Extract getSolution to seperate interface

Author: AydinHassan

src/Exercise/CgiExercise.php

@@ -9,7 +9,7 @@
  *
  * @package PhpSchool\PhpWorkshop\Exercise
  */
-interface CgiExercise
+interface CgiExercise extends ProvidesSolution
 {
     /**
      * This method should return an array of PSR-7 requests, which will be forwarded to the student's

src/Exercise/CliExercise.php

@@ -7,7 +7,7 @@
  *
  * @package PhpSchool\PhpWorkshop\Exercise
  */
-interface CliExercise
+interface CliExercise extends ProvidesSolution
 {
     /**
      * This method should return an array of strings which will be passed to the student's solution

src/Exercise/ExerciseInterface.php

@@ -29,6 +29,13 @@ public function getName();
      */
     public function getType();
 
+    /**
+     * Get the absolute path to the markdown file which contains the exercise problem.
+     *
+     * @return string
+     */
+    public function getProblem();
+
     /**
      * This is where the exercise specifies the extra checks it may require. It is also
      * possible to grab the event dispatcher from the exercise dispatcher and listen to any
@@ -46,20 +53,6 @@ public function configure(ExerciseDispatcher $dispatcher);
      */
     public function getDescription();
 
-    /**
-     * Get the exercise solution.
-     *
-     * @return SolutionInterface
-     */
-    public function getSolution();
-
-    /**
-     * Get the absolute path to the markdown file which contains the exercise problem.
-     *
-     * @return string
-     */
-    public function getProblem();
-
     /**
      * Allows to perform some cleanup after the exercise solution's have been executed, for example
      * remove files, close DB connections.

src/Exercise/ProvidesSolution.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace PhpSchool\PhpWorkshop\Exercise;
+
+use PhpSchool\PhpWorkshop\Solution\SolutionInterface;
+
+/**
+ * @author Aydin Hassan <aydin@hotmail.co.uk>
+ */
+interface ProvidesSolution
+{
+    /**
+     * Get the exercise solution.
+     *
+     * @return SolutionInterface
+     */
+    public function getSolution();
+}

src/ResultRenderer/ResultsRenderer.php

@@ -4,6 +4,7 @@
 
 use Colors\Color;
 use PhpSchool\CliMenu\Terminal\TerminalInterface;
+use PhpSchool\PhpWorkshop\Exercise\ProvidesSolution;
 use PhpSchool\PhpWorkshop\Factory\ResultRendererFactory;
 use PhpSchool\PhpWorkshop\Output\OutputInterface;
 use PhpSchool\PhpWorkshop\Result\SuccessInterface;
@@ -153,23 +154,25 @@ private function renderSuccessInformation(
         $output->writeLine($this->style(" PASS!", ['green', 'bg_default', 'bold']));
         $output->emptyLine();
 
-        $output->writeLine("Here's the official solution in case you want to compare notes:");
-        $output->writeLine($this->lineBreak());
+        if ($exercise instanceof ProvidesSolution) {
+            $output->writeLine("Here's the official solution in case you want to compare notes:");
+            $output->writeLine($this->lineBreak());
 
-        foreach ($exercise->getSolution()->getFiles() as $file) {
-            $output->writeLine($this->style($file->getRelativePath(), ['bold', 'cyan', 'underline']));
-            $output->emptyLine();
+            foreach ($exercise->getSolution()->getFiles() as $file) {
+                $output->writeLine($this->style($file->getRelativePath(), ['bold', 'cyan', 'underline']));
+                $output->emptyLine();
 
-            $code = $file->getContents();
-            if (pathinfo($file->getRelativePath(), PATHINFO_EXTENSION) === 'php') {
-                $code = $this->syntaxHighlighter->highlight($code);
-            }
+                $code = $file->getContents();
+                if (pathinfo($file->getRelativePath(), PATHINFO_EXTENSION) === 'php') {
+                    $code = $this->syntaxHighlighter->highlight($code);
+                }
 
-            //make sure there is a new line at the end
-            $code = preg_replace('/\n$/', '', $code) . "\n";
+                //make sure there is a new line at the end
+                $code = preg_replace('/\n$/', '', $code) . "\n";
 
-            $output->write($code);
-            $output->writeLine($this->lineBreak());
+                $output->write($code);
+                $output->writeLine($this->lineBreak());
+            }
         }
 
         $completedCount = count($userState->getCompletedExercises());

test/Listener/PrepareSolutionListenerTest.php

@@ -3,6 +3,7 @@
 namespace PhpSchool\PhpWorkshopTest\Listener;
 
 use PhpSchool\PhpWorkshop\Event\Event;
+use PhpSchool\PhpWorkshop\Exercise\CliExercise;
 use PhpSchool\PhpWorkshop\Exercise\ExerciseInterface;
 use PhpSchool\PhpWorkshop\Listener\PrepareSolutionListener;
 use PhpSchool\PhpWorkshop\Solution\SolutionInterface;
@@ -50,7 +51,7 @@ public function testIfSolutionRequiresComposerButComposerCannotBeLocatedExceptio
         $refProp->setValue($this->listener, []);
 
         $solution = $this->createMock(SolutionInterface::class);
-        $exercise = $this->createMock(ExerciseInterface::class);
+        $exercise = $this->createMock([ExerciseInterface::class, CliExercise::class]);
         $exercise->expects($this->any())
             ->method('getSolution')
             ->will($this->returnValue($solution));
@@ -72,7 +73,7 @@ public function testIfSolutionRequiresComposerButVendorDirExistsNothingIsDone()
         $this->assertFileExists(sprintf('%s/vendor', dirname($this->file)));
 
         $solution = $this->createMock(SolutionInterface::class);
-        $exercise = $this->createMock(ExerciseInterface::class);
+        $exercise = $this->createMock([ExerciseInterface::class, CliExercise::class]);
         $exercise->expects($this->any())
             ->method('getSolution')
             ->will($this->returnValue($solution));
@@ -105,7 +106,7 @@ public function testIfSolutionRequiresComposerComposerInstallIsExecuted()
         ]));
 
         $solution = $this->createMock(SolutionInterface::class);
-        $exercise = $this->createMock(ExerciseInterface::class);
+        $exercise = $this->createMock([ExerciseInterface::class, CliExercise::class]);
         $exercise->expects($this->any())
             ->method('getSolution')
             ->will($this->returnValue($solution));