dev #13442 fix thumbnail write on command line

cosmogramme/php/classes/classe_cosmopaths.php

@@ -30,7 +30,8 @@ class CosmoPaths {
 
 
   public function getBasePath() {
-    $parts = explode('/', $this->getFilePath());
+    $parts = array_filter(explode('/', $this->getFilePath()),
+                          function($part) { return $part !== '';});
     while ((count($parts)>0) && (end($parts) !== static::$_dir_name))
       array_pop($parts);
     array_pop($parts);

cosmogramme/tests/php/classes/CosmoPathsTest.php

@@ -214,6 +214,11 @@ class CosmoPathsFromCommandLineTest extends CosmoPathsTestCase {
 																			 ->whenCalled('getcwd')
 																			 ->answers('/srv/http/bokeh.fr/cosmogramme'));
 	}
+
+  /** @test */
+  public function getBasePathShouldNotStartWithADoubleSlash() {
+    $this->assertEquals('/srv/http/', substr($this->_cosmo_paths->getBasePath(), 0, 10));
+  }
 }