feat: add cargo nextest support

Signed-off-by: Alex Chi <iskyzh@gmail.com>

src/cli.rs

@@ -199,6 +199,14 @@ pub(crate) enum Subcommand {
     )]
     Clean(CleanOptions),
 
+    /// Run tests with cargo nextest
+    #[clap(
+        bin_name = "cargo llvm-cov nextest",
+        max_term_width(MAX_TERM_WIDTH),
+        setting(AppSettings::DeriveDisplayOrder)
+    )]
+    Nextest,
+
     // internal (unstable)
     #[clap(
         bin_name = "cargo llvm-cov demangle",

src/main.rs

@@ -100,6 +100,26 @@ fn try_main() -> Result<()> {
             writer.set("CARGO_LLVM_COV_TARGET_DIR", cx.ws.metadata.target_directory.as_str());
         }
 
+        Some(Subcommand::Nextest) => {
+            let cx = &context_from_args(&mut args, false)?;
+
+            clean::clean_partial(cx)?;
+            create_dirs(cx)?;
+            match (args.no_run, cx.cov.no_report) {
+                (false, false) => {
+                    run_nextest(cx, &args)?;
+                    generate_report(cx)?;
+                }
+                (false, true) => {
+                    run_nextest(cx, &args)?;
+                }
+                (true, false) => {
+                    generate_report(cx)?;
+                }
+                (true, true) => unreachable!(),
+            }
+        }
+
         None => {
             let cx = &context_from_args(&mut args, false)?;
             let tmp = term::warn(); // The following warnings should not be promoted to an error.
@@ -274,6 +294,22 @@ fn run_test(cx: &Context, args: &Args) -> Result<()> {
     Ok(())
 }
 
+fn run_nextest(cx: &Context, args: &Args) -> Result<()> {
+    let mut cargo = cx.cargo();
+
+    set_env(cx, &mut cargo);
+
+    cargo.arg("nextest").arg("run");
+
+    cargo::test_args(cx, args, &mut cargo);
+
+    if term::verbose() {
+        status!("Running", "{}", cargo);
+    }
+    cargo.stdout_to_stderr().run()?;
+    Ok(())
+}
+
 fn run_run(cx: &Context, args: &RunOptions) -> Result<()> {
     let mut cargo = cx.cargo();