Add useless test.

src/test.zig

@@ -0,0 +1,18 @@
+const std = @import("std");
+const path = std.fs.path;
+const lib = @import("./lib.zig");
+const fmt = std.fmt;
+
+const default_max_depth = 3;
+
+test "buffer stuff" {
+    var buffer = [_]u8 {0} ** (std.fs.MAX_PATH_BYTES + 100);
+    var fbs = std.io.fixedBufferStream(&buffer);
+
+    var writer = fbs.writer();
+    try fmt.formatType('W',      "c", fmt.FormatOptions{}, writer, default_max_depth);
+    try fmt.formatType("ritten", "s", fmt.FormatOptions{}, writer, default_max_depth);
+
+    lib.print("{s}\n", .{fbs.getWritten()});
+    fbs.reset();
+}