darman
f71a347061
Adds the DiagnosticsSource seam trait in harness-core::lsp (kept out of harness-tools so tools never link the LSP crate directly), and implements it in harness-lsp as a pool that lazily spawns one language server per file extension (rust-analyzer, typescript-language-server, gopls, pyright-langserver) only when the binary is on PATH. Adds harness-tools::diagnostics and wires diagnostics into edit/write/bash/glob/grep output.
35 lines
1.4 KiB
Rust
35 lines
1.4 KiB
Rust
//! End-to-end LSP test against a real `rust-analyzer`. Ignored by default (requires the binary
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//! on PATH and is slow — RA indexes the project). Run with:
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//! cargo test -p harness-lsp --test rust_analyzer -- --ignored --nocapture
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use std::time::Duration;
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use harness_core::lsp::{DiagnosticsSource, Severity};
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use harness_lsp::LspPool;
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#[tokio::test]
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#[ignore = "requires rust-analyzer on PATH; slow"]
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async fn rust_analyzer_reports_a_type_error() {
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// Minimal cargo project with a deliberate type error.
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let dir = tempfile::tempdir().unwrap();
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std::fs::write(
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dir.path().join("Cargo.toml"),
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"[package]\nname = \"probe\"\nversion = \"0.1.0\"\nedition = \"2021\"\n",
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)
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.unwrap();
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std::fs::create_dir_all(dir.path().join("src")).unwrap();
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let main_rs = dir.path().join("src/main.rs");
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std::fs::write(&main_rs, "fn main() {\n let x: i32 = \"not an integer\";\n let _ = x;\n}\n").unwrap();
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let pool = LspPool::new(dir.path().to_path_buf(), vec![]);
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pool.touch(&main_rs).await;
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// Generous wait: rust-analyzer must index the workspace before it reports anything.
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let diags = pool.diagnostics(&main_rs, Duration::from_secs(60)).await;
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println!("diagnostics: {diags:#?}");
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assert!(
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diags.iter().any(|d| d.severity == Severity::Error),
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"expected at least one error diagnostic, got: {diags:?}"
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);
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}
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