test: ensure clang --driver-mode=cl is MSVC- and clang-cl-like

Author: ErichDonGubler

src/lib.rs

@@ -2708,7 +2708,7 @@ impl Build {
         let out_dir = self.get_out_dir().ok();
         let out_dir = out_dir.as_deref();
 
-        if let Some(c) = &self.compiler {
+        if let Some(c) = dbg!(&self.compiler) {
             return Ok(Tool::new(
                 (**c).to_owned(),
                 &self.build_cache.cached_compiler_family,

tests/cc_env.rs

@@ -110,3 +110,21 @@ fn more_spaces() {
     let compiler = test.gcc().file("foo.c").get_compiler();
     assert_eq!(compiler.path(), Path::new("cc"));
 }
+
+fn clang_cl() {
+    let test = |cc| {
+        let test = Test::clang();
+        env::set_var("CC", cc);
+        let test_compiler = |build: cc::Build| {
+            let compiler = build.get_compiler();
+            assert_eq!(compiler.path(), Path::new("clang"));
+            // assert_eq!(compiler.args(), vec!["--driver-mode=cl"]);
+            assert!(compiler.is_like_msvc());
+            assert!(compiler.is_like_clang_cl());
+        };
+        test_compiler(test.gcc());
+    };
+
+    test("clang --driver-mode=cl");
+    // test("clang.exe --driver-mode=cl");
+}