From 9200fbe95d2bad5266ad45a048d5095b26f2e1df Mon Sep 17 00:00:00 2001
From: Jorge Aparicio <jorge.aparicio@ferrous-systems.com>
Date: Wed, 24 Feb 2021 14:43:35 +0100
Subject: [PATCH] also enable optimizations in the `test` profile

Cargo doc says:

> Note that when using the cargo test and cargo bench commands, the test/bench profiles only apply to the final test executable. Dependencies will continue to use the dev/release profiles.

So with the current settings, `cargo test` optimizes all dependencies but not the top level
crate (e.g. `test/foo.rs`)

This commit adds optimizations to the last `rustc` invocation of `cargo test`. This results in a 6%
reduction in binary size when doing `cargo test` on our sample test file.
---
 Cargo.toml | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Cargo.toml b/Cargo.toml
index 6c72b7d..f64cd93 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -40,6 +40,14 @@ incremental = false
 opt-level = 3 # <-
 overflow-checks = true # <-
 
+[profile.test]
+codegen-units = 1
+debug = 2
+debug-assertions = true # <-
+incremental = false
+opt-level = 3 # <-
+overflow-checks = true # <-
+
 [profile.release]
 codegen-units = 1
 debug = 2