Switch from jest to vitest 🚀 (#4628)

.github/workflows/ci.yml

@@ -2,7 +2,7 @@ name: Continuous Integration
 on: [push, pull_request]
 
 jobs:
-    # Checks for prettify errors, TypeScript errors and runs Jest tests.
+    # Checks for prettify errors, TypeScript errors and runs vitest tests.
     testdbcheck:
         runs-on: ubuntu-latest
 
@@ -35,11 +35,8 @@ jobs:
             - name: Run tsc build
               run: yarn buildTsc
 
-            - name: Run tsc buildTests
-              run: yarn lerna run buildTests
-
-            - name: Run jest
-              run: yarn testJest
+            - name: Run vitest
+              run: yarn test
 
     eslint:
         runs-on: ubuntu-latest

.vscode/extensions.json

@@ -2,6 +2,7 @@
     "recommendations": [
         "esbenp.prettier-vscode",
         "dbaeumer.vscode-eslint",
-        "editorconfig.editorconfig"
+        "editorconfig.editorconfig",
+        "vitest.explorer"
     ]
 }

.vscode/launch.json

@@ -4,37 +4,6 @@
     // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
     "version": "0.2.0",
     "configurations": [
-        {
-            "args": [],
-            "internalConsoleOptions": "openOnSessionStart",
-            "name": "Jest Tests",
-            "program": "${workspaceFolder}/node_modules/jest/bin/jest.js",
-            "request": "launch",
-            "skipFiles": [
-                "<node_internals>/**"
-            ],
-            "skipFiles": [
-                "<node_internals>/**"
-            ],
-            "type": "node"
-        },
-        {
-            //somewhat unstable, WIP
-            "type": "node",
-            "request": "launch",
-            "name": "Jest Test current file",
-            "program": "${workspaceFolder}/node_modules/.bin/jest",
-            "args": [
-                "${fileBasenameNoExtension}.js",
-                "--watch"
-            ],
-            "args": [
-                "${fileBasenameNoExtension}.js",
-                "--watch"
-            ],
-            "console": "integratedTerminal"
-            // "internalConsoleOptions": "neverOpen"
-        },
         {
             "name": "Launch site dev",
             "program": "${workspaceFolder}/itsJustJavascript/adminSiteServer/app.js",

Makefile

@@ -224,19 +224,14 @@ tmp-downloads/owid_metadata.sql.gz:
 test: node_modules
 	@echo '==> Linting'
 	yarn run eslint
-	yarn lerna run build
-	yarn lerna run buildTests
 
 	@echo '==> Checking formatting'
 	yarn testPrettierAll
 
 	@echo '==> Running tests'
-	yarn run jest
+	yarn run test
 
 dbtest: node_modules
-	@echo '==> Building'
-	yarn buildTsc
-
 	@echo '==> Running db test script'
 	./db/tests/run-db-tests.sh
 
@@ -254,7 +249,7 @@ format: node_modules
 
 unittest: node_modules
 	@echo '==> Running tests'
-	yarn run jest --all
+	yarn run test
 
 ../owid-grapher-svgs:
 	cd .. && git clone [email protected]:owid/owid-grapher-svgs

adminShared/SqlFilterSExpression.test.ts

@@ -1,4 +1,4 @@
-#! /usr/bin/env jest
+import { expect, it, describe } from "vitest"
 import { variableAnnotationAllowedColumnNamesAndTypes } from "./AdminSessionTypes.js"
 import {
     parseToOperation,

adminShared/patchHelper.test.ts

@@ -1,4 +1,4 @@
-#! /usr/bin/env jest
+import { expect, it } from "vitest"
 
 import { setValueRecursive, setValueRecursiveInplace } from "./patchHelper.js"
 

adminSiteClient/instrument.ts

@@ -5,8 +5,10 @@ import {
     SENTRY_ADMIN_DSN,
 } from "../settings/clientSettings.js"
 
-Sentry.init({
-    dsn: SENTRY_ADMIN_DSN,
-    environment: ENV,
-    release: COMMIT_SHA,
-})
+if (!process.env.VITEST) {
+    Sentry.init({
+        dsn: SENTRY_ADMIN_DSN,
+        environment: ENV,
+        release: COMMIT_SHA,
+    })
+}