chore: setup jest for use with Typescript tests (#106)

* chore: add ts-jest and dependencies

* chore: expand tsconfig to `test` directory

* chore: add jest config and script to run Typescript tests

* chore: improve import sort linting autogrouping

* tests: convert submission.server.model tests to Typescript

* chore: add jest-mongodb present to jest setup

This allows for use of mongodb without any setting up or tearing down of mongodb between tests

* test: migrate myinfo service test to Typescript

* feat: remove usage of spec in db-handler

* build: add specific tsconfig for building that ignores tests

* chore: add jest-mongodb-config and migrate SmsCountModel tests

With this, we can eventually stop using `npm run download-binary` and delete `tests/end-to-end/helpers/get-mongo-binary.js` since the config automatically retrieves that information for us.

* chore: add documentation to gitignore

* fix: check mongoose MD5 binary when starting jest tests

* refactor: convert form_fields schema tests to Typescript

.eslintrc.js

@@ -26,7 +26,25 @@ module.exports = {
       plugins: ['@typescript-eslint', 'import', 'simple-import-sort'],
       rules: {
         // Rules for auto sort of imports
-        'simple-import-sort/sort': 'error',
+        'simple-import-sort/sort': [
+          'error',
+          {
+            groups: [
+              // Side effect imports.
+              ['^\\u0000'],
+              // Packages.
+              // Things that start with a letter (or digit or underscore), or
+              // `@` followed by a letter.
+              ['^@?\\w'],
+              // Root imports
+              ['^(src)(/.*|$)'],
+              // Parent imports. Put `..` last.
+              ['^\\.\\.(?!/?$)', '^\\.\\./?$'],
+              // Other relative imports. Put same-folder imports and `.` last.
+              ['^\\./(?=.*/)(?!/?$)', '^\\.(?!/?$)', '^\\./?$'],
+            ],
+          },
+        ],
         'sort-imports': 'off',
         'import/order': 'off',
         'import/first': 'error',

.gitignore

@@ -53,4 +53,9 @@ tmp/
 !.elasticbeanstalk/*.global.yml
 
 # Localstack
+# =======
 .localstack
+
+# @shelf/jest-mongodb generated file
+# =======
+globalConfig.json

jest-mongodb-config.js

@@ -0,0 +1,12 @@
+module.exports = {
+  mongodbMemoryServerOptions: {
+    binary: {
+      version: process.env.MONGO_BINARY_VERSION || '3.6.12',
+      checkMD5: true,
+    },
+    instance: {
+      dbName: 'jest',
+    },
+    autoStart: false,
+  },
+}

jest.config.js

@@ -0,0 +1,12 @@
+const { defaults: tsJestPreset } = require('ts-jest/presets')
+
+module.exports = {
+  preset: '@shelf/jest-mongodb',
+  testEnvironment: 'node',
+  testMatch: ['**/?(*.)+(spec|test).[t]s?(x)'],
+  modulePaths: ['<rootDir>'],
+  transform: {
+    // Needed to use @shelf/jest-mongodb preset.
+    ...tsJestPreset.transform,
+  },
+}