Add complete coverage for init

tests/gnupg_res_init_home_dir.phpt

@@ -0,0 +1,34 @@
+--TEST--
+init resource with custom home_dir
+--SKIPIF--
+<?php if(!class_exists("gnupg")) die("skip"); ?>
+--FILE--
+<?php
+require_once "gnupgt.inc";
+$homedir = __DIR__ . '/init_res_home';
+if (!is_dir($homedir)) {
+    mkdir($homedir);
+}
+
+$gpg = gnupg_init(array('home_dir' => $homedir));
+gnupg_seterrormode($gpg, gnupg::ERROR_WARNING);
+gnupg_import($gpg, $testkey);
+$imported = false;
+foreach (glob("$homedir/*") as $filename) {
+    $imported = true;
+}
+var_dump($imported);
+$engine = gnupg_getengineinfo($gpg);
+var_dump($engine['home_dir'] === $homedir);
+?>
+--EXPECT--
+bool(true)
+bool(true)
+--CLEAN--
+<?php
+$homedir = __DIR__ . '/init_res_home';
+foreach (glob($homedir . '/*') as $filename) {
+    unlink($filename);
+}
+rmdir($homedir);
+?>