test(testenv): Update test/helpers/init.js

Add environment variables that are set during test initialization to
ensure portability between local and CI Build environments

Related to: #133

test/helpers/init.js

@@ -1,2 +1,19 @@
-const path = require('path')
-process.env.TS_NODE_PROJECT = path.resolve('test/tsconfig.json')
+const path  = require('path');
+const del   = require('del');
+
+// Set environment vars in the current process.
+process.env.TS_NODE_PROJECT       = path.resolve('test/tsconfig.json'); // Part of the boilerplate code.
+process.env.FALCON_COMMAND_RUNNER = path.resolve('bin/run');            // Path to the command runner utility.
+process.env.FALCON_TEST_TEMPDIR   = path.resolve('test/temp');          // Path to the temp directory used during tests.
+
+// Delete everything inside of the Falcon Test Temp Directory EXCEPT .gitignore
+del.sync(
+  [
+    `${process.env.FALCON_TEST_TEMPDIR}/**/*`,        // Delete everything from the Test Temp Directory
+    `!${process.env.FALCON_TEST_TEMPDIR}/.gitignore`  // EXCEPT the .gitignore file.
+  ],
+  {
+    dryRun: false,  // Determines if the command will actually delete or just return an array of what WOULD be deleted. 
+    dot: true       // Determines if dotfiles are deleted or not.
+  }
+);