Updating tests (#723)

* updating tests. This update gets our testing framework closer to what's needed when prettier v3 releases so changes when we start supporting v3 will be minimal.

* latest changes from prettier next

* adding the new dependencies preparing for prettier v3 and making sure they run with v2

* making sure to await the `expect` call

Author: Janther

.c8rc

@@ -0,0 +1,11 @@
+{
+  "check-coverage": true,
+  "branches": 99,
+  "lines": 100,
+  "functions": 100,
+  "statements": 100,
+  "exclude": ["/node_modules/", "/scripts/", "/src/prettier-comments/"],
+  "include": ["src/**/*.js", "!src/prettier-comments/**/*.js"],
+  "reporter": ["lcov", "text"],
+  "temp-dir": "./coverage/"
+}

jest.config.js

@@ -1,37 +1,22 @@
-const FULL_TEST = Boolean(process.env.FULL_TEST);
 const TEST_STANDALONE = Boolean(process.env.TEST_STANDALONE);
 
 module.exports = {
-  collectCoverage: FULL_TEST,
-  collectCoverageFrom: [
-    'scripts/**/*.js',
-    '!scripts/generateIndexes.js',
-    'src/**/*.js',
-    '!<rootDir>/node_modules/',
-    '!src/prettier-comments/**/*.js'
-  ],
-  coverageDirectory: './coverage/',
-  coveragePathIgnorePatterns: ['/node_modules/', '/scripts/'],
-  coverageThreshold: {
-    global: {
-      branches: 100,
-      functions: 100,
-      lines: 100,
-      statements: 100
-    }
-  },
   moduleNameMapper: {
     '^prettier$': TEST_STANDALONE
       ? '<rootDir>/node_modules/prettier/standalone'
       : '<rootDir>/node_modules/prettier'
   },
+  runner: 'jest-light-runner',
   setupFiles: ['<rootDir>/tests/config/setup.js'],
   snapshotSerializers: [
     'jest-snapshot-serializer-raw',
     'jest-snapshot-serializer-ansi'
   ],
   testEnvironment: 'node',
-  testRegex: 'jsfmt\\.spec\\.js$|tests/unit/.*\\.js$',
+  testMatch: [
+    '<rootDir>/tests/format/**/jsfmt.spec.js',
+    '<rootDir>/tests/unit/**/*.js'
+  ],
   transform: {},
   watchPlugins: [
     'jest-watch-typeahead/filename',