Initialise XML suite file in the constructor

Signed-off-by: Dmytro Serdiuk <[email protected]>

sunshine-testng/src/main/java/io/github/tatools/sunshine/testng/LoadableTestNGSuite.java

@@ -17,7 +17,7 @@
 public final class LoadableTestNGSuite implements TestNGSuite {
 
     private final SunshineSuite artifacts;
-    private final Directory suitePath;
+    private final File suiteXml;
 
     /**
      * Construct new instance with the specified file system, suite's directory and tests filter.
@@ -61,8 +61,8 @@ public LoadableTestNGSuite(FileSystem fileSystem, Directory xmlSuiteDirectory, C
      * @since 0.1
      */
     public LoadableTestNGSuite(SunshineSuite suite, Directory xmlSuiteDirectory) {
-        this.artifacts = suite;
-        this.suitePath = xmlSuiteDirectory;
+        artifacts = suite;
+        suiteXml = new FileBase(xmlSuiteDirectory, "sunshine-suite.xml");
     }
 
     @Override
@@ -75,9 +75,8 @@ public File tests() throws SuiteException {
                 test.setSuite(xmlSuite);
                 xmlSuite.addTest(test);
             }
-            FileBase fileBase = new FileBase(this.suitePath, "sunshine-suite.xml");
-            fileBase.write(xmlSuite.toXml());
-            return fileBase;
+            suiteXml.write(xmlSuite.toXml());
+            return suiteXml;
         } catch (TestException | IOException e) {
             throw new SuiteException(e);
         }