MDL-49374 behat: Get install or re-install error code after composer

After composer is installed make sure we just process only
install or re-install

admin/tool/behat/cli/init.php

@@ -44,13 +44,19 @@ require_once(__DIR__ . '/../../../../lib/behat/lib.php');
 chdir(__DIR__);
 $output = null;
 exec("php util.php --diag", $output, $code);
+
+// Ensure we have composer installed, before we install or re-install test site.
+if ($code == BEHAT_EXITCODE_COMPOSER || $code == BEHAT_EXITCODE_INSTALL || $code == BEHAT_EXITCODE_REINSTALL) {
+    testing_update_composer_dependencies();
+    chdir(__DIR__);
+    exec("php util.php --diag", $output, $code);
+}
+
 if ($code == 0) {
     echo "Behat test environment already installed\n";
 
 } else if ($code == BEHAT_EXITCODE_INSTALL) {
 
-    testing_update_composer_dependencies();
-
     // Behat and dependencies are installed and we need to install the test site.
     chdir(__DIR__);
     passthru("php util.php --install", $code);
@@ -60,8 +66,6 @@ if ($code == 0) {
 
 } else if ($code == BEHAT_EXITCODE_REINSTALL) {
 
-    testing_update_composer_dependencies();
-
     // Test site data is outdated.
     chdir(__DIR__);
     passthru("php util.php --drop", $code);
@@ -74,18 +78,6 @@ if ($code == 0) {
         exit($code);
     }
 
-} else if ($code == BEHAT_EXITCODE_COMPOSER) {
-    // Missing Behat dependencies.
-
-    testing_update_composer_dependencies();
-
-    // Returning to admin/tool/behat/cli.
-    chdir(__DIR__);
-    passthru("php util.php --install", $code);
-    if ($code != 0) {
-        exit($code);
-    }
-
 } else {
     // Generic error, we just output it.
     echo implode("\n", $output)."\n";