feat: more testing helpers

Author: alexander-akait

templates/test/helpers/getErrors.js

@@ -0,0 +1,5 @@
+import normalizeErrors from './normalizeErrors';
+
+export default (stats) => {
+  return normalizeErrors(stats.compilation.errors);
+};

templates/test/helpers/getWarnings.js

@@ -0,0 +1,5 @@
+import normalizeErrors from './normalizeErrors';
+
+export default (stats) => {
+  return normalizeErrors(stats.compilation.warnings);
+};

templates/test/helpers/index.js

@@ -1,6 +1,19 @@
 import compile from './compile';
+import execute from './execute';
 import getCompiler from './getCompiler';
+import getErrors from './getErrors';
+import getWarnings from './getWarnings';
 import normalizeErrors from './normalizeErrors';
 import readAsset from './readAsset';
+import readsAssets from './readAssets';
 
-export { compile, getCompiler, normalizeErrors, readAsset };
+export {
+  compile,
+  execute,
+  getCompiler,
+  getErrors,
+  getWarnings,
+  normalizeErrors,
+  readAsset,
+  readsAssets,
+};

templates/test/helpers/readAsset.js

@@ -3,10 +3,18 @@ import path from 'path';
 export default (asset, compiler, stats) => {
   const usedFs = compiler.outputFileSystem;
   const outputPath = stats.compilation.outputOptions.path;
+
   let data = '';
+  let targetFile = asset;
+
+  const queryStringIdx = targetFile.indexOf('?');
+
+  if (queryStringIdx >= 0) {
+    targetFile = targetFile.substr(0, queryStringIdx);
+  }
 
   try {
-    data = usedFs.readFileSync(path.join(outputPath, asset)).toString();
+    data = usedFs.readFileSync(path.join(outputPath, targetFile)).toString();
   } catch (error) {
     data = error.toString();
   }

templates/test/helpers/readAssets.js

@@ -0,0 +1,11 @@
+import readAsset from './readAsset';
+
+export default function readAssets(compiler, stats) {
+  const assets = {};
+
+  Object.keys(stats.compilation.assets).forEach((asset) => {
+    assets[asset] = readAsset(asset, compiler, stats);
+  });
+
+  return assets;
+}

templates/test/loader.test.js

@@ -2,7 +2,8 @@ import {
   compile,
   execute,
   getCompiler,
-  normalizeErrors,
+  getErrors,
+  getWarnings,
   readAsset,
 } from './helpers';
 
@@ -14,9 +15,7 @@ describe('loader', () => {
     expect(
       execute(readAsset('main.bundle.js', compiler, stats))
     ).toMatchSnapshot('result');
-    expect(normalizeErrors(stats.compilation.warnings)).toMatchSnapshot(
-      'warnings'
-    );
-    expect(normalizeErrors(stats.compilation.errors)).toMatchSnapshot('errors');
+    expect(getErrors(stats)).toMatchSnapshot('errors');
+    expect(getWarnings(stats)).toMatchSnapshot('warnings');
   });
 });

templates/test/name-option.test.js

@@ -1,4 +1,11 @@
-import { compile, getCompiler, normalizeErrors, readAsset } from './helpers';
+import {
+  compile,
+  execute,
+  getCompiler,
+  getErrors,
+  getWarnings,
+  readAsset,
+} from './helpers';
 
 describe('"name" option', () => {
   it('should work with "Boolean" value equal "true"', async () => {
@@ -7,12 +14,10 @@ describe('"name" option', () => {
     });
     const stats = await compile(compiler);
 
-    expect(readAsset('main.bundle.js', compiler, stats)).toMatchSnapshot(
-      'result'
-    );
-    expect(normalizeErrors(stats.compilation.warnings)).toMatchSnapshot(
-      'warnings'
-    );
-    expect(normalizeErrors(stats.compilation.errors)).toMatchSnapshot('errors');
+    expect(
+      execute(readAsset('main.bundle.js', compiler, stats))
+    ).toMatchSnapshot('result');
+    expect(getErrors(stats)).toMatchSnapshot('errors');
+    expect(getWarnings(stats)).toMatchSnapshot('warnings');
   });
 });

templates/test/validate-options.test.js

@@ -23,26 +23,48 @@ describe('validate options', () => {
     it(`should ${
       type === 'success' ? 'successfully validate' : 'throw an error on'
     } the "${key}" option with "${stringifyValue(value)}" value`, async () => {
-      const compiler = getCompiler('simple.js', { [key]: value });
-
-      let stats;
-
-      try {
-        stats = await compile(compiler);
-      } finally {
-        if (type === 'success') {
-          expect(stats.hasErrors()).toBe(false);
-        } else if (type === 'failure') {
-          const {
-            compilation: { errors },
-          } = stats;
-
-          expect(errors).toHaveLength(1);
-          expect(() => {
-            throw new Error(errors[0].error.message);
-          }).toThrowErrorMatchingSnapshot();
-        }
-      }
+      // For loaders
+      // const compiler = getCompiler('simple.js', { [key]: value });
+      //
+      // let stats;
+      //
+      // try {
+      //   stats = await compile(compiler);
+      // } finally {
+      //   if (type === 'success') {
+      //     expect(stats.hasErrors()).toBe(false);
+      //   } else if (type === 'failure') {
+      //     const {
+      //       compilation: { errors },
+      //     } = stats;
+      //
+      //     expect(errors).toHaveLength(1);
+      //     expect(() => {
+      //       throw new Error(errors[0].error.message);
+      //     }).toThrowErrorMatchingSnapshot();
+      //   }
+      // }
+      // For plugins
+      // let error;
+      //
+      // try {
+      //   // eslint-disable-next-line no-new
+      //   new Plugin({ [key]: value });
+      // } catch (errorFromPlugin) {
+      //   if (errorFromPlugin.name !== 'ValidationError') {
+      //     throw errorFromPlugin;
+      //   }
+      //
+      //   error = errorFromPlugin;
+      // } finally {
+      //   if (type === 'success') {
+      //     expect(error).toBeUndefined();
+      //   } else if (type === 'failure') {
+      //     expect(() => {
+      //       throw error;
+      //     }).toThrowErrorMatchingSnapshot();
+      //   }
+      // }
     });
   }