Add more test

.github/driver.sh

@@ -11,9 +11,16 @@ if [[ ${OS} == "Windows" ]]; then
 else
 	desired_sysroot=/tmp
 fi
+# Set --sysroot in command line
 sysroot=$(./target/debug/clippy-driver --sysroot $desired_sysroot --print sysroot)
 test "$sysroot" = $desired_sysroot
 
+# Set --sysroot in arg_file.txt and pass @arg_file.txt to command line
+echo "--sysroot=$desired_sysroot" > arg_file.txt
+sysroot=$(./target/debug/clippy-driver @arg_file.txt --print sysroot)
+test "$sysroot" = $desired_sysroot
+
+# Setting SYSROOT in command line
 sysroot=$(SYSROOT=$desired_sysroot ./target/debug/clippy-driver --print sysroot)
 test "$sysroot" = $desired_sysroot
 

arg_file.txt

@@ -0,0 +1,2 @@
+--sysroot=/usr/local/google/home/vinhdaitran/.rustup/toolchains/nightly-2024-01-11-x86_64-unknown-linux-gnu
+--verbose

double_neg.stderr

@@ -0,0 +1,12 @@
+error: `--x` could be misinterpreted as pre-decrement by C programmers, is usually a no-op
+  --> tests/ui/double_neg.rs:7:5
+   |
+LL |     --x;
+   |     ^^^
+   |
+   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#double_neg
+   = note: `-D clippy::double-neg` implied by `-D warnings`
+   = help: to override `-D warnings` add `#[allow(clippy::double_neg)]`
+
+error: aborting due to 1 previous error
+

normalized.stderr

@@ -0,0 +1,11 @@
+error: `--x` could be misinterpreted as pre-decrement by C programmers, is usually a no-op
+  --> $DIR/double_neg.rs:7:5
+   |
+LL |     --x;
+   |     ^^^
+   |
+   = note: `-D clippy::double-neg` implied by `-D warnings`
+   = help: to override `-D warnings` add `#[allow(clippy::double_neg)]`
+
+error: aborting due to 1 previous error
+