archer: convert to new stand-alone test process (#35697)

var/spack/repos/builtin/packages/archer/package.py

@@ -3,7 +3,6 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-
 import os
 
 from spack.package import *
@@ -50,25 +49,17 @@ def cache_test_sources(self):
         install test subdirectory for use during `spack test run`."""
         self.cache_extra_test_sources(["test"])
 
-    def run_parallel_example_test(self):
-        """Run stand alone test: parallel-simple"""
-
+    def test_run_parallel_example(self):
+        """build and run parallel-simple"""
         test_dir = join_path(self.test_suite.current_test_cache_dir, "test", "parallel")
-
         if not os.path.exists(test_dir):
-            print("Skipping archer test")
-            return
+            raise SkipTest("Parallel test directory does not exist")
 
-        exe = "parallel-simple"
+        test_exe = "parallel-simple"
+        test_src = "{0}.c".format(test_exe)
+        with working_dir(test_dir):
+            clang = which("clang-archer")
+            clang("-o", test_exe, test_src)
 
-        self.run_test(
-            "clang-archer",
-            options=["-o", exe, "{0}".format(join_path(test_dir, "parallel-simple.c"))],
-            purpose="test: compile {0} example".format(exe),
-            work_dir=test_dir,
-        )
-
-        self.run_test(exe, purpose="test: run {0} example".format(exe), work_dir=test_dir)
-
-    def test(self):
-        self.run_parallel_example_test()
+            parallel_simple = which(test_exe)
+            parallel_simple()