feat(cli): add --all option to run test command

cli/commands/run/test.ts

@@ -1,9 +1,13 @@
+import fs from 'node:fs'
+import path from 'node:path'
+
 import { Command, Option } from 'clipanion'
 import * as typanion from 'typanion'
 import chalk from 'chalk'
 
 import { Solution } from '../../services/Solution'
 import { GitAffected } from '../../services/GitAffected'
+import { template } from '../../services/Template'
 
 const successMessage = `${chalk.bold.green('Success:')} Tests passed! 🎉`
 
@@ -16,7 +20,7 @@ export class RunTestCommand extends Command {
   }
 
   public programmingLanguage = Option.String('--language', {
-    description: 'The programming language to use to solve the challenge.',
+    description: 'The programming language used to solve the challenge.',
     validator: typanion.isString()
   })
 
@@ -34,6 +38,10 @@ export class RunTestCommand extends Command {
     description: 'Only run the tests for the affected files in `git`.'
   })
 
+  public all = Option.Boolean('--all', false, {
+    description: 'Run the tests for all the solutions.'
+  })
+
   public isContinuousIntegration = Option.Boolean('--ci', false, {
     description: 'Run the tests for the Continuous Integration (CI).'
   })
@@ -42,21 +50,59 @@ export class RunTestCommand extends Command {
     description: 'Base of the current branch (usually master)'
   })
 
+  async runTests (solutions: Solution[]): Promise<number> {
+    for (const solution of solutions) {
+      await solution.test()
+      console.log('\n------------------------------\n')
+    }
+    console.log(successMessage)
+    return 0
+  }
+
   async execute (): Promise<number> {
     console.log()
     try {
+      if (this.programmingLanguage != null) {
+        await template.verifySupportedProgrammingLanguage(this.programmingLanguage)
+      }
+      if (this.all) {
+        const challengesPath = path.join(
+          __dirname,
+          '..',
+          '..',
+          '..',
+          'challenges'
+        )
+        const challenges = await fs.promises.readdir(challengesPath)
+        const paths: string[] = []
+        for (const challenge of challenges) {
+          const solutionsPath = path.join(challengesPath, challenge, 'solutions')
+          const languagesSolution = (await fs.promises.readdir(solutionsPath)).filter(
+            (name) => {
+              if (this.programmingLanguage != null) {
+                return name === this.programmingLanguage
+              }
+              return name !== '.gitkeep'
+            }
+          )
+          for (const language of languagesSolution) {
+            const solutionPath = (await fs.promises.readdir(path.join(solutionsPath, language))).map((solutionName) => {
+              return `challenges/${challenge}/solutions/${language}/${solutionName}`
+            })
+            paths.push(...solutionPath)
+          }
+        }
+        const solutions = await Solution.getManyByPaths(paths)
+        await this.runTests(solutions)
+        return 0
+      }
       if (this.affected) {
         const gitAffected = new GitAffected({
           isContinuousIntegration: this.isContinuousIntegration,
           base: this.base
         })
         const solutions = await gitAffected.getAffectedSolutions()
-        for (const solution of solutions) {
-          await solution.test()
-          console.log('\n------------------------------\n')
-        }
-        console.log(successMessage)
-        return 0
+        return await this.runTests(solutions)
       }
       if (
         this.solutionName == null ||