From 031af84e90655d654b461a5a47860f2058d2014f Mon Sep 17 00:00:00 2001
From: Tamara Dahlgren <35777542+tldahlgren@users.noreply.github.com>
Date: Mon, 29 May 2023 02:49:28 -0700
Subject: m4: convert to new stand-alone test process (#37723)

---
 var/spack/repos/builtin/packages/m4/package.py | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/var/spack/repos/builtin/packages/m4/package.py b/var/spack/repos/builtin/packages/m4/package.py
index dede047da1..7e665557dc 100644
--- a/var/spack/repos/builtin/packages/m4/package.py
+++ b/var/spack/repos/builtin/packages/m4/package.py
@@ -118,17 +118,18 @@ class M4(AutotoolsPackage, GNUMirrorPackage):
 
         return args
 
-    def test(self):
-        spec_vers = str(self.spec.version)
-        reason = "test: ensuring m4 version is {0}".format(spec_vers)
-        self.run_test(
-            "m4", "--version", spec_vers, installed=True, purpose=reason, skip_missing=False
-        )
-
-        reason = "test: ensuring m4 example succeeds"
+    def test_version(self):
+        """ensure m4 version matches installed spec"""
+        m4 = which(self.prefix.bin.m4)
+        out = m4("--version", output=str.split, error=str.split)
+        assert str(self.spec.version) in out
+
+    def test_hello(self):
+        """ensure m4 hello example runs"""
         test_data_dir = self.test_suite.current_test_data_dir
         hello_file = test_data_dir.join("hello.m4")
+        m4 = which(self.prefix.bin.m4)
+        out = m4(hello_file, output=str.split, error=str.split)
+
         expected = get_escaped_text_output(test_data_dir.join("hello.out"))
-        self.run_test(
-            "m4", hello_file, expected, installed=True, purpose=reason, skip_missing=False
-        )
+        check_outputs(expected, out)
-- 
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