From 275b0c68d4157045bc17341ff31422f1248c1dc0 Mon Sep 17 00:00:00 2001
From: Weihang Lo <me@weihanglo.tw>
Date: Sun, 10 Apr 2022 22:21:48 +0800
Subject: [PATCH] CI: force using argfile to test againg `cargo fix`

---
 .github/workflows/main.yml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index c009816a3..0e0c88885 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -68,6 +68,13 @@ jobs:
 
     # Deny warnings on CI to avoid warnings getting into the codebase.
     - run: cargo test --features 'deny-warnings'
+    - name: Check operability of rustc invocation with argfile
+      env:
+        __CARGO_TEST_FORCE_ARGFILE: 1
+      run: |
+        # This only tests `cargo fix` because fix-proxy-mode is one of the most
+        # complicated subprocess management in Cargo.
+        cargo test --test testsuite --features 'deny-warnings' -- fix::
     - run: cargo test --features 'deny-warnings' --manifest-path crates/cargo-test-support/Cargo.toml
       env:
         CARGO_TARGET_DIR: target