test(els): add ELS test suites

crates/els/Cargo.toml

@@ -27,6 +27,9 @@ serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0.85"
 lsp-types = { version = "0.93.2", features = ["proposed"] }
 
+[dev-dependencies]
+gag = "1"
+
 [lib]
 path = "lib.rs"
 

crates/els/file_cache.rs

@@ -46,7 +46,7 @@ impl FileCacheEntry {
 
 /// Stores the contents of the file on-memory.
 /// This struct can save changes in real-time & incrementally.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Default)]
 pub struct FileCache {
     pub files: Shared<Dict<NormalizedUrl, FileCacheEntry>>,
 }

crates/els/lib.rs

@@ -18,3 +18,4 @@ mod server;
 mod sig_help;
 mod util;
 pub use server::*;
+pub use util::*;

crates/els/server.rs

@@ -197,7 +197,7 @@ impl AnalysisResult {
     }
 }
 
-pub(crate) const TRIGGER_CHARS: [&str; 4] = [".", ":", "(", " "];
+pub const TRIGGER_CHARS: [&str; 4] = [".", ":", "(", " "];
 
 #[derive(Debug, Clone, Default)]
 pub struct AnalysisResultCache(Shared<Dict<NormalizedUrl, AnalysisResult>>);
@@ -664,7 +664,7 @@ impl<Checker: BuildRunnable, Parser: Parsable> Server<Checker, Parser> {
         Ok(Value::from_str(&s)?)
     }
 
-    fn dispatch(&mut self, msg: Value) -> ELSResult<()> {
+    pub fn dispatch(&mut self, msg: Value) -> ELSResult<()> {
         match (
             msg.get("id").and_then(|i| i.as_i64()),
             msg.get("method").and_then(|m| m.as_str()),

crates/els/tests/a.er

@@ -0,0 +1,2 @@
+x = 1
+_ = x + 1