tests/mfem: convert to new stand-alone test process (#38011)

* mfem: convert to new stand-alone test process
* Restore make target, use config_mk property

1 files changed, 11 insertions, 19 deletions

diff --git a/var/spack/repos/builtin/packages/mfem/package.py b/var/spack/repos/builtin/packages/mfem/package.py
index dbd917f0a9..b3b8daad4b 100644
--- a/var/spack/repos/builtin/packages/mfem/package.py
+++ b/var/spack/repos/builtin/packages/mfem/package.py
@@ -1116,30 +1116,22 @@ class Mfem(Package, CudaPackage, ROCmPackage):
         make("examples/clean", parallel=False)
         self.cache_extra_test_sources([self.examples_src_dir, self.examples_data_dir])
 
-    def test(self):
-        test_dir = join_path(self.test_suite.current_test_cache_dir, self.examples_src_dir)
-
+    def test_ex10(self):
+        """build and run ex10(p)"""
         # MFEM has many examples to serve as a suitable smoke check. ex10
         # was chosen arbitrarily among the examples that work both with
         # MPI and without it
+        test_dir = join_path(self.test_suite.current_test_cache_dir, self.examples_src_dir)
+
+        mesh = join_path("..", self.examples_data_dir, "beam-quad.mesh")
         test_exe = "ex10p" if ("+mpi" in self.spec) else "ex10"
-        self.run_test(
-            "make",
-            ["CONFIG_MK={0}/share/mfem/config.mk".format(self.prefix), test_exe, "parallel=False"],
-            purpose="test: building {0}".format(test_exe),
-            skip_missing=False,
-            work_dir=test_dir,
-        )
 
-        self.run_test(
-            "./{0}".format(test_exe),
-            ["--mesh", "../{0}/beam-quad.mesh".format(self.examples_data_dir)],
-            [],
-            installed=False,
-            purpose="test: running {0}".format(test_exe),
-            skip_missing=False,
-            work_dir=test_dir,
-        )
+        with working_dir(test_dir):
+            make = which("make")
+            make(f"CONFIG_MK={self.config_mk}", test_exe, "parallel=False")
+
+            ex10 = which(test_exe)
+            ex10("--mesh", mesh)
 
     # this patch is only needed for mfem 4.1, where a few
     # released files include byte order marks