (analysis, pos) = analysis_and_position(
r#"
//- /lib.rs
<|> //empty
mod test_mod {
#[test]
fn test_foo1() {}
}
"#,
);
let runnables = analysis.runnables(pos.file_id).unwrap();
assert_debug_snapshot!(&runnables,
@r###"
[
Runnable {
range: [1; 59),
kind: TestMod {
path: "test_mod",
},
},
Runnable {
range: [28; 57),
kind: Test {
test_id: Path(
"test_mod::test_foo1",
),
},
},
]
"###
);
}
#[test]
fn test_runnables_one_depth_layer_module() {
let (analysis, pos) = analysis_and_position(
r#"
//- /lib.rs
<|> //empty
mod foo {
mod test_mod {
#[test]
fn test_foo1() {}
}
}
"#,
);
let runnables = analysis.runnables(pos.file_id).unwrap();
assert_debug_snapshot!(&runnables,
@r###"
[
Runnable {
range: [23; 85),
kind: TestMod {
path: "foo::test_mod",
},
},
Runnable {
range: [46; 79),
kind: Test {
test_id: Path(
"foo::test_mod::test_foo1",
),
},
},
]
"###
);
}
#[test]
fn test_runnables_multiple_depth_module() {
let (analysis, pos) = analysis_and_position(
r#"
//- /lib.rs
<|> //empty
mod foo {
mod bar {
mod test_mod {
#[test]
fn test_foo1() {}
}
}
}
"#,
);
let runnables = analysis.runnables(pos.file_id).unwrap();
assert_debug_snapshot!(&runnables,
@r###"
[
Runnable {
range: [41; 115),
kind: TestMod {
path: "foo::bar::test_mod",
},
},
Runnable {
range: [68; 105),
kind: Test {
test_id: Path(
"foo::bar::test_mod::test_foo1",
),
},
},
]
"###
);
}
#[test]
fn test_runnables_no_test_function_in_module() {
let (analysis, pos) = analysis_and_position(
r#"
//- /lib.rs
<|> //empty
mod test_mod {
fn foo1() {}
}
"#,
);
let runnables = analysis.runnables(pos.file_id).unwrap();
assert!(runnables.is_empty())
}
}
|
