jest compliance

src/main.test.ts

@@ -73,7 +73,15 @@ describe('main', () => {
             JSON.stringify({
               packageManager: 'yarn',
               engines: { node: 'test' },
-              devDependencies: { eslint: '1.1.0' },
+              devDependencies: {
+                eslint: '1.1.0',
+                jest: '1.0.0',
+                'jest-it-up': '1.0.0',
+              },
+              scripts: {
+                test: 'test script',
+                'test:watch': 'test watch script',
+              },
             }),
           );
           await writeFile(
@@ -84,6 +92,10 @@ describe('main', () => {
             path.join(repository.directoryPath, '.nvmrc'),
             'content for .nvmrc',
           );
+          await writeFile(
+            path.join(repository.directoryPath, 'jest.config.js'),
+            'content for jest.config.js',
+          );
         }
         const outputLogger = new FakeOutputLogger();
 
@@ -108,15 +120,18 @@ repo-1
   - Does the \`packageManager\` field in \`package.json\` conform? ✅
   - Does the \`engines.node\` field in \`package.json\` conform? ✅
   - Do the lint-related \`devDependencies\` in \`package.json\` conform? ✅
+  - Do the jest-related \`devDependencies\` in \`package.json\` conform? ✅
+  - Do the test-related \`scripts\` in \`package.json\` conform? ✅
 - Is \`README.md\` present? ✅
   - Does the README conform by recommending the correct Yarn version to install? ✅
   - Does the README conform by recommending node install from nodejs.org? ✅
 - Are all of the files for Yarn Modern present, and do they conform? ✅
   - Does the README conform by recommending the correct Yarn version to install? ✅
 - Does the \`src/\` directory exist? ✅
 - Is \`.nvmrc\` present, and does it conform? ✅
+- Is \`jest.config.js\` present, and does it conform? ✅
 
-Results:       12 passed, 0 failed, 12 total
+Results:       15 passed, 0 failed, 15 total
 Elapsed time:  0 ms
 
 
@@ -128,15 +143,18 @@ repo-2
   - Does the \`packageManager\` field in \`package.json\` conform? ✅
   - Does the \`engines.node\` field in \`package.json\` conform? ✅
   - Do the lint-related \`devDependencies\` in \`package.json\` conform? ✅
+  - Do the jest-related \`devDependencies\` in \`package.json\` conform? ✅
+  - Do the test-related \`scripts\` in \`package.json\` conform? ✅
 - Is \`README.md\` present? ✅
   - Does the README conform by recommending the correct Yarn version to install? ✅
   - Does the README conform by recommending node install from nodejs.org? ✅
 - Are all of the files for Yarn Modern present, and do they conform? ✅
   - Does the README conform by recommending the correct Yarn version to install? ✅
 - Does the \`src/\` directory exist? ✅
 - Is \`.nvmrc\` present, and does it conform? ✅
+- Is \`jest.config.js\` present, and does it conform? ✅
 
-Results:       12 passed, 0 failed, 12 total
+Results:       15 passed, 0 failed, 15 total
 Elapsed time:  0 ms
 
 `,
@@ -195,8 +213,10 @@ repo-1
   - \`src/\` does not exist in this project.
 - Is \`.nvmrc\` present, and does it conform? ❌
   - \`.nvmrc\` does not exist in this project.
+- Is \`jest.config.js\` present, and does it conform? ❌
+  - \`jest.config.js\` does not exist in this project.
 
-Results:       0 passed, 6 failed, 6 total
+Results:       0 passed, 7 failed, 7 total
 Elapsed time:  0 ms
 
 
@@ -217,8 +237,10 @@ repo-2
   - \`src/\` does not exist in this project.
 - Is \`.nvmrc\` present, and does it conform? ❌
   - \`.nvmrc\` does not exist in this project.
+- Is \`jest.config.js\` present, and does it conform? ❌
+  - \`jest.config.js\` does not exist in this project.
 
-Results:       0 passed, 6 failed, 6 total
+Results:       0 passed, 7 failed, 7 total
 Elapsed time:  0 ms
 
 `,
@@ -283,8 +305,10 @@ repo-2
   - \`src/\` does not exist in this project.
 - Is \`.nvmrc\` present, and does it conform? ❌
   - \`.nvmrc\` does not exist in this project.
+- Is \`jest.config.js\` present, and does it conform? ❌
+  - \`jest.config.js\` does not exist in this project.
 
-Results:       1 passed, 5 failed, 6 total
+Results:       1 passed, 6 failed, 7 total
 Elapsed time:  0 ms
 
 `.trimStart(),
@@ -340,7 +364,15 @@ Elapsed time:  0 ms
             JSON.stringify({
               packageManager: 'yarn',
               engines: { node: 'test' },
-              devDependencies: { eslint: '1.1.0' },
+              devDependencies: {
+                eslint: '1.1.0',
+                jest: '1.0.0',
+                'jest-it-up': '1.0.0',
+              },
+              scripts: {
+                test: 'test script',
+                'test:watch': 'test watch script',
+              },
             }),
           );
           await writeFile(
@@ -351,6 +383,10 @@ Elapsed time:  0 ms
             path.join(repository.directoryPath, '.nvmrc'),
             'content for .nvmrc',
           );
+          await writeFile(
+            path.join(repository.directoryPath, 'jest.config.js'),
+            'content for jest.config.js',
+          );
         }
         const outputLogger = new FakeOutputLogger();
 
@@ -375,15 +411,18 @@ repo-1
   - Does the \`packageManager\` field in \`package.json\` conform? ✅
   - Does the \`engines.node\` field in \`package.json\` conform? ✅
   - Do the lint-related \`devDependencies\` in \`package.json\` conform? ✅
+  - Do the jest-related \`devDependencies\` in \`package.json\` conform? ✅
+  - Do the test-related \`scripts\` in \`package.json\` conform? ✅
 - Is \`README.md\` present? ✅
   - Does the README conform by recommending the correct Yarn version to install? ✅
   - Does the README conform by recommending node install from nodejs.org? ✅
 - Are all of the files for Yarn Modern present, and do they conform? ✅
   - Does the README conform by recommending the correct Yarn version to install? ✅
 - Does the \`src/\` directory exist? ✅
 - Is \`.nvmrc\` present, and does it conform? ✅
+- Is \`jest.config.js\` present, and does it conform? ✅
 
-Results:       12 passed, 0 failed, 12 total
+Results:       15 passed, 0 failed, 15 total
 Elapsed time:  0 ms
 
 
@@ -395,15 +434,18 @@ repo-2
   - Does the \`packageManager\` field in \`package.json\` conform? ✅
   - Does the \`engines.node\` field in \`package.json\` conform? ✅
   - Do the lint-related \`devDependencies\` in \`package.json\` conform? ✅
+  - Do the jest-related \`devDependencies\` in \`package.json\` conform? ✅
+  - Do the test-related \`scripts\` in \`package.json\` conform? ✅
 - Is \`README.md\` present? ✅
   - Does the README conform by recommending the correct Yarn version to install? ✅
   - Does the README conform by recommending node install from nodejs.org? ✅
 - Are all of the files for Yarn Modern present, and do they conform? ✅
   - Does the README conform by recommending the correct Yarn version to install? ✅
 - Does the \`src/\` directory exist? ✅
 - Is \`.nvmrc\` present, and does it conform? ✅
+- Is \`jest.config.js\` present, and does it conform? ✅
 
-Results:       12 passed, 0 failed, 12 total
+Results:       15 passed, 0 failed, 15 total
 Elapsed time:  0 ms
 
 `,
@@ -462,8 +504,10 @@ repo-1
   - \`src/\` does not exist in this project.
 - Is \`.nvmrc\` present, and does it conform? ❌
   - \`.nvmrc\` does not exist in this project.
+- Is \`jest.config.js\` present, and does it conform? ❌
+  - \`jest.config.js\` does not exist in this project.
 
-Results:       0 passed, 6 failed, 6 total
+Results:       0 passed, 7 failed, 7 total
 Elapsed time:  0 ms
 
 
@@ -484,8 +528,10 @@ repo-2
   - \`src/\` does not exist in this project.
 - Is \`.nvmrc\` present, and does it conform? ❌
   - \`.nvmrc\` does not exist in this project.
+- Is \`jest.config.js\` present, and does it conform? ❌
+  - \`jest.config.js\` does not exist in this project.
 
-Results:       0 passed, 6 failed, 6 total
+Results:       0 passed, 7 failed, 7 total
 Elapsed time:  0 ms
 
 `,
@@ -549,8 +595,10 @@ repo-2
   - \`src/\` does not exist in this project.
 - Is \`.nvmrc\` present, and does it conform? ❌
   - \`.nvmrc\` does not exist in this project.
+- Is \`jest.config.js\` present, and does it conform? ❌
+  - \`jest.config.js\` does not exist in this project.
 
-Results:       1 passed, 5 failed, 6 total
+Results:       1 passed, 6 failed, 7 total
 Elapsed time:  0 ms
 
 `,

src/rules/index.ts

@@ -1,10 +1,13 @@
 import allYarnModernFilesConform from './all-yarn-modern-files-conform';
 import classicYarnConfigFileAbsent from './classic-yarn-config-file-absent';
 import packageEnginesNodeFieldConforms from './package-engines-node-field-conforms';
+import packageJestDependenciesConform from './package-jest-dependencies-conform';
 import packageLintDependenciesConform from './package-lint-dependencies-conform';
 import packagePackageManagerFieldConforms from './package-package-manager-field-conforms';
+import packageTestScriptsConform from './package-test-scripts-conform';
 import readmeListsCorrectYarnVersion from './readme-lists-correct-yarn-version';
 import readmeListsNodejsWebsite from './readme-recommends-node-install';
+import requireJestConfig from './require-jest-config';
 import requireNvmrc from './require-nvmrc';
 import requireReadme from './require-readme';
 import requireSourceDirectory from './require-source-directory';
@@ -22,4 +25,7 @@ export const rules = [
   packageEnginesNodeFieldConforms,
   readmeListsNodejsWebsite,
   packageLintDependenciesConform,
+  packageJestDependenciesConform,
+  requireJestConfig,
+  packageTestScriptsConform,
 ] as const;

src/rules/package-engines-node-field-conforms.test.ts

@@ -18,6 +18,7 @@ describe('Rule: package-engines-node-field-conforms', () => {
           packageManager: 'a',
           engines: { node: 'test' },
           devDependencies: { eslint: '1.0.0' },
+          scripts: { test: 'jest && jest-it-up' },
         }),
       );
       const project = buildMetaMaskRepository({
@@ -30,6 +31,7 @@ describe('Rule: package-engines-node-field-conforms', () => {
           packageManager: 'a',
           engines: { node: 'test' },
           devDependencies: { eslint: '1.0.0' },
+          scripts: { test: 'jest && jest-it-up' },
         }),
       );
 
@@ -58,6 +60,7 @@ describe('Rule: package-engines-node-field-conforms', () => {
           packageManager: 'a',
           engines: { node: 'test1' },
           devDependencies: { eslint: '1.0.0' },
+          scripts: { test: 'jest && jest-it-up' },
         }),
       );
       const project = buildMetaMaskRepository({
@@ -70,6 +73,7 @@ describe('Rule: package-engines-node-field-conforms', () => {
           packageManager: 'a',
           engines: { node: 'test2' },
           devDependencies: { eslint: '1.0.0' },
+          scripts: { test: 'jest && jest-it-up' },
         }),
       );