improve LSP tests (#3510)

- mockfs strategy
- move parseDocument tests to their own file
- config failure/lifecycle tests

Author: acao

.vscode/settings.json

@@ -1,5 +1,15 @@
 {
   "npm.packageManager": "yarn",
   "editor.formatOnSave": true,
-  "files.insertFinalNewline": true
+  "files.insertFinalNewline": true,
+  "editor.trimAutoWhitespace": false,
+  "coverage-gutters.showLineCoverage": true,
+  "coverage-gutters.coverageBaseDir": "coverage",
+  "coverage-gutters.coverageFileNames": [
+    "lcov.info",
+    "cov.xml",
+    "coverage.xml",
+    "jacoco.xml",
+    "coverage.cobertura.xml"
+  ]
 }

custom-words.txt

@@ -83,6 +83,8 @@ intellij
 jsdelivr
 lezer
 manypkg
+modulemap
+mockfs
 meros
 nullthrows
 onig
@@ -131,7 +133,6 @@ listvalues
 marko
 matchingbracket
 middlewares
-modulemap
 newhope
 nextjs
 nocheck

packages/graphql-language-service-server/package.json

@@ -64,6 +64,7 @@
     "@types/glob": "^8.1.0",
     "@types/mkdirp": "^1.0.1",
     "cross-env": "^7.0.2",
-    "graphql": "^16.8.1"
+    "graphql": "^16.8.1",
+    "mock-fs": "^5.2.0"
   }
 }

packages/graphql-language-service-server/src/MessageProcessor.ts

@@ -212,14 +212,18 @@ export class MessageProcessor {
     const settings = await this._connection.workspace.getConfiguration({
       section: 'graphql-config',
     });
+
     const vscodeSettings = await this._connection.workspace.getConfiguration({
       section: 'vscode-graphql',
     });
     if (settings?.dotEnvPath) {
       require('dotenv').config({ path: settings.dotEnvPath });
     }
     this._settings = { ...settings, ...vscodeSettings };
-    const rootDir = this._settings?.load?.rootDir || this._rootPath;
+    const rootDir =
+      this._settings?.load?.rootDir ??
+      this._loadConfigOptions?.rootDir ??
+      this._rootPath;
     this._rootPath = rootDir;
     this._loadConfigOptions = {
       ...Object.keys(this._settings?.load ?? {}).reduce((agg, key) => {
@@ -243,9 +247,9 @@ export class MessageProcessor {
         this._graphQLCache,
         this._logger,
       );
-      if (this._graphQLConfig || this._graphQLCache?.getGraphQLConfig) {
-        const config =
-          this._graphQLConfig ?? this._graphQLCache.getGraphQLConfig();
+      if (this._graphQLCache?.getGraphQLConfig()) {
+        const config = (this._graphQLConfig =
+          this._graphQLCache.getGraphQLConfig());
         await this._cacheAllProjectFiles(config);
       }
       this._isInitialized = true;
@@ -254,6 +258,7 @@ export class MessageProcessor {
     }
   }
   _handleConfigError({ err }: { err: unknown; uri?: string }) {
+    // console.log(err, typeof err);
     if (err instanceof ConfigNotFoundError || err instanceof ConfigEmptyError) {
       // TODO: obviously this needs to become a map by workspace from uri
       // for workspaces support
@@ -303,9 +308,9 @@ export class MessageProcessor {
       if (!this._isInitialized || !this._graphQLCache) {
         // don't try to initialize again if we've already tried
         // and the graphql config file or package.json entry isn't even there
-        if (this._isGraphQLConfigMissing === true) {
-          return null;
-        }
+        // if (this._isGraphQLConfigMissing === true) {
+        //   return null;
+        // }
         // then initial call to update graphql config
         await this._updateGraphQLConfig();
       }