🐛 (tasks) fix frontend task run on empty test generation

Author: Itee

.tasks/.tests/benchmarks/compute-benchmarks.task.mjs

@@ -1,11 +1,6 @@
 import colors           from 'ansi-colors'
 import childProcess     from 'child_process'
 import log              from 'fancy-log'
-import {
-    existsSync,
-    mkdirSync,
-    writeFileSync
-}                       from 'fs'
 import {
     basename,
     dirname,
@@ -17,13 +12,14 @@ import {
     nodeModulesDirectory,
     packageName,
     packageSourcesDirectory as sourcesDir,
-    packageTestsBenchmarksDirectory as benchesDir
+    packageTestsBenchmarksDirectory as benchesDir,
+    createDirectoryIfNotExist,
+    createFile
 }                       from '../../_utils.mjs'
 import { sourcesFiles } from '../../configs/compute-benchmarks.conf.mjs'
 
 const {
           red,
-          green,
           yellow
       } = colors
 
@@ -32,10 +28,7 @@ const {
  */
 const computeBenchmarksTask       = ( done ) => {
 
-    if ( !existsSync( benchesDir ) ) {
-        log( 'Creating', green( benchesDir ) )
-        mkdirSync( benchesDir, { recursive: true } )
-    }
+    createDirectoryIfNotExist( benchesDir )
 
     const benchRootImports = []
     for ( let sourceFile of sourcesFiles ) {
@@ -156,13 +149,8 @@ const computeBenchmarksTask       = ( done ) => {
                 exports: suitesToExports
             } )
 
-            if ( !existsSync( benchDirPath ) ) {
-                log( 'Creating', green( benchDirPath ) )
-                mkdirSync( benchDirPath, { recursive: true } )
-            }
-
-            log( 'Creating', green( benchFilePath ) )
-            writeFileSync( benchFilePath, template )
+            createDirectoryIfNotExist( benchDirPath )
+            createFile( benchFilePath, template )
 
         } catch ( error ) {
 
@@ -185,6 +173,16 @@ const computeBenchmarksTask       = ( done ) => {
 
     }
 
+    // Use a fallback in case no benches were found at all
+    if ( benchRootImports.length === 0 ) {
+        log( 'Warning ', yellow( 'No usable exports found, generate default file to avoid frontend breakage.' ) )
+        const defaultBenchesDir  = join( benchesDir, 'default' )
+        const defaultBenchesPath = join( defaultBenchesDir, 'default.bench.js' )
+
+        createDirectoryIfNotExist( defaultBenchesDir )
+        createFile( defaultBenchesPath, '// Avoid web test runner crash on empty benches' )
+    }
+
     const benchesTemplate = '' +
         `${ templateImports }` + '\n' +
         'const suites = [' + '\n' +
@@ -196,9 +194,7 @@ const computeBenchmarksTask       = ( done ) => {
         `}` + '\n'
 
     const benchesFilePath = join( benchesDir, `${ packageName }.benchmarks.js` )
-
-    log( 'Creating', green( benchesFilePath ) )
-    writeFileSync( benchesFilePath, benchesTemplate )
+    createFile( benchesFilePath, benchesTemplate )
 
     done()
 

.tasks/.tests/unit-tests/compute-unit-tests.task.mjs

@@ -1,11 +1,6 @@
 import colors              from 'ansi-colors'
 import childProcess        from 'child_process'
 import log                 from 'fancy-log'
-import {
-    existsSync,
-    mkdirSync,
-    writeFileSync
-}                          from 'fs'
 import { isNotEmptyArray } from 'itee-validators'
 import {
     basename,
@@ -15,18 +10,19 @@ import {
     relative
 }                          from 'path'
 import {
+    createDirectoryIfNotExist,
+    createFile,
+    getPrettyPackageName,
     Indenter,
     nodeModulesDirectory,
     packageName,
     packageSourcesDirectory as sourcesDir,
-    packageTestsUnitsDirectory as unitsDir,
-    getPrettyPackageName
+    packageTestsUnitsDirectory as unitsDir
 }                          from '../../_utils.mjs'
 import { sourcesFiles }    from '../../configs/compute-unit-tests.conf.mjs'
 
 const {
           red,
-          green,
           yellow
       } = colors
 
@@ -35,10 +31,7 @@ const {
  */
 const computeUnitTestsTask       = ( done ) => {
 
-    if ( !existsSync( unitsDir ) ) {
-        log( 'Creating', green( unitsDir ) )
-        mkdirSync( unitsDir, { recursive: true } )
-    }
+    createDirectoryIfNotExist( unitsDir )
 
     const unitsImportMap = []
     for ( let sourceFile of sourcesFiles ) {
@@ -484,13 +477,8 @@ const computeUnitTestsTask       = ( done ) => {
                 path:       importUnitFilePath.replace( /\\/g, '/' )
             } )
 
-            if ( !existsSync( unitDirPath ) ) {
-                log( 'Creating', green( unitDirPath ) )
-                mkdirSync( unitDirPath, { recursive: true } )
-            }
-
-            log( 'Creating', green( unitFilePath ) )
-            writeFileSync( unitFilePath, template )
+            createDirectoryIfNotExist( unitDirPath )
+            createFile( unitFilePath, template )
 
         } catch ( error ) {
 
@@ -514,17 +502,20 @@ const computeUnitTestsTask       = ( done ) => {
 
     } else {
 
-        log( yellow( 'No tests were generated. Create fallback global root import file.' ) )
+        log( 'Warning ', yellow( 'No tests were generated. Create fallback global root import file.' ) )
+        const defaultUnitsDir  = join( unitsDir, 'default' )
+        const defaultUnitsPath = join( defaultUnitsDir, 'default.unit.mjs' )
+
+        createDirectoryIfNotExist( defaultUnitsDir )
+        createFile( defaultUnitsPath, '// Avoid web test runner crash on empty benches' )
 
-        const prettyPackageName = getPrettyPackageName('#')
-        unitsTemplate = `describe( '${prettyPackageName}', () => {} )` + '\n'
+        const prettyPackageName = getPrettyPackageName( '#' )
+        unitsTemplate           = `describe( '${ prettyPackageName }', () => {} )` + '\n'
 
     }
 
     const unitsFilePath = join( unitsDir, `${ packageName }.units.mjs` )
-
-    log( 'Creating', green( unitsFilePath ) )
-    writeFileSync( unitsFilePath, unitsTemplate )
+    createFile( unitsFilePath, unitsTemplate )
 
     done()
 

.tasks/_utils.mjs

@@ -1,15 +1,25 @@
 import colors            from 'ansi-colors'
 import childProcess      from 'child_process'
 import log               from 'fancy-log'
-import { readFileSync }  from 'fs'
+import {
+    existsSync,
+    mkdirSync,
+    readFileSync,
+    writeFileSync
+}                        from 'fs'
 import {
     dirname,
     join
 }                        from 'path'
 import { fileURLToPath } from 'url'
 
-const red    = colors.red
-const yellow = colors.yellow
+const {
+          red,
+          green,
+          yellow
+      } = colors
+
+///
 
 function getDirname() {
 
@@ -52,6 +62,8 @@ const packageTestsUnitsDirectory      = join( packageTestsDirectory, 'units' )
 const packageDocsDirectory            = join( packageRootDirectory, 'docs' )
 const packageTutorialsDirectory       = join( packageRootDirectory, 'tutorials' )
 
+///
+
 function getPackageJson() {
 
     const packageData = readFileSync( packageJsonPath )
@@ -124,6 +136,26 @@ function getPrettyNpmVersion() {
 
 }
 
+///
+
+function createDirectoryIfNotExist( directoryPath ) {
+
+    if ( !existsSync( directoryPath ) ) {
+        log( 'Creating', green( directoryPath ) )
+        mkdirSync( directoryPath, { recursive: true } )
+    }
+
+}
+
+function createFile( filePath, fileContent ) {
+
+    log( 'Creating', green( filePath ) )
+    writeFileSync( filePath, fileContent )
+
+}
+
+///
+
 function IndenterFactory( indentationChar = '\t', indentationLevel = 5 ) {
 
     const indentationLevels = {}
@@ -163,6 +195,8 @@ class Indenter {
 
 }
 
+///
+
 export {
     packageRootDirectory,
     packageJsonPath,
@@ -188,5 +222,8 @@ export {
     getPrettyNodeVersion,
     getPrettyNpmVersion,
 
+    createDirectoryIfNotExist,
+    createFile,
+
     IndenterFactory as Indenter
 }