Standardize filenames: jest-runtime pkg (#7502)

* renamed 'run_test.js' to 'runTest.js' and updated imports

* renamed 'test_worker.js' to 'testWorker.js' and updated imports

* added PR to CHANGELOG

* renamed test_runner.test.js to testRunner.test.js

* Consolidated this PR to generic point with other file renames

* Changed filenames for ScriptTransformer.js, shouldInstrument.js and refs

packages/jest-runtime/src/script_transformer.js → packages/jest-runtime/src/ScriptTransformer.js

@@ -27,7 +27,7 @@ import HasteMap from 'jest-haste-map';
 import stableStringify from 'fast-json-stable-stringify';
 import slash from 'slash';
 import {version as VERSION} from '../package.json';
-import shouldInstrument from './should_instrument';
+import shouldInstrument from './shouldInstrument';
 import writeFileAtomic from 'write-file-atomic';
 import {sync as realpath} from 'realpath-native';
 import {enhanceUnexpectedTokenMessage} from './helpers';

packages/jest-runtime/src/__tests__/instrumentation.test.js

@@ -11,7 +11,7 @@
 import vm from 'vm';
 import path from 'path';
 import os from 'os';
-import ScriptTransformer from '../script_transformer';
+import ScriptTransformer from '../ScriptTransformer';
 
 jest.mock('vm');
 

packages/jest-runtime/src/__tests__/script_transformer.test.js

@@ -193,11 +193,11 @@ describe('ScriptTransformer', () => {
       transformIgnorePatterns: ['/node_modules/'],
     };
 
-    ScriptTransformer = require('../script_transformer').default;
+    ScriptTransformer = require('../ScriptTransformer').default;
   };
 
   beforeEach(reset);
-  afterEach(() => jest.unmock('../should_instrument'));
+  afterEach(() => jest.unmock('../shouldInstrument'));
 
   it('transforms a file properly', () => {
     const scriptTransformer = new ScriptTransformer(config);
@@ -241,9 +241,9 @@ describe('ScriptTransformer', () => {
   });
 
   it('does not transform Node core modules', () => {
-    jest.mock('../should_instrument');
+    jest.mock('../shouldInstrument');
 
-    const shouldInstrument = require('../should_instrument').default;
+    const shouldInstrument = require('../shouldInstrument').default;
     const scriptTransformer = new ScriptTransformer(config);
     const fsSourceCode = process.binding('natives').fs;
 

packages/jest-runtime/src/__tests__/should_instrument.test.js

@@ -6,9 +6,9 @@
  *
  */
 
-import shouldInstrument from '../should_instrument';
+import shouldInstrument from '../shouldInstrument';
 
-describe('should_instrument', () => {
+describe('shouldInstrument', () => {
   const defaultFilename = 'source_file.test.js';
   const defaultOptions = {
     collectCoverage: true,

packages/jest-runtime/src/index.js

@@ -26,8 +26,8 @@ import {escapePathForRegex} from 'jest-regex-util';
 import {EXTENSION as SNAPSHOT_EXTENSION} from 'jest-snapshot';
 import fs from 'graceful-fs';
 import stripBOM from 'strip-bom';
-import ScriptTransformer from './script_transformer';
-import shouldInstrument from './should_instrument';
+import ScriptTransformer from './ScriptTransformer';
+import shouldInstrument from './shouldInstrument';
 import {run as cliRun} from './cli';
 import {options as cliOptions} from './cli/args';
 import {findSiblingsWithFileExtension} from './helpers';

packages/jest-runtime/src/should_instrument.js → packages/jest-runtime/src/shouldInstrument.js

@@ -8,7 +8,7 @@
  */
 
 import type {Path, ProjectConfig} from 'types/Config';
-import type {Options} from './script_transformer';
+import type {Options} from './ScriptTransformer';
 
 import path from 'path';
 import {escapePathForRegex} from 'jest-regex-util';