subplotlib: Fix doctests in file module

Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/subplotlib/src/file.rs b/subplotlib/src/file.rs
index e44c0ef..f695a89 100644
--- a/subplotlib/src/file.rs
+++ b/subplotlib/src/file.rs
@@ -18,11 +18,15 @@ use base64::decode;
 ///
 /// ```rust
 /// # use subplotlib::prelude::*;
+/// # #[derive(Default)]
 /// # struct Context {}
+/// # impl ContextElement for Context {}
 /// #[step]
 /// fn step_using_a_file(context: &mut Context, somefile: SubplotDataFile) {
 ///     // context.stash_file(somefile);
 /// }
+///
+/// # fn main() {}
 /// ```
 ///
 /// For the generated test to correctly recognise how to pass a file in, you