Use Vitest to have individual snapshot files

Author: nojaf

tests/analysis_new_tests/tests/package.json

@@ -5,11 +5,14 @@
   "scripts": {
     "build": "rescript",
     "clean": "rescript clean -with-deps",
-    "test": "yarn build && node test.js",
-    "test:update": "node --test-update-snapshots test.js"
+    "test": "yarn build && vitest run test.js",
+    "test:update": "vitest run -u test.js"
   },
   "dependencies": {
     "@rescript/react": "link:../../dependencies/rescript-react",
     "rescript": "workspace:^"
+  },
+  "devDependencies": {
+    "vitest": "3.1.2"
   }
 }

tests/analysis_new_tests/tests/test.js renamed to tests/analysis_new_tests/tests/snapshots.test.js

@@ -1,4 +1,4 @@
-import { test } from "node:test";
+import { test, expect } from "vitest";
 import fs from "node:fs/promises";
 import path from "node:path";
 import { glob } from "glob";
@@ -116,7 +116,7 @@ await Promise.all(
 resFiles.forEach((file) => {
   const blockData = testBlocksPerFile.get(file.relativePath);
   for (const block of blockData) {
-    test(`${file.relativePath} - ${block.description}`, async (t) => {
+    test(`${file.relativePath} - ${block.description}`, async () => {
       // Run rescript-editor-analysis and capture output
       const analysisOutput = await new Promise((resolve, reject) => {
         const analysisCmd = spawn(
@@ -153,7 +153,14 @@ resFiles.forEach((file) => {
         });
       });
 
-      t.assert.snapshot(analysisOutput.stdout);
+      // Construct snapshot path
+      const snapshotDir = path.join(testFilesDir, "__snapshots__");
+      await fs.mkdir(snapshotDir, { recursive: true }); // Ensure snapshot dir exists
+      const snapshotFileName = `${file.relativePath}_${block.description.replace(/\\s+/g, "_")}.snap`;
+      const snapshotPath = path.join(snapshotDir, snapshotFileName);
+
+      // Use Vitest's expect().toMatchFileSnapshot()
+      await expect(analysisOutput.stdout).toMatchFileSnapshot(snapshotPath);
     });
   }
 });

tests/analysis_new_tests/tests/test.js.snapshot

@@ -0,0 +1,18 @@
+Complete /Users/nojaf/Projects/rescript/tests/analysis_new_tests/tests/test_files/.build/RecordFieldCompletions_2.res 1:45
+posCursor:[1:45] posNoWhite:[1:44] Found expr:[1:8->1:45]
+Package opens Stdlib.place holder Pervasives.JsxModules.place holder
+Resolved opens 1 Stdlib
+[{
+    "label": "name",
+    "kind": 5,
+    "tags": [],
+    "detail": "string",
+    "documentation": {"kind": "markdown", "value": "```rescript\nname: string\n```\n\n```rescript\ntype \\\"nestedTestRecord.nested\" = {\n  name: string,\n  oneMoreLevel: {here: bool},\n}\n```"}
+  }, {
+    "label": "oneMoreLevel",
+    "kind": 5,
+    "tags": [],
+    "detail": "\\\"nestedTestRecord.nested.oneMoreLevel\"",
+    "documentation": {"kind": "markdown", "value": "```rescript\noneMoreLevel: \\\"nestedTestRecord.nested.oneMoreLevel\"\n```\n\n```rescript\ntype \\\"nestedTestRecord.nested\" = {\n  name: string,\n  oneMoreLevel: {here: bool},\n}\n```"}
+  }]
+

tests/analysis_new_tests/tests/test_files/__snapshots__/RecordFieldCompletions.res_Record field completion in nested record, another level.snap

@@ -0,0 +1,18 @@
+Complete /Users/nojaf/Projects/rescript/tests/analysis_new_tests/tests/test_files/.build/RecordFieldCompletions_1.res 1:38
+posCursor:[1:38] posNoWhite:[1:37] Found expr:[1:8->1:38]
+Package opens Stdlib.place holder Pervasives.JsxModules.place holder
+Resolved opens 1 Stdlib
+[{
+    "label": "test",
+    "kind": 5,
+    "tags": [],
+    "detail": "bool",
+    "documentation": {"kind": "markdown", "value": "```rescript\ntest: bool\n```\n\n```rescript\ntype nestedTestRecord = {\n  test: bool,\n  nested: {name: string, oneMoreLevel: {here: bool}},\n}\n```"}
+  }, {
+    "label": "nested",
+    "kind": 5,
+    "tags": [],
+    "detail": "\\\"nestedTestRecord.nested\"",
+    "documentation": {"kind": "markdown", "value": "```rescript\nnested: \\\"nestedTestRecord.nested\"\n```\n\n```rescript\ntype nestedTestRecord = {\n  test: bool,\n  nested: {name: string, oneMoreLevel: {here: bool}},\n}\n```"}
+  }]
+