Adds some more IO Helpers

test/io_test.dart

@@ -0,0 +1,32 @@
+import 'package:libac_dart/utils/IOTools.dart';
+import 'package:test/expect.dart';
+import 'package:test/scaffolding.dart';
+
+Future<void> main() async {
+  test("Test file size checking", () async {
+    expect(await getFileSize("test/hello_world.nbt"), 33);
+    expect(await getFileSize("test/bigtest.nbt"), 507);
+  });
+
+  test("Test directory size checking", () async {
+    expect(await getDirectorySize("test"), 9046);
+  });
+
+  test("Test file info methods", () async {
+    FileInfo fi = FileInfo(path: "C:\\test.txt", size: 4096, isFile: true);
+    expect(fi.toString(), "4.0 KB");
+  });
+
+  test("Test ordered file info lists", () async {
+    await getDirectorySize("test", cacheSize: true);
+    FileInformationCache FIC = FileInformationCache.obtain();
+    var list = await FIC.getOrderedList(ascending: false);
+    var ascList = await FIC.getOrderedList(ascending: true);
+
+    print(list);
+    print(ascList);
+
+    expect(list[0].size > ascList[0].size, true);
+    expect(list[list.length - 1].size == ascList[0].size, true);
+  });
+}